Mercedes-Benz SL-Class Service Bulletins

418 manufacturer communications on file.

• January 6, 2026•Document ID: 11027120

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI20.10-P-072886

  Date Added:

  January 6, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or performance and is not a safety concern. The vehicle remains safe to operate with this code, but the measures listed in the "Remedy" section are recommended. Remedy 1. Use VMI to check for Emission Extended Warranty – Engine Thermostat (incl. software update) MY19-23, Various Models and Platforms (167, 190, 205, 213, 217, 222, 223, 232, 253, 290, 463) 2. If the vehicle is covered under the Emission Extended Warranty, Please perform steps outlined in the NCU for repairs. 3. If vehicle does not fall into the covered area of the Extended Warranty please proceed with "Remedy Instructions" in attachments. Due to formatting issues please see "remedy instructions" in attachments

  Associated Products (65)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz G-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class+ 45 more
  Associated Documents

  • DownloadMC-11027120-0001.pdf↗
• December 20, 2025•Document ID: 11026833

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.35-P-080160

  Date Added:

  December 24, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS) when the vehicle is stationary and ECO Start/Stop is active (combustion engine is off). The noise is more noticeable outside the vehicle and in acoustically shielded areas such as closed rooms or garages. Cause The noise in the valve body (EHS) is caused by superimposed pressure peaks acting on the valves. This phenomenon occurs only after a certain running-in period due to the influence of micro-contamination in the valve bores. Remedy A hardware modification of the electro-hydraulic control unit (EHS) is currently being implemented (no change to the part number). This will be incorporated into series production and as a spare part starting from 12/2025. This is only a comfort-related complaint and has no impact on the functionality or service life of the transmission. For sensitive customers, the following measures can be performed: 1. Replace the electro-hydraulic control unit (EHS), the oil pan, and the transmission fluid. - Ensure all oil guide pipes are installed in the new valve body to prevent a new concern after replacement. (See attached location guide)

  Associated Products (104)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz C-Class2026 Mercedes-Benz E-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLE-Class2026 Mercedes-Benz GLS-Class2026 Mercedes-Benz SL-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz G-Class+ 84 more
  Associated Documents

  • DownloadMC-11026833-0001.pdf↗
• December 15, 2025•Document ID: 11026609

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI01.00-P-078172

  Date Added:

  December 15, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Dull thumping noise or ticking noise under the vehicle in the area of the engine/two-mass flywheel/transmission. Is significantly perceptible at the front right wheel well and can also be faintly heard in the vehicle interior. Cause The ticking noise occurs in idle operation in drive program C & S at 780 rpm when the state of charge of the battery is over 65% and the load requirement at the belt-driven starter alternator is simultaneously over 25 Nm. The load requirement can occur due to a number of auxiliary consumers (e.g. air conditioning system, steering wheel or seat heating, etc.). Remedy Do not replace any parts Check whether a software update for N127 (PTCU) and N15/15 (transmission) is available. If no software update is available, then the vehicle has the latest SW and the vehicle should be released.

  Associated Products (8)

  2025 Mercedes-Benz C-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11026609-0001.pdf↗
• December 11, 2025•Document ID: 11026608

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.71-P-079104

  Date Added:

  December 15, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit. • Flashing between US speed limit symbol and European speed limit symbol. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy No TIPS case is necessary. Do not replace parts. A new software for the head unit is scheduled for tentative release in Q4 2025 to early Q1 2026 to rectify concern.

  Associated Products (39)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLS-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class+ 19 more
  Associated Documents

  • DownloadMC-11026608-0001.pdf↗
• December 11, 2025•Document ID: 11026611

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-080132

  Date Added:

  December 15, 2025

  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.

