Replace ESP Unit – 2021 Mercedes-Benz GLB-Class

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Recall Campaign – Initial Notification

l his notice applies to your vehicle, VIN: Replace !Electronic Stabmty !Program (IESP) llJnit MBUSA m: 2022090009, NHITSA Recall II[): 22V679 I 11P .. 111111111II1111111111111 • Remedy parts are now available for your vehicle. • Schedule an appointment with your authorized Mercedes-Benz dealership as soon as possible. • This repair will be provided FREE of charge. October, 2022 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”) 2021 GLB-Class vehicles. Our records indicate that your vehicle is included in the affected population of vehicles. ffi What is the issue? The Electronic Stability Program (“ESP”) unit might have been damaged during production, which could result in disabled anti-lock brakes (ABS), disabled electronic stability control (ESC) and an electrica l short circuit. Disabled anti-lock brakes and electronic stability control in the vehicle increases the risk of a crash or injury. An electrical short circuit increases the risk of a fire. When the issue occurs, the driver might notice warning lights and warning messages regarding an ESP malfunction in the instrument cluster. What will your MercedeirBenz Dealership do? An authorized Mercedes-Benz dealer will rep lace the ESP unit on the affected vehicles. l his service wm 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 overa ll time for this service visit. As a matter of normal service process, an authorized Mercedes-Benz dealer will also check for other repair measures which might be applicable to your vehicle and this may increase the required working time. Steps to take. • Find your nearest authorized Mercedes-Benz dealersh ip at mbusa.com/recall to schedule your reca ll repair. • Please mention you are scheduling an appointment for Mercedes-Benz Recall Campaign 2022090009 • You may be asked for your VIN, which for your convenience is located at the top of this letter. • Impacts from COVID-19: Your health and safety remain our top priority. The Mercedes-Benz dealerships are closely following the guidelines set forth by the CDC. Vehicle pick-up and delivery may be available. Your preferred authorized Mercedes-Benz dealer can confirm availability We apologize for any inconvenience th is may have caused and look forward to taking care of this important safety reca ll immediately. Sincerely, Mercedes-Benz USA What of I no longer own or drive the vehicle or would like to update my contact information? In the event you need to update your contact information or have updates concern ing the vehicle, please visit mbusa.com/ recalls (or scan the QR Code to the left) and submit your VIN using our VIN recall lookup tool and filling out the “Reca ll Contact Information” section on the website. If possible, • please provide any contact information oft he current owner/driver so we can contact them. Additional Information for Owners: A VIN-based reca ll lookup tool is available at mbusa.com/recab, which can be used to check whether a vehic le has been subject to a safety reca ll, or had the remedy performed. Should you have any questions or encounter any difficulty regarding this Recall Campaign, please contact an authorized Mercedes-Benz dealership. Should an authorized Mercedes-Benz dealership be unable to address your concerns please contact us at 1-{800) FORMIERCIEDIES (1=80~67-6372). We are always happy to hear from you. If 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. If an authorized Mercedes-Benz dealer for any reason is unable to remedy the situation without charge, or within a reasonab le amount of t ime, 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 to llfree Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to https://www.safercar.gov.

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Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600 News Channel Update | Vehicle Compliance & Analysis 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-FOR-MERCEDES. Sincerely, Gregory Gunther Department Manager, Vehicle Compliance & Analysis 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 Replace ESP Unit MY21 GLB-Class (247 platform) DATE: September 19, 2022 Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600 News Channel Update | Vehicle Compliance & Analysis Recall Campaign Initial Notification September 19, 2022 Campaign No. : NHTSA ID Campaign Desc. : Replace ESP Unit TBA 22V679 22P2197558 This is to notify you of a new Recall Campaign to replace the ESP unit on 4 Model Year (“MY”) 2021 GLB-Class (247 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 September 19, 2022. Background Issue Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. What We’re Doing MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. Parts Remedy is not available at this time. Vehicles Affected Vehicle Model Year(s) 2021 Vehicle Model GLB-Class Vehicle Populations Total Recall Population 4 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 MY21 GLB-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 Xentry. 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 MY21 GLB-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.

