Mercedes-Benz G-Class Service Bulletins

325 manufacturer communications on file.

• April 3, 2026•Document ID: 11031825

  Other
  STRUCTURE:BODY; EXTERIOR LIGHTING

  Mfr Comm. #:

  PSL- NCU Return Parts 4/3

  Date Added:

  May 1, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, April 23, 2026. After April 23rd, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.

  Associated Products (17)

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  Associated Documents

  • DownloadMC-11031825-0001.pdf↗
• March 27, 2026•Document ID: 11030303

  Other
  ENGINE; SERVICE BRAKES

  Mfr Comm. #:

  CL - EW M157

  Date Added:

  March 30, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage on the pressure transducer, vacuum pump, and vacuum lines in your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/ 150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership. On certain Model Year 2015 - 2019 CLS, E-Class, G-Class, GLE, GL, GLS, ML, SL and S-Class vehicles with the "M 157" 8-cylinder engine, over time, the pressure transducer and vacuum pump might not continue to work as intended and could result in illumination of the check engine Malfunction Indicator Lamp ('MIL') and the activation of limp-home mode. Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. •If your preferred authorized Mercedes-Benz dealership performs diagnosis and confirms that your vehicle meets the criteria for this extended warranty, the repair will be covered at no cost to you. •This extended warranty does not apply to any other components or conditions beyond the ones described under this extended warranty, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.

  Associated Products (33)

  2019 Mercedes-Benz E-Class2019 Mercedes-Benz G-Class2019 Mercedes-Benz GLE-Class2019 Mercedes-Benz GLS-Class2019 Mercedes-Benz S-Class2019 Mercedes-Benz SL-Class2018 Mercedes-Benz CLS-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz G-Class2018 Mercedes-Benz GLE-Class2018 Mercedes-Benz GLS-Class2018 Mercedes-Benz S-Class2018 Mercedes-Benz SL-Class2017 Mercedes-Benz CLS-Class2017 Mercedes-Benz G-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz GLS-Class2017 Mercedes-Benz S-Class2017 Mercedes-Benz SL-Class2016 Mercedes-Benz CLS-Class+ 13 more
  Associated Documents

  • DownloadMC-11030303-0001.pdf↗
• March 27, 2026•Document ID: 11030293

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI88.85-P-059178

  Date Added:

  March 28, 2026

  Manufacturer:

  MERCEDES BENZ

  Summary

  Complaint Wind noises/whistling noises from front area of roof or from area of instrument panel/windshield at high speeds Cause The airstream can excite the rubber strip of the windshield to whistle. Note: To troubleshoot, tape down the strip. Remedy Seal the lower lip of the rubber strip at the top of the windshield in the installed state across the entire width with window adhesive.

  Associated Products (8)

  2018 Mercedes-Benz G-Class2017 Mercedes-Benz G-Class2016 Mercedes-Benz G-Class2015 Mercedes-Benz G-Class2014 Mercedes-Benz G-Class2013 Mercedes-Benz G-Class2011 Mercedes-Benz G-Class2010 Mercedes-Benz G-Class
  Associated Documents

  • DownloadMC-11030293-0001.pdf↗
• March 25, 2026•Document ID: 11030301

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  LI00.01-P-078887

  Date Added:

