Mercedes-Benz C-Class Service Bulletins

930 manufacturer communications on file.

• April 17, 2025•Document ID: 11017220

  Service Campaign
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  NCU - 2025040004

  Date Added:

  April 24, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software may not correspond with current production specifications. There is a possibility that the dynamic driving profile may not be accurately calculated, which could possibly lead to an unsuccessful diagnostic routine for the lambda sensors. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software.

  Associated Products (4)

  2024 Mercedes-Benz C-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11017220-0001.pdf↗
• April 17, 2025•Document ID: 11017078

  Service Campaign
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  NCU - 2025040003

  Date Added:

  April 16, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software does not correspond to current production specifications. The diagnosis routine for the pressure sensor in the crankcase ventilation system may be populated with incorrect data. As a consequence, the check engine light may illuminate after the engine is switched off even though there is no functional impairment. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software.

  Associated Products (4)

  2024 Mercedes-Benz C-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11017078-0001.pdf↗
• April 15, 2025•Document ID: 11017224

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI01.20-P-076894

  Date Added:

  April 24, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction Cause The partial-load ventilation valve (a part of the intake line assembly) may not work as intended. Remedy **Important** Replacement of the engine wiring harness or control unit is not needed if oil is found at the electrical connection of the crankcase ventilation valve or control unit. Replacement is only allowed if other symptoms or faults are present. Perform either remedy A or remedy B depending on the model Remedy A: SLK/SLC300, C350e hybrid, and GLC350e hybrid Perform guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. Software is not planned for models SLK/SLC300, C350e, and GLC350e. Remedy B: All other vehicles- (Replacement of intake line assembly is not required.) 1- Perform software update for N3/10 Engine control unit. 2- Remove upper engine cover. 3- Unclip ME-SFI control unit (N3/10) with bracket and place to one side with connected lines (see AR07.08-P-7013MRD). 4- Release and disconnect electrical connector (4) of partial-load operation crankcase ventilation valve (Y58/2). 5- Fit cap A094 545 50 03 on electrical connector (4) of engine wiring harness partial load operation crankcase ventilation valve (Y58/2) and ensure correct seating on plug of electrical connector (4). 6- Strap down electrical line (4) of partial load operation crankcase ventilation system valve (Y58/2) at wiring harness. Ensure that electrical line (4) is routed free of tension. 7- Clip in ME-SFI[ ME] control unit (N3/10) with bracket, ensure control unit is correctly seated at attachment points. New software part numbers: 2015-2017 C300 w/722.9 transmission- 2749021202 2749031506 2016-2018 C300 and GLC300 w/725 transmission- 2749021802 2749031806 2019 GLC300- 2749020802 2749031306 2017-2018 E300- 2749021902 2749031906 2019 E300- 2749020702 2749031206 This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty – Intake Line Assembly".

  Associated Products (14)

  2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz C-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz SLK-Class
  Associated Documents

  • DownloadMC-11017224-0001.pdf↗
• April 11, 2025•Document ID: 11017516

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; STEERING

  Mfr Comm. #:

  LI46.10-P-078012

  Date Added:

  May 2, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Test: Please flash the IDC (N62/4) software A223 902 75 37 (only applies to HOSWD223). Erase fault memory Reset the HOSWD control unit in line with the guided test in Xentry. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Switch on ignition without touching the steering wheel. If after 10 seconds without touching the steering wheel, one of the two fault messages appears in the IC: Please check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace steering wheel electronics or feed lines. If there is no visible damage -> replace steering wheel rim. If no yellow message appears in the instrument cluster within 10 seconds: Please grab the steering wheel all the way round, including the 6 o'clock chrome molding, with both hands (see picture 1). If the fault is triggered by grabbing the steering wheel rim or pressing on the 6 o'clock clasp, check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). If there is visible damage -> replace steering wheel electronics or feed lines. If no defect is visible: Please do not replace the steering wheel, but wait for new coding parameters which should be available 05/2025. Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case. Fault in IDC213 control unit: U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the HOSWD control unit then scan the steering wheel and check whether the fault is reproducible. If reproducible: Create a TIPS case, adding the

  Associated Products (60)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz SL-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class+ 40 more
  Associated Documents

  • DownloadMC-11017516-0001.pdf↗
• April 7, 2025•Document ID: 11017037

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.71-P-079104

  Date Added:

  April 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 Under Investigation Remedy Under investigation. One option is to turn off Traffic Sign Assist until the investigation is completed. Once completed this LI will be updated. No TIPS case is necessary. Do not replace parts.

