July 12, 2021 NHTSA CAMPAIGN NUMBER: 21V527000
Side Impact Crash Sensor Connectors May Loosen
Air bags and seatbelts that don’t function as intended can increase the risk of injury during a crash.
NHTSA Campaign Number: 21V527
Manufacturer Mercedes-Benz
USA, LLC
Components AIR BAGS
Potential Number of Units Affected 542
Summary
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 CLS450, AMG E53, AMG CLS53, E350, E450, AMG GT43, AMG GT53, 2020 S450, S560, G550, AMG GLC63, 2020-2021 GLC300, and AMG G63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash.
Remedy
Dealers will inspect and replace as necessary, the side impact crash sensors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA’s number for this recall is 2021070032/33.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Check if your Mercedes-Benz has a Recall
| TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers | FROM: Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services |
| RE: Recall Campaign Initial Notification Check the Side-impact Crash Sensor MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class (213, 222, 253, 257, 290 and 463 platform) | DATE: July 16, 2021 |
IMPORTANT RECALL CAMPAIGN INFORMATION
Please see the attached documents related to the campaign listed above.
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FORMERCEDES.
Sincerely,
Gregory Gunther
Department Manager, Vehicle Compliance & Analysis
| Campaign No. : | NHTSA ID | Campaign Desc. : | Check the Side Crash Sensor | |
| TBA | 21V527 | 21P2197412
21P2197334 | ||
| This is to notify you of a new Recall Campaign to check the side-impact crash sensors on 542 Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles. The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers. Affected VINs will be flagged in VMI as “PENDING” on July 16, 2021. | ||||
| Background | ||||
| Issue | Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles, the locking mechanism for the electrical connector on the side-impact crash sensors might not meet current production specifications. In this case, the side-impact crash sensor connector might loosen over the vehicle’s lifetime. In the event of a side impact crash, this may lead to a delayed activation of the restraint systems, potentially resulting in a reduced restraint performance, which could increase the risk of injury. When the issue occurs, a specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster. | |||
| What We’re Doing | An authorized Mercedes-Benz dealer will check the side-impact crash sensors in the doors on the affected vehicles and replace them, if necessary. | |||
| Parts | Remedy is not available at this time. An additional notification will be sent once the remedy is available. | |||
| Vehicles Affected | ||||
| Vehicle Model Year(s) | 2020-2021 | |||
| Vehicle Model | CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class | |||
| Vehicle Populations | ||||
| Total Recall Population | 542 | |||
| Total Vehicles in Dealer Inventory | 1 | |||
| Given this notice, it is a violation of Federal law for a dealer to sell or lease any new MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class vehicles in dealer inventory covered by this notification until the vehicle has been repaired. Once the remedy is available, the vehicles will be flagged as “OPEN” and Work Instructions will be available in Star TekInfo. Once the repair is complete the vehicle may be sold or leased.
Loaner and demonstrator vehicles may continue to be driven, but must not be retailed until repaired. As a matter of normal service process, please check for other repair measures which might be applicable to the vehicle(s)
Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent new MY20-21 CLS-Class, E-Class, GClass, AMG GT-Class, GLC-Class and S-Class vehicles covered by this notification until the vehicle has been repaired.
| ||||
| Next Steps/Notes | ||||
| Customer Notification Timeline | Customer letters will be mailed after the remedy becomes available. | |||
| AOMS/SOMS | AOMs – This recall may generate questions from your dealers. Please forward this notice to your dealers ASAP. | |||
| Rental Fleet Partners | This recall may affect vehicles in your fleet. Please contact your respective MBUSA fleet representative for further information and next steps. For repairs, please contact your preferred MBUSA 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. | ||||
| TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers | FROM: Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services |
| RE: Recall Campaign Launch Notification Check the Side-impact Crash Sensor MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class (213, 222, 253, 257, 290 and 463 platform) | DATE: August 20, 2021 |
IMPORTANT RECALL CAMPAIGN UPDATE
Please see the attached documents related to the campaign listed above.
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FORMERCEDES.