  Associated Products (116)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLS-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class+ 96 more
  Associated Documents

  • DownloadMC-11026611-0001.pdf↗
• December 3, 2025•Document ID: 11026127

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-080094

  Date Added:

  December 4, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Displayed Message: “Driver camera not functioning, see Operator’s Manual” Cause Interior temperature too high due to: • Summer heat • Direct sunlight • Lack of air conditioning or ventilation Camera enters self-protection mode to prevent overheating. Remedy Do NOT replace any parts. The driver camera (NTG7: MDC295; CIVIC.i2: CIVIC206) is operating as designed. Allow the interior to cool down. If the message remains after cooling: • Run XENTRY Diagnosis • Check latest software for Actuation of Driver Camera (A26/17) No TIPS case required.

  Associated Products (54)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class+ 34 more
  Associated Documents

  • DownloadMC-11026127-0001.pdf↗
• December 3, 2025•Document ID: 11026117

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-080053

  Date Added:

  December 4, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Discharge of 12 V battery in the event of a longer non-operational time - model series 232 and model series 192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): • Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) • After installing the updates: measure the quiescent current again • If the quiescent current is < 50 mA, the vehicle is OK • If the quiescent current is between 50 and 100 mA, continue with step 5 • If the quiescent current is between 100 and 200 mA, continue with step 3 • If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: • Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. • Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side • Document the quiescent current value • If there is no change: Disconnect the door separation point on the front passenger side and note down the value again • If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced • If the quiescent current remains low after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being • If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: • Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering • Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. • Wait until the vehicle has gone to sleep • Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value • Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) • If pulling out the fuse reduces the quiescent current to below 50 mA, replace the corresponding control unit. After replacing, please measure and assess the quiescent current again • Please create a TIPS case for information purposes • If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: • Create a TIPS case • Document all the completed steps and measurement results • Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. • Attach the latest N73 and N73/3*1 CUL's • If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

  Associated Products (8)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz AMG GT2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz SL-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11026117-0001.pdf↗
• December 3, 2025•Document ID: 11026030

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-080053

  Date Added:

  December 3, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Discharge of 12 V battery in the event of a longer non-operational time - model series 232 and model series 192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): • Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) • After installing the updates: measure the quiescent current again • If the quiescent current is < 50 mA, the vehicle is OK • If the quiescent current is between 50 and 100 mA, continue with step 5 • If the quiescent current is between 100 and 200 mA, continue with step 3 • If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: • Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. • Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side • Document the quiescent current value • If there is no change: Disconnect the door separation point on the front passenger side and note down the value again • If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced • If the quiescent current remains low after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being • If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: • Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering • Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. • Wait until the vehicle has gone to sleep • Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value • Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) • If pulling out the fuse reduces the quiescent current to below 50 mA, it must be replaced. After replacing the fuse, please measure and assess the quiescent current again • Please create a TIPS case for information purposes • If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: • Create a TIPS case • Document all the completed steps and measurement results • Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. • Attach the latest N73 and N73/3*1 CUL's • If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

  Associated Products (7)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz AMG GT2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz SL-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11026030-0001.pdf↗
• November 14, 2025•Document ID: 11025543

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 25P5497846

  Date Added:

  November 14, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the electronic ignition switch (“EIS”) control unit does not correspond to current production specifications. This OTA software update for the 12-V EIS will improve battery management and enhance the robustness of the vehicle’s electrical system. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

  Associated Products (3)

  2025 Mercedes-Benz SL-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11025543-0001.pdf↗
• November 10, 2025•Document ID: 11025471

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.35-P-079971

  Date Added:

  November 11, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in the EEPROM or Transmission Health system following the replacement of the below components: - The electrohydraulic control unit (EHS valve body) in transmission 725.0/725.1 - The repair kit for the control unit (VGS) in transmission 725.0 Cause Missing, incorrectly installed, or damaged guide tubes on the EHS valve body. Remedy Check for the correct installation of the guide tubes (refer to attachments under “Cause”), correct installation if necessary. Parts Catalog References: NAG3M 725.1 AND NAG3C 725.0 (AMG only): Part numbers 100, 120, 150, 160 NAG3C 725.0 (Non AMG): Part numbers 280, 290, 330, 340 NOTE: If any of these guide tubes are not installed and the vehicle is driven, it will create several rinse and slipping events in the EEPROM data. These values caused by incorrect installation need to be erased to prevent future misdiagnosis. Submit a TIPS case to the Powertrain inbox with the following to receive the necessary reset password: - Initial Quick Test w/ Freeze frame data - VGS Control Unit Log - IPR Result - Initial EEPROM data (before repairs) - Latest EEPROM data - Photo of oil level ultrasonic measurement next to XENTRY specifications Please provide detail regarding the reasoning for the initial replacement in your workshop findings and measures performed. (This topic was covered in the July 2022 and July 2024 Passenger Car Tech Topics)

  Associated Products (94)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz G-Class+ 74 more
  Associated Documents

  • DownloadMC-11025471-0001.pdf↗
• November 3, 2025•Document ID: 11025100

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.10-P-075869

  Date Added:

  November 6, 2025

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load, vibrations or jolting sensation may come from the drivetrain. It may be mistaken for a harsh shift. Cause Modified oil quality of the transfer case over time Remedy 1. Check initial quick test for faults in the following control units. N45 or N15/7 - All-wheel drive (ARS) N127 - 'Drivetrain' (PTCU) control unit Y3/8 - Transmission control for 9-gear transmission (VGS) N3/10 - Engine electronics for combustion engine If faults are present: Process them as per the guided test in Xentry. If no faults are present: 2. Check the transmission oil level If the oil level is correct: 3. Unplug the connector for the transfer cases control unit and reassess the vehicle on a subsequent test drive If the complaint no longer occurs with the control unit disconnected: 4. Perform an oil change of the transfer case according to WIS specifications - Collect an oil sample of the original fluid 5. Complete all transfer case Tech-in processes located under VG Control Unit > Adaptations - Resetting the oil service data - Calibration of N15/7 5. Perform road test of vehicle to bring transmission to operating temperature ( >60C ) 6. Operate vehicle in full circle with steering at full lock - 5x to the left - 5x to the right 7. Perform an extended 200mi road test to ensure the clutches are properly conditioned with the new oil. 8. Reassess the concern and release the vehicle if no longer present. If the concern continues to occur with the control unit disconnected or after the above steps have been performed, please submit a TIPS case to the Powertrain inbox with the following information: - Initial quick test with fault freeze frame data - Initial transmission EEPROM data - VGS and Transfer Case Control Unit Log (N45 or N15/7) - Photo of the original oil condition - What color was the fluid drained from the transfer case before the oil change? - Was an oil sample collected, and can you provide a photo of the original fluid? - What color and part number fluid was used during the oil change? - How far was the vehicle driven after?

  Associated Products (103)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz GLC-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class+ 83 more
  Associated Documents

  • DownloadMC-11025100-0001.pdf↗
• October 14, 2025•Document ID: 11024358

  Service Bulletin/Repair Instructions
  WHEELS; SUSPENSION

  Mfr Comm. #:

  LI40.10-P-059248

  Date Added:

  October 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Crackling and cracking noise from the outer wheel on the front axle when cornering Cause The noise is generated by a micromovement on the contact surface between the rim and the brake disk (wheel bolt group) and may be intensified by potential soiling. The more lightweight rim (AMG forged rim) transmits the noise louder; in the case of cast rims, the noise is generally not perceptible. This is not a technical defect, but rather a complaint concerning comfort. Safe operation of the vehicle is ensured at all times. Remedy Important note: The operations described below do not represent a permanent remedy in every case. The noise may reoccur again after an indefinite period of time; sanding the rims with abrasive media multiple times is not permissible. Only cleaning using the Hazet tool 4960-160 (recommendation) can be performed without any concerns each time the wheel is changed or if the complaint reoccurs. Replacing the parts (rim, wheel bolts, wheel bearings, wheel hub, brake disk) is not expedient in the event of this complaint. Clean the components of the wheel bolt connection according to the WIS instructions Sand down the rim and brake disk bowl by performing the following steps: • Manually sand rim (old design only) in area of water drain bores (Figure 1; item A), approx. 1.5 cm left and right of water drain bore (Figure 2) Note: Use abrasive paper with grit size 80. The grooving in this area should no longer be visible (sand down approx. 0.1-0.2mm) • Also sand brake disk bowl using emery cloth or abrasive paper with a grain size of 120 • For vehicles equipped with the AMG ceramic brake system (B07), abrasive paper may not be used for cleaning on the brake disk side Note: Do not use any cleaning agent when cleaning on the rim side. Cleaning using abrasive paper with a grain size of 80 will suffice. Do not apply any grease, lubricant or paste after cleaning The brake disk bowl should be "bare metal" in the area of the imprints made by the hole (Figure 3)

  Associated Products (55)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class+ 35 more
  Associated Documents

  • DownloadMC-11024358-0001.pdf↗
• September 26, 2025•Document ID: 11023364

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  NCU - 2025090010

  Date Added:

  September 26, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the Electronic Ignition Lock control unit coding does not correspond to current series production configuration. As a result, battery management could be affected and cause low battery voltage. A 12V battery message may appear in the instrument cluster after the vehicle has been dormant for an extended period of time. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will SCN code the Electronic Ignition Lock control unit. The new SCN coding improves battery management, improving the efficiency of the 12V electrical system.

  Associated Products (7)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz AMG GT2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz SL-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11023364-0001.pdf↗
• September 25, 2025•Document ID: 11023347

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-071499

  Date Added:

  September 25, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The result from the XENTRY battery test does not match the current state of the battery. Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM or EZS cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy 1) If the battery is discharged, charge the battery. Review WS54.00-P-0037B for minimum charger specifications. • Note the amperage difference between trickle (maintainer) chargers of at least 16A and quick chargers of at least 30A. • Review AP54.10-P-5449U. Note when battery is sufficiently charged the charger current is less 5A. 2) While charging the battery, analyze the vehicle data to determine root cause of discharge using the following data points: • NOTE: For guidance on use of the on-board electrical data please review the AKUBIS video titled "New onboard electrical system diagnosis shown on BR 166". The video can be accessed through WIS by following the path WSM--> content by model series --> passenger cars --> ML-Class --> Model 166 --> group 54 --> New onboard electrical system diagnosis. • Refer to the March 2023 PCTT for the video walkthrough of analysis as well as the attachment of the slides to this Li. • Review GF54.10-P-1012A regarding what can cause deep discharge protection to not end a battery draw. • Review SI54.10-P-0024A for proper maintenance of the vehicle. For Star 2 vehicles: -Review FSAM on-board electrical data conspicuous records • NOTE: This data can be found via FSAM N10/6 -> Actual Values -> On-board electrical system -> On-board electrical system data For Star 3 vehicles: -Review N73/3 EZS on-board electrical data conspicuous records • NOTE: This data can be found via EZS N73/3 -> Actual Values -> On-board electrical system -> On-board electrical system data 3) Determine if root cause is due to: • vehicle technical issue? • customer behavior? NOTE: Recommend using battery analysis sheet found in XiW -> Local Contents -> Diagnostic info -> Battery Discharge Worksheet 4) If battery still does not accept charge AND the vehicle does not fall within the parameters of improper maintenance, then create a TIPS case. *IMPORTANT* - If the improper maintenance/use is found during diagnosis, DO NOT open a TIPS case. If a TIPS case is opened, it will be marked 1 star and directed to your assigned FSE for review. TIPS Case must include with the case: • Amperage setting of charger and time battery was on charger • XENTRY Battery Tester results • Voltage of battery taken with multimeter: Do not connect charger while taking measurements • N10/6 FSAM, (N73 or N73/3) and (N73*1 or N73/3*1) • Workshop analysis of conspicuous data • Root cause analysis for battery discharge based on the above documents (technical, customer, etc.) • NOTE: For expedited results when creating a case write customer complaint as "XENTRY Battery Tester implausible".

