Inspect 12V Ground Connection – 2022-2023 Mercedes-Benz S-Class

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-554 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mercedes-Benz USA, LLC Submission Date : AUG 04, 2023 NHTSA Recall No. : 23V-554 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 : 73 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2023 Mercedes-Benz Maybach S580 Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : 57 vehicles. The recall population was determined through production records. Vehicles outside of the recall population have a properly grounded 12V connection. Production Dates : AUG 27, 2021 – OCT 20, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Mercedes-Benz Maybach S680 Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : 16 vehicles. The recall population was determined through production records. Vehicles outside of the recall population have a properly grounded 12V connection. Production Dates : AUG 27, 2021 – OCT 20, 2022 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 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In this case, the connection might loosen over time and the electrical resistance at the connection may increase. Depending on the vehicle Part 573 Safety Recall Report 23V-554 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 configuration, certain functions of the ESP might be deactivated or the temperature on this connection could increase due to the high electrical currents. This might increase the risk of a crash or fire. Description of the Cause : The sound dampening material for the side wall in the trunk might be clamped between the ground connection cable lug and the side wall. Identification of Any Warning that can Occur : Before the issue occurs, the driver will not receive a warning due to the nature of the failure mechanism. When the issue occurs, the driver might notice a warning message in the instrument cluster. Involved Components : Component Name 1 : Battery Sensor Component Description : Battery Sensor Component Part Number : A0009052815 Component Name 2 : Battery Sensor Component Description : Battery Sensor Component Part Number : A2239057910 Component Name 3 : Side Wall Dampening Component Description : Side Wall Dampening Component Part Number : A2236820404 Component Name 4 : Side Wall Dampening Component Description : Side Wall Dampening Component Part Number : A2236820604 Component Name 5 : Hinge Pivot Component Description : Hinge Pivot Component Part Number : A0009917603 Part 573 Safety Recall Report 23V-554 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : Mercedes-Benz AG Address : NR Foreign States Country : Germany Chronology : In October 2022, during its ongoing internal production quality process, MBAG became aware of an irregularity concerning one specific ground connection case. In this specific case the sound dampening material at the trunk side wall was clamped between the grounding connection cable lug and the side-wall of the vehicle. Subsequently, MBAG conducted investigations whether this could potentially affect additional vehicles. At the end of 2022, MBAG commenced tests to investigate the effects of a clamped dampening material on those ground connections. MBAG further identified the consequential electrical resistance and conducted analyses on the effects to the components connected to this ground connection. At the same time as the analyses, MBAG adapted the monitoring process for the affected connection in production, to identify any clamped dampening material. From March to April 2023, MBAG commenced thermal tests. Up until mid- May 2023, in parallel, the fastening curve diagram of each individual potentially affected vehicle was analyzed and evaluated to identify the vehicles that may potentially be affected by clamped dampening material. Furthermore as an additional measure, an adapted design change for the side-wall dampening material was introduced in June 2023. On July 28, 2023, MBAG determined that a potential safety risk cannot be ruled out and decided to conduct a recall. MBAG can confirm there are no warranty claims, field or service reports, or other information related to this defect in the USA. Description of Remedy : Description of Remedy Program : An authorized Mercedes-Benz dealer will inspect the 12V ground connection on the affected vehicles and perform repairs, if necessary. 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 : Vehicles outside of the recall population have a properly grounded 12V connection. Remedy Parts: A0009052815-Battery Sensor, A2239057910- Battery Sensor, A2236824405-Side Wall Dampening, A2236824605-Side Wall Dampening, A0009917603-Hinge Pivot Part 573 Safety Recall Report 23V-554 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Identify How/When Recall Condition was Corrected in Production : A change in the production monitoring process ensures that this issue can no longer occur from April 13, 2023 onwards. Recall Schedule : Description of Recall Schedule : Dealers will be notified of the pending voluntary recall campaign on August 11, 2023. Owners will be notified of the voluntary recall campaign on or before October 3, 2023. A copy of all communications will be provided when available. Planned Dealer Notification Date : AUG 11, 2023 – NR Planned Owner Notification Date : OCT 03, 2023 – NR * NR – Not Reported

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Recall Campaign Initial Notification
DATE: August 11, 2023