  March 28, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference. Cause Information only Remedy Acronyms: • AV = Actual Values • CU = Control Unit • CUL = Control Unit Log • DTC = Diagnostic Trouble Code • E-Stand = Fresh-up head unit boot software (found in head unit control unit log) • FUP = Fresh-up • FW = Firmware • HSVL = High Speed Video Line • HU = Head Unit • HW = Hardware • IPD = Injector Performance Data • ISU = Initial Start Up • LVDS = Low Voltage Differential Signal • NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) • NSFT = Not Safe For Transport • MOPF = Model Facelift (Ex: 167 MOPF) • PiH = Plug-in Hybrid • P3 Hybrid = AMG Plug-in Hybrid with rear drive unit • SA Code = Sonderausstattungscode (Option Code) • SCN = Software Calibration Number • SW = Software • TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) • QT = Quicktest • XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. • Control Unit Name • Control Unit Number • Control Unit Short name • Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 • 117, 156, 246 (MFA) • 166, 176, 221, 242, 246, 292 • 906 Star 2 • 205, 213, 238, 253, 257, 290 (MRA) • 117, 156, 246 (MFA) • 118, 177, 243, 247 (MFA2) • 167, 222, 292, 463, 465 • 907 Star 3 • 294, 295, 296, 297 (EVA2) • 206, 214, 223, 236, 254 (MRA2) • 192 and 232 (MSA) Star 3.5 • 174 • 178 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": • 205 • 213 • 222 • 238 • 253 • 257 • 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": • 206 • 214 • 223 • 236 • 254 MFA = "Mercedes-Benz Frontwheel Architecture" • 117 • 156 • 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" • 118 • 177 • 243 • 247 EVA1.5 = "Electric Vehicle Architecture" • 243 EVA2 = "Electric Vehicle Architecture - Generation 2" • 294 • 295 • 296 • 297 MSA = "Mercedes-Benz Sport Architecture" • 192 • 232 MMA = "Mercedes-Benz Modular Architecture" • 174 • 178

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  Associated Documents

  • DownloadMC-11030301-0001.pdf↗
• March 14, 2026•Document ID: 11030069

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  EW - Vacuum Pump M157

  Date Added:

  March 14, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC is extending the warranty coverage on the pressure transducer, vacuum pump, and vacuum lines in certain Model Year (MY) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles, whichever occurs first. This extended warranty applies to the condition described below that may necessitate the repair or replacement of components related to the pressure transducer, vacuum pump, and vacuum lines. If the vacuum pump leaks, the oil could contaminate the pressure transducer and cause it to malfunction. This would result in inconsistent turbocharger pressure and cause a check engine malfunction indicator lamp (‘MIL’) to be illuminated and the vehicle could switch to limp-home mode.

  Associated Products (29)

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  Associated Documents

  • DownloadMC-11030069-0001.pdf↗
• March 13, 2026•Document ID: 11030304

  Warranty Program/Extension
  SERVICE BRAKES; ENGINE

  Mfr Comm. #:

  EW - Pressure Trans M157

  Date Added:

  March 30, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC is extending the warranty coverage on the pressure transducer, vacuum pump, and vacuum lines in certain Model Year (MY) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles, whichever occurs first. This extended warranty applies to the condition described below that may necessitate the repair or replacement of components related to the pressure transducer, vacuum pump, and vacuum lines. If the vacuum pump leaks, the oil could contaminate the pressure transducer and cause it to malfunction. This would result in inconsistent turbocharger pressure and cause a check engine malfunction indicator lamp (‘MIL’) to be illuminated and the vehicle could switch to limp-home mode.

  Associated Products (29)

  2020 Mercedes-Benz GLE-Class2019 Mercedes-Benz GLE-Class2019 Mercedes-Benz GLS-Class2019 Mercedes-Benz SL-Class2018 Mercedes-Benz CLS-Class2018 Mercedes-Benz G-Class2018 Mercedes-Benz GLE-Class2018 Mercedes-Benz GLS-Class2018 Mercedes-Benz SL-Class2017 Mercedes-Benz CLS-Class2017 Mercedes-Benz G-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz GLS-Class2017 Mercedes-Benz S-Class2017 Mercedes-Benz SL-Class2016 Mercedes-Benz CLS-Class2016 Mercedes-Benz E-Class2016 Mercedes-Benz G-Class2016 Mercedes-Benz GL-Class2016 Mercedes-Benz GLE-Class+ 9 more
  Associated Documents

  • DownloadMC-11030304-0001.pdf↗
• March 11, 2026•Document ID: 11030089

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078722

  Date Added:

  March 17, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The vehicle's position on the map is displayed far away from its actual position, e.g. the vehicle is displayed as being in the middle of the ocean. Note: No relevant DTC is displayed during the quick test. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the plug into the GNSS connection and ensure that the plug has engaged correctly.

