Mercedes-Benz C-Class Service Bulletins (2018)

246 manufacturer communications on file.

• September 10, 2024•Document ID: 11008323

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078302

  Date Added:

  October 3, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate into the headlamp. This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check housing cover of lamp unit for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove headlamps. 2. Remove all grommets from outlet openings. 3. Seal vent openings with sealing profile. Important: All openings must be sealed carefully for the pressure compensation diaphragm to work properly! 4. Remove existing service cover. 5. Place desiccant packs into the new service covers and bolt down (Picture_01). 6. Glue the new diaphragm onto the intended surface at the service cover (Picture_02). Note: The bonding surface must be clean and dry. 7. Attach service cover with desiccant pack at headlamp. 8. Install headlamp. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_03). 2. The new transparent diaphragm must be correctly bonded (Picture_04). 3. Check headlamp housing for any external damage.

  Associated Products (119)

  2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class+ 99 more
  Associated Documents

  • DownloadMC-11008323-0001.pdf↗
• September 10, 2024•Document ID: 11007753

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078301

  Date Added:

  September 13, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Headlamp or 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. Headlamps comply with all applicable standards. 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 and LED rear lamps: 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 or trunk. 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 the formation of condensation, check the headlamp for a defect. (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. Remedy 2 A Damaged 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 in accordance with 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. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304

  Associated Products (263)

  2025 Mercedes-Benz GLA-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz EQB-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 GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLE2023 Mercedes-Benz CLS-Class+ 243 more
  Associated Documents

  • DownloadMC-11007753-0001.pdf↗
• September 9, 2024•Document ID: 11007790

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078304

  Date Added:

  September 14, 2024

  Manufacturer:

  MERCEDES BENZ

  Summary

  Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check headlamps for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove existing service cover with diaphragm (Picture_01 (1)). 2. Insert desiccant packs (Picture_01 (2)) into new service covers with diaphragm and seal with protective grille and bolt down (Picture_01 (3)). Note: One desiccant pack is required for each small service cover, and two desiccant packs are required for each large service cover. 3. Stick the supplied diaphragm onto the new service cover and attach at the headlamp. Note: The bonding surface must be clean and dry. 4. If the headlamp housing has an additional 2nd diaphragm, this must be covered over with masking tape. Note: The bonding surface must be clean and dry. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_02). 2. The new transparent diaphragm must be correctly bonded (Picture_03). 3. Check headlamp housing for any external damage.

  Associated Products (109)

  2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz S-Class+ 89 more
  Associated Documents

  • DownloadMC-11007790-0001.pdf↗
• September 9, 2024•Document ID: 11007728

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.00-P-075630

  Date Added:

