Brake Booster Corrosion May Impair Braking – 2006-2012 Mercedes-Benz ML, GL, & R-Class

SEOCONTENT-START

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24V-298
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Mercedes-Benz USA, LLC APR 26, 2024 NHTSA Recall No. : 24V-298 Manufacturer Recall No. : 2024MMNNNN Manufacturer Information :
Manufacturer Name : Mercedes-Benz USA, LLC Address : 13470 International Parkway
Jacksonville FL 32218
Company phone : 1-877-496-3691
Population :
Number of potentially involved : 15,604 Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2009-2009 Mercedes-Benz GL320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 GL320BTC 168 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2007-2008 Mercedes-Benz GL320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 GL320CDI 187 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 24V-298 Page 2 Vehicle 3 : 2009-2012 Mercedes-Benz GL350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 GL350BTC 510 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2011-2012 Mercedes-Benz GL350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2011-2012 GL350CDI 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2007-2012 Mercedes-Benz GL450 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2012 GL450 3,826 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2008-2012 Mercedes-Benz GL550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2012 GL550 557 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 3 Vehicle 7 : 2009-2009 Mercedes-Benz ML320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML320BTC 233 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2007-2008 Mercedes-Benz ML320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 ML320CDI 548 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 9 : 2006-2011 Mercedes-Benz ML350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2011 ML350 6,032 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2009-2011 Mercedes-Benz ML350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2011 ML350BTC 256 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 4 Vehicle 11 : 2009-2009 Mercedes-Benz ML350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML350CDI 1 Vehicle. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 12 : 2010-2011 Mercedes-Benz ML450H Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : HYBRID ELECTRIC
Descriptive Information : Mercedes-Benz 2010-2011 ML350H 81 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 13 : 2006-2008 Mercedes-Benz ML500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2008 ML500 484 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 14 : 2008-2011 Mercedes-Benz ML550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2011 ML550 139 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 5 Vehicle 15 : 2007-2011 Mercedes-Benz Mercedes-AMG ML63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2011 Mercedes-AMG ML63 104 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 16 : 2009-2009 Mercedes-Benz R320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 R320BTC 14 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 17 : 2007-2008 Mercedes-Benz R320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 R320CDI 267 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 18 : 2006-2012 Mercedes-Benz R350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2012 R350 1,911 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 6 Vehicle 19 : 2009-2012 Mercedes-Benz R350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 R350BTC 42 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 20 : 2012-2012 Mercedes-Benz R350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2012 R350CDI 2 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 21 : 2006-2007 Mercedes-Benz R500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2007 R500 236 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 22 : 2007-2007 Mercedes-Benz Mercedes-AMG R63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007 Mercedes-AMG R63 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 7 Description of Defect :
Description of the Defect : Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2006-2012 ML, GL (164 platform) and R-Class (251 platform) vehicles, the function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : Description of Safety Risk*
After extended time in the field and in conjunction with significant water exposure, this corrosion might lead to a leakage of the brake booster. In this case, the brake force support might be reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle and/or to potentially increased stopping distance.
Additionally, in rare cases of very severe corrosion, it might be possible for a particularly strong or hard braking maneuver to cause mechanical damage in the brake booster, whereby the connection between brake pedal and brake system would fail. In such a very rare case, it would not be possible to decelerate the vehicle via the service brake.
Thus, the risk of a crash or injury would be increased.
The function of the foot parking brake is not affected by this issue.
Description of the Cause : Moisture may wick under a rubber sleeve that is installed around the brake booster housing for aesthetic reasons. This might result in corrosion in the joint area of the brake booster housing. Identification of Any Warning
that can Occur : Before the issue occurs, the driver might notice a change in the brake pedal feel and/or hissing/airflow noises when applying the brake pedal. Involved Components : Component Name 1 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310427 Component Name 2 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310527 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 8 Component Name 3 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310627 Supplier Identification : Component Manufacturer
Name : Continental Tire the Americas, LLC Address : 1830 MacMillan Park Dr.
Fort Mill North Carolina 29707
Country : United States Chronology :
Please see chronology supplement. Description of Remedy :
Description of Remedy Program : An authorized Mercedes-Benz dealer will remove the rubber sleeve and
inspect the brake booster housing on the affected vehicles. Vehicles that do not exhibit advanced corrosion may continue to be driven with no further action. Vehicles that exhibit advanced corrosion will require a brake booster replacement. The stop-drive notice will remain in effect for these vehicles until the brake booster is replaced. In the event a repair is necessary and cannot be carried out immediately, an authorized Mercedes-Benz dealer will help coordinate an individual solution for the customer, including alternate mobility. Pursuant to 49 C.F.R. § 577.11, MBUSA plans to provide notice about pre- notice reimbursement to owners since some of the involved vehicles could have been previously subject to the condition described. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : Brake booster without rubber sleeve installed. Brake Booster: A2514300000 Modification kit for brake pedal (only needed for a part of the affected vehicles): A2512900000
The issue might occur on all vehicles of the subject models produced up to August 20, 2012. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298
Page 9
The information contained in this report was submitted pursuant to 49 CFR §573
Recall Schedule :
Description of Recall Schedule : MBUSA will issue a stop-drive notice and dealers will be notified of the
voluntary recall campaign on May 3, 2024. MBUSA will issue a stop-drive notice and owners will be notified of the voluntary recall campaign on or before May 17, 2024. A copy of all communications will be provided when available.
Planned Dealer Notification Date : MAY 03, 2024 – NR Planned Owner Notification Date : MAY 17, 2024 – NR
* NR – Not Reported

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Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
IMPORTANT RECALL CAMPAIGN INFORMATION
STOP DRIVE NOTIFICATION!
Topic Page
Launch NCU 2
Frequently Asked Questions (FAQ) 3
Work Instructions 7
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-888-548-8514.
Sincerely,
Gregory Gunther
Senior Manager, Vehicle Compliance & Analysis
TO: Mercedes-Benz Dealer Principals, General Managers,
Sales Managers, Service Managers, Parts Managers
FROM: Gregory Gunther, Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
RE: Recall Campaign Launch Notification STOP DRIVE
Inspect and Replace Brake Booster
without Pedal Rework
MY06-12 GL-Class, ML-Class, R-Class
(164 and 251 platform)
DATE: May 10, 2024
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
Recall Campaign Launch Notification May 10, 2024
Campaign No. : NHTSA ID Campaign Desc. : Inspect and Replace Brake Booster
2024050001 24V298 24P4290017 Without Pedal Rework
This is to notify you of the Recall Campaign Launch to inspect and replace the brake booster on 11,993 Model Year (“MY”) 2006-2012 GL-Class,
ML-Class, and R-Class (164 and 251 platform) vehicles. The recall campaign will be visible on the www.nhtsa.gov website and may generate
questions from customers. Affected VINs will be flagged in VMI as “OPEN” on May 10, 2024 under a new NHTSA ID. These VINs were previously
flagged under 22V315.