Sincerely,
Gregory Gunther
Department Manager, Vehicle Compliance & Analysis
| Recall Campaign Launch Notification | August 20, 2021 | ||
| Campaign No. : | NHTSA ID | Campaign Desc. : | Check the Side Crash Sensor |
| 2021070032
2021070033 | 21V527 | 21P9193111
21P9193112 | |
| This is to notify you of the Recall Campaign Launch to check the side-impact crash sensors on 542 Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles. The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers. Affected VINs will be flagged in VMI as “OPEN” on August 20, 2021. | |||
| Background | |||
| Issue | Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles, the locking mechanism for the electrical connector on the side-impact crash sensors might not meet current production specifications. In this case, the side-impact crash sensor connector might loosen over the vehicle’s lifetime. In the event of a side impact crash, this may lead to a delayed activation of the restraint systems, potentially resulting in a reduced restraint
performance, which could increase the risk of injury. When the issue occurs, a specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster. | ||
| What We’re Doing | MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will check the side- impact crash sensors in the doors on the affected vehicles and replace them, if necessary. | ||
| Parts | The remedy is available and can be performed. Please note that the estimated replacement rate is 7%. Parts should only be ordered in the event a replacement is required. | ||
| Vehicles Affected | |||
| Vehicle Model Year(s) | 2020-2021 | ||
| Vehicle Model | CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class | ||
| Vehicle Populations | |||
| Total Recall Population | 542 | ||
| Total Vehicles in Dealer Inventory | 0 | ||
| Given this notice, it is a violation of Federal law for a dealer to sell or lease any new MY20-21 CLS-Class, E-Class, G-Class, AMG GT- Class, GLC-Class and S-Class vehicles in dealer inventory covered by this notification until the vehicle has been repaired. Once the remedy is available, the vehicles will be flagged as “OPEN” and Work Instructions will be available in Star TekInfo. Once the repair is complete the vehicle may be sold or leased.
Loaner and demonstrator vehicles may continue to be driven, but must not be retailed until repaired. As a matter of normal service process, please check for other repair measures which might be applicable to the vehicle(s).
Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent new MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class vehicles covered by this notification until the vehicle has been repaired.
| |||
| Next Steps/Notes | |||
| Customer Notification Timeline | Customer letters will be mailed on September 3, 2021. | ||
| AOMS/SOMS | AOMs – This recall may generate questions from your dealers. Please forward this notice to your dealers ASAP. | ||
| Rental Fleet Partners | This recall may affect vehicles in your fleet. Please contact your respective MBUSA fleet representative for further information and next steps. For repairs, please contact your
preferred MBUSA 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. | |||
Campaign No. 2021070032, August 2021
| TO: | ALL MERCEDES-BENZ CENTERS |
| SUBJECT: | Models various Model year 2020-2021 Check the Side Crash Sensor (Front and Rear Doors) |
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles, the locking mechanism for the electrical connector on the side-impact crash sensors might not meet current production specifications. In this case, the side-impact crash sensor connector might loosen over the vehicle’s lifetime. In the event of a side impact crash, this may lead to a delayed activation of the restraint systems, which could increase the risk of injury. When the issue occurs, a specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster. An authorized Mercedes-Benz dealer will check the side-impact crash sensors in the doors on the affected vehicles and replace them, if necessary.
Prior to performing this Campaign:
- VMI must always 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.
Please note that Recall Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.
Approximately 138 vehicles are affected.
Order No. P-RC- 2021070032
Check airbag-pressure sensors in the front doors and rear doors and replace if necessary Models 213, 222, 253, 257, 290, and 463
Check/test procedure
- Remove door lining on left and right front doors.
For basic data of models 213 and 253, see AR72.10-P-1000LW.
For basic data of model 222, see AR72.10-P-1000LF.
For basic data of models 257 and 290, see AR72.10-P-6575FR.
For basic data of model 463, see AR72.10-P-1000XG.
- Remove door lining on left and right rear doors.
For basic data of models 213 and 253, see AR72.12-P-1010LW.
For basic data of model 222, see AR72.12-P-1010LF.
For basic data of models 257 and 290, see AR72.12-P-1011FR.
For basic data of model 463, see AR72.12-P-1010XG.
- Disconnect the plugs on all four airbag pressure sensors (A, Figure 1) and check whether the two catch tabs (B, Figure 2) are present.
The door modules must not be removed!
Two catch tabs must be present!
Figure 3: Not OK depiction.
a. If there is only one catch tab: Carry out work procedure.
b. If two catch tabs are present: End measure.
Work procedure
- Replace defective airbag pressure sensor.
Up to four airbag pressure sensors can be affected.
For basic data of models 213 and 253, see AR91.60-P-0760LW.
For basic data of model 222, see AR91.60-P-0760LF.
For basic data of models 257 and 290, see AR91.60-P-0760FR.
For basic data of model 463, see AR91.60-P-0760XG.