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 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 Initial Notification Inspect 12V Ground Connection MY22-23 S-Class (223 platform) DATE: August 11, 2023 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 August 11, 2023 Campaign No. : NHTSA ID Campaign Desc. : Inspect 12V Ground Connection TBD 23V554 23P2197628 This is to notify you of the new Recall Campaign to inspect the 12V ground on 73 Model Year (“MY”) 2022-2023 S-Class (223 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 “PENDING” on August 11, 2023. Background Issue Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications and may loosen over time. Depending on the vehicle configuration, certain functions of the ESP might be deactivated or the temperature at this connection may increase due to the high electrical currents. This may increase the risk of a crash or fire. What We’re Doing MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will inspect the 12V ground connection and perform repairs, if necessary. Parts Remedy is not available at this time. Vehicles Affected Vehicle Model Year(s) 2022-2023 Vehicle Model S-Class Vehicle Populations Total Recall Population 73 Total Vehicles in Dealer Inventory 3 Given this notice, it is a violation of Federal law for a dealer to sell or lease any new 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 NetStar VMI and Xentry Portal. 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 vehicles covered by this notification until the vehicle has been repaired. Next Steps/Notes Customer Notification Timeline Customer letters will be mailed on or before October 3, 2023. 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. Customer Reimbursement Customer reimbursement is not being offered for this campaign. 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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Recall Campaign Launch Notification
DATE: September 1, 2023

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 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 Inspect 12V Ground Connection MY22-23 S-Class (223 platform) DATE: September 1, 2023 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 September 1, 2023 Campaign No. : NHTSA ID Campaign Desc. : Inspect 12V Ground Connection 2023080008 23V554 23P6891002 This is to notify you of a Recall Campaign Launch to inspect the 12V ground on 73 Model Year (“MY”) 2022-2023 S-Class (223 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 September 1, 2023. Background Issue Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications and may loosen over time. Depending on the vehicle configuration, certain functions of the ESP might be deactivated or the temperature at this connection may increase due to the high electrical currents. This may increase the risk of a crash or fire. What We’re Doing MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will inspect the 12V ground connection and perform repairs, if necessary. Parts The remedy is available and can be performed. Vehicles Affected Vehicle Model Year(s) 2022-2023 Vehicle Model S-Class Vehicle Populations Total Recall Population 73 Total Vehicles in Dealer Inventory 3 Given this notice, it is a violation of Federal law for a dealer to sell or lease any new 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 NetStar VMI and Xentry Portal. 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 vehicles covered by this notification until the vehicle has been repaired. Next Steps/Notes Customer Notification Timeline Customer letters will be mailed on or before October 3, 2023. 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. Customer Reimbursement Customer reimbursement is not being offered for this campaign. 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. 2 Campaign No.2023080008, September 2023 TO: ALL MERCEDES-BENZ CENTERS SUBJECT: Model S-Class (223 platform) Model Year 2022-2023 Inspect 12V Ground Connection Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications and may loosen over time. Depending on the vehicle configuration, certain functions of the ESP might be deactivated or the temperature at this connection may increase due to the high electrical currents. This may increase the risk of a crash or fire. An authorized Mercedes-Benz dealer will inspect the 12V ground connection and perform repairs, if 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 73 vehicles are affected. Order No. P-RC-2023080008 2 P-RC-2023080008 Inspect 12V Ground Connection Work Procedure 1. Switch off ignition and keep transmitter keys outside of transmitting range (at least 6 m). 2. Remove right side trim in trunk (Figure 1). For basic data, see AR68.30-P-4800S. Figure 1 3. Remove ground line (A, Figure 2) of battery sensor (B95/3) of auxiliary battery from body. Figure 2 3 P-RC-2023080008 4. Check contact surfaces at lug of ground line and weld stud for damage (Figure 3). The possibility exists that the insulation mat at the wheel arch was slightly jammed under the ground line. Figure 3 a. Lug of ground line and ground bolt not damaged: Carry out Work Procedure A. b. Lug of ground line or weld stud damaged: Carry out Work Procedure B. Work Procedure A 1. Slide the lug of ground line onto the weld stud and tighten it. Ensure that the insulation mat is not jammed between the lug and contact surface of the weld stud! After tightening, check insulation mat again for clearance around the weld stud. Attention: Weld stud is made from aluminum, observe tightening torque! Ground line to body weld stud 7 Nm Work Procedure B 1. Replace damaged ground line with battery sensor and/or weld stud. 4 P-RC-2023080008 Primary Parts Information Qty. Part Name Part Number As required (1*) Ground line with battery sensor * As required (1*) Weld stud * * 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.) 68 910 02 12-1824 Check ground connection of auxiliary battery at right rear wheel well Includes: Work Procedure A 0.5 12-1825 Rework ground connection of auxiliary battery at right rear wheel well (after check) Includes: Work Procedure B ZM 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.