Background
Issue
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain
MY 2006-2012 ML-Class, GL-Class, and R-Class (164 and 251 platform) vehicles, the function of
the brake booster might be affected due to advanced corrosion in the joint area of its housing. After
extended time in the field and in conjunction with prolonged water exposure, this corrosion might
lead to a vacuum leak at the brake booster. If this were to occur, the brake force support might be
reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle, and/or
increased stopping distances. Additionally, in rare cases of very severe corrosion, it might be
possible for a particularly strong or hard brake application to cause mechanical damage in the brake
booster, whereby the connection between brake pedal and brake system would fail. In such a very
rare case, it would not be possible to decelerate the vehicle via the brake pedal. The risk of a crash
or injury would be increased. The function of the parking brake is not affected by this issue. Before
the issue occurs, the driver might notice a change in the brake pedal feel and/or hissing/airflow
noises when applying the brake pedal.
What We’re Doing
MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will remove the rubber
sleeve from the brake booster housing, inspect the brake booster on the affected vehicles and,
depending on the result of this inspection, replace as necessary.
Parts The remedy is available and can be performed.
Vehicles Affected
Vehicle Model Year(s) 2006-2012
Vehicle Model GL-Class, ML-Class, R-Class
Vehicle Populations
Total Recall Population 11,993
Total Vehicles in Dealer Inventory 0
Vehicles are flagged as “OPEN” and Work Instructions are available in Netstar VMI and XENTRY Portal. Customers are advised not to
drive their vehicle until an inspection is performed. Based on the results, vehicles may continue to be driven if the inspection is passed
or must have the brake booster replaced if not passed.
Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent MY 06-12 GL-Class, ML-Class, and R-Class
vehicles covered by this notification until the vehicle has been inspected, and if applicable, repaired.
Next Steps/Notes
Customer Notification Timeline Owners of vehicles identified under the subject campaign number did not previously receive an
owner notification letter. Customer letters will be mailed on May 24, 2024.
AOMS/SOMS AOMs – This recall may generate questions from your dealers. Please forward this notice to
your dealers ASAP.
Rental Fleet Partners Affected vehicles in your fleet should not be driven until the inspection has been performed and
passed. Please contact your respective MBUSA fleet representative for further information and
next steps. For repairs, please contact your preferred Mercedes-Benz dealer.
While we regret any inconvenience this may cause, MBUSA is determined to maintain a high level of vehicle quality and customer satisfaction.
Please refer all customer inquiries to the Customer Assistance Center at 1-800-FOR-MERCEDES.
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
FAQs
1. What’s the difference between Campaign 2024050001 and 2024050002.
a. The inspection is the same, however, different damage codes apply based on the vehicle
population. One population requires a pedal rework, the other does not.
2. Can I continue to drive the car?
a. Your safety is our highest priority. MBUSA advises customers to stop driving the vehicle until the
inspection is performed. Customers were notified by first class mail to schedule an appointment
to have the inspection performed by an authorized dealer.
3. Why are other models not included?
a. Only ML- (MY2006 – 2011), GL- (MY2007 – 2012), and R- (MY2006 – 2012) Class vehicles are
fitted with the affected brake booster utilizing a rubber sleeve. Other models are not fitted with
this rubber sleeve. Affected vehicles have been identified within this recall.
4. What types of repairs or replacements part(s) are needed?
a. Affected vehicles will be inspected by removing the rubber sleeve around the brake booster
housing. See Work Instructions for detailed procedures.
1. Rubber Sleeve Inspection Passed: The vehicle can be driven with no further action or
customer follow-up required.
2. Rubber Sleeve Inspection Failed: Dealer to order and replace brake booster, and
pedal kit if applicable.
5. How long will the vehicle need to be in the workshop?
a. For your convenience, an authorized Mercedes-Benz dealer will offer mobile inspection at your
location of choice. Should you request the vehicle be towed to a workshop, the time for the
recall will vary and is dependent on towing availability and dealership schedules. The inspection
itself will require 1 hour to complete. Based on the results of the inspection an additional 2
hours may be needed to replace the brake booster and pedal kit, if applicable. Your authorized
Mercedes-Benz dealer can provide you with a better estimate of the overall time for this
inspection.
6. A vehicle came in with no serial code on the brake booster unit and/or the brake booster is not
the same color as in the work instruction pictures. What inspection procedure do I follow?
a. Please open a PTSS case for verification of aftermarket booster. If the brake booster is verified
as aftermarket, use ONE of the warranty claim codes.
i. Campaign Damage Code 4290005: 02-0136
ii. Campaign Damage Code 4290006: 02-0137
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
Parts
7. Are parts available to replace brake boosters? How will I receive the parts necessary to
complete the campaign?
a. Yes. Dealers may order brake boosters, as necessary, via the parts ordering system.
8. After vehicle inspection, will another campaign open to replace the brake booster?
a. No. The campaign is now “Inspect and Replace”. Do NOT close this campaign until either the
sleeve inspection passes OR the sleeve inspection fails and the brake booster is replaced.
MOBILITY
9. Will the dealer provide a loaner vehicle?
a. The dealer may offer to provide a loaner based on loaner vehicle availability. If available, the
loaner will be provided free of charge. If no loaner vehicles are available, other solutions will be
offered such as taxi/rideshare, public transportation cost reimbursement, and rental
reimbursement. See the “Reimbursements/Owner Pay” section below for additional information.
10. Are rental vehicles still allowed?
a. Long term mobility damage codes are no longer necessary since parts are available. Mobility
solutions will revert to normal dealership practices.
11. How does the dealer handle rental reimbursements?
a. The dealer should reimburse the customer at the dealership. The dealership should then claim as
a sublet via the warranty process.
12. If I am advised not to drive my vehicle will towing be offered?
a. Customers were notified by first class mail that the inspection can be performed at an
authorized dealer. A tow can be completed by the local dealer or by calling 1-888-548-8514. Full
details are available in the owner notification letter. In some locations, a mobile inspection can
be performed at a location of the customer’s convenience. All towing will be provided free of
charge to complete this recall.
13. Is mobile repair offered for this recall?
a. Yes, for your convenience, an authorized Mercedes-Benz dealer will offer mobile inspection at a
location of your choice.
14. I read a media article that states I should stop driving my vehicle if I own one of the affected
vehicles, what should I do?
a. A VIN-based recall lookup tool on our MBUSA.com website offers a search feature that will
indicate whether a vehicle has been subject to a safety recall. See
https://www.mbusa.com/en/recall for more details. If your vehicle status is listed as “Open,”
the vehicle MUST NOT be driven until the inspection process is performed. Further instructions
will be provided based on the results of that inspection.
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
REIMBURSEMENTS/OWNER PAY
15. I may have paid for repairs related to this recall. Will I receive reimbursement?
a. Current and previous owners may be eligible to receive reimbursement if they have had a brake
booster replacement due to the conditions specified in this recall. Requests for reimbursement
may include parts, labor, fees and taxes. Reimbursement may be limited to the amount the
repair would have cost if completed by an authorized Mercedes-Benz dealer. Details were
provided in the recall owner notification letter, which can be viewed on
https://www.mbusa.com/en/recall. Additional information can be provided by your AOM if
necessary.