  Associated Products (39)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-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-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class+ 19 more
  Associated Documents

  • DownloadMC-11017037-0001.pdf↗
• April 7, 2025•Document ID: 11017229

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  LI42.10-P-063502

  Date Added:

  April 25, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noises/ squealing from the service brake in various driving situations and ambient conditions. Cause Frictional vibrations Remedy AMG brake systems are designed for high loads. This can result in noises under certain operating conditions and driving styles. Please refer to the Operator's Manual for further information such as care and maintenance instructions (washing vehicle directly after heavy use and using approved cleaning agents). These are dependent on speed, brake pressure or ambient conditions such as temperature and air humidity. 1. Beginning Diagnostics: a) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). b) Check the affected system for component wear, mechanical damage or localized overheating damage. Replace damaged components as necessary. c) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). d) Clean brake components free of brake dust and debris. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Check whether, apart from this document, an additional document exists for the specific model in question, and if so, work through it and then continue. 2. Specific Axle Work: NOTE: If the brake pad has a metal backing plate, there is no need to affix the adhesive film. a) If the noises are coming from the front axle => Affix linings with adhesive film (see attachments for front axle). If backing plate is installed on pads, move to step 3. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining where the piston contacts the pad backing plate. See picture "Adhesive and Paste Application Area". 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". 5. Apply heat-resistant lubricating paste to the sides of the backing plate. See picture "Adhesive and Paste Application Area". 6. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle => Affix linings with adhesive film and grease the lining as per the specification (see attachments for rear axle). 1. Remove brake pads of rear axle. 2. Cleaning all contact points on brake lining and brake caliper/carrier. 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste. 4. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 5. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) If the vehicle is an AMG P3 Hybrid, switch off recouperation prior to bedding in brakes. d) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake applications. e) Finally drive approx. 3 miles to allow the system to cool. f) Reassess noise.

  Associated Products (166)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz E-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-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 GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT+ 146 more
  Associated Documents

  • DownloadMC-11017229-0001.pdf↗
• April 1, 2025•Document ID: 11017039

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI83.20-P-051802

  Date Added:

  April 15, 2025

  Manufacturer:

  MERCEDES BENZ

  Summary

  Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant flow in the heater heat exchanger (see picture). Remedy With the aforementioned complaint, make sure that the cooling circuit is inspected for silicate residues after all standard tests are completed. The silicate residues tend to accumulate upstream of the shutoff valve for the heater hot water pulsed valve. If there are silicate residues in the coolant, the engine must be flushed thoroughly. To make sure that all silicate residues are removed from the cooling circuit, the following parts must also be replaced (cleaning of these components is not sufficient): Coolant expansion reservoir, radiator, oil/water heat exchanger (oil cooler), heater valve, heat exchanger of heater, coolant and, if installed, the electric water pump for the residual heat utilization system. Determine the parts for the respective vehicle in the EPC.

  Associated Products (80)

  2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz GLE-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz GLE-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz SLC-Class2017 Mercedes-Benz SLK-Class2016 Mercedes-Benz CLS-Class2016 Mercedes-Benz E-Class2016 Mercedes-Benz GLE-Class2016 Mercedes-Benz SLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class2015 Mercedes-Benz CLS-Class2015 Mercedes-Benz E-Class2015 Mercedes-Benz ML-Class2015 Mercedes-Benz SLK-Class2014 Mercedes-Benz C-Class+ 60 more
  Associated Documents

  • DownloadMC-11017039-0001.pdf↗
• March 28, 2025•Document ID: 11016153

  Service Campaign
  ELECTRICAL SYSTEM; POWER TRAIN

  Mfr Comm. #:

  NCU - 2025030013

  Date Added:

  April 1, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the powertrain control unit software does not correspond to current production specifications. Consequently, there is a risk that the 48V battery may not charge due to an implausible state-of-charge in the powertrain control unit. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the powertrain control unit software.

  Associated Products (2)

  2023 Mercedes-Benz C-Class2023 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11016153-0001.pdf↗
• March 24, 2025•Document ID: 11016043

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.35-P-079039

  Date Added:

  March 27, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint A clicking/ticking/taping noise from underneath the vehicle with engine off during ECO stop event or after parking See video for example Cause Noise originates within the transmission valvebody Remedy Take a video from underneath vehicle recording the noise Pull EEPROM data, Inital Quick Test, and Control Unit Log Please open a TIPs case providing all data to assess next steps.