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Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600 News Channel Update | Vehicle Compliance & Analysis 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-FOR-MERCEDES. Sincerely, Gregory Gunther Department Manager, Vehicle Compliance & Analysis 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 Replace ESP Unit MY21 GLB-Class (247 platform) DATE: October 21, 2022 Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600 News Channel Update | Vehicle Compliance & Analysis Recall Campaign Launch Notification October 21, 2022 Campaign No. : NHTSA ID Campaign Desc. : Replace ESP Unit 2022090009 22V679 22P4290009 This is to notify you of the Recall Campaign Launch to replace the ESP unit on 4 Model Year (“MY”) 2021 GLB-Class (247 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 October 21, 2022. Background Issue Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. What We’re Doing MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. Parts The remedy is available and can be performed. Vehicles Affected Vehicle Model Year(s) 2021 Vehicle Model GLB-Class Vehicle Populations Total Recall Population 4 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 MY21 GLB-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 Xentry. 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 MY21 GLB-Class vehicles covered by this notification until the vehicle has been repaired. Next Steps/Notes Customer Notification Timeline Customer letters will be mailed on 10/28/2022. 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. 2022090009, October 2022 TO: ALL MERCEDES-BENZ CENTERS SUBJECT: Model GLB (247 platform) Model Year 2021 Replace ESP Unit Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. 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. Approximately 4 vehicles are affected. Order No. P-RC-2022090009 This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data Control, and MBUSA-SLP S424HH001, Control of Quality Records. 2 P-RC-2022090009 Replace Electronic Stability Program (ESP(R)) hydraulic unit of brake system Work Procedure 1. Replace Electronic Stability Program (ESP(R)) hydraulic unit (AR42.40-P-0816MFA). __________________________________________________________________________________________________ Primary Parts Information Qty. Part Name Part Number 1 ESP hydraulic unit A 177 900 30 10 As required Brake fluid (1 liter) A 000 989 56 05 11 * 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, 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 Damage Code Operation Number Description Labor Time (hrs.) 42 900 09 02-0157 Replace Electronic Stability Program (ESP(R)) hydraulic unit of brake system 2.3 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.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-679 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mercedes-Benz USA, LLC Submission Date : SEP 12, 2022 NHTSA Recall No. : 22V-679 Manufacturer Recall No. : NR 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 : 4 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2021 Mercedes-Benz GLB250 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : Mercedes-Benz 2021 GLB-Class 4 Vehicles The recall population was determined through production records. Vehicles outside of the recall population have the ESP unit meet current production specifications. Production Dates : OCT 19, 2020 – OCT 20, 2020 VIN Range 1 : Begin : NR End : NR Not sequential 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”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. Part 573 Safety Recall Report 22V-679 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : The ESP units of the potentially affected vehicles might have been damaged in the logistics process. Identification of Any Warning that can Occur : When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. Involved Components : Component Name 1 : ESP unit Component Description : ESP unit (series part number) Component Part Number : A1779008005 Supplier Identification : Component Manufacturer Name : Robert Bosch GmbH Address : Blaichach Plant Robert-Bosch-Strasse 1 Immenstadt Foreign States 87509 Country : Germany Chronology : In October 2020, MBAG launched initial investigations based on internal reports from the vehicle assembly plant after ESP malfunctions were detected during the vehicle end-of-line test. Subsequent analysis by the supplier was conducted and in January 2021 it was concluded that the observed malfunctions were caused by mechanical damage to the ESP units. Between February and April 2021, analyses in the vehicle assembly plant were conducted to identify the cause for the observed damages. It was determined that the affected ESP units were damaged during removal from the vehicles in the assembly plant. Therefore, it was concluded that no relevance for vehicles in the field existed. In the end of September 2021, MBAG was informed by the supplier that analyses of malfunctioning ESP units from the field identified mechanical damage to be the root cause. From October 2021 onwards, investigations with the vehicle assembly plant were resumed in order to analyze how the damage on ESP units installed in vehicles could occur. In the course of the ongoing investigations, the analysis of serial number data from ESP units that exhibited malfunctions in the field rendered that all of those units were part of the same batch. Subsequently, vehicles equipped with ESP units from the potentially affected batch were identified by analyzing production records and from December 2021 onwards, a plant rework campaign was started in order to block and rework vehicles still in the plant and logistics process and to identify potentially