16. I inspected the vehicle and found other brake components to be in need of repair.
a. This recall relates to potential advanced corrosion on the brake booster housing. If other brake
system component(s) are in need of repair/replacement such that they would impair or hinder
performing the inspection for the recall condition, the parts/system must be rectified prior so
the initial inspection may be completed. These parts and labor are not covered under this recall.
17. I received a letter but I no longer own the vehicle. How can I update my ownership information?
a. Customers should be directed to the MBUSA recall website at
https://www.mbusa.com/en/recall, enter their VIN, and update their contact information.
18. The customer wishes to keep driving the vehicle and refuses the repair. How do I handle this
situation?
a. Customer safety is our top priority at Mercedes-Benz. If the customer insists on driving the
vehicle despite the warnings associated with a “stop drive” recall, the following language MUST
be added to the Repair Order and initialed by the customer:
______ (Initial Here) ASSUMPTION OF RISK FOR REMOVAL OF VEHICLE. I understand that my vehicle is
subject to a “Stop Drive” recall and that continuing to drive my vehicle involves inherent risks and
dangers of accidents, property loss or damage, and serious personal injury to me and others, as well
as potential financial losses. I have carefully considered the extent of the risks involved, and I
voluntarily and freely choose to assume these risks.
19. The customer wishes to keep driving the vehicle and is refusing to initial the “Assumption of
Risk” on the Repair Order. How do I handle this situation?
a. Follow the same protocol used at your dealership when a customer refuses services offered.
Also, make a notation on the RO that “customer refuses to initial the Assumption of Risk.” A
customer signature must be recorded on the RO.
6
News Channel Update | Vehicle Compliance & Analysis
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
20. Now that the vehicle has been repaired, do I need to close out any pending costs attributable to
storage, maintenance, etc?
a. There should not be any Category 3 customers utilizing rental vehicles, storage, etc… as
sufficient parts inventory for Category 3 vehicles has been available since October 2022.
b. The following damage codes will continue to be offered to assist in processing customer
vehicles efficiently.
i. Damage code 99803 01 – Mobile inspection incentive
1. $150 per vehicle
2. Claimed separately and on top of the recall inspection
ii. Damage code 99039 01 – Towing
1. Up to $125 per tow if arranged by customer or dealer outside of normal
process
2. Invoice must be attached to claim
3. Please use normal CAC tow process whenever possible to alleviate
reimbursement
2
Campaign No. 2024050001, May 2024
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT: Model GL-Class, ML-Class, and R-Class (X164, W164 and 251 platform)
Model Year 2006 – 2012
Inspect Brake Booster – without Pedal Rework
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain
MY 2006-2012 ML-Class, GL-Class, and R-Class (164 and 251 platform) vehicles, the function of
the brake booster might be affected due to advanced corrosion in the joint area of its housing. After
extended time in the field and in conjunction with prolonged water exposure, this corrosion might
lead to a vacuum leak at the brake booster. If this were to occur, the brake force support might be
reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle, and/or
increased stopping distances. Additionally, in rare cases of very severe corrosion, it might be
possible for a particularly strong or hard brake application to cause mechanical damage in the
brake booster, whereby the connection between brake pedal and brake system would fail. In such
a very rare case, it would not be possible to decelerate the vehicle via the brake pedal. The risk of
a crash or injury would be increased. The function of the parking brake is not affected by this issue.
Before the issue occurs, the driver might notice a change in the brake pedal feel and/or
hissing/airflow noises when applying the brake pedal. An authorized Mercedes-Benz dealer will
remove the rubber sleeve from the brake booster housing, inspect the brake booster on the affected
vehicles and, depending on the result of this inspection, replace as necessary.
Prior to performing this Campaign:
 VMI must be checked before performing campaigns to verify that the campaign is required on
a specific vehicle. Always check for any other open campaigns and perform accordingly.
 Please review the entire Campaign bulletin and follow the repair procedure exactly as
described.
Approximately 11,993 vehicles are affected.
Order No. P-RC-2024050001
2
P-RC-2024050001
Inspect Brake Booster – without Pedal Rework
Existing problems that would hinder the inspection procedure or any subsequent repairs must first be rectified and are
the responsibility of the customer. Any associated costs are not claimable and should not be included with the campaign
claim.
Before starting work, the vehicle must have no fault message present in the instrument cluster for the brake system.
If a fault message is present before starting work, it must be rectified and is the responsibility of the customer. Any
associated costs are not claimable and should not be included with the campaign claim.
The single rubber band no longer needs to be packed and returned. The rubber bands are no longer needed and can
be disposed of.
If a vehicle comes in with no serial code on the brake booster unit and/or the brake booster is not the same color as
in the work instruction pictures, open a TIPS case for verification of aftermarket booster and further processing.
Check/Test Procedure A – visual inspection only
1. Open the hood and check the water drains (Figure 1, 1) for correct installation and ability to drain.
Only for model 251
Clean and correctly install water drains if necessary.
Figure 1
1
3
P-RC-2024050001
2. Remove the rubber sleeve wrapped around the brake booster (Figure 2, A) with a suitable tool (hook and side cutting
pliers).
If the rubber sleeve on the brake booster is missing or not present, then continue with Check/Test Procedure A1.
The rubber sleeve should be separated above the barcode label on the brake booster as seen in (Figure 2, A).
Figure 2
3. Take a photo of the rubber sleeve with the VIN label of the B-pillar (Figures 3 and 4, A) and store to a local
HDD/computer storage location with the vehicle service file and attach it to the warranty claim in EVA.
These pictures serve as documentation of the current condition of the brake booster.
Figure 3 Figure 4
4
P-RC-2024050001
4. Check corrosion of the brake booster using the removed rubber sleeve.
Use (Figures 5, 6 and 7) to assess corrosion.
Brake booster (OK):
Multiple point-shaped corrosion marks (Figure 5) are permissible.
A maximum of one point-shaped corrosion mark with a diameter greater than 15 mm (Figures 6 and 7) is permitted.
Figure 5 (OK)
Figure 6 (OK) Figure 7 (OK)
Brake booster (Not OK):
Widespread corrosion marks spanning the rubber sleeve are not permissible.
More than one corrosion mark with a diameter greater than 15 mm is not permissible.
a. Corrosion measurements Exceeds thresholds – Not OK: Carry out Work Procedure
b. Corrosion measurements Does not exceed threshold – OK (Figures 5, 6 or 7): End measure.
If the measure is ended, do not re-install a rubber sleeve. Apply marking with white touch-up paint pen
(Figure 10, 1) to the brake booster checked.
Under no circumstances should you treat the brake booster with anti-corrosion agent.
The findings from the Check/Test Procedure must be documented on the Repair Order and included in the
dealer text in the warranty claim in EVA.
5
P-RC-2024050001
Check/Test Procedure A1 – visual inspection only if rubber sleeve is not present
Only if the rubber sleeve of the brake booster is missing.
