Mercedes-Benz C-Class Service Bulletins

930 manufacturer communications on file.

• October 3, 2024•Document ID: 11008880

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078473

  Date Added:

  October 9, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved. In vehicles with "N112/9 - control unit for telematics services (HERMES)": • The message "SOS - service not activated" permanently lights up in the instrument cluster AND the actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). • In the control unit log of the "N112/9 - control unit for telematics services (HERMES)", the registration error "CEP Invalid VIN/UniqueID combination" is displayed. In vehicles with "N112/2 - control unit for telematics services (RAMSES)": • The actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). • In the control unit log of the "N112/2 - control unit for telematics services (RAMSES)", the registration error "CEP_ VIN_UNIQUEID_INVALID" is displayed. The emergency call is not impaired. Cause In the event of a control unit replacement, sporadic problems in the back end could result in data from the new control unit not being updated in the back end system. Remedy Please create a TIPS case. In some cases, the problem rectifies itself on its own after a little while.

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  Associated Documents

  • DownloadMC-11008880-0001.pdf↗
• October 1, 2024•Document ID: 11008873

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.00-P-074450

  Date Added:

  October 9, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Tension-releasing impact of the propeller shaft with the force-free in D "KID" function, after vehicle has stopped. Cause The tension-releasing jolt in the drivetrain originates as a result of the "release" of energy stored when braking through the force-free switch after stopping. It is suspected that the longitudinal bearing is being placed under tension here as a result of the vehicle "dropping off". Remedy 1. Mark the installation position of the joint prior to the removal (picture a+b). This is important for vehicles with a weighted drivetrain ex factory to ensure correct installation after operations have been completed. 2. Clean and degrease propeller shaft toothing. The toothing must be free of grease, e.g. through the use of a brake cleaner. Do not use wire brushes, else the surface could be damaged (picture c). 3. Coat propeller shaft toothing with A 000 989 16 08 Antifriction coating. Coat the entirety, ensuring that the subsurface is no longer visible. When doing so, only coat the outer toothing. Ensure that the coat is not too thick, otherwise the coating could chip (picture d). 4. Observe the drying time of at least 1 hour. 5. Lightly grease the propeller shaft toothing at the outer and inner toothing with A 001 989 44 51 12 Grease (picture e).

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  Associated Documents

  • DownloadMC-11008873-0001.pdf↗
• September 28, 2024•Document ID: 11008091

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.70-P-077433

  Date Added:

  September 28, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: • It is recommended to replace the cover caps. • The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.

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  Associated Documents

  • DownloadMC-11008091-0001.pdf↗
• September 27, 2024•Document ID: 11008081

  Service Campaign
  ELECTRICAL SYSTEM; STRUCTURE:BODY

  Mfr Comm. #:

  2024090014

  Date Added:

  September 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2024 C-Class and E-Class (206 and 214 platform) vehicles, the electronic ignition lock control unit does not correspond to current specifications. As a result, the ignition lock may not react after a key cycle, which could result in the vehicle not starting and the instrument cluster display not reacting. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the electronic ignition lock control unit software.

  Associated Products (2)

  2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class
  Associated Documents

  • DownloadMC-11008081-0001.pdf↗
• September 27, 2024•Document ID: 11008080

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  2024080004

  Date Added:

  September 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2024 S-Class and EQS (223 and 297 platform) vehicles, the DRIVE PILOT Supplemental Booklet does not correspond to current production specifications. What We’re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will replace the DRIVE PILOT supplemental booklet.

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  2024 Mercedes-Benz C-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11008080-0001.pdf↗
• September 27, 2024•Document ID: 11008073

  Service Campaign
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  2024090002

  Date Added:

  September 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  1. Connect XENTRY Diagnosis. 2. Update Digital Operator's Manual. To do this, select menu item "Quick test view . A26/17 - MBUX multimedia system (head unit) . Adaptations . Control unit update . Update of control unit software". Then follow the user guidance in XENTRY Diagnosis. The Digital Operator's Manuals are downloaded automatically via Retail Data Storage to XENTRY Diagnosis to match the affected vehicle. 3. Disconnect XENTRY Diagnosis. 4. Put the Operator’s Manual, supplements and accordion-fold document into the vehicle document wallet and place inside the vehicle. The missing Operator’s Manual, supplements and accordion-fold document must be enclosed subsequently.