  Associated Products (90)

  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz GLE-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-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class+ 70 more
  Associated Documents

  • DownloadMC-11016043-0001.pdf↗
• March 21, 2025•Document ID: 11016038

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 5496236

  Date Added:

  March 27, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the software for the airbag control unit does not correspond to the latest series production configuration. The airbag control unit will be updated to improve the vehicle charging functionality during future OTA updates. 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 (9)

  2024 Mercedes-Benz C-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11016038-0001.pdf↗
• March 13, 2025•Document ID: 11015626

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; POWER TRAIN

  Mfr Comm. #:

  LI47.70-P-078563

  Date Added:

  March 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint - Engine diagnosis indicator lamp (MIL) lights up. - Current and saved fault code in DCCU and powertrain control unit (PTCU): P2E9873 The position sensor of the external socket flap of the vehicle socket (direct current) indicates an electrical fault. The actuator does not open. - The vehicle starts or charges normally and without any problems. Cause Software in the control unit "N116/5 - DC charge-connection unit (DCCU)". Remedy For model series 167 (Only for USA): • Remedy is available: • Update software for N116/5 (DC charging control unit box) and perform SCN coding of N116/5. • Once the SCN coding has been updated, the engine diagnosis indicator lamp (MIL) is no longer actuated with this fault code. For other model series: • Work on the SW remedy for N116/5 (DC charging control unit box) is in progress. • Once the software is available, update the software for N116/5 and perform SCN coding of N116/5. • If this problem occurs, the vehicle start or charging functions are normally not affected; therefore do not replace any parts. • Replacing parts does not solve this problem.

  Associated Products (22)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz GLE-Class2021 Mercedes-Benz S-Class+ 2 more
  Associated Documents

  • DownloadMC-11015626-0001.pdf↗
• March 12, 2025•Document ID: 11015616

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI35.31-P-066469

  Date Added:

  March 14, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Possible humming noises from the drivetrain in the area of the rear axle, especially during tight cornering in the lower speed range. Cause Additives in rear axle differential oil Remedy Note: Please follow the instructions in this document. The replacement of components (other than those named for processing) is not effective. Remedy: A test drive must be performed. For accurate analysis (localization) of the noise, the "Steelman Chassis Ear" noise diagnosis kit can be used, for example. If the rear axle differential is unambiguously identified as the cause (noise source), the oil must be replaced. Observe the following: 1. Warm up the oil in the differential by means of a short test drive. 2. Drain the oil from the differential and fill it with new oil according to the parts list in the attachment. Please follow the procedure described in AR.35.31-P-0523OLC. Note: To ensure that the differential is drained as completely as possible, both rear wheels should be rotated slowly 2-3 turns while draining. Make sure that as little residual oil as possible remains in the differential. 3. Please advise the customer that in isolated cases the problem may continue to occur for another 30 to 60 miles after the oil has been replaced. If the problem is still present after the appropriate mileage: • Double check the appropriate mileage was driven. • Repeat the flushing and filling procedure a second time, make sure to properly flush all the diff fluid out • If no change after the second flush and additional mileage. replace the rear diff

  Associated Products (11)

  2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLE-Class2022 Mercedes-Benz GLE-Class2021 Mercedes-Benz GLE-Class2020 Mercedes-Benz GLE-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz S-Class2017 Mercedes-Benz SLC-Class
  Associated Documents

  • DownloadMC-11015616-0001.pdf↗
• March 11, 2025•Document ID: 11015574

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI54.30-P-079004

  Date Added:

  March 12, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The message "Device detected at diagnostics connection See Owner’s Manual" appears sporadically in the multifunction display of the instrument cluster while driving (see picture in attachment). Cause On vehicles with HERMES 3.0 currently, • A2389015700 • A2389015800 • A2389018400 • A2389018900 • A2389019000 • A2389019800 • A2579011200 • A2579012100 the above-mentioned message is sporadically displayed in the instrument cluster once the over-the-air updates to software release E843 (software part number A2389022409) have been performed. The issue is currently being analyzed; the cause is still unclear. Remedy Please manually commission the control unit N112/9 (HERMES) using XENTRY: XENTRY. "N112/9 - Control unit for telematics services (HERMES)" -> "Adaptations" -> "Control unit commissioning" -> "Commissioning of previously installed control unit" Invoice the required work using damage code 8251M/01 (damage location/damage type).

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  Associated Documents

  • DownloadMC-11015574-0001.pdf↗
• March 10, 2025•Document ID: 11015627

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.20-P-079002

  Date Added:

  March 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The luggage compartment lighting switches off and back on erratically if the tailgate is opened with the ignition switched off. Cause The problem was caused by a software error in the control unit N10/8 (Rear SAM). Remedy Software update to the control unit N10/8 (Rear SAM - Signal acquisition and actuation module rear control unit).

