Mercedes-Benz C-Class Service Bulletins

930 manufacturer communications on file.

• January 31, 2025•Document ID: 11013884

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  EW - Engine Thermostat

  Date Added:

  February 6, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  This NCU supersedes the prior NCUs issued on December 1, 2023 and February 06, 2024 and includes additional MY 2019 AMG G63 vehicles. 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 engine thermostat (including software update) installed in certain Model Year (“MY”) vehicles (with engines M176, M177, M178) 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 In the affected vehicles, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp (‘MIL’) to illuminate.

  Associated Products (28)

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  Associated Documents

  • DownloadMC-11013884-0001.pdf↗
• January 29, 2025•Document ID: 11013190

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-077250

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint For the potentially affected vehicles, excessively high aging of the battery was calculated at cold battery temperatures (<50°F) and the MIL activated accordingly, even though there is no corresponding high level of aging physically. In this regard, the fault code P0A7F00 "The age limit of the hybrid/high-voltage battery module has been reached" is displayed in the N127 PTCU control unit and/or A66 battery module control unit (48 V battery). Cause Faulty computation of the age limit of the 48 V battery. Remedy Do not replace any parts!! Step 1: Perform the software update of A66 battery module (48 V battery) After SW has been updated, perform the following reset procedure: Step 1: Read the State of Health Resistance - (SOH-R) Step 2: If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Drive for a duration of 60 minutes to retrain the SOH-R value. Step 3: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Park vehicle in Workshop for >12 hours in warm ambient temperature >60F, afterwards drive for a duration of 60 minutes. Step 4: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH-R is still >125%, open a TIPS case.

  Associated Products (12)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2024 Mercedes-Benz C-Class2024 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 S-Class2021 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11013190-0001.pdf↗
• January 28, 2025•Document ID: 11013183

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  LI33.20-P-078406

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles in the below FIN range. FIN range up to: Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Axle Half Shaft noise when changing direction - Front) LI33.30-P-056665 (Axle Half Shaft noise when changing direction - Rear) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). • NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range above): 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

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  Associated Documents

  • DownloadMC-11013183-0001.pdf↗
• January 27, 2025•Document ID: 11013331

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI20.10-P-076206

  Date Added:

  January 31, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Customer states that the CEL is lit in the instrument cluster Cause Debris in the coolant system Remedy Please refer to the specific repair instructions for the vehicle you are working on in the attachments section of this LI. Before beginning the flushing procedure, remove the thermostat and inspect it for debris. Pay close attention to the gap between the inner sleeve and the body of the thermostat. Then open a TIPS case and request the tool you will need. Document and upload pictures from the thermostat inspection along with a CUL and IQT. In your request include a contact name, phone number, and shipping address for the tool to be sent. Before the tool arrives: • Remove and replace the coolant expansion tank (reservoir) and the main radiator. • Without removing the components: flush the heater core and changeover valve (located in the right front wheel arch) in the opposite direction of flow until no debris remains. Once the tool arrives, proceed with flushing the vehicle per the instructions attached in this LI. A picture of the filter after each flush must be taken. If after the prescribed number of flushing attempts debris is still being collected in the filter, upload all the pictures to the TIPS case and wait for next steps. A scale of not-acceptable to acceptable debris level in the filter is in the attachments for you to make an assessment as well.

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  2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz GLA-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2020 Mercedes-Benz CLA-Class
  Associated Documents

  • DownloadMC-11013331-0001.pdf↗
• January 24, 2025•Document ID: 11013186

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  LI82.10-P-078070

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint - Digital light pop-up messages (warnings, notes, spotlight and dyn. low beam) appear in the instrument cluster (picture in attachment), even though the same digital light settings are stored in all MBUX profiles Note: The pop-up messages are intended to indicate different settings when changing MBUX profiles Cause - ECU software Remedy - Reset MBUX to manufacturer default settings. Software update available as of December 2024. - A26/17 - MBUX multimedia system (head unit)

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  2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class
  Associated Documents

  • DownloadMC-11013186-0001.pdf↗
• January 24, 2025•Document ID: 11013185

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI72.00-P-071544

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Paint damage on door paneling in area of door handle (see picture 1). Cause Alignment of door handle bearing bracket is not correct. Remedy 1. Paint the affected area of the door paneling using the spot repair procedure in accordance with the manufacturer's specifications. 2. Replace the door handle, ensuring that the door handle bearing bracket is installed correctly (see picture 2). Note: The optimized door handles are marked as shown in the illustration (see picture 3).