  Associated Products (1)

  2024 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11008073-0001.pdf↗
• September 25, 2024•Document ID: 11008065

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI00.20-P-078424

  Date Added:

  September 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Cause The following conditions can occur on vehicles with a disconnected on-board electrical system battery 12V/48V): • The period in which the on-board electrical system battery is disconnected cannot be counted by the maintenance computer. • As soon as the on-board electrical system battery is connected again, the maintenance computer automatically starts counting without making a correction to the remaining time (days to next due service). Remedy Allowance must be made for vehicles with disconnected on-board electrical system battery. The following process must be complied with to achieve a correct calculation: • (A): The number of days from the "day of vehicle handover or the last conducted Service A/B" onward up to the "day on which the vehicle arrived at the workshop". • (B): Remaining time (days to next due service date shown on instrument cluster). • (C): Days on which the on-board electrical system battery was disconnected. The formula requires the following condition to be complied with. 365 - (A) [days] = (B) - (C) [days] If the on-board electrical system battery (12V/48V) was not disconnected and the remaining time shown on the instrument cluster in the customer or workshop menu (days to next due service) is implausible or the formula was not complied with please create a TIPS case and attach the control unit logs from the instrument cluster and the PTCU as well as a quick test with freeze frame data.

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  Associated Documents

  • DownloadMC-11008065-0001.pdf↗
• September 21, 2024•Document ID: 11007974

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078307

  Date Added:

  September 24, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: • Connect test adapter to pressure tester. (Figure 1) • Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. • Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). • Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. • Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). • Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. • If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. • If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: • LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system • LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system

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  Associated Documents

  • DownloadMC-11007974-0001.pdf↗
• September 18, 2024•Document ID: 11008035

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI15.40-P-077947

  Date Added:

  September 25, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Combustion engine could no longer be started, only electric driving possible Cause High-voltage belt-driven starter-alternator faulty Remedy Requirement: Prior to the implementation of the test work, it must be ensured that the person carrying out this work has successfully completed the qualification "T1716F Diagnosis at high voltage level 4" and the vehicle-specific training. Note: In order to check whether the high-voltage belt-driven starter-alternator is faulty, please carry out the test below. If the fault "P0E2F00 The electrical fuse B for the high voltage has a malfunction" is stored in the N82/10 BMS control unit, the HV protocol must be checked to see whether the fuse for the auxiliary consumers is defective. In this case, the high-voltage battery must be replaced after the short circuit has been eliminated. (See attachment) The faulty high-voltage belt-driven starter-alternator must always be sent back via the existing return delivery process for analysis. Check: Please disconnect the high-voltage plug at the high-voltage belt-driven starter-alternator and connect test adapter 000 589 94 63 00. Measure resistance HV+ to HV-. If the final measurement result is between 0–1 ohm, the high-voltage belt-driven starter-alternator with the short circuit must be replaced. If either one of or both the fault codes P0C0B16 and P0C0B17 are saved in the high-voltage belt-driven starter-alternator control unit G2/3, please replace the high-voltage belt-driven starter-alternator, since no short circuit can be measured here and this therefore concerns a hardware defect. Please check the serial number on the silver adhesive label below the SW number on the front of the high-voltage belt-driven starter- alternator. Example: 2314300044 (the first 10 digits, see attachment) Important note: If the number is greater than 2329100027, a TIPS case must be created. In this instance, please attach the following documents to the TIPS case: • Quick test • High-voltage event log • Picture of the silver adhesive label on the front of the high-voltage belt-driven starter-alternator (serial number) • Attach the measurement results with pictures

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  • DownloadMC-11008035-0001.pdf↗
• September 18, 2024•Document ID: 11007969

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078156

  Date Added:

  September 24, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint When using the offroad display in the MBUX, the "Transparent hood" function cannot be activated using the camera symbol. Cause MBUX FUP5 software: • E504.3 (A 297 904 97 00) • E504.4 (A 297 904 03 01) Remedy The remedy is currently being developed.