1. Take a photo of the barcode label (Figure 8, B) on the brake booster and store to a local HDD/computer storage
location with the vehicle service file and attach to the warranty claim in EVA.
Figure 8
6
P-RC-2024050001
2. Check sequence of numbers on the barcode label (Figure 9, C).
a. If the numeric sequence between the 13th and 17th digits (Figure 9, C) are less than “15126”: Carry out
Work Procedure below.
b. If the numeric sequence between the 13th and 17th digits (Figure 9, C) are greater than or equal to “15126”:
End measure.
Figure 9
3. Apply marking with white touch-up paint pen (Figure 10, 1) to the inspected brake booster.
Under no circumstances should you treat the brake booster with anti-corrosion agent/paint.
Figure 10
7
P-RC-2024050001
Work Procedure
To prepare for the Work Procedure, the Mercedes-Benz PartScan app must be installed on an
Apple® iPhone® or Android® smartphone.
A mobile Internet connection is required for installing and transmitting the data.
Download the app from the Apple® Store for iPhone® or Google® Play for Android®
(download is similar to other apps).
After downloading, a one-time login authentication must be performed via an encrypted QR
code (follow instructions on screen).
The required QR code (Figure 11) can be scanned here from the work instructions.
Ensure that only authorized workshop personnel have access to the QR code!
The use of the Mercedes-Benz PartScan app is recommended to simplify redocumentation
and avoid input errors.
If the PartScan app cannot be used, an XSF ticket for the documentation must be
created and noted on the workshop order.
In the case of a redocumentation with the Mercedes-Benz PartScan app, no additional documentation must be carried
out in VeDoc.
The new brake booster contains a small parts kit (Figure 12).
Figure 12
1. Replace brake booster.
Model 164: For basic data, see AR43.10-P-0350GZ.
Model 251: For basic data, see AR43.10-P-0350RT.
The BAS diaphragm travel sensor must be reused.
2. Once the old brake booster has been removed from the vehicle,
transfer the BAS diaphragm travel sensor to the new brake booster.
Model 164: For basic data, see AR42.31-P-6002GZ.
Model 251: For basic data, see AR42.31-P-6002RT.
3. Check for correct function of brake lights.
4. Read out serial number (Figure 13) using the Mercedes-Benz PartScan app.
The serial number is automatically entered in VeDoc.
Verify the VIN reads from the vehicle correctly.
__________________________________________________________________________________________________
Figure 13
Figure 11 – QR Code
8
P-RC-2024050001
Primary Parts Information
Qty. Part Name Part Number
1 Brake booster A 251 430 00 00
As required Brake fluid *
* The replacement parts must be determined according to the equipment variant for the vehicle identification number via
the parts process in the Xentry Portal.
Small parts such as screws/bolts, lock nuts, sealing rings, cable ties, fluids, sealant, etc. are not listed in the parts list.
The required small parts are taken into account in the budgeting.
Warranty Information
Note: The following allowable labor operation should be used when submitting a warranty claim for this repair:
Damage
Code
Operation
Number
Description
Labor Time
(hrs.)
42 900 17
12-2142
Check/Test Procedure A
Check brake unit
Includes: Remove rubber sleeve from brake unit and document test result
This operation number can be used even if no rubber sleeve is present on the
brake unit
0.2
12-2143
Check/Test Procedure A1
Check barcode on brake unit
Only if no rubber sleeve is present on the brake unit
0.1
12-2144
Replace brake unit (after check)
Model 164
Includes: Modify travel sensor for brake unit and bleed brake system
2.0
12-2144
Replace brake unit (after check)
Model 251
Includes: Modify travel sensor for brake unit and bleed brake system
2.4
Note: Always check Xentry Operation Time (XOT) for the current OP-Code times. Labor times are subject to change
and updates may not be reflected in this document.

**************************************************************************************************************

Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
IMPORTANT RECALL CAMPAIGN INFORMATION
STOP DRIVE NOTIFICATION!
Topic Page
Launch NCU 2
Frequently Asked Questions (FAQ) 3
Work Instructions 7
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-888-548-8514.
Sincerely,
Gregory Gunther
Senior Manager, Vehicle Compliance & Analysis
TO: Mercedes-Benz Dealer Principals, General Managers,
Sales Managers, Service Managers, Parts Managers
FROM: Gregory Gunther, Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
RE: Recall Campaign Launch Notification STOP DRIVE
Inspect and Replace Brake Booster
with Pedal Rework
MY06-12 GL-Class, ML-Class, R-Class
(164 and 251 platform)
DATE: May 10, 2024
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
Recall Campaign Launch Notification May 10, 2024
Campaign No. : NHTSA ID Campaign Desc. : Inspect and Replace Brake Booster
2024050002 24V298 24P4290016 With Pedal Rework
This is to notify you of the Recall Campaign Launch to inspect and replace the brake booster on 3,443 Model Year (“MY”) 2006-2012 GL-Class,
ML-Class, and R-Class (164 and 251 platform) vehicles. The recall campaign will be visible on the www.nhtsa.gov website and may generate
questions from customers. Affected VINs will be flagged in VMI as “OPEN” on May 10, 2024 under a new NHTSA ID. These VINs were
previously flagged under 22V315.
Background
Issue
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain
MY 2006-2012 ML-Class, GL-Class, and R-Class (164 and 251 platform) vehicles, the function of
the brake booster might be affected due to advanced corrosion in the joint area of its housing.
After extended time in the field and in conjunction with prolonged water exposure, this corrosion
might lead to a vacuum leak at the brake booster. If this were to occur, the brake force support
might be reduced, leading to an increase in the brake pedal forces required to decelerate the
vehicle, and/or increased stopping distances. Additionally, in rare cases of very severe corrosion,
it might be possible for a particularly strong or hard brake application to cause mechanical damage
in the brake booster, whereby the connection between brake pedal and brake system would fail.
In such a very rare case, it would not be possible to decelerate the vehicle via the brake pedal. The
risk of a crash or injury would be increased. The function of the parking brake is not affected by
this issue. Before the issue occurs, the driver might notice a change in the brake pedal feel and/or
hissing/airflow noises when applying the brake pedal.
What We’re Doing
MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will remove the
rubber sleeve from the brake booster housing, inspect the brake booster on the affected vehicles
and, depending on the result of this inspection, replace as necessary.
Parts The remedy is available and can be performed.
Vehicles Affected
Vehicle Model Year(s) 2006-2012
Vehicle Model GL-Class, ML-Class, R-Class
Vehicle Populations
Total Recall Population 3,443
Total Vehicles in Dealer Inventory 0
Vehicles are flagged as “OPEN” and Work Instructions are available in Netstar VMI and XENTRY Portal. Customers are advised not to
drive their vehicle until an inspection is performed. Based on the results, vehicles may continue to be driven if the inspection is
passed or must have the brake booster replaced if not passed.
Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent MY 06-12 GL-Class, ML-Class, and RClass
vehicles covered by this notification until the vehicle has been inspected, and if applicable, repaired.