Contrary to the work instructions in WIS, it is not required to check the supplemental restraint system (SRS) with the diagnostic system.
- Assemble in reverse order.
Primary Parts Information
| Qty. | Part Name | Part Number |
| As required | Airbag pressure sensor | A 213 905 14 00 |
Note:
- The following allowable labor operation should be used when submitting a warranty claim for this repair:
Warranty Information
Operation:
(02-0634) Check airbag pressure sensor in front and rear doors on left and right
Models: 253, 257 and 290
Includes: Remove/install 4 door trims
(02-0634) Check airbag pressure sensor in front and rear doors on left and right
Models: 213 and 222
Includes: Remove/install 4 door trims
(02-0634) Check airbag pressure sensor in front and rear doors on left and right
Model: 463
Includes: Remove/install 4 door trims
(02-0635) Replace one airbag pressure sensor
(after check)
Includes: Disconnect ground line of starter battery
(02-0636)* Replace each remaining airbag pressure sensor
(one pressure sensor removed)
| Damage Code | Operation Number | Labor Time (hrs.) |
| 91 931 11 | 02-0634 Models: 253, 257 and 290 | 1.5 |
| 02-0634 Models: 213 and 222 | 1.6 | |
| 02-0634 Model: 463 | 1.8 | |
| 02-0635 | 0.3 | |
| 02-0636* | 0.1 |
* Use operation item as often as necessary
Note
Always check ASRA for the current OP-Code times. Labor times are subject to change and updates may not be reflected in this document.
P-RC- 2021070032
| TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers | FROM: Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services |
| RE: Recall Campaign Launch Notification Check the Side-impact Crash Sensor MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class (213, 222, 253, 257, 290 and 463 platform) | DATE: August 20, 2021 |
IMPORTANT RECALL CAMPAIGN UPDATE
Please see the attached documents related to the campaign listed above.
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FORMERCEDES.
Sincerely,
Gregory Gunther
Department Manager, Vehicle Compliance & Analysis
| Recall Campaign Launch Notification | August 20, 2021 | ||
| Campaign No. : | NHTSA ID | Campaign Desc. : | Check the Side Crash Sensor |
| 2021070032
2021070033 | 21V527 | 21P9193111
21P9193112 | |
| This is to notify you of the Recall Campaign Launch to check the side-impact crash sensors on 542 Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles. The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers. Affected VINs will be flagged in VMI as “OPEN” on August 20, 2021. | |||
| Background | |||
| Issue | Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles, the locking mechanism for the electrical connector on the side-impact crash sensors might not meet current production specifications. In this case, the side-impact crash sensor connector might loosen over the vehicle’s lifetime. In the event of a side impact crash, this may lead to a delayed activation of the restraint systems, potentially resulting in a reduced restraint performance, which could increase the risk of injury. When the issue occurs, a specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster. | ||
| What We’re Doing | MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will check the side- impact crash sensors in the doors on the affected vehicles and replace them, if necessary. | ||
| Parts | The remedy is available and can be performed. Please note that the estimated replacement rate is 7%. Parts should only be ordered in the event a replacement is required. | ||
| Vehicles Affected | |||
| Vehicle Model Year(s) | 2020-2021 | ||
| Vehicle Model | CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class | ||
| Vehicle Populations | |||
| Total Recall Population | 542 | ||
| Total Vehicles in Dealer Inventory | 0 | ||
| Given this notice, it is a violation of Federal law for a dealer to sell or lease any new MY20-21 CLS-Class, E-Class, G-Class, AMG GT- Class, GLC-Class and S-Class vehicles in dealer inventory covered by this notification until the vehicle has been repaired. Once the remedy is available, the vehicles will be flagged as “OPEN” and Work Instructions will be available in Star TekInfo. Once the repair is complete the vehicle may be sold or leased.
Loaner and demonstrator vehicles may continue to be driven, but must not be retailed until repaired. As a matter of normal service process, please check for other repair measures which might be applicable to the vehicle(s).
Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent new MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class vehicles covered by this notification until the vehicle has been repaired.
| |||
| Next Steps/Notes | |||
| Customer Notification Timeline | Customer letters will be mailed on September 3, 2021. | ||
| AOMS/SOMS | AOMs – This recall may generate questions from your dealers. Please forward this notice to your dealers ASAP. | ||
| Rental Fleet Partners | This recall may affect vehicles in your fleet. Please contact your respective MBUSA fleet representative for further information and next steps. For repairs, please contact your preferred MBUSA 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. | |||
Campaign No. 2021070033, August 2021
| TO: | ALL MERCEDES-BENZ CENTERS |
| SUBJECT: | Models various Model year 2020-2021 Check the Side Crash Sensor (Front doors only) |
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020-2021 E-Class (213 platform), S-Class (222 platform), GLC (253 platform), CLS (257 platform), AMG GT 4-doors coupe (290 platform) and G-Class (463 platform) vehicles, the locking mechanism for the electrical connector on the side-impact crash sensors might not meet current production specifications. In this case, the side-impact crash sensor connector might loosen over the vehicle’s lifetime. In the event of a side impact crash, this may lead to a delayed activation of the restraint systems, which could increase the risk of injury. When the issue occurs, a specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster. An authorized Mercedes-Benz dealer will check the side-impact crash sensors in the doors on the affected vehicles and replace them, if necessary.
Prior to performing this Campaign:
- VMI must always 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.
Please note that Recall Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.
Approximately 404 vehicles are affected.
Order No. P-RC-2021070033
Check airbag pressure sensors in front doors, replace if necessary Models 213, 222, 253, 257, and 290
Check/test procedure
- Remove door lining on left and right front doors.
For basic data of models 213 and 253, see AR72.10-P-1000LW.
For basic data of model 222, see AR72.10-P-1000LF.
For basic data of models 257 and 290, see AR72.10-P-6575FR.
- Disconnect plug from airbag pressure sensors (A, Figure 1) of front doors and check
a. Only one catch tab present: Carry out work procedure.
b. Two catch tabs present: End measure.
Work procedure
- Replace defective airbag pressure sensor.
Up to two airbag pressure sensors may be affected.
For basic data of models 213 and 253, see AR91.60-P-0760LW.
For basic data of model 222, see AR91.60-P-0760LF.
For basic data of models 257 and 290, see AR91.60-P-0760FR.
Contrary to the work instructions in WIS, it is not necessary to check the Supplemental Restraint System (SRS) with the diagnostic system.
- Assemble in reverse order.
Primary Parts Information
| Qty. | Part Name | Part Number |
| As required | Airbag pressure sensor | A 213 905 14 00 |
Small parts such as screws, 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.
Note:
- The following allowable labor operation should be used when submitting a warranty claim for this repair:
Warranty Information
Operation:
(02-0637) Check airbag pressure sensor in left and right front doors
Models: 253, 257, and 290
Includes: Remove/install 2 door trims
(02-0637) Check airbag pressure sensor in left and right front doors
Models: 213 and 222
Includes: Remove/install 2 door trims
(02-0638) Replace one airbag pressure sensor (after check)
Includes: Disconnect ground line of starter battery
(02-0639) Replace a further airbag pressure sensor (one pressure sensor removed)
| Damage Code | Operation Number | Labor Time (hrs.) |
| 91 931 12 | 02-0637 Models: 253, 257, and 290 | 0.9 |
| 02-0637 Models: 213 and 222 | 1.0 | |
| 02-0638 | 0.3 | |
| 02-0639 | 0.1 |
Note
Always check ASRA for the current OP-Code times. Labor times are subject to change and updates may not be reflected in this document.
P-RC-2021070033
Mercedes-Benz Part 573 Submission
Original Submitted to Portal July 12, 2021
Chronology-Only section
Supplement to Original Submission
Chronology of Defect/Noncompliance Determination
In September 2020, MBAG received an initial report from the supplier of the side impact crash sensors describing the possibility that in a certain batch of these sensors, the electrical connector housing might not meet specifications.
Subsequently, potentially affected vehicles were determined based on the production date and serial numbers of the potentially affected sensors as reported by the supplier. In October and November 2020 plant rework campaigns were started to rework potentially affected vehicles. In parallel, analysis of the vehicles’ locations showed that some vehicles with sensors from the batch identified by the supplier had already left the plant.
In December 2020, initial analyses regarding the potential effects of installing an affected sensor were conducted.
Between January and March 2021, further analyses of the potential consequences were conducted based on shaker and shock tests. During these tests, affected sensors were exposed to vibrations and loads which are expected to occur over the vehicle’s lifetime. During these tests, the electrical connectors did not loosen despite the locking mechanism not meeting specifications.
From April 2021, the results of these tests were evaluated and the initial test results did not suggest a deterioration in the performance of the affected sensors. In order to confirm those initial findings, additional analyses of the sensor, connector and wiring harness installation in different affected door variants were conducted in order to determine if there is a possibility of the sensor loosening on a builtup vehicle. Additionally, pull-out forces of the connectors on affected housings were measured.