  September 12, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint To insure vehicle down time is kept at a minimum and all required information is available when case is escalated, as well as assist technicians with checks that may help lead in resolving issue without case creation. THIS LI IS NOT TO BE USED AS A REASON FOR CASE CREATION BUT AS A GUIDE IF A CASE IS NEEDED Cause There are, at times, additional steps workshops can do to help diagnose and rectify transmission complaints. Remedy When opening a case for transmissions a EEPROM, Quick Test, and VGS CUL are absolutely necessary Please also check for any relevant LI’s before opening case. Also, recommend having customer fill out Transmission Drivability Diagnostic Worksheet especially if complaint is hard to reproduce or intermittent (Work sheet Location: Xentry Portal >> Local Contents >> Diagnostic Info>> Diagnostic Worksheets ) If a previous repair attempt or visit was made for the same concern please include the date, mileage, and case number if applicable of that repair/visit with a short description of what was done. Follow IPR: ( LI27.00-P-073124 ) All IPR suggestions are covered by warranty and there is no need for cases to confirm IPR. Complete IPR suggestions and close out IPR process. If complaint is not fixed and IPR still suggests the same repair once closed out and run again, then a case may be needed. Transmission Health page is a good indicator of issues within transmission if clutch or brake pack stays NOK after adaptions and unable to be made to a green OK then an internal fault is present. Proceed with replacing affected clutch pack. IF more than 3 are red and NOK replace transmission (include printout with warranty claims) **** FOR 167 chassis with M264 engine B08 may be red and NOK, IGNORE this, B08 is still okay **** Shift complaints: Note: AMG variants are known to have a harsher shift see LI27.60-P-075147 It is always worth comparing to a like vehicle if possible to see if shift is uncharacteristic Perform Valve flushing procedure Perform 5 Torque Converter adaptions in a row (Save the results page) Perform standstill adaptions (Save the results page) Drive adaptions if necessary: Drive C mode keep RPM between 2000-2200rpm and lightly let off pedal to force shift wait 2-3 sec then roll on throttle to rpm back up to 2000-2300 rpm repeat for gears 1-3 *For gears 4-8 allow rpm up to 2700 and let off slightly to force upshift = repeat x 10 *For downshift - highest gear possible 8 or 9 - allow decel with light brake drag (allow at least 5s between downshifts for trans to adapt. Go down to 2nd and repeat x10 *Change to sport mode and repeat process again *Lock car to allow sleep at least 10min and restart and road test for quality. After adaptions a new EEPROM should be recorded and included with the original if opening a case Understand shift complaints need to be reproducible to address. If needed drive with client to reproduce the complaint. If shift complaint is intermittent a CAN trace of the issue occurring will be useful (see attached instructions) Shudder: If there is a shudder monitor torque convertor actual values to see if it occurs during slipping, Additionally can lock up convertor and drive to see if issue is resolved Jolting/Shudder: If the vehicle is AWD: unplug AWD control unit or drive vehicle in dyno mode to see if transfer case is causing the jolt/ harsh shift If located from transfer case check fluid and perform a flush if needed to try to rectify the issue. Vibrations: NVH trace is needed, what level vibration is being experienced and where is it located? Is the Vibration felt in neutral? Dyno mode? Does it change with speed? Etc. Noise complaint: Isolate the noise location using chassis ear. MUST attach a sound recording or video of the noise. Describe when the noise is present: Does it change with gear or speed? Does it occur with vehicle in neutral or in glide mode? Does operating temperature effect noise? Does incline/decline or steering angel effect noise?

  Associated Products (85)

  2024 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 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-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class+ 65 more
  Associated Documents

  • DownloadMC-11007728-0001.pdf↗
• August 10, 2024•Document ID: 11006658

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  NCU - 2022080005

  Date Added:

  August 29, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT (204, 205, 207, 212, 213, 217, 221, 222, 463, 216, 218, 166, 292, 253, 231, and 190 platforms) vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle.

  Associated Products (74)

  2018 Mercedes-Benz AMG GT2018 Mercedes-Benz C-Class2018 Mercedes-Benz CLS-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz G-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz GLE-Class2018 Mercedes-Benz GLS-Class2018 Mercedes-Benz S-Class2018 Mercedes-Benz SL-Class2017 Mercedes-Benz AMG GT2017 Mercedes-Benz C-Class2017 Mercedes-Benz CLS-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz G-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz GL-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz GLS-Class2017 Mercedes-Benz S-Class+ 54 more
  Associated Documents

  • DownloadMC-11006658-0001.pdf↗
• August 9, 2024•Document ID: 11031806

  Other
  ENGINE

  Mfr Comm. #:

  CL-Intake Line Assembly

  Date Added:

  April 30, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (“MBUSA”) is extending the coverage for the intake line assembly on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years / 150,000 miles (whichever occurs first), and applies to the vehicle regardless of ownership. Why the warranty extension? On certain Model Year vehicles, under certain circumstances, the partial-load ventilation valve (a part of the intake line assembly) may not work as intended, resulting in the illumination of the check engine Malfunction Indicator Lamp (‘MIL’). A faulty partial-load ventilation valve might also increase exhaust gas emission. Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. • If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be performed at no cost to you. • This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.