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  Associated Documents

  • DownloadMC-11030089-0001.pdf↗
• March 11, 2026•Document ID: 11029977

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-079533

  Date Added:

  March 12, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message, warning message in the IC If the initial warning messages are ignored in the same ignition cycle, additional warning messages, e.g. red HV warning message and yellow HV drive system warning message may be shown. The DC/DC converter has stored a combination of the following two fault code groups: 1. P0C3B00, P0E9700, P0E5400, P0C4000. 2. P1D0B00, P1CA000, U011500. In some cases, not all DTCs from one of these groups are triggered. 243: As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. This triggers the yellow HV drive system warning message. In the ignition cycle in which the red 12 V fault message is displayed, the DC/DC converter does not support the 12 V on-board electrical system. This means the 12 V battery may be discharged in the event of longer use. Cause In individual ignition cycles, this may result in faulty wake-up behavior of the DC/DC converter. The DCDC DTCs and warning messages may appear with a time delay. When accessing the vehicle, the white (243/465) HV warning message is displayed. When the HV system is switched on (charging, 12V supports, precon, ignition on), the yellow HV drive system warning message is displayed on the 243 with BMS30EB02 (see below for details). When the vehicle is started/PT-ready (displayed in the IC), the red 12V battery warning message is displayed for 243 and 465. - This warning message indicates that the DC/DC was not properly initialized in the current cycle and the 12V on-board electrical system is not being supplied. Since the BMS on 243 uses the HV voltage value to check the auxiliary assembly fuse, the auxiliary assembly DTC can (with BMS30EB02) be stored as a consequence and the second (yellow) HV drive system warning message can be displayed in the IC. Remedy 243 EB330 (BMS30EB02): Update the DC/DC converter software to version A0019024327 + Erase fault memory. 465: Update the DC/DC converter software to version A0019024327 + Erase fault memory. !!! Important note: Problems relating to this topic must be invoiced on the damage code for the DC/DC converter 54720. !!

  Associated Products (5)

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  Associated Documents

  • DownloadMC-11029977-0001.pdf↗
• March 9, 2026•Document ID: 11030088

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-080132

  Date Added:

  March 17, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

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  Associated Documents

  • DownloadMC-11030088-0001.pdf↗
• March 9, 2026•Document ID: 11029959

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078301

  Date Added:

  March 11, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 1. Drive vehicle into workshop (temperature higher than +18 °C/+64.4 °F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in condensation, check the headlamp for malfunctions. (see Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Note: Only implement Remedy 1 for model series 463 (from model year 2018) and model series 465. Remedy 2 A defective headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness according to LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. • Open ventilation system LI82.10-P-078302 • Closed ventilation system LI82.10-P-078304

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  Associated Documents

  • DownloadMC-11029959-0001.pdf↗
• March 7, 2026•Document ID: 11029928

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.70-P-079903

  Date Added:

  March 10, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noise interference when using the hands-free system (phone call). Cause The noise is caused by electromagnetic interference (EMC fault) affecting the microphone lines and thus impacting voice quality. The severity of these faults may vary depending on the vehicle. Remedy To avoid EMC-related interference noise, the SOS microphone line is no longer routed through the rear-installed head unit (A26/17) but is instead routed directly from the new double microphone to the telematics control unit (N112/9). The work instruction for implementation is attached to this document and must be completed in full. Operation steps from the attachment: • Slide 6: De-pin pins 19 and 6 from plug A at the head unit (A26/17), insulate and strap down. These lines are no longer needed. • Slide 7: Replace the front left microphone with the double microphone (A213 820 2801) (AR82.70-P-8969XG). Info: The installation location of the double microphone is always at the front left. There is no difference here between the right-hand drive or left-hand drive versions. • Slide 9: Pin the double microphone wiring harness at connector X58/3X1 at pin 1 (white) and pin 14 (shield). • Slide 10: De-pin the Hermes wiring harness at connector X58/3X1 pin 1 (black line) and pin the white line in its place. Connect to pin 14 (brown line). Insulate the black line and tie it back. • Slide 15: De-pin and strap down the existing lines at connector 1 on the HERMES (N112/9) from pin 29 (brown), pin 30 (white), and pin 31 (black). • Slide 16: Insert the brown line of the new wiring harness at pin 29 and the white wire at pin 30. Connect the shield (black line) to pin 31. After completion, please document following FO text in VeDoc: "Conversion to double microphone (A213 820 28 01) carried out as per LI82.70-P-079903."