  Associated Products (23)

  2020 Mercedes-Benz AMG GT2020 Mercedes-Benz C-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz EQC-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz GLE-Class2019 Mercedes-Benz AMG GT2019 Mercedes-Benz C-Class2019 Mercedes-Benz E-Class2019 Mercedes-Benz GLC-Class2019 Mercedes-Benz GLE-Class2018 Mercedes-Benz C-Class2018 Mercedes-Benz E-Class2018 Mercedes-Benz GLC-Class2018 Mercedes-Benz GLE-Class2017 Mercedes-Benz C-Class2017 Mercedes-Benz E-Class2017 Mercedes-Benz GLC-Class2017 Mercedes-Benz GLE-Class2016 Mercedes-Benz C-Class+ 3 more
  Associated Documents

  • DownloadMC-11013185-0001.pdf↗
• January 24, 2025•Document ID: 11013184

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI68.10-P-070572

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noise from area of instrument panel Noise might occur in the following conditions: - At engine speeds of 1500 rpm to 2000 rpm. - In the speed range up to 45mph - Type of noise: "rattling" / "whirring" / "creaking" Cause Attachment points between strut on shock absorber tower and firewall. Remedy Proceed as described below: 1. Measure the current torque at the rear screws/bolts (strut to bulkhead) and document the result 2. Loosen screw/bolt and move vehicle forwards and backwards approx. 2-3 m (to remove tension) 3. Re-tighten screws/bolts to specified torque (35Nm +/-3.5Nm) 4. Perform test drive and if noise issue is rectified, OK => No further measures required. 5. If the noise complaint is still present after the test drive then measure and document the current torque at the front screws/bolts (strut to spring tower mounting console) 6. Re-tighten to the specified torque value (50Nm+/-5Nm) 7. Perform test drive and if noise issue is rectified, OK => No further measures required. 8. If the noise issue is still present after the test drive, then it is more than likely not related to the mounting of the struts on the body-in-white.

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  Associated Documents

  • DownloadMC-11013184-0001.pdf↗
• January 24, 2025•Document ID: 11013179

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  LI47.50-P-078804

  Date Added:

  January 28, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the tests contained in XENTRY must be carried out P046109 / P206609 / P13E600 • For these fault codes, the connector couplings/wiring harness routing must be checked for damage P206600 / P046100 Cause Various Remedy Carry out XENTRY tests for the listed fault codes in the FSCM (N118) and document the monitor graphics for the primary/ secondary lever-type sensors.

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  2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLC-Class+ 37 more
  Associated Documents

  • DownloadMC-11013179-0001.pdf↗
• January 24, 2025•Document ID: 11013177

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI07.70-P-078520

  Date Added:

  January 28, 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 C300, CLE300, E350, Model year 2024-2025 GLC300 and GLE350 -Check engine control unit N3/10 for software update. -Proceed with software update if versions 2549032303, 2549032403, 2549032503 or 2549032603 are found. -Clear faults and check for any symptoms on road test 2023 GLC300 and early 2024 GLE350 Check if symptom can be reproduced during normal drive cycle. -If reproducible, diagnose the cause of low pressure in fuel system. -If not reproducible, drain and refill fuel tank with top tier premium gasoline. Clear faults and check vehicle operation. Software solution release for remaining models/model years to prevent fuel boiling in low pressure system ETA in Q1 2025. **Do not replace parts unless clear part malfunction is determined**

  Associated Products (5)

  2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLE-Class2023 Mercedes-Benz C-Class2022 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11013177-0001.pdf↗
• January 24, 2025•Document ID: 11013192

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI88.60-P-072093

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Fuel door may require several attempts to open. Please note that if the complaint "Fuel filler flap not opening" occurs, it is important to check the fuel filler flap before replacing the central locking actuator. For gasoline hybrid vehicles where the fuel filler flap fails to open or does so but slowly, observe the document "Fuel filler flap fails to open or does so but slowly on plug-in HYBRID gasoline vehicles"! Cause Central locking actuator may have an electrical fault and may not open. Remedy 1. Car locked: To rule out incorrect operation, operate the fuel filler flap in the area shown in Fig. 1 and listen out for the clicking noise of the microswitch in the central locking actuator. If no clicking can be heard, continue with point 4. 2. Car unlocked: Press area on flap to start the microswitch clicking. Flap opens - show the customer the area to press. 3. Car unlocked: Flap cannot be opened regardless of which area you press. Open the flap by operating the emergency release for the CL actuator (through trunk, fender gap cover, etc, depending on specific vehicle) 4. Central locking actuator pressed directly, no clicking of microswitch, no electrical release of central locking actuator => Clicking of microswitch, electrical release of central locking actuator => Tank filler recess/charging recess not OK; report results via a TIPS case to B/C/E Inbox. 5. Replace central locking actuator; check function of new part before installing it: Do not dispose of damaged part. New central locking actuator does not release: More detailed examination of connector coupling, wiring harness, electrics required.

  Associated Products (113)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-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 GLB-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLA-Class+