Next Steps/Notes
Customer Notification Timeline Owners of vehicles identified under the subject campaign number did not previously receive
an owner notification letter. Customer letters will be mailed on May 24, 2024.
AOMS/SOMS AOMs – This recall may generate questions from your dealers. Please forward this notice to
your dealers ASAP.
Rental Fleet Partners Affected vehicles in your fleet should not be driven until the inspection has been performed
and passed. Please contact your respective MBUSA fleet representative for further
information and next steps. For repairs, please contact your preferred Mercedes-Benz dealer.
While we regret any inconvenience this may cause, MBUSA is determined to maintain a high level of vehicle quality and customer satisfaction.
Please refer all customer inquiries to the Customer Assistance Center at 1-800-FOR-MERCEDES.
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
FAQs
1. What’s the difference between Campaign 2024050001 and 2024050002.
a. The inspection is the same, however, different damage codes apply based on the vehicle
population. One population requires a pedal rework, the other does not.
2. Can I continue to drive the car?
a. Your safety is our highest priority. MBUSA advises customers to stop driving the vehicle until the
inspection is performed. Customers were notified by first class mail to schedule an appointment
to have the inspection performed by an authorized dealer.
3. Why are other models not included?
a. Only ML- (MY2006 – 2011), GL- (MY2007 – 2012), and R- (MY2006 – 2012) Class vehicles are
fitted with the affected brake booster utilizing a rubber sleeve. Other models are not fitted with
this rubber sleeve. Affected vehicles have been identified within this recall.
4. What types of repairs or replacements part(s) are needed?
a. Affected vehicles will be inspected by removing the rubber sleeve around the brake booster
housing. See Work Instructions for detailed procedures.
1. Rubber Sleeve Inspection Passed: The vehicle can be driven with no further action or
customer follow-up required.
2. Rubber Sleeve Inspection Failed: Dealer to order and replace brake booster, and
pedal kit if applicable.
5. How long will the vehicle need to be in the workshop?
a. For your convenience, an authorized Mercedes-Benz dealer will offer mobile inspection at your
location of choice. Should you request the vehicle be towed to a workshop, the time for the
recall will vary and is dependent on towing availability and dealership schedules. The inspection
itself will require 1 hour to complete. Based on the results of the inspection an additional 2
hours may be needed to replace the brake booster and pedal kit, if applicable. Your authorized
Mercedes-Benz dealer can provide you with a better estimate of the overall time for this
inspection.
6. A vehicle came in with no serial code on the brake booster unit and/or the brake booster is not
the same color as in the work instruction pictures. What inspection procedure do I follow?
a. Please open a PTSS case for verification of aftermarket booster. If the brake booster is verified
as aftermarket, use ONE of the warranty claim codes.
i. Campaign Damage Code 4290016: 02-0136
ii. Campaign Damage Code 4290017: 02-0137
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
Parts
7. Are parts available to replace brake boosters? How will I receive the parts necessary to
complete the campaign?
a. Yes. Dealers may order brake boosters, as necessary, via the parts ordering system.
8. After vehicle inspection, will another campaign open to replace the brake booster?
a. No. The campaign is now “Inspect and Replace”. Do NOT close this campaign until either the
sleeve inspection passes OR the sleeve inspection fails and the brake booster is replaced.
MOBILITY
9. Will the dealer provide a loaner vehicle?
a. The dealer may offer to provide a loaner based on loaner vehicle availability. If available, the
loaner will be provided free of charge. If no loaner vehicles are available, other solutions will be
offered such as taxi/rideshare, public transportation cost reimbursement, and rental
reimbursement. See the “Reimbursements/Owner Pay” section below for additional information.
10. Are rental vehicles still allowed?
a. Long term mobility damage codes are no longer necessary since parts are available. Mobility
solutions will revert to normal dealership practices.
11. How does the dealer handle rental reimbursements?
a. The dealer should reimburse the customer at the dealership. The dealership should then claim as
a sublet via the warranty process.
12. If I am advised not to drive my vehicle will towing be offered?
a. Customers were notified by first class mail that the inspection can be performed at an
authorized dealer. A tow can be completed by the local dealer or by calling 1-888-548-8514. Full
details are available in the owner notification letter. In some locations, a mobile inspection can
be performed at a location of the customer’s convenience. All towing will be provided free of
charge to complete this recall.
13. Is mobile repair offered for this recall?
a. Yes, for your convenience, an authorized Mercedes-Benz dealer will offer mobile inspection at a
location of your choice.
14. I read a media article that states I should stop driving my vehicle if I own one of the affected
vehicles, what should I do?
a. A VIN-based recall lookup tool on our MBUSA.com website offers a search feature that will
indicate whether a vehicle has been subject to a safety recall. See
https://www.mbusa.com/en/recall for more details. If your vehicle status is listed as “Open,”
the vehicle MUST NOT be driven until the inspection process is performed. Further instructions
will be provided based on the results of that inspection.
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Com pany
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update | Vehicle Compliance & Analysis
REIMBURSEMENTS/OWNER PAY
15. I may have paid for repairs related to this recall. Will I receive reimbursement?
a. Current and previous owners may be eligible to receive reimbursement if they have had a brake
booster replacement due to the conditions specified in this recall. Requests for reimbursement
may include parts, labor, fees and taxes. Reimbursement may be limited to the amount the
repair would have cost if completed by an authorized Mercedes-Benz dealer. Details were
provided in the recall owner notification letter, which can be viewed on
https://www.mbusa.com/en/recall. Additional information can be provided by your AOM if
necessary.
16. I inspected the vehicle and found other brake components to be in need of repair.
a. This recall relates to potential advanced corrosion on the brake booster housing. If other brake
system component(s) are in need of repair/replacement such that they would impair or hinder
performing the inspection for the recall condition, the parts/system must be rectified prior so
the initial inspection may be completed. These parts and labor are not covered under this recall.
17. I received a letter but I no longer own the vehicle. How can I update my ownership information?
a. Customers should be directed to the MBUSA recall website at
https://www.mbusa.com/en/recall, enter their VIN, and update their contact information.
18. The customer wishes to keep driving the vehicle and refuses the repair. How do I handle this
situation?
a. Customer safety is our top priority at Mercedes-Benz. If the customer insists on driving the
vehicle despite the warnings associated with a “stop drive” recall, the following language MUST
be added to the Repair Order and initialed by the customer:
______ (Initial Here) ASSUMPTION OF RISK FOR REMOVAL OF VEHICLE. I understand that my vehicle is
subject to a “Stop Drive” recall and that continuing to drive my vehicle involves inherent risks and
dangers of accidents, property loss or damage, and serious personal injury to me and others, as well
as potential financial losses. I have carefully considered the extent of the risks involved, and I
voluntarily and freely choose to assume these risks.
19. The customer wishes to keep driving the vehicle and is refusing to initial the “Assumption of
Risk” on the Repair Order. How do I handle this situation?
a. Follow the same protocol used at your dealership when a customer refuses services offered.