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  Associated Documents

  • DownloadMC-11007969-0001.pdf↗
• September 18, 2024•Document ID: 11007966

  Service Bulletin/Repair Instructions
  SUSPENSION; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.90-P-078381

  Date Added:

  September 24, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Display dark (total or partial) of one or more ASCM (AMG) steering wheel button displays - see attachment. Note: There is no loss of vehicle functionality due to this complaint. Cause Software can cause a partial display on the ASCM. Remedy Please perform the following steps in the event of a total or partial display of the ASCM displays: 1. Perform a hard reset (disconnect power supply) of control unit A74/2 (ASCM) for 2 minutes. 2. Perform a software update of the A74/2 (ASCM), N145 (DRVU) and A26/17 (HU). 3. Reset the user profile via the head unit settings menu. (Full factory reset)

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  • DownloadMC-11007966-0001.pdf↗
• September 17, 2024•Document ID: 11008062

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI08.00-P-072749

  Date Added:

  September 26, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The electric range does not meet customer's expectations. Cause The following information is being provided for educational purposes only: At Mercedes-Benz, we believe that our vehicles should display to the driver a range that in all probability can actually be achieved. These ranges are predictions - the range actually achieved may therefore differ from the range shown. The calculation for the predicted range takes into account the current outside temperature, the set temperature of the air conditioning system, the battery capacity and the characteristics of previous journeys (sporty/anticipatory driving style). Where previous journeys are concerned, factors given particular consideration are individual driving style and the use of other power consumers (seat heating, lights, charging function for smartphones, etc.). It is therefore possible that data from the last few hundred kilometers driven is also used in the calculation. Consequently any change in usage behavior will only slowly affect the predicted range. If active navigation or active commuter route is used, additional information about the route ahead (for example elevation profile, traffic volume) can be included in the range calculation. Remedy The customer's individual input to the range can be reset. Depending on the vehicle, the reset can be done in the instrument cluster or the head unit. For plug-in hybrid vehicles of model series 166 (all), 205 (up to modification year 18/1), 213 (up to modification year 17/2), 222 (up to modification year 17/2), 253 (up to modification year 19/1), the range can be reset by resetting the trip computer ("From reset", "From start" and "Day cycle counter"). After the reset, a value based on the certified range will be shown. For electric and plug-in hybrid vehicles of model series 205 (from modification year 18/2), 213 (from modification year 18/1), 222 (from modification year 18/1), 253 (from modification year 19/2) and model series 118, 167, 177, 206, 223, 247, 293, 295, 297 a reset is only possible by resetting the head unit to the factory settings. This will delete all saved customer data and any settings made (e.g. radio settings, navigation destinations). If necessary, therefore, back up the customer data onto a USB flash drive using the Backup function before performing a reset. As from vehicles with NTG 7, Mercedes me is used for the making the backup. After the reset, an empirical value is displayed that is based on normal use of the vehicle and the current climatic conditions (set temperature and outside temperature - commensurately higher values will be achieved if the air conditioning system is switched off). Depending on driving style, outside temperature and which power consumers are actually switched on, the achieved range may significantly exceed this range, but likewise may also fall significantly short of it. Further information on battery capacity and aging can be found in document SI47.70-P-0070A.

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  2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz S-Class2019 Mercedes-Benz C-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz S-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz GLC-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz S-Class2016 Mercedes-Benz C-Class2016 Mercedes-Benz S-Class2015 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11008062-0001.pdf↗
• September 17, 2024•Document ID: 11008032

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  LI42.10-P-063502

  Date Added:

  September 25, 2024

  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. These are dependent on speed, brake pressure or ambient conditions such as temperature and air humidity. (Extract from the owner's manual) If customer complaints are received, please proceed as follows: • Check whether, apart from this document, an additional document exists for the model series in question, and if so, work through it • Check whether the complaint can be reproduced and at which axle the noises occur (ideally together with the customer while driving) • Check the friction pairings of the affected axle for wear, mechanical damage or localized overheating damage. a) If this is the case, replace the damaged component parts and assess the brake again with regard to noise. b) If there no obvious visible or technical problems with the brake system, we recommend bedding in the brakes by following the procedure below: • Before trip, the mileage incurred must be clarified with the customer (approx. 50 km) • Select a suitable route • Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 100 km/h to 50 km/h (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1.5 km between brake applications • Finally drive approx. 5 km to allow the system to cool • Reassess the problem If this action fails to deliver the desired success, create a TIPS case with the following information: • Observe SI00.00-P-0086A • Have parts already been replaced? If yes, when and which parts (date, mileage)? • How is the customer's driving profile, and when/where is it reproducible? • Create a video/ sound file • Attach usable pictures of the brake components on the affected axle (important: including the back of the lining)

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  Associated Documents

  • DownloadMC-11008032-0001.pdf↗
• September 16, 2024•Document ID: 11008056

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI07.70-P-078078

  Date Added:

  September 26, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Check engine light on. Fault code P207273 - "Throttle actuator valve is blocked due to ice" stored. Engine may crank and not start. Fault code P210185 may also be stored. Cause Moisture freezing on throttle actuator during extreme low ambient temperatures. Remedy Update software of engine control module. Software increases throttle valve flapping after engine turned off to prevent moisture buildup.