affected vehicles in the field. Part 573 Safety Recall Report 22V-679 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 In the further course of the analyses – and contrary to earlier assumptions – it was concluded that the batch of potentially affected ESP units might have been damaged during handling in the vehicle assembly plant before installation into the vehicles. Between May and July 2022, potential consequences of the issue were evaluated and the field complaint situation was analyzed. Please see Chronology Supplement. Description of Remedy : Description of Remedy Program : An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. Pursuant to 49 C.F.R. § 577.11(e), MBUSA does not plan to provide notice about pre-notice reimbursement to owners since none of the involved vehicles would have been previously subject to the condition described and all remain covered under the new vehicle warranty. How Remedy Component Differs from Recalled Component : ESP unit not damaged. Remedy Parts: A1779008105 – ESP unit (spare part part number) Identify How/When Recall Condition was Corrected in Production : A change in the production processes ensures that this issue can no longer occur from October 26, 2020 onwards. Recall Schedule : Description of Recall Schedule : Dealers will be notified of the pending voluntary recall campaign on September 19, 2022. Owners will be notified of the voluntary recall campaign before November 11, 2022. A copy of all communications will be provided when available. Planned Dealer Notification Date : SEP 19, 2022 – NR Planned Owner Notification Date : NOV 11, 2022 – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-679 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mercedes-Benz USA, LLC Submission Date : SEP 15, 2022 NHTSA Recall No. : 22V-679 Manufacturer Recall No. : NR 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 : 4 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2021 Mercedes-Benz GLB250 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : Mercedes-Benz 2021 GLB-Class 4 Vehicles The recall population was determined through production records. Vehicles outside of the recall population have the ESP unit meet current production specifications. Production Dates : OCT 19, 2020 – OCT 20, 2020 VIN Range 1 : Begin : NR End : NR Not sequential 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”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. Part 573 Safety Recall Report 22V-679 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : The ESP units of the potentially affected vehicles might have been damaged in the logistics process. Identification of Any Warning that can Occur : When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. Involved Components : Component Name 1 : ESP unit Component Description : ESP unit (series part number) Component Part Number : A1779008005 Supplier Identification : Component Manufacturer Name : Robert Bosch GmbH Address : Blaichach Plant Robert-Bosch-Strasse 1 Immenstadt Foreign States 87509 Country : Germany Chronology : In October 2020, MBAG launched initial investigations based on internal reports from the vehicle assembly plant after ESP malfunctions were detected during the vehicle end-of-line test. Subsequent analysis by the supplier was conducted and in January 2021 it was concluded that the observed malfunctions were caused by mechanical damage to the ESP units. Between February and April 2021, analyses in the vehicle assembly plant were conducted to identify the cause for the observed damages. It was determined that the affected ESP units were damaged during removal from the vehicles in the assembly plant. Therefore, it was concluded that no relevance for vehicles in the field existed. In the end of September 2021, MBAG was informed by the supplier that analyses of malfunctioning ESP units from the field identified mechanical damage to be the root cause. From October 2021 onwards, investigations with the vehicle assembly plant were resumed in order to analyze how the damage on ESP units installed in vehicles could occur. In the course of the ongoing investigations, the analysis of serial number data from ESP units that exhibited malfunctions in the field rendered that all of those units were part of the same batch. Subsequently, vehicles equipped with ESP units from the potentially affected batch were identified by analyzing production records and from December 2021 onwards, a plant rework campaign was started in order to block and rework vehicles still in the plant and logistics process and to identify potentially affected vehicles in the field. Part 573 Safety Recall Report 22V-679 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 In the further course of the analyses – and contrary to earlier assumptions – it was concluded that the batch of potentially affected ESP units might have been damaged during handling in the vehicle assembly plant before installation into the vehicles. Between May and July 2022, potential consequences of the issue were evaluated and the field complaint situation was analyzed. Please see updated Chronology Supplement. Description of Remedy : Description of Remedy Program : An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. Pursuant to 49 C.F.R. § 577.11(e), MBUSA does not plan to provide notice about pre-notice reimbursement to owners since none of the involved vehicles would have been previously subject to the condition described and all remain covered under the new vehicle warranty. How Remedy Component Differs from Recalled Component : ESP unit not damaged. Remedy Parts: A1779008105 – ESP unit (spare part part number) Identify How/When Recall Condition was Corrected in Production : A change in the production