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Recall Campaign Launch Notification
DATE: September 1, 2023
Revision A 9/12/2023

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 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 Inspect 12V Ground Connection MY22-23 S-Class (223 platform) DATE: September 1, 2023 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 September 1, 2023 Campaign No. : NHTSA ID Campaign Desc. : Inspect 12V Ground Connection 2023080008 23V554 23P6891002 This is to notify you of a Recall Campaign Launch to inspect the 12V ground on 73 Model Year (“MY”) 2022-2023 S-Class (223 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 September 1, 2023. Background Issue Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications and may loosen over time. Depending on the vehicle configuration, certain functions of the ESP might be deactivated or the temperature at this connection may increase due to the high electrical currents. This may increase the risk of a crash or fire. What We’re Doing MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will inspect the 12V ground connection and perform repairs, if necessary. Parts The remedy is available and can be performed. Vehicles Affected Vehicle Model Year(s) 2022-2023 Vehicle Model S-Class Vehicle Populations Total Recall Population 73 Total Vehicles in Dealer Inventory 3 Given this notice, it is a violation of Federal law for a dealer to sell or lease any new 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 NetStar VMI and Xentry Portal. 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 vehicles covered by this notification until the vehicle has been repaired. Next Steps/Notes Customer Notification Timeline Customer letters will be mailed on or before October 3, 2023. 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. Customer Reimbursement Customer reimbursement is not being offered for this campaign. 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. 2 Campaign No.2023080008, September 2023 Revision A 9/12/2023 TO: ALL MERCEDES-BENZ CENTERS SUBJECT: Model S-Class (223 platform) Model Year 2022-2023 Inspect 12V Ground Connection Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications and may loosen over time. Depending on the vehicle configuration, certain functions of the ESP might be deactivated or the temperature at this connection may increase due to the high electrical currents. This may increase the risk of a crash or fire. An authorized Mercedes-Benz dealer will inspect the 12V ground connection and perform repairs, if 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 73 vehicles are affected. Order No. P-RC-2023080008 2 P-RC-2023080008 Inspect 12V Ground Connection Work Procedure 1. Switch off ignition and keep transmitter keys outside of transmitting range (at least 6 m). 2. Remove right side trim in trunk (Figure 1). For basic data, see AR68.30-P-4800S. Figure 1 3 P-RC-2023080008 3. Remove ground line (A, Figure 2) of battery sensor (B95/3) of auxiliary battery from body. For vehicles without code ME 10 (Hybrid vehicle (plug-in, PHEV), the ground line runs from the secondary 12 V on-board electrical system battery to the ground point (A, Figure 2). For vehicles with code ME 10 (Hybrid vehicle (plug-in, PHEV), the ground line runs from the windshield heater control unit to the ground point (A, Figure 3). Figure 2, shown on vehicles without code ME 10 (Hybrid vehicle (plug-in, PHEV) Figure 3, shown on vehicles with code ME 10 (Hybrid vehicle (plug-in, PHEV) 4 P-RC-2023080008 4. Check contact surfaces at lug of ground line and weld stud for damage (Figure 3). The possibility exists that the insulation mat at the wheel arch was slightly jammed under the ground line. Figure 4 a. Lug of ground line and ground bolt not damaged: Carry out Work Procedure A. b. Lug of ground line or weld stud damaged: Carry out Work Procedure B. Work Procedure A 1. Slide the lug of ground line onto the weld stud and tighten it. Ensure that the insulation mat is not jammed between the lug and contact surface of the weld stud! After tightening, check insulation mat again for clearance around the weld stud. Attention: Weld stud is made from aluminum, observe tightening torque! Ground line to body weld stud 7 Nm Work Procedure B 1. Replace damaged ground line with battery sensor and/or weld stud. 5 P-RC-2023080008 Primary Parts Information Qty. Part Name Part Number As required (1*) Ground line with battery sensor * As required (1*) Weld stud * * 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.) 68 910 02 12-1824 Check ground connection of auxiliary battery at right rear wheel well Includes: Work Procedure A 0.5 12-1825 Rework ground connection of auxiliary battery at right rear wheel well (after check) Includes: Work Procedure B ZM 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.