In June 2021, simulations of the performance of restraint systems and occupant loads in the event of a side impact crash with an already loosened plug connection were performed. The results indicated that should a side impact crash occur in this condition, the necessary restraint systems would be activated by signals from other sensors within the SRS system.
While the analysis indicated that it is unlikely that an affected connector could loosen over the lifetime of the vehicle, it is possible the detection of a side impact crash and activation of the restraint systems might be delayed, which would result in a reduced restraint and protection performance of the vehicle.
On July 2, 2021, MBAG determined that a potential safety risk cannot be ruled out and decided to conduct a recall.
SEOCONTENT-START
September, 2021
Dear Mercedes-Benz Owner:
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has decided that a defect which relates to motor vehicle safety exists in
certain Model Year (“MY”) 2020-2021 E-Class, S-Class, GLC-Class, CLS-Class, AMG GT 4-doors coupe and G-Class vehicles. Our records indicate
that your vehicle is included in the affected population of vehicles.
What is the CONCERN? In certain MY20-21 E-Class, S-Class, GLC-Class, CLS-Class, AMG GT 4-doors coupe and G-Class vehicles, the
locking mechanism for the electrical connector on the side impact crash sensors might not meet current
production specifications. In this case, the side impact crash sensor connector might loosen over time. In the
event of a crash with a side impact, the activation of the air bags and seat belts might be delayed, potentially
resulting in a reduced restraint performance, which could increase the risk of injury. When the issue occurs, a
specific warning message is displayed and the SRS warning lamp is illuminated in the instrument cluster.
What will your DEALER DO? An authorized Mercedes-Benz dealer will check the side impact crash sensors in the doors on the affected
vehicles and replace them, if necessary. This service will be provided free of charge. We are dedicated to
always delivering the best customer experience, and respect for your time is a top priority. While the minimum
repair time can be less than 3 hours, your dealer can provide you with a better estimate of the overall time for
this service visit. As a matter of normal service process, an authorized Mercedes-Benz dealer will also check for
other repair measures that might be applicable to your vehicle which may increase the required working time.
What should YOU DO?
For additional information and to schedule an appointment, please contact your preferred authorized Mercedes-
Benz dealer at your earliest convenience. To locate authorized dealers see www.MBUSA.com/recall. Please
mention you are scheduling an appointment to check the side impact crash sensor under Recall Campaign #
2021070032/33.
You may be asked for your 17-digit Vehicle Identification Number (VIN), which for your convenience is located
above your name at the top of this letter
Impacts from COVID-19: Your health and safety remain our top priority. The Mercedes-Benz dealerships remaining
open for recall repairs and service are closely following the guidelines set forth by the CDC. Free Mobile Repair
at your home or business as well as vehicle pick-up and delivery may be available. Your preferred authorized
Mercedes-Benz dealer can confirm availability
In the event that you are no longer the vehicle owner, or have had a change of address, please complete the
reverse side and return the updated information in the enclosed envelope.
Information for Owners I f this is a leased vehicle and the lessor and registered owner receive this notice, please forward this information
by first class mail to the lessee within 10 business days to comply with Federal Regulations.
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, and whether that vehicle has had the free remedy performed. See www.mbusa.com/recall. Should you have any questions or encounter any
difficulty regarding this Recall Campaign, please contact an authorized Mercedes-Benz dealer. If for any reason a dealer is unable to remedy your
situation, we are always happy to hear from you. Please contact us at 1-(800) FOR-MERCEDES (1-800-367-6372).
If an authorized Mercedes-Benz dealer for any reason is unable to remedy the situation without charge, or within a reasonable amount of time, pursuant
to law 49 U.S.C. Chapter 301, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey
Avenue, S.E., Washington, D.C. 20590 or call the toll-free Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to
https://www.safercar.gov.
We apologize for any inconvenience this situation may cause you.
Sincerely,
Mercedes-Benz USA
To find the most
convenient
authorized
Mercedes-Benz
dealer from your
smartphone,
scan the QR
code to the left.
This notice applies to your vehicle, VIN:
IMPORTANT SAFETY RECALL 2021070032/33
Check the Side Impact Crash Sensor
NHTSA Recall #21V527
• A remedy is available for your vehicle.
• Schedule an appointment with your authorized
Mercedes-Benz dealer as soon as possible.
• This repair will be provided free of charge.