processes ensures that this issue can no longer occur from October 26, 2020 onwards. Recall Schedule : Description of Recall Schedule : Dealers will be notified of the pending voluntary recall campaign on September 19, 2022. Owners will be notified of the voluntary recall campaign before November 11, 2022. A copy of all communications will be provided when available. Planned Dealer Notification Date : SEP 19, 2022 – NR Planned Owner Notification Date : NOV 11, 2022 – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-679 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mercedes-Benz USA, LLC Submission Date : OCT 24, 2022 NHTSA Recall No. : 22V-679 Manufacturer Recall No. : 2022090009 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 : 4 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2021 Mercedes-Benz GLB250 Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : Mercedes-Benz 2021 GLB-Class 4 Vehicles The recall population was determined through production records. Vehicles outside of the recall population have the ESP unit meet current production specifications. Production Dates : OCT 19, 2020 – OCT 20, 2020 VIN Range 1 : Begin : NR End : NR Not sequential 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”) 2021 GLB (247 platform) vehicles, the Electronic Stability Program (“ESP”) unit might have been damaged mechanically. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In this case, moisture might ingress into the ESP control unit and internal components of the ESP unit might be affected from prior damage. As a consequence, ESP functions (e.g. vehicle stability control, ABS) might be deactivated and a risk of fire due to an internal short circuit cannot be ruled out. This could increase the risk of a crash or injury. Part 573 Safety Recall Report 22V-679 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : The ESP units of the potentially affected vehicles might have been damaged in the logistics process. Identification of Any Warning that can Occur : When the issue occurs, the driver might notice illuminated warning lamps and warning messages regarding an ESP malfunction in the instrument cluster. Involved Components : Component Name 1 : ESP unit Component Description : ESP unit (series part number) Component Part Number : A1779008005 Supplier Identification : Component Manufacturer Name : Robert Bosch GmbH Address : Blaichach Plant Robert-Bosch-Strasse 1 Immenstadt Foreign States 87509 Country : Germany Chronology : In October 2020, MBAG launched initial investigations based on internal reports from the vehicle assembly plant after ESP malfunctions were detected during the vehicle end-of-line test. Subsequent analysis by the supplier was conducted and in January 2021 it was concluded that the observed malfunctions were caused by mechanical damage to the ESP units. Between February and April 2021, analyses in the vehicle assembly plant were conducted to identify the cause for the observed damages. It was determined that the affected ESP units were damaged during removal from the vehicles in the assembly plant. Therefore, it was concluded that no relevance for vehicles in the field existed. In the end of September 2021, MBAG was informed by the supplier that analyses of malfunctioning ESP units from the field identified mechanical damage to be the root cause. From October 2021 onwards, investigations with the vehicle assembly plant were resumed in order to analyze how the damage on ESP units installed in vehicles could occur. In the course of the ongoing investigations, the analysis of serial number data from ESP units that exhibited malfunctions in the field rendered that all of those units were part of the same batch. Subsequently, vehicles equipped with ESP units from the potentially affected batch were identified by analyzing production records and from December 2021 onwards, a plant rework campaign was started in order to block and rework vehicles still in the plant and logistics process and to identify potentially affected vehicles in the field. Part 573 Safety Recall Report 22V-679 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 In the further course of the analyses – and contrary to earlier assumptions – it was concluded that the batch of potentially affected ESP units might have been damaged during handling in the vehicle assembly plant before installation into the vehicles. Between May and July 2022, potential consequences of the issue were evaluated and the field complaint situation was analyzed. Please see updated Chronology Supplement. Description of Remedy : Description of Remedy Program : An authorized Mercedes-Benz dealer will replace the ESP unit on the affected vehicles. Pursuant to 49 C.F.R. § 577.11(e), MBUSA does not plan to provide notice about pre-notice reimbursement to owners since none of the involved vehicles would have been previously subject to the condition described and all remain covered under the new vehicle warranty. How Remedy Component Differs from Recalled Component : ESP unit not damaged. Remedy Parts: A1779008105 – ESP unit (spare part part number) Identify How/When Recall Condition was Corrected in Production : A change in the production processes ensures that this issue can no longer occur from October 26, 2020 onwards. Recall Schedule : Description of Recall Schedule : Dealers will be notified of the pending voluntary recall campaign on September 19, 2022. Owners will be notified of the voluntary recall campaign on October 28, 2022. A copy of all communications will be provided when available. Planned Dealer Notification Date : SEP 19, 2022 – NR Planned Owner Notification Date : OCT 28, 2022 – NR * NR – Not Reported

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