  Associated Products (114)

  2026 Mercedes-Benz AMG GT2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz GLC-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE+ 94 more
  Associated Documents

  • DownloadMC-11023347-0001.pdf↗
• September 17, 2025•Document ID: 11023193

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.19-P-072588

  Date Added:

  September 18, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy For vehicles with 722.9 transmission: Ensure LI54.15-P-057373 is performed before replacing any component parts. After processing and complying with the above document(s): 1. Perform an ignition reset on Y3/8n4 (VGS) 2. Inspect transmission connector for loose connections, damaged wiring or pins and any other concerns If communication with the VGS cannot be established, the complete valve body ('electrohydraulic controller unit (EHS)') must be replaced. Installation of a VGS repair kit is not permitted in this case as it is not possible to transfer the necessary valve characteristics without communication with the original control unit.

  Associated Products (143)

  2026 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class+ 123 more
  Associated Documents

  • DownloadMC-11023193-0001.pdf↗
• September 16, 2025•Document ID: 11023192

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI00.00-P-079603

  Date Added:

  September 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The OTA software update prepares the SRS/ORC controller and enables it to be updated remotely in the future. Based on technician feedback, the OTA (code: 25P5496529) does not start even after an extended period of time and several driving cycles. In addition, the "Continue" button is grayed out. Cause The exact cause for the OTA not to start is currently under analysis. Remedy Please check whether the vehicle is affected by the field measure "Update software of Supplemental Restraint System (SRS) control unit" (code: 25P5496529) and if yes, perform this update using a XENTRY with all latest Add-Ons and bill under accounting number 5496529. If the vehicle is not affected by this field measure, in the event of a complaint update control unit ORC223 (N2/5 -Supplemental Restraint System SRS) using XENTRY and use damage code 8251M01. As of XENTRY Release Version 06/25, control unit ORC223 can also be updated in this context without a password. Provided control unit ORC223 is error-free after the update, the vehicle can be handed back. ***IMPORTANT*** -In isolated cases, the OTA update may continue to be displayed for up to 3-4 weeks even after flashing with XENTRY. Note: This LI applies only to the OTA update for occupant protection!

  Associated Products (8)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11023192-0001.pdf↗
• September 13, 2025•Document ID: 11023107

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  NCU - 2025080007

  Date Added:

  September 12, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the High Voltage Battery (“HVB”) AC charger software does not correspond to current production specifications. As a consequence, a HVB MIL may illuminate during charging due to fluctuations in power consumption of the charging socket actuator. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the HVB AC Charger Software.

  Associated Products (22)

  2025 Mercedes-Benz C-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz AMG GT2021 Mercedes-Benz S-Class+ 2 more
  Associated Documents

  • DownloadMC-11023107-0001.pdf↗
• September 8, 2025•Document ID: 11023033

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI00.00-P-079603

  Date Added:

  September 9, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The OTA software update prepares the SRS/ORC controller and enables it to be updated remotely in the future. Based on technician feedback, the OTA (code: 25P5496529) does not start even after an extended period of time and several driving cycles. In addition, the "Continue" button is grayed out. Cause The exact cause for the OTA not to start is currently under analysis. Remedy Please check whether the vehicle is affected by the field measure "Update software of Supplemental Restraint System (SRS) control unit" (code: 25P5496529) and if yes, perform this update using a XENTRY with all latest Add-Ons and bill under accounting number 5496529. If the vehicle is not affected by this field measure, in the event of a complaint update control unit ORC223 using XENTRY and use damage code 8251M01. As of XENTRY Release Version 06/25, control unit ORC223 can also be updated in this context without a password. Provided control unit ORC223 is error-free after the update, the vehicle can be handed back. ***IMPORTANT*** -In isolated cases, the OTA update may continue to be displayed for up to 3-4 weeks even after flashing with XENTRY. Note: This LI applies only to the OTA update for occupant protection!