2021070032/33
IMPORTANT
If for any reason YOU NO LONGER OWN THIS VEHICLE OR have a CHANGE OF ADDRESS, please COMPLETE THE SECTION BELOW, place in
the ENCLOSED ENVELOPE, and DROP IN ANY MAIL BOX. If possible, provide the name and address of the present owner so that we may
contact them.
EXPORTED
LEASE, VEHICLE RETURNED
SCRAPPED
SOLD
STOLEN
OTHER
NEW OWNER INFORMATION MY NEW NAME OR ADDRESS IS:
Last Name, First Name
Street Apt
City State ZIP
Email Address
Phone (numbers only) Mobile (numbers only)
———————————————– ———————————————————————————-
Date Signature
**** PLEASE DO NOT DETACH. RETURN COMPLETE LETTER ****
DO NOT USE THE ENCLOSED ENVELOPE FOR OTHER CORRESPONDENCE
VIN:
SEOCONTENT-END
15 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| MERCEDES-BENZ | AMG CLS53 | 2021 |
| MERCEDES-BENZ | AMG E53 | 2021 |
| MERCEDES-BENZ | AMG G63 | 2020-2021 |
| MERCEDES-BENZ | AMG GLC63 | 2020 |
| MERCEDES-BENZ | AMG GT43 | 2021 |
| MERCEDES-BENZ | AMG GT53 | 2021 |
| MERCEDES-BENZ | CLS450 | 2021 |
| MERCEDES-BENZ | E350 | 2021 |
| MERCEDES-BENZ | E450 | 2021 |
| MERCEDES-BENZ | G550 | 2020 |
| MERCEDES-BENZ | GLC300 | 2020-2021 |
| MERCEDES-BENZ | S450 | 2020 |
| MERCEDES-BENZ | S560 | 2020 |
15 Associated Documents
Recall Acknowledgement
RCAK-21V527-1991.pdf 645.103KB
Defect Notice 573 Report
RCLRPT-21V527-4233.PDF 220.292KB
Chronology
RMISC-21V527-0048.pdf 67.821KB
Recall 573 Report – Amendment 1
RCLRPT-21V527-3955.PDF 220.289KB
Recall 573 Report – AMENDMENT 2
RCLRPT-21V527-9496.PDF 220.299KB
Recall 573 Report – AMENDMENT 3
RCLRPT-21V527-3452.PDF 220.288KB
Manufacturer Notices(to Dealers,etc) – Recall Campaign Initial Notification , Check the Side-impact Crash Sensor
RCMN-21V527-2369.pdf 201.036KB
Recall Quarterly Report #2, 2021-4
RCLQRT-21V527-3805.PDF 211.248KB
Remedy Instructions and TSB
RCRIT-21V527-7544.pdf 479.761KB
Remedy Instructions and TSB
RCRIT-21V527-9489.pdf 449.499KB
Recall 573 Report – AMENDMENT 4
RCLRPT-21V527-5018.PDF 220.305KB
ISSUED Owner Notification Letter(Part 577)
RCONL-21V527-9149.pdf 212.571KB
Manufacturer Notices(to Dealers,etc)- Recall Campaign Launch Notification Check the Side-impact Crash Sensor MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class(213, 222, 253, 257, 290 and 463 platform)
RCMN-21V527-7741.pdf 595.265KB
Manufacturer Notices(to Dealers,etc)- Recall Campaign Launch Notification Check the Side-impact Crash Sensor MY20-21 CLS-Class, E-Class, G-Class, AMG GT-Class, GLC-Class and S-Class(213, 222, 253, 257, 290 and 463 platform)
RCMN-21V527-5610.pdf 564.908KB
Recall Quarterly Report #3, 2022-1
RCLQRT-21V527-3677.PDF 211.33KB
Latest Recalls Documents
- [Easy to Use—Work Out of the Box] + [FOXWELL 2026 New Version] FOXWELL NT604 Elite scan tool is the 2026 new version from FOXWELL, designed for car owners who want to figure out the cause of issues before fixing car problems by scanning common systems like ABS, SRS, engine, and transmission. The NT604 Elite obd2 scanner diagnostic tool comes with the latest software—no need to waste time downloading software first. Plug the scanner into the OBDII port with OBDII cable to start the diagnosis.
- [Affordable] + [Reliable Car Health Monitor] Will you be confused what happens when the warning light of ABS/SRS/transmission/check engine flashes? Instead of taking your cars to dealership, this FOXWELL scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. Note：The device is a diagnostic tool, not a repair tool. To turn off a warning light, you must first physically repair the issue causing it. Only then can the scanner be used to clear the corresponding fault code.