  Associated Products (17)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz S-Class2020 Mercedes-Benz GLC-Class
  Associated Documents

  • DownloadMC-11015627-0001.pdf↗
• March 10, 2025•Document ID: 11015617

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI72.20-P-075746

  Date Added:

  March 14, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double-clicking on the button instead. This reduces the likelihood of the button being activated accidentally or unintentionally. The recoding can be carried out as follows: 1. Enter AO Code O19 into VeDoc (O for Oscar, not "zero") 2. EZS N73: Perform SCN coding 3. Deactivate the vehicle key (a successful deactivation is indicated by the LED lighting up 2x briefly and then 1x for a long period). 4. Place the vehicle key on the key symbol in the storage compartment and then switch on the ignition. All other vehicle keys must be outside of the vehicle when doing this! Perform steps 3 and 4 successively for all vehicle keys. Notes: 6th, 7th and 8th generation keys can be deactivated as follows: Up to modification year 22/1 double-click on the locking button As of modification year 22/1, by pressing and holding the locking button + double-clicking on the release tab On model series 167, the storage compartment with the key symbol is located in the armrest. The SCN coding from the EZS is only transferred correctly to the vehicle key under the following conditions: Only one vehicle key is located in the vehicle, this key has been deactivated and it is positioned on the marking in the storage compartment for the data transfer. The costs for this adaptation are to be borne by the customer.

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• March 10, 2025•Document ID: 11015614

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  LI46.35-P-076566

  Date Added:

  March 14, 2025

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint A squeaking noise comes from the electric power steering; see video with example. Cause Toothed rack in the area of the screw drive of the electric power steering needs additional grease. Remedy 1. Lift the vehicle and remove the center engine compartment lining; for basic data, see WIS AR61.20-P-1105S 2. Loosen the bellows of the electric power steering on the right of the steering gear and slide outward on the tie rod – the tie rods do not need to be removed! For basic data, see WIS AR46.40-P-9998S 3. Turn the wheels fully to the right. The screw drive of the rack-and-pinion steering becomes visible. See picture 1 of screw drive 4. Clean the screw drive with a clean cloth and remove the existing grease. See picture 2 of cleaned screw drive 5. Prepare a clean brush for greasing the screw drive and, if necessary, mask off the metal sleeve of the brush or similar components to avoid damage to the steering housing or to the screw drive of the toothed rack. See picture 3 with example brush 6. Apply a sufficient amount of long-life grease (A001 989 84 51 09) to the screw drive of the toothed rack with the brush, making sure that this is applied evenly all around; see picture 4 of greased screw drive 7. Reinstall the steering bellows, making sure to replace the inner clamp! Important: The contact surfaces of the bellows and the rack-and-pinion steering should be coated with a thin layer of Renolit (Renolit CX-FO 20, A094 989 38 00 11). For basic data, see WIS AR46.40-P-9998S 8. Move the rack-and-pinion steering several times from one steering limitation to the other to ensure that the grease is evenly distributed in the housing. 9. Assemble in the reverse order.

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  Associated Documents

  • DownloadMC-11015614-0001.pdf↗
• March 8, 2025•Document ID: 11015667

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 5496430

  Date Added:

  March 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles. The software for the communication module does not correspond to the latest series production configuration. The communication module will receive an OTA update. The update is downloaded and installed in the background. During installation, the system can be used without restrictions. The new software will become active after the vehicle has been restarted. Remedy 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.

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  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLE2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11015667-0001.pdf↗
• March 7, 2025•Document ID: 11015663

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 5497748

  Date Added:

  March 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the communication software does not correspond with the latest series production configuration. The communication module will receive an OTA update which includes quality-enhancing optimizations and improves the system stability and accessibility of Mercedes me services. The update is downloaded and installed in the background. During installation, the system can be used without restrictions. The new software will become active after the vehicle has been restarted. Remedy 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.

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  2025 Mercedes-Benz AMG GT2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz G-Class+ 36 more
  Associated Documents

  • DownloadMC-11015663-0001.pdf↗
• March 7, 2025•Document ID: 11015659

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 5497746

  Date Added:

  March 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the communication software does not correspond with the latest series production configuration. The communication module will receive an OTA update which includes quality-enhancing optimizations and improves the system stability and accessibility of Mercedes me services. The update is downloaded and installed in the background. During installation, the system can be used without restrictions. The new software will become active after the vehicle has been restarted. Remedy 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 (42)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLE-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLE-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class+ 22 more
  Associated Documents

  • DownloadMC-11015659-0001.pdf↗
• March 7, 2025•Document ID: 11015543

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI07.70-P-078520

  Date Added:

  March 11, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Check engine light on. Engine in limp-home mode. Rough running. Low fuel rail pressure fault code P008700 stored in MRG2 control unit. Additional faults below may be stored in MRG2 control unit: Misfire- P030000, P030100, P030200, P030300, P030400, P030084, P030004 Mixture adaptation- P217800 P218762, P017100, P017200, P217700 Injector malfunction- P02EE00, P02EF00, P02F000, P02F100, P214601, P214901 Cause Gas bubbles forming in low pressure fuel system due to fuel boiling. Remedy -Check engine control unit N3/10 for software update. -Proceed with software update if new software version 2549032303, 2549032403, 2549032503 or 2549032603 are found. -Clear faults and check for any symptoms on road test **Do not replace hardware unless clear part malfunction is determined**

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  Associated Documents

  • DownloadMC-11015543-0001.pdf↗