  Associated Products (12)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz S-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz GLC-Class
  Associated Documents

  • DownloadMC-11023033-0001.pdf↗
• September 5, 2025•Document ID: 11022819

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 20250905

  Date Added:

  September 5, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, there is a new software release for the MBUX Infotainment system. An OTA update will enhance both functionality and entertainment features. The update introduces Dolby Atmos support for in-car apps, improvements to the MBUX calendar app, and the launch of MBUX SOUND DRIVE. To deliver a better music streaming experience, new apps will be installed and existing integrations with online streaming providers will be removed. Each provider will now require a separate app, which will be installed during the update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

  Associated Products (11)

  2026 Mercedes-Benz GLC-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11022819-0001.pdf↗
• September 3, 2025•Document ID: 11022910

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI61.20-P-077105

  Date Added:

  September 8, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Cracking/clicking noise from underbody when driving slowly (around curves); see attachment. Cause Potential causes: • Assembly of the underfloor paneling with unloaded body (results in tension after compression of vehicle in K0- design level) • Relative movement between front and rear engine compartment lining • Torque loss of the screw connection • Accumulation of stones and dirt Remedy Changes Made: • Screw connection in K0-design level (vehicle compressed - on ground at ride height) and taking into account the correct screw sequence • Additional screw connection points (minimization of relative movement) • Use of rivet nuts and screws with a larger diameter • Integration of spacer rings (reduction of accumulation of stones and dirt) Note: In order to rule out that other component parts may be responsible for the noise, remove the underfloor paneling first. If the noise complaint is NOT present after removal, proceed with underfloor paneling rework. Underfloor paneling rework 1. Order after-sales kit with item number A2326207003 for the rework. 2. After receiving the after-sales kit (A2326207003), check the contents: 22 screws (A0109902604) / 14 rivet nuts (A0009902349) / 4 spacer washers (A2326207203). If the content is complete, start rework in the next step. 3. Disassemble underfloor paneling. If front and rear engine compartment lining are bonded to one another, order new parts (A2326201101, A2326268900). 4. Clean underfloor paneling and integral carrier. Failure to clean the parts can lead to noise once re-assembled. 5. Mark four additional screw connection points on the front engine compartment lining (see attachment 1). See appendix 2 for dimensions. 6. Drill holes with d=9 mm on the markings. 7. Screw front and rear engine compartment lining together using the screw connection points already available (see attachment 3). Both linings are therefore aligned to one another. Important: Pay attention to alignment of the elongated holes on the external edges. 8. Drill into the rear engine compartment lining using the four additional holes with d=9 mm (see attachment 4). 9. Disassemble front and rear engine compartment lining. 10. Drill out three existing rivet nuts with d=9 mm (see attachment 5). 11. Insert seven new rivet nuts (A0009902349) (see attachment 6). 12. Drill out seven existing rivet nuts in the integral carrier with d=9 mm (see attachment 7). Caution: Do not damage integral carrier. 13. Remove remaining rivets that have fallen off from the integral carrier using a magnetic tube (see attachment 8). 14. Insert new rivet nuts (A0009902349) in the integral carrier (see attachment 9). 15. Fix four spacer rings (A2326207203) in place using bonding points between underfloor paneling and integral carrier (for position, see attachment 10 and attachment 11). Caution: No adhesive can be applied to the contact areas (risk of torque loss). 16. Install underfloor paneling on vehicle with 14 Nm (observe screw sequence in attachment 12). Important: Use screw item number A0109902604. If there are any issues or concerns, please open a TIPS case and send to the Body/Chassis/Entertainment inbox.

  Associated Products (4)

  2024 Mercedes-Benz AMG GT2024 Mercedes-Benz SL-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11022910-0001.pdf↗