- [5 in 1 Car Diagnostic Scanner] Compared with obd scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also serves as ABS/SRS scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance functions like reset or relearn. For the SRS system, NT604 Elite can read and clear common fault codes not caused by a crash, but crash/collision data cannot be cleared.
- [Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite ABS SRS scanner supports 60+ car brands from worldwide (America/Asia/Europe). You don’t need to pay extra software fee. AUTOVIN may not work on some older vehicles or certain vehicle brands. If AUTOVIN fails, please input the vin code manually or go to the Diagnostic Menu to select your vehicle model.
- [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level car scanner diagnostic tool only offers plastic bag to hold the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.
- 【Reset ABS/SRS/Transmission/Engine Lights】 More than an check engine code reader, OBDMATE OM901 obd2 scanner performs comprehensive diagnostics for the 4 most-used systems (ABS/SRS/Engine/Transmission). It quickly clears fault codes, turns off warning lights, read data stream and auto VIN.
- 【3.5" Handheld Scanner with 4 System Diagnose】 3.5" Super large TFT screen equipped displays an intuitive menu and clear readings of various sensors from ABS, SRS, ECM and TCM systems. It arrived with a silicone protective case and hard-shell carrying case, ensuring long-lived durability and drop resistance. The car diagnostic tool is plug-to-play designed, plug it and get diagnosis started without any batteries or updates required.
- 【One-Click I/M Readines&Full OBD2 Functions】 Press F1 to get an intuitive corloured form about whether various emissions-related systems on the vehicle are operating properly. Help you get smog-check ready quickly. OM901 car scanner supports all essential OBD2 functions you need: read & clear codes, view freeze frame, read I/M readiness, retrieve VIN, live data stream (with graphing display), O2 sensor test, onboard monitoring mode, and EVAP leak test.
- 【Battery Voltage Check&DLC Pin Test】 It allows you to monitor battery health by monitoring current battery voltage. Plus, this obd2 diagnostic tool features DLC 16-PIN test to check current voltage of every pin.
- 【Automotive Scanner Diagnostic Kit】 The package comes with 1 car scanner, 1 USB-type c cable, 1 hard storage bag and 1 user manual(en). Free to update without any hidden fees. 5 languanges available in setting including English, French, Italian, German and Espanish. Valuable and Portable, making it a great tool kit for car owners, DIY enthusiasts, and professional mechanics.
- [Diagnose Like a Pro] BlueDriver Pro Next-Gen is a professional OBD2 scanner and diagnostic tool that helps you scan, understand, and clear vehicle trouble codes with confidence. Turn your phone into a powerful car diagnostic scanner—no guesswork, no unnecessary repairs.
- [Read and Clear More Codes Than Ever] Read and clear more codes than basic car code readers. Access enhanced diagnostics for Check Engine, ABS, SRS, Airbag, TPMS, Transmission, and more on supported vehicles, including expanded coverage on newer model years.
- [Verified Fixes and Real-Time Data] Get unlimited, technician-verified repair reports matched to your VIN, with definitions, causes, and confirmed fixes. Monitor live vehicle data as you drive, view freeze frames, check smog readiness, and analyze Mode 6 test results.
- [Expanded Make & Model Coverage] Optimized for today’s vehicles with strong support for GM, Ford, Stellantis (RAM, Jeep, Chrysler), Toyota, Honda, Nissan, Mazda, Subaru, Hyundai, Mercedes-Benz, BMW, and VW. Enhanced communication on select 2024+ Nissan and Mazda models (see compatibility chart).
- [Gas Vehicles 1996+ & Select Light-Duty Trucks] Works with all gas-powered vehicles made in 1996 or newer, plus select light-duty trucks and diesels, including F-250, RAM 2500, Silverado, and Sierra. Built for daily drivers, family vehicles, and real-world truck use.
- 【4 SYSTEMS DIAGNOSTICS OBD2 SCANNER】- More than a standard check engine code reader, this OBD2 scanner diagnostic tool covers Engine, Transmission, SRS (Airbag), and ABS (Anti-lock Brakes) – detecting 90%+ vehicle faults that basic obd scanners miss. It’s a professional car diagnostic scanner designed for both DIYers and small repair shops, saving you trips to expensive mechanics.