  Associated Products (1)

  2025 Mercedes-Benz G-Class
  Associated Documents

  • DownloadMC-11029928-0001.pdf↗
• March 4, 2026•Document ID: 11029927

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-073164

  Date Added:

  March 10, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state of charge (SOC) of the 12V primary battery drops below 45%. This message is displayed to safeguard the vehicle's starting ability. At the same time as the display appears in the instrument cluster, customers with a linked Mercedes me connect account also receive a push notification via the app/by email (if this function is activated). The battery must be charged to a state of charge (SOC) of at least 50%. To do this, an external charger can be connected (please comply with AR54.10-P-1133S) or the vehicle can be driven (by the customer) for 30 to 60 minutes. Please make customers aware of how the vehicle behaves: • If the vehicle is used for short journeys, the battery state of charge may slowly drop to less than 45% – a negative charge balance • A negative charge balance will also occur if the vehicle is used while stationary without running the engine, e.g. if the head unit is used, the ignition is switched on, or other comfort & convenience power consumers, e.g. seat heating/seat ventilation, are active. • An unlocked vehicle may increase consumption, because certain vehicle functions are actively kept ready for the customer. In combination with Keyless-Go or flush-mounted door handles, the vehicle may be woken up if the vehicle key is detected in the vicinity of the vehicle. The cause of the discharge can be identified with the aid of the onboard electrical system data in the EZS using XENTRY Diagnosis. See attached examples for identifying typical customer situations (e.g. operation with ignition on, operation of head unit while stationary or vehicle unlocked while parked). Vehicles with code B01+801: When charging while stationary, the 48V battery must have a state of charge (SOC) of 70% before the 12V primary battery, or the secondary battery in the case of code 503, can be charged. To ensure optimum battery care, please also comply with the existing Service Information documents regarding the handling of stock vehicles (SI54.10-P-0024A) and on remaining in transport mode (SI54.00-P-0004A) until immediately before handover to end customers. Special note: Do not replace any parts, if the message has occurred due to battery discharge as a result of the driving profile or the ignition being switched on (see attached examples); in such cases separate warranty and goodwill invoicing is not possible, as this is a normal on-board electrical system protection function. Likewise battery care and recharging do not qualify as a W&G case. Please advise customers accordingly regarding the above-mentioned issues relating to vehicle use.

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  Associated Documents

  • DownloadMC-11029927-0001.pdf↗
• March 2, 2026•Document ID: 11029925

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI54.21-P-080326

  Date Added:

  March 10, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer. There is software in development for this concern.

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  Associated Documents

  • DownloadMC-11029925-0001.pdf↗
• February 28, 2026•Document ID: 11029093

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-080132

  Date Added:

  February 28, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

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  Associated Documents

  • DownloadMC-11029093-0001.pdf↗
• February 28, 2026•Document ID: 11029055

  Emissions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  NCU - 2024100016

  Date Added:

  February 27, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2021 G-Class, S-Class and GT (463, 222 & 190 platforms) vehicles, the engine control unit software does not correspond to current production specifications. It is therefore possible that onboard diagnostics and/or exhaust gas emissions requirements may not be fulfilled. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will perform the ECU software update.

  Associated Products (9)

  2021 Mercedes-Benz AMG GT2021 Mercedes-Benz G-Class2021 Mercedes-Benz S-Class2020 Mercedes-Benz AMG GT2020 Mercedes-Benz G-Class2020 Mercedes-Benz S-Class2019 Mercedes-Benz AMG GT2019 Mercedes-Benz G-Class2019 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11029055-0001.pdf↗
• February 25, 2026•Document ID: 11029045

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI72.10-P-078836

  Date Added:

  February 26, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Wind noises from the area of the A-pillars on driver's and/or front passenger side. Cause Depending on the clamping force of the door joint seal on the A-pillar, air swirls may occur at high speeds which cause the seal to vibrate. The door adjustment and the flushness to the A-pillar increase this problem. Remedy To narrow down the cause: As shown in picture 1, mask off the door joint in the area of the A-pillar on the driver and passenger sides, then perform a test drive. If the wind noise can no longer be reproduced, replace the installed door joint seal with the optimized door joint seal. However, if wind noise is still audible, the affected door can be adjusted. To do this, proceed as follows: • Check the joint of the driver's and front passenger door all-round for gap dimensions and flushness to the adjacent paneling and, if necessary, adjust. The flushness can be adjusted using the hinges. The doors should tend to be further inwards than the A-pillar so that the airstream is conveyed past it. A tolerance of -2 mm is permissible and should be utilized. (see picture 2)

  Associated Products (1)

  2025 Mercedes-Benz G-Class
  Associated Documents

  • DownloadMC-11029045-0001.pdf↗
• February 24, 2026•Document ID: 11029024

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI77.20-P-073486

  Date Added:

  February 25, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Water ingress at the sliding sunroof can lead to moisture in the interior. In some cases, the leakage may also be visible to the customer in the area of the overhead control panel. Cause The following causes can lead to water ingress in the area of the sliding sunroof and thus to moisture in the vehicle interior: 1. Incorrectly routed drain hoses: Water may accumulate in the rear area of the sliding sunroof frame (see picture #1). For example, the rear drain hoses may have been routed without sufficient slope, which consequently leads to the drains overflowing. Water can enter the vehicle interior through the headliner. 2. Sliding sunroof adjustment: An improper positioning of the tilting/sliding roof within the roof frame may, under certain circumstances, lead to increased water ingress through the seal between the sliding sunroof frame and the roof. However, one drop is permissible here. 3. Material degradation: Over time, the seal of the tilting/sliding roof may experience age-related changes in its elasticity, which could potentially affect its watertightness. Remedy Test procedure for suspected water ingress via the sliding sunroof: • In all three possible cases, the headliner must be removed. • First, the complaint must be reviewed. A rain test should be performed for this purpose. If water enters through the sliding/tilting roof, compare the amount of water entering with the reference video in the appendix. Please note that due to its design, the sliding sunroof is not completely watertight. (see Video 3) • If the amount of water does not correspond to the expected normal condition, the three potential causes should be checked, insofar as they apply to the specific case. (see Video 2) Re. cause 1: • Route the left rear and right rear drain hoses of the sliding sunroof frame from the upper clip-on point to the lower clip-on point. • This must be carried out for both fastening points at the C-pillar and D-pillar. Carry out this step on both the left and right side of the vehicle. • Then move the water drain hoses of the roof luggage rack mounts from the lower clip-on point to the upper clipon point (see Pictures 2 and 3, Video 1). • Reinstall the roof lining. Re. cause 2: • Adjust the sliding sunroof frame position relative to the roof (height) in accordance with WIS document AR77.20- P-1100XG. Re. cause 3: • Replace the seal on the tilting/sliding roof (A2057800098). The vehicles affected are those with a production date up to 17.09.2025 and a chassis number up to W1N465.###.#X065180. If a vehicle still has a leakage in the sliding sunroof after this Clean point, please create a TIPS case.

  Associated Products (7)

  2025 Mercedes-Benz G-Class2024 Mercedes-Benz G-Class2023 Mercedes-Benz G-Class2022 Mercedes-Benz G-Class2021 Mercedes-Benz G-Class2020 Mercedes-Benz G-Class2019 Mercedes-Benz G-Class
  Associated Documents

  • DownloadMC-11029024-0001.pdf↗
• February 24, 2026•Document ID: 11028988

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI98.00-P-078306

  Date Added:

  February 24, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint After removing the transport protection from new vehicles, localized cloudy spots or streaks may appear on the paint surface. These marks are most commonly seen on the hood, fenders, and bumpers and are more noticeable on dark paint colors. Cause Moisture can become trapped under the full transport packaging. This moisture may penetrate the fresh paint, causing the paint layer to swell and result in visible white spots or streaks. Remedy Carefully heat the affected areas using a heat gun or Infrared Paint Curing Lamp. • Ensure that seals and other heat‑sensitive components, including those behind the heated area, are not exposed to excessive heat or damaged during the process. • Set the heat gun to 500–600 °C (932–1,112 °F). • Hold the heat gun approximately 5–10 cm (2–4 inches) from the surface. For plastic components (e.g., bumpers): DO NOT exceed 120 °C (248 °F). The heating process may need to be repeated several times to achieve the desired result. IF heating does not improve the appearance OR the paint structure is permanently damaged and cannot be repaired, the affected component must be repainted.