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  Associated Documents

  • DownloadMC-11008056-0001.pdf↗
• September 11, 2024•Document ID: 11007796

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078303

  Date Added:

  September 14, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Individual functions such as sliding sunroof or roller sunblind can no longer be operated using the gesture recognition system. Cause Gesture recognition system control unit software N168 Remedy For vehicles before modification year 23/2: A remedy is currently being developed. Replacing parts will have no effect. For vehicles as of modification year 23/2: Considered to be a series production configuration. A change will not be possible in future.

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  Associated Documents

  • DownloadMC-11007796-0001.pdf↗
• 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.

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  Associated Documents

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• September 10, 2024•Document ID: 11007752

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078107

  Date Added:

  September 13, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Transfer of selected user-defined scene/ animation (MeApp) from HU to ECU software fails to start. Charging bar stops at 0%. (Picture in attachment) Cause Communication between light control unit and HU Remedy Software update to latest version: - A26/17 - MBUX multimedia system (head unit) - E1n14 - Front left digital headlamp control unit (DHLS-CU-VL) - E2n14 - Front right digital headlamp control unit (DHLS-CU-VR)

  Associated Products (6)

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  Associated Documents

  • DownloadMC-11007752-0001.pdf↗
• September 10, 2024•Document ID: 11007751

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI65.10-P-078300

  Date Added:

  September 13, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Indentations in the roof paneling in row bow areas. Note: This is within the surface area of the roof skin when no sunroof is applicable. See attached photo. Cause Flexibility of adhesive joint between roof bow and roof paneling. Remedy 1 - Remove headliner, see AR68.30-P-4300WT. 2 - Cut open adhesive bead in area of visible deformation in roof paneling using a cutting wire at the roof bows. *Caution: Do not damage coating on inside of roof paneling. 3 - Relieve tension of outer skin of roof by applying heat (sun or paint drying booth). 4 - Check again if indentations are still visible. If yes, continue cutting open bead. Otherwise, move on to the next point 5 - Only continue with further operations after roof paneling has cooled down. 6 - Touch up any paint damage on roof bow or inside of roof paneling using touch-up paint pen/primer stick. 7 - Finally, apply adhesive sealing compound using cartridge gun. Apply the material here to the cut open gap and flat onto the surrounding old adhesive sealing compound. Make sure that the adhesive sealing compound makes contact between the roof bow and the roof paneling. 8 - Install headliner, see AR68.30-P-4300WT. Disclaimer NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.

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  Associated Documents

  • DownloadMC-11007751-0001.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

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  Associated Documents

  • DownloadMC-11007753-0001.pdf↗
• September 10, 2024•Document ID: 11007673

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI98.00-P-078106

  Date Added:

  September 11, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Damage or discoloration to paint protection films on vehicle. Cause Chip protection films are a wear item that may need to be replaced over the life of the vehicle. They are typically not covered by vehicle warranty. Remedy To properly install a paint/chip protection film, please follow the below guidelines: #1 - Utilize a solution that is 0.2% soap solution (1,000ml of water + 2ml of liquid soap). #2 - Clean the paint surface and ensure it is dust-free. #2a - When cleaning, you can utilize isopropyl alcohol (Rubbing Alcohol) to assist with cleaning. #2b - We recommend a lint-free rag for secondary dusting. #3 - Wet hands with the soapy water solution to protect the adhesive surface. #4 - Remove the backing paper from the film completely. #5 - Moisten the vehicle surface with the soapy water. You can also lay the protective film with adhesive side out onto the wetted surface to also cover the adhesive layer in the soapy water solution. #6 - Remove film and flip over to gently place adhesive side against the paint surface. #7 - Working from the center out, use a squeegee to press the soapy water solution out from under the film. Use sufficient pressure to firmly press the film into the paint surface, but not an excessive amount to damage or stretch the film. #8 - Allow film and paint to "cure" until all of the moisture has evaporated. At this time the adhesive should be dried and cured enough for sufficient hold to release the vehicle.

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  Associated Documents

  • DownloadMC-11007673-0001.pdf↗