- 【3 ESSENTIAL RESET FUNCTIONS FOR HOME MAINTENANCE】-Built-in Oil Reset, EPB Reset, and Battery Match – this car scanner diagnostic tool lets you complete maintenance tasks at home: clear oil change reminders, reset electronic parking brakes after pad replacement, and calibrate new batteries. Skip 50−100$ dealer fees with a scanner for car that turns complex jobs into 5-minute tasks.
- 【COMPATIBILITY WITH 1996+ CARS & SMALL TURCKS】-As a Code reader for cars and small trucks, it supports 9 OBDII protocols (SAE J1850 PWM/SAE J1850 VPW/IS09 141-2/IS0 14230-4 KWP/IS0 15765-4 CAN ETC.) – compatible with most of 1996+ gasoline vehicles and small trucks. Auto VIN automatically identifies your vehicle, making it the easiest vehicle code reader for beginners to use right out of the box.
- 【14 BASIC DIAGNOSTIC FEATURES FOR ALL SCENARIOS】-This car code reader includes Read/Clear DTCs, Live Data Graphs, I/M Readiness Status, Freeze Frame Data, Battery Test, and Oxygen Sensor Monitoring – everything you need for smog test prep, used car inspections, and daily fault checks. It's not just an engine code reader,also a complete diagnostic scanner for all vehicles.
- 【LIFETIME WIFI UPDATES FOR ONGOING COMPATIBILITY】-Unlike outdated odb2 scanners that require paid subscriptions, this OBD2 scanner offers lifetime WiFi updates – get the latest DTC library (100000+ codes) and new vehicle coverage quarterly. No computer needed: connect to WiFi directly, and your car reader diagnostic stays compatible with new models for years.
- [All System Diagnostics, Professional-Level Scanner] - BLCKTEC 460T is the ultimate OBD2 diagnostic tool for home mechanics and professionals. It supports all 10 OBD2 modes, reads and clears Engine/Transmission/ABS/SRS codes, performs All-System Diagnostics, offers workshop reset tools, and provides real-time live data. It helps you pinpoint issues, assess your car's condition, and prepare for SMOG checks with ease. NOTE: Function availability depends on your vehicle. Before you buy, be sure to use the Compatibility Checker on BLCKTEC website or contact our customer support to verify that the features you need are supported for your vehicle’s specific year, make, and model.
- [12+ Most Popular Reset Functions] - BLCKTEC 460T OBD2 scanner offers 12+ dealer-level service functions, including Oil Maintenance Reset, ABS Bleeding, EPB Reset, SAS(Steering Angle Sensor) Recalibration, DPF(Diesel Particulate Filter) Reset, Throttle Body Relearn, Battery Reset/Initialization, TPMS Relearn, Transmission Reset, Fluid Change Reset, Maintenance Reset and more, enabling you to perform workshop services like a pro. NOTE: Function availability depends on your vehicle. Be sure to use the Compatibility Checker on BLCKTEC website to verify that the features you need are supported for your vehicle.
- [Real-Time OBD2 and OEM Live Data, Freeze Frame Data] - BLCKTEC 460T helps diagnose vehicle issues when warning lights like Check Engine Light or ABS/SRS Light appear. It offers detailed DTC info, ECU Freeze Frame Data, and real-time OBD2 and advanced OEM live data, including Engine, Transmission, ABS, SRS, and more, making it easy to diagnose and resolve vehicle problems. You can view, graph, record, replay, and overlay up to four live data streams in a single graph for better analysis.
- [AutoVIN, AutoReLink, AutoScan, 3X Faster] - Equipped with AutoVIN technology, 460T automatically retrieves the VIN to save you time. Its AutoScan and AutoReLink features scan all of the vehicle's ECUs and detect any fault codes immediately after you plug the scanner into the vehicle's OBD2 port - no button presses required. Additionally, it regathers DTC and I/M readiness information every 30 seconds, simplifying monitor tests. 460T's advanced technology makes it 3X faster than other products.
- [Get RepairSolutions2, the #1 Auto Repair App for Free] - When paired with RepairSolutions2(RS2) App, 460T becomes even more powerful. RS2's Verified Fix Database built by master technicians, provides the parts needed for the repair. Additionally, RS2 gives you access to OEM warranty info, maintenance schedules, TSB, and dealership recall info, making car care easier than ever. RS2 is free with no subscription fees and it stores your car scan reports in the cloud, allowing you to access, share, or print them anytime and anywhere.
Last update on 2026-06-12 / Affiliate links / Images from Amazon Product Advertising API
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