  Associated Products (8)

  2025 Mercedes-Benz G-Class2024 Mercedes-Benz G-Class2023 Mercedes-Benz G-Class2022 Mercedes-Benz G-Class2021 Mercedes-Benz G-Class2020 Mercedes-Benz G-Class2019 Mercedes-Benz G-Class2018 Mercedes-Benz G-Class
  Associated Documents

  • DownloadMC-11028988-0001.pdf↗
• February 20, 2026•Document ID: 11029134

  Other
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  CL - 2025040001

  Date Added:

  March 2, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has decided that on certain model year 2023 C-Class, G-Class and SL vehicles, the engine control unit software may not meet current specifications. Our records indicate that your vehicle is included in the affected population. What is the issue? The diagnosis routine for monitoring the engine’s air-fuel ratio might not be activated as intended and a malfunction in the oxygen sensor could be erroneously detected causing the check engine Malfunction Indicator Lamp (‘MIL’) to illuminate. What will your Mercedes-Benz Dealership do? An authorized Mercedes-Benz dealer will update the engine control unit software. This vehicle repair will be provided at no cost to you. While the repair time can be less than one hour, your dealer can provide you with a better estimate of the overall time for this visit. As a matter of normal service process, the 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. You will not be charged for other services or repairs unless so requested. Steps to take. • If you have not already had your vehicle repaired for this recall, find your nearest authorized Mercedes-Benz dealer at www.mbusa.com/recall to schedule your recall repair. • Please mention you are scheduling an appointment for Mercedes-Benz recall 2025040001 (CA DMV # 250401). • You may be asked for your VIN, which for your convenience is located at the top of this letter.

  Associated Products (3)

  2023 Mercedes-Benz C-Class2023 Mercedes-Benz G-Class2023 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11029134-0001.pdf↗
• February 14, 2026•Document ID: 11028815

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-079533

  Date Added:

  February 14, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message, warning message in the IC If the initial warning messages are ignored in the same ignition cycle, additional warning messages, e.g. red HV warning message and yellow HV drive system warning message may be shown. The DC/DC converter has stored a combination of the following two fault code groups: 1. P0C3B00, P0E9700, P0E5400, P0C4000. 2. P1D0B00, P1CA000, U011500. In some cases, not all DTCs from one of these groups are triggered. 243: As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. This triggers the yellow HV drive system warning message. In the ignition cycle in which the red 12 V fault message is displayed, the DC/DC converter does not support the 12 V on-board electrical system. This means the 12 V battery may be discharged in the event of longer use. Cause In individual ignition cycles, this may result in faulty wake-up behavior of the DC/DC converter. The DCDC DTCs and warning messages may appear with a time delay. When accessing the vehicle, the white (243/465) HV warning message is displayed. When the HV system is switched on (charging, 12V supports, precon, ignition on), the yellow HV drive system warning message is displayed on the 243 with BMS30EB02 (see below for details). When the vehicle is started/PT-ready (displayed in the IC), the red 12V battery warning message is displayed for 243 and 465. - This warning message indicates that the DC/DC was not properly initialized in the current cycle and the 12V on-board electrical system is not being supplied. Since the BMS on 243 uses the HV voltage value to check the auxiliary assembly fuse, the auxiliary assembly DTC can (with BMS30EB02) be stored as a consequence and the second (yellow) HV drive system warning message can be displayed in the IC. Remedy 243 EB330 (BMS30EB02): Update the DC/DC converter software to version A0019024327 465: Perform reset of the DC/DC converter, e.g. through a BUS idle or by clearing the fault memory, to exit the faulty state. Update the DC/DC converter software to the latest version. !!! Important note: Problems relating to this topic must be invoiced on the damage code for the DC/DC converter 54720. !!!

  Associated Products (5)

  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11028815-0001.pdf↗