  Associated Products (15)

  2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11031806-0001.pdf↗
• August 9, 2024•Document ID: 11008064

  Other
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  CL - 2022080005

  Date Added:

  September 26, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. Therefore, an Emission Service Campaign is being conducted to remedy the situation. Our records indicate that your vehicle is included in the affected population of vehicles.

  Associated Products (73)

  2018 Mercedes-Benz AMG GT2018 Mercedes-Benz C-Class2018 Mercedes-Benz CLS-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz G-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz GLE-Class2018 Mercedes-Benz GLS-Class2018 Mercedes-Benz S-Class2018 Mercedes-Benz SL-Class2017 Mercedes-Benz AMG GT2017 Mercedes-Benz C-Class2017 Mercedes-Benz CLS-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz G-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz GL-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz GLS-Class2017 Mercedes-Benz S-Class+ 53 more
  Associated Documents

  • DownloadMC-11008064-0001.pdf↗
• July 23, 2024•Document ID: 11005294

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078069

  Date Added:

  July 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4 °F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 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 (defogging progress).

  Associated Products (263)

  2025 Mercedes-Benz GLA-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz EQB-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 GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLE2023 Mercedes-Benz CLS-Class+ 243 more
  Associated Documents

  • DownloadMC-11005294-0001.pdf↗
• July 20, 2024•Document ID: 11005314

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI20.00-P-074205

  Date Added:

  July 30, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Yellow Coolant warning comes on in cluster Fault codes below are current or stored in MED41 P0A0500- The actuation of the circulation pump for the low-temperature circuit has an open circuit. P00B700- The coolant flow is too low. P0C7300- Circulation pump 1 for the low-temperature circuit has a malfunction. Cause Air may be trapped in the coolant circuit for transmission cooler Remedy Check coolant level. -If coolant level is low, locate source of leak and correct. -If coolant level is ok, perform procedure in attached instructions to bleed the coolant circuit to transmission cooler. 1. Allow cooling system to cool to ambient temperature. 2. Fill coolant reservoir completely. 3. Slightly open coolant connection shown in attachment (red arrow) to allow air to escape. 4. Once coolant flows out, close connection and correct coolant level. 5. Clear fault codes and check for further symptoms.

  Associated Products (15)

  2023 Mercedes-Benz C-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLC-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLC-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz GLC-Class2019 Mercedes-Benz C-Class2019 Mercedes-Benz GLC-Class2018 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11005314-0001.pdf↗
• July 17, 2024•Document ID: 11005313

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI07.70-P-078047

  Date Added:

  July 30, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Check engine light on and fault code P019185 current or stored in MED41 control unit. Adaptation and misfire faults may also be stored. Vehicle may enter limp home mode. Cause False detection of rail pressure sensor out of range. Remedy Update software of engine control module N3/10. Reset mixture adaptation and clear fault codes.

  Associated Products (40)

  2025 Mercedes-Benz GLA-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2021 Mercedes-Benz A-Class+ 20 more
  Associated Documents

  • DownloadMC-11005313-0001.pdf↗
• July 9, 2024•Document ID: 11031589

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  EW - Intake Line Assembly

  Date Added:

  April 27, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  This NCU replaces the prior NCUs issued on August 25, 2023, August 31, 2023 respectively and, contains clarification on parts ordering. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the intake line assembly 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) due to the following condition: •Under certain circumstances, the partial-load ventilation valve (a part of the intake line assembly) may not work as intended,resulting in the illumination of the check engine Malfunction Indicator Lamp (‘MIL’). A faulty partial-load ventilation valvemight also increase exhaust gas emission. Please be advised that all repairs being claimed under this extended warranty must have a Quick Test uploaded with the following fault code information and may be audited. •P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has amalfunction.