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-554 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mercedes-Benz USA, LLC Submission Date : SEP 01, 2023 NHTSA Recall No. : 23V-554 Manufacturer Recall No. : 2023080008 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 : 73 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2023 Mercedes-Benz Maybach S580 Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : 57 vehicles. The recall population was determined through production records. Vehicles outside of the recall population have a properly grounded 12V connection. Production Dates : AUG 27, 2021 – OCT 20, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Mercedes-Benz Maybach S680 Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : 16 vehicles. The recall population was determined through production records. Vehicles outside of the recall population have a properly grounded 12V connection. Production Dates : AUG 27, 2021 – OCT 20, 2022 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 2022-2023 S-Class (223 platform) vehicles, a 12V ground connection in the trunk might not meet specifications. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In this case, the connection might loosen over time and the electrical resistance at the connection may increase. Depending on the vehicle Part 573 Safety Recall Report 23V-554 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 configuration, certain functions of the ESP might be deactivated or the temperature on this connection could increase due to the high electrical currents. This might increase the risk of a crash or fire. Description of the Cause : The sound dampening material for the side wall in the trunk might be clamped between the ground connection cable lug and the side wall. Identification of Any Warning that can Occur : Before the issue occurs, the driver will not receive a warning due to the nature of the failure mechanism. When the issue occurs, the driver might notice a warning message in the instrument cluster. Involved Components : Component Name 1 : Battery Sensor Component Description : Battery Sensor Component Part Number : A0009052815 Component Name 2 : Battery Sensor Component Description : Battery Sensor Component Part Number : A2239057910 Component Name 3 : Side Wall Dampening Component Description : Side Wall Dampening Component Part Number : A2236820404 Component Name 4 : Side Wall Dampening Component Description : Side Wall Dampening Component Part Number : A2236820604 Component Name 5 : Hinge Pivot Component Description : Hinge Pivot Component Part Number : A0009917603 Part 573 Safety Recall Report 23V-554 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : Mercedes-Benz AG Address : NR Foreign States Country : Germany Chronology : In October 2022, during its ongoing internal production quality process, MBAG became aware of an irregularity concerning one specific ground connection case. In this specific case the sound dampening material at the trunk side wall was clamped between the grounding connection cable lug and the side-wall of the vehicle. Subsequently, MBAG conducted investigations whether this could potentially affect additional vehicles. At the end of 2022, MBAG commenced tests to investigate the effects of a clamped dampening material on those ground connections. MBAG further identified the consequential electrical resistance and conducted analyses on the effects to the components connected to this ground connection. At the same time as the analyses, MBAG adapted the monitoring process for the affected connection in production, to identify any clamped dampening material. From March to April 2023, MBAG commenced thermal tests. Up until mid- May 2023, in parallel, the fastening curve diagram of each individual potentially affected vehicle was analyzed and evaluated to identify the vehicles that may potentially be affected by clamped dampening material. Furthermore as an additional measure, an adapted design change for the side-wall dampening material was introduced in June 2023. On July 28, 2023, MBAG determined that a potential safety risk cannot be ruled out and decided to conduct a recall. MBAG can confirm there are no warranty claims, field or service reports, or other information related to this defect in the USA. Description of Remedy : Description of Remedy Program : An authorized Mercedes-Benz dealer will inspect the 12V ground connection on the affected vehicles and perform repairs, if necessary. 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 : Vehicles outside of the recall population have a properly grounded 12V connection. Remedy Parts: A0009052815-Battery Sensor, A2239057910- Battery Sensor, A2236824405-Side Wall Dampening, A2236824605-Side Wall Dampening, A0009917603-Hinge Pivot Part 573 Safety Recall Report 23V-554 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Identify How/When Recall Condition was Corrected in Production : A change in the production monitoring process ensures that this issue can no longer occur from April 13, 2023 onwards. Recall Schedule : Description of Recall Schedule : Dealers will be notified of the pending voluntary recall campaign on August 11, 2023. Owners will be notified of the voluntary recall campaign on or before October 3, 2023. A copy of all communications will be provided when available. Planned Dealer Notification Date : AUG 11, 2023 – NR Planned Owner Notification Date : OCT 03, 2023 – NR * NR – Not Reported

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