Also, make a notation on the RO that “customer refuses to initial the Assumption of Risk.” A
customer signature must be recorded on the RO.
6
News Channel Update | Vehicle Compliance & Analysis
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company
One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
20. Now that the vehicle has been repaired, do I need to close out any pending costs attributable to
storage, maintenance, etc?
a. There should not be any Category 3 customers utilizing rental vehicles, storage, etc… as
sufficient parts inventory for Category 3 vehicles has been available since October 2022.
b. The following damage codes will continue to be offered to assist in processing customer
vehicles efficiently.
i. Damage code 99803 01 – Mobile inspection incentive
1. $150 per vehicle
2. Claimed separately and on top of the recall inspection
ii. Damage code 99039 01 – Towing
1. Up to $125 per tow if arranged by customer or dealer outside of normal
process
2. Invoice must be attached to claim
3. Please use normal CAC tow process whenever possible to alleviate
reimbursement
2
Campaign No. 2024050002, May 2024
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT: Model GL-Class, ML-Class, and R-Class (X164, W164 and 251 platform)
Model Year 2006 – 2012
Inspect Brake Booster – with Pedal Rework
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain
MY 2006-2012 ML-Class, GL-Class, and R-Class (164 and 251 platform) vehicles, the function of
the brake booster might be affected due to advanced corrosion in the joint area of its housing. After
extended time in the field and in conjunction with prolonged water exposure, this corrosion might
lead to a vacuum leak at the brake booster. If this were to occur, the brake force support might be
reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle, and/or
increased stopping distances. Additionally, in rare cases of very severe corrosion, it might be
possible for a particularly strong or hard brake application to cause mechanical damage in the
brake booster, whereby the connection between brake pedal and brake system would fail. In such
a very rare case, it would not be possible to decelerate the vehicle via the brake pedal. The risk of
a crash or injury would be increased. The function of the parking brake is not affected by this issue.
Before the issue occurs, the driver might notice a change in the brake pedal feel and/or
hissing/airflow noises when applying the brake pedal. An authorized Mercedes-Benz dealer will
remove the rubber sleeve from the brake booster housing, inspect the brake booster on the affected
vehicles and, depending on the result of this inspection, replace as necessary.
Prior to performing this Campaign:
 VMI must be checked before performing campaigns to verify that the campaign is required on
a specific vehicle. Always check for any other open campaigns and perform accordingly.
 Please review the entire Campaign bulletin and follow the repair procedure exactly as
described.
Approximately 3,443 vehicles are affected.
Order No. P-RC-2024050002
2
P-RC-2024050002
Inspect Brake Booster – with Pedal Rework
Existing problems that would hinder the inspection procedure or any subsequent repairs must first be rectified and are
the responsibility of the customer. Any associated costs are not claimable and should not be included with the campaign
claim.
Before starting work, the vehicle must have no fault message present in the instrument cluster for the brake system.
If a fault message is present before starting work, it must be rectified and is the responsibility of the customer. Any
associated costs are not claimable and should not be included with the campaign claim.
The individual rubber band no longer needs to be packed and returned. The rubber bands are no longer needed and
can be disposed of.
If a vehicle comes in with no serial code on the brake booster unit and/or the brake booster is not the same color as
in the work instruction pictures, open a TIPS case for verification of aftermarket booster and further processing.
Check/Test Procedure A – visual inspection only
1. Open the hood and check the water drains (Figure 1, 1) for correct installation and ability to drain.
Only for model 251
Clean and correctly install water drains if necessary.
Figure 1
1
3
P-RC-2024050002
2. Remove the rubber sleeve wrapped around the brake booster (Figure 2, A) with a suitable tool (hook and side cutting
pliers).
If the rubber sleeve on the brake booster is missing or not present, then continue with Check/Test Procedure A1.
The rubber sleeve should be separated above the barcode label on the brake booster as seen in (Figure 2, A).
Figure 2
3. Take a photo of the rubber sleeve with the VIN label of the B-pillar (Figures 3 and 4, A) and store to a local
HDD/computer storage location with the vehicle service file and attach it to the warranty claim in EVA.
These pictures serve as documentation of the current condition of the brake booster.
Figure 3 Figure 4
4
P-RC-2024050002
4. Check corrosion of the brake booster using the removed rubber sleeve.
Use (Figures 5, 6 and 7) to assess corrosion.
Brake booster (OK):
Multiple point-shaped corrosion marks (Figure 5) are permissible.
A maximum of one point-shaped corrosion mark with a diameter greater than 15 mm (Figures 6 and 7) is permitted.
Figure 5 (OK)
Figure 6 (OK) Figure 7 (OK)
Brake booster (Not OK):
Widespread corrosion marks spanning the rubber sleeve are not permissible.
More than one corrosion mark with a diameter greater than 15 mm is not permissible.
a. Corrosion measurements Exceeds thresholds – Not OK: Carry out Work Procedure
b. Corrosion measurements Does not exceed threshold – OK (Figures 5, 6 or 7): End measure.
If the measure is ended, do not re-install a rubber sleeve. Apply marking with white touch-up paint pen
(Figure 10, 1) to the brake booster checked.
Under no circumstances should you treat the brake booster with anti-corrosion agent.
The findings from the Check/Test Procedure must be documented on the Repair Order and included in the
dealer text in the warranty claim in EVA.
5
P-RC-2024050002
Check/Test Procedure A1 – visual inspection only if no rubber sleeve is present
Only if the rubber sleeve of the brake booster is missing.
1. Take a photo of the barcode label (Figure 8, B) on the brake booster and store to a local HDD/computer storage
location with the vehicle service file and attach to the warranty claim in EVA.
Figure 8
6
P-RC-2024050002
2. Check sequence of numbers on the barcode label (Figure 9, C).
a. If the numeric sequence between the 13th and 17th digits (Figure 9, C) are less than “15126”: Carry out
Work Procedure below.
b. If the numeric sequence between the 13th and 17th digits (Figure 9, C) are greater than or equal to “15126”:
End measure.
Figure 9
3. Apply marking with white touch-up paint pen (Figure 10, 1) to the inspected brake booster.
Under no circumstances should you treat the brake booster with anti-corrosion agent/paint.
Figure 10
7
P-RC-2024050002
Work Procedure
To prepare for the Work Procedure, the Mercedes-Benz PartScan app must be installed on an
Apple® iPhone® or Android® smartphone.
A mobile Internet connection is required for installing and transmitting the data.
Download the app from the Apple® Store for iPhone® or Google® Play for Android®
(download is similar to other apps).
After downloading, a one-time login authentication must be performed via an encrypted QR
code (follow instructions on screen).
The required QR code (Figure 11) can be scanned here from the work instructions.
Ensure that only authorized workshop personnel have access to the QR code!
The use of the Mercedes-Benz PartScan app is recommended to simplify redocumentation
and avoid input errors.
If the PartScan app cannot be used, an XSF ticket for the documentation must be
created and noted on the workshop order.
In the case of a redocumentation with the Mercedes-Benz PartScan app, no additional documentation must be carried
out in VeDoc.
The new brake booster contains a small parts kit (Figure 12).
Figure 12
1. Replace brake booster.
Model 164: For basic data, see AR43.10-P-0350GZ.
Model 251: For basic data, see AR43.10-P-0350RT.
The BAS diaphragm travel sensor must be reused.
2. Once the old brake booster has been removed from the vehicle,
transfer the BAS diaphragm travel sensor to the new brake booster.
Model 164: For basic data, see AR42.31-P-6002GZ.
Model 251: For basic data, see AR42.31-P-6002RT.
3. Check for correct function of brake lights.
4. Install pedal conversion small parts kit A 251 290 00 00.
The pedal conversion small parts kit consists of the separate parts bushing, fit bolt and retainer.
5. Read out serial number (Figure 13) using the Mercedes-Benz PartScan app.
The serial number is automatically entered in VeDoc.
Verify the VIN reads from the vehicle correctly.
__________________________________________________________________________________________________
Figure 13
Figure 11 – QR Code
8
P-RC-2024050002
Primary Parts Information
Qty. Part Name Part Number
1 Brake booster A 251 430 00 00
1 Pedal conversion kit A 251 290 00 00
As required Brake fluid *
* The replacement parts must be determined according to the equipment variant for the vehicle identification number via
the parts process in the Xentry Portal.
Small parts such as screws/bolts, lock nuts, sealing rings, cable ties, fluids, sealant, etc. are not listed in the parts list.
The required small parts are taken into account in the budgeting.
When replacing the brake booster, the pedal conversion small parts kit A 251 290 00 00 must always be ordered.
Warranty Information
Note: The following allowable labor operation should be used when submitting a warranty claim for this repair:
Damage
Code
Operation
Number
Description
Labor Time
(hrs.)
42 900 16
12-2139
Check/Test Procedure A
Check brake unit
Includes: Remove rubber sleeve from brake unit and document test result
Even if no rubber sleeve is present on the brake unit, this operation item may
be invoiced
0.2
12-2140
Check/Test Procedure A1
Check barcode on brake unit
Only if no rubber sleeve is present on brake unit
0.1
12-2141
Replace brake unit (after check)
Model 164
Includes: Modify travel sensor for brake unit, as well as bushing, fit bolt and
retainer and bleed brake system
2.0
12-2141
Replace brake unit (after check)
Model 251
Includes: Modify travel sensor for brake unit, as well as bushing, fit bolt and
retainer and bleed brake system
2.4
Note: Always check Xentry Operation Time (XOT) for the current OP-Code times. Labor times are subject to change
and updates may not be reflected in this document.

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24V-298
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Mercedes-Benz USA, LLC MAY 10, 2024 NHTSA Recall No. : 24V-298 Manufacturer Recall No. : 2024050001/2 Manufacturer Information :
Manufacturer Name : Mercedes-Benz USA, LLC Address : 13470 International Parkway
Jacksonville FL 32218
Company phone : 1-877-496-3691
Population :
Number of potentially involved : 15,604 Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2009-2009 Mercedes-Benz GL320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 GL320BTC 168 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2007-2008 Mercedes-Benz GL320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 GL320CDI 187 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 24V-298 Page 2 Vehicle 3 : 2009-2012 Mercedes-Benz GL350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 GL350BTC 510 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2011-2012 Mercedes-Benz GL350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2011-2012 GL350CDI 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2007-2012 Mercedes-Benz GL450 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2012 GL450 3,826 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2008-2012 Mercedes-Benz GL550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2012 GL550 557 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 3 Vehicle 7 : 2009-2009 Mercedes-Benz ML320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML320BTC 233 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2007-2008 Mercedes-Benz ML320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 ML320CDI 548 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 9 : 2006-2011 Mercedes-Benz ML350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2011 ML350 6,032 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2009-2011 Mercedes-Benz ML350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2011 ML350BTC 256 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 4 Vehicle 11 : 2009-2009 Mercedes-Benz ML350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML350CDI 1 Vehicle. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 12 : 2010-2011 Mercedes-Benz ML450H Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : HYBRID ELECTRIC
Descriptive Information : Mercedes-Benz 2010-2011 ML350H 81 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 13 : 2006-2008 Mercedes-Benz ML500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2008 ML500 484 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 14 : 2008-2011 Mercedes-Benz ML550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2011 ML550 139 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 5 Vehicle 15 : 2007-2011 Mercedes-Benz Mercedes-AMG ML63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2011 Mercedes-AMG ML63 104 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 16 : 2009-2009 Mercedes-Benz R320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 R320BTC 14 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 17 : 2007-2008 Mercedes-Benz R320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 R320CDI 267 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 18 : 2006-2012 Mercedes-Benz R350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2012 R350 1,911 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 6 Vehicle 19 : 2009-2012 Mercedes-Benz R350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 R350BTC 42 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 20 : 2012-2012 Mercedes-Benz R350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2012 R350CDI 2 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 21 : 2006-2007 Mercedes-Benz R500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2007 R500 236 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 22 : 2007-2007 Mercedes-Benz Mercedes-AMG R63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007 Mercedes-AMG R63 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 7 Description of Defect :
Description of the Defect : Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2006-2012 ML, GL (164 platform) and R-Class (251 platform) vehicles, the function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : Description of Safety Risk*
After extended time in the field and in conjunction with significant water exposure, this corrosion might lead to a leakage of the brake booster. In this case, the brake force support might be reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle and/or to potentially increased stopping distance.
Additionally, in rare cases of very severe corrosion, it might be possible for a particularly strong or hard braking maneuver to cause mechanical damage in the brake booster, whereby the connection between brake pedal and brake system would fail. In such a very rare case, it would not be possible to decelerate the vehicle via the service brake.
Thus, the risk of a crash or injury would be increased.
The function of the foot parking brake is not affected by this issue.
Description of the Cause : Moisture may wick under a rubber sleeve that is installed around the brake booster housing for aesthetic reasons. This might result in corrosion in the joint area of the brake booster housing. Identification of Any Warning
that can Occur : Before the issue occurs, the driver might notice a change in the brake pedal feel and/or hissing/airflow noises when applying the brake pedal. Involved Components : Component Name 1 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310427 Component Name 2 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310527 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 8 Component Name 3 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310627 Supplier Identification : Component Manufacturer
Name : Continental Tire the Americas, LLC Address : 1830 MacMillan Park Dr.
Fort Mill North Carolina 29707
Country : United States Chronology :
Please see chronology supplement. Description of Remedy :
Description of Remedy Program : An authorized Mercedes-Benz dealer will remove the rubber sleeve and
inspect the brake booster housing on the affected vehicles. Vehicles that do not exhibit advanced corrosion may continue to be driven with no further action. Vehicles that exhibit advanced corrosion will require a brake booster replacement. The stop-drive notice will remain in effect for these vehicles until the brake booster is replaced. In the event a repair is necessary and cannot be carried out immediately, an authorized Mercedes-Benz dealer will help coordinate an individual solution for the customer, including alternate mobility. Pursuant to 49 C.F.R. § 577.11, MBUSA plans to provide notice about pre- notice reimbursement to owners since some of the involved vehicles could have been previously subject to the condition described. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : Brake booster without rubber sleeve installed. Brake Booster: A2514300000 Modification kit for brake pedal (only needed for a part of the affected vehicles): A2512900000
The issue might occur on all vehicles of the subject models produced up to August 20, 2012. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298
Page 9
The information contained in this report was submitted pursuant to 49 CFR §573
Recall Schedule :
Description of Recall Schedule : MBUSA will issue a stop-drive notice and dealers will be notified of the
voluntary recall campaign on May 10, 2024. MBUSA will issue a stop- drive notice and owners will be notified of the voluntary recall campaign on or before May 24, 2024. A copy of all communications will be provided when available.
Planned Dealer Notification Date : MAY 10, 2024 – NR Planned Owner Notification Date : MAY 24, 2024 – NR
* NR – Not Reported

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24V-298
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Mercedes-Benz USA, LLC MAY 10, 2024 NHTSA Recall No. : 24V-298 Manufacturer Recall No. : 2024050001/2 Manufacturer Information :
Manufacturer Name : Mercedes-Benz USA, LLC Address : 13470 International Parkway
Jacksonville FL 32218
Company phone : 1-877-496-3691
Population :
Number of potentially involved : 15,604 Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2009-2009 Mercedes-Benz GL320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 GL320BTC 168 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2007-2008 Mercedes-Benz GL320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 GL320CDI 187 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 24V-298 Page 2 Vehicle 3 : 2009-2012 Mercedes-Benz GL350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 GL350BTC 510 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2011-2012 Mercedes-Benz GL350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2011-2012 GL350CDI 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2007-2012 Mercedes-Benz GL450 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2012 GL450 3,826 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2008-2012 Mercedes-Benz GL550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2012 GL550 557 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 3 Vehicle 7 : 2009-2009 Mercedes-Benz ML320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML320BTC 233 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2007-2008 Mercedes-Benz ML320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 ML320CDI 548 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 9 : 2006-2011 Mercedes-Benz ML350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2011 ML350 6,032 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2009-2011 Mercedes-Benz ML350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2011 ML350BTC 256 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 4 Vehicle 11 : 2009-2009 Mercedes-Benz ML350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 ML350CDI 1 Vehicle. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing.
Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 12 : 2010-2011 Mercedes-Benz ML450H Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : HYBRID ELECTRIC
Descriptive Information : Mercedes-Benz 2010-2011 ML350H 81 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 13 : 2006-2008 Mercedes-Benz ML500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2008 ML500 484 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 14 : 2008-2011 Mercedes-Benz ML550 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2008-2011 ML550 139 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 5 Vehicle 15 : 2007-2011 Mercedes-Benz Mercedes-AMG ML63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007-2011 Mercedes-AMG ML63 104 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 16 : 2009-2009 Mercedes-Benz R320BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009 R320BTC 14 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 17 : 2007-2008 Mercedes-Benz R320CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2007-2008 R320CDI 267 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 18 : 2006-2012 Mercedes-Benz R350 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2012 R350 1,911 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 6 Vehicle 19 : 2009-2012 Mercedes-Benz R350BTC Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2009-2012 R350BTC 42 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 20 : 2012-2012 Mercedes-Benz R350CDI Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : DIESEL
Descriptive Information : Mercedes-Benz 2012 R350CDI 2 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 21 : 2006-2007 Mercedes-Benz R500 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2006-2007 R500 236 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 22 : 2007-2007 Mercedes-Benz Mercedes-AMG R63 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS
Descriptive Information : Mercedes-Benz 2007 Mercedes-AMG R63 3 Vehicles. The recall population was determined through production records. Vehicles not included in this recall do not utilize an aesthetic rubber sleeve around the brake booster housing. Production Dates : OCT 21, 2004 – AUG 20, 2012
VIN Range 1 : Begin : NR End : NR Not sequential The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 7 Description of Defect :
Description of the Defect : Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2006-2012 ML, GL (164 platform) and R-Class (251 platform) vehicles, the function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : Description of Safety Risk*
After extended time in the field and in conjunction with significant water exposure, this corrosion might lead to a leakage of the brake booster. In this case, the brake force support might be reduced, leading to an increase in the brake pedal forces required to decelerate the vehicle and/or to potentially increased stopping distance.
Additionally, in rare cases of very severe corrosion, it might be possible for a particularly strong or hard braking maneuver to cause mechanical damage in the brake booster, whereby the connection between brake pedal and brake system would fail. In such a very rare case, it would not be possible to decelerate the vehicle via the service brake.
Thus, the risk of a crash or injury would be increased.
The function of the foot parking brake is not affected by this issue.
Description of the Cause : Moisture may wick under a rubber sleeve that is installed around the brake booster housing for aesthetic reasons. This might result in corrosion in the joint area of the brake booster housing. Identification of Any Warning
that can Occur : Before the issue occurs, the driver might notice a change in the brake pedal feel and/or hissing/airflow noises when applying the brake pedal. Involved Components : Component Name 1 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310427 Component Name 2 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310527 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298 Page 8 Component Name 3 : Brake Booster Component Description : Brake Booster Component Part Number : A1644310627 Supplier Identification : Component Manufacturer
Name : Continental Tire the Americas, LLC Address : 1830 MacMillan Park Dr.
Fort Mill North Carolina 29707
Country : United States Chronology :
Please see chronology supplement. Description of Remedy :
Description of Remedy Program : An authorized Mercedes-Benz dealer will remove the rubber sleeve and
inspect the brake booster housing on the affected vehicles. Vehicles that do not exhibit advanced corrosion may continue to be driven with no further action. Vehicles that exhibit advanced corrosion will require a brake booster replacement. The stop-drive notice will remain in effect for these vehicles until the brake booster is replaced. In the event a repair is necessary and cannot be carried out immediately, an authorized Mercedes-Benz dealer will help coordinate an individual solution for the customer, including alternate mobility. Pursuant to 49 C.F.R. § 577.11, MBUSA plans to provide notice about pre- notice reimbursement to owners since some of the involved vehicles could have been previously subject to the condition described. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : Brake booster without rubber sleeve installed. Brake Booster: A2514300000 Modification kit for brake pedal (only needed for a part of the affected vehicles): A2512900000
The issue might occur on all vehicles of the subject models produced up to August 20, 2012. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-298
Page 9
The information contained in this report was submitted pursuant to 49 CFR §573
Recall Schedule :
Description of Recall Schedule : MBUSA will issue a stop-drive notice and dealers will be notified of the
voluntary recall campaign on May 10, 2024. MBUSA will issue a stop- drive notice and owners will be notified of the voluntary recall campaign on or before May 24, 2024. A copy of all communications will be provided when available.
Planned Dealer Notification Date : MAY 10, 2024 – NR Planned Owner Notification Date : MAY 24, 2024 – NR
* NR – Not Reported

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