  Associated Products (17)

  2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11031589-0001.pdf↗
• July 9, 2024•Document ID: 11005344

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.00-P-073124

  Date Added:

  July 31, 2024

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G-TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been developed and integrated into XENTRY Diagnosis. This ensures an automated diagnosis process. Cause As part of the on-going quality monitoring process and associated quality and damaged part appraisals, a high number of ineffective repairs have been discovered. Such ineffective repairs have a negative impact on all those involved. For the customer, it means high costs and long repair times and for the dealer, it may result in the warranty claim being rejected. Remedy General note: IPR is available for: ·NAG3 Classic (automatic transmission 725.0) ·NAG3 - AMG sports models (AMG 43 and AMG 53 with converter) ·NAG3 - AMG 63 ·NAG3 - Hybrid

  Associated Products (82)

  2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-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-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz G-Class+ 62 more
  Associated Documents

  • DownloadMC-11005344-0001.pdf↗
• July 9, 2024•Document ID: 11005331

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.10-P-075869

  Date Added:

  July 30, 2024

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint Only vehicles with a variable transfer case are affected. 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 Cause Modified oil quality of the transfer case over time Remedy Check initial quick test for faults in the following control units N45 - 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: Check the oil level of the transmission If the oil level is correct: Unplug the connector for the transfer cases control unit Reassess the vehicle on a subsequent test drive If the complaint no longer occurs: Perform an oil change of the transfer case Reassess the vehicle following the oil change If the problem continues to occur with the plug removed or after the oil change has been carried out: Create a TIPS case with the following data Initial quick test with fault freeze frame data EEPROM data from Y3/8 Transmission control unit EEPROM data from N45 All-wheel drive Injector performance data

  Associated Products (84)

  2024 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-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class+ 64 more
  Associated Documents

  • DownloadMC-11005331-0001.pdf↗
• July 8, 2024•Document ID: 11005276

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI01.20-P076894

  Date Added:

  July 26, 2024

  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 Model year 2018 C300 | Model year 2016-2018 GLC300 and E300 | ALL model year SLK/SLC300 and hybrid variants Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. This LI will be updated once the software solution is available for model year 2018 C300 and 2016-2018 GLC300 and E300 vehicles. Model year 2015-2017 C300 | Model year 2019 GLC300 and E300 Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required.

  Associated Products (16)

  2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11005276-0001.pdf↗
• May 22, 2024•Document ID: 11000624

  Service Bulletin/Repair Instructions
  ENGINE; FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  LI07.61-P-070707

  Date Added:

  June 1, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly and/or a loss of power. Multiple Causes Remedy Please see the document "Remedy Instructions" in attachments. For MY19+ G63 there may be an alternate solution available. Please reference LI07.61-P-076755 before performing the steps in this LI.

  Associated Products (53)

  2024 Mercedes-Benz AMG GT2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLE-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 S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz E-Class2022 Mercedes-Benz G-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class+ 33 more
  Associated Documents

  • DownloadMC-11000624-0001.pdf↗
• May 14, 2024•Document ID: 11000623

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI01.20-P-076894

  Date Added:

  June 1, 2024

  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 Model year 2015-2018 (non-hybrid), and ALL model year 172 and hybrid variants Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. This LI will be updated once the software solution is available for hybrid and model year 2015-2018 vehicles. Model year 2019 (Except model 172 and hybrid variants) Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required. This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty – Intake Line Assembly".

  Associated Products (17)

  2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11000623-0001.pdf↗
• May 8, 2024•Document ID: 11000598

  Service Bulletin/Repair Instructions
  STEERING; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI46.35-P-073051

  Date Added:

  May 31, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noticeable vibrations at the steering wheel: • At speeds between 40mph and 75mph • On straight stretches of road and in long corners • With driver assistance systems switched on Cause Control oscillations in the electric power steering. Remedy Perform software update of electric power steering (N68). Note: Please ensure newest Xentry release software is installed and all addons are updated. After the software update, teach in the steering limitations of the electric power steering again: 1. Start engine 2. Turn steering wheel all the way to the left and briefly hold at the steering limitation 3. Turn steering wheel all the way to the right and briefly hold at the steering limitation 4. Perform a test drive in which you drive at approx. 5-10 km/h in an "8" shape, alternately turning the steering wheel to the steering limitations on the left and right. If vibrations can still be felt following the software update: 1. Connect XENTRY and select control unit N68 - Electric power steering (ES) 2. Switch to the "Adaptations" menu item, then under the "Teach-in processes" item, run the "Special function" in full. With this function, parameters of the software are adapted to reduce vibrations in the steering wheel. If vibrations continue to occur in the steering wheel despite this action, please create a TIPS case.

  Associated Products (26)

  2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLC-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz CLS-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz GLC-Class2019 Mercedes-Benz C-Class2019 Mercedes-Benz CLS-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class+ 6 more
  Associated Documents

  • DownloadMC-11000598-0001.pdf↗
• April 18, 2024•Document ID: 10253707

  Service Bulletin/Repair Instructions
  VISIBILITY

  Mfr Comm. #:

  EW -High Voltage

  Date Added:

  May 1, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC ("MBUSA") is extending the warranty coverage on the HV Refrigerant Compressor & Condenser 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, due to the following condition: The copper wire winding in the HV refrigerant compressor might corrode over time and could cause the battery management system to diagnose a lower insulation resistance leading to an insulation error. Due to the physical connection of the HV refrigerant compressor to the HV electrical system, the insulation error would trigger a fault in the entire HV electrical system. A warning message may be displayed (e.g., battery symbol with text malfunction, without restarting engine - visit workshop, towing prohibited see owner's manual) in the instrument cluster. Both electric and combustion engine driving is possible. However, if the driver ignores the visit workshop without restarting a message and switches off the vehicle, it would no longer be able to start.

  Associated Products (12)

  2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz S-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz S-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz GLE-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz GLE-Class2017 Mercedes-Benz S-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLE-Class
  Associated Documents

  • DownloadMC-10253707-0001.pdf↗
• April 15, 2024•Document ID: 10253722

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  LI01.20-P-076894

  Date Added:

  May 1, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  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 The partial-load ventilation valve (a part of the intake line assembly) may not work as intended. Model year 2015-2018 Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. This LI will be updated once the software solution is available for model year 2015-2018 vehicles. Model year 2019 Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required. This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty Intake Line Assembly".

  Associated Products (17)

  2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz SLC-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz SLC-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz SLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz SLC-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz GLC-Class2016 Mercedes-Benz SLK-Class2015 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-10253722-0001.pdf↗
• January 18, 2024•Document ID: 10249726

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  NCU-OTAcommNoMMC

  Date Added:

  February 6, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that in certain MY 2017-2021 C-Class, CLA, CLS, E-Class, GLC, GLE, GLS, AMG GT, S-Class, SL, and SLC (205, 117, 257, 213/238, 253, 166/292, 190/290,217/222, 231, 172) vehicles, the software of the communication module does not correspond with the latest series production configuration. This free of charge update includes quality-enhancing optimizations for the communication module to improve the system stability and better availability of the Mercedes me services. The update is downloaded and installed in the background. This process takes approx. 15 minutes. During the installation, the system can be used without restrictions. The new software will be active after the vehicle has been switched off. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge without an additional workshop visit via the data link of the communication module. All customers will be mailed a letter informing them of this software update.

  Associated Products (53)

  2021 Mercedes-Benz AMG GT2021 Mercedes-Benz C-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz GLE-Class2021 Mercedes-Benz GLS-Class2021 Mercedes-Benz S-Class2020 Mercedes-Benz AMG GT2020 Mercedes-Benz C-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz CLS-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz GLE-Class2020 Mercedes-Benz GLS-Class2020 Mercedes-Benz S-Class2020 Mercedes-Benz SLC-Class2020 Mercedes-Benz SL-Class+ 33 more
  Associated Documents

  • DownloadMC-10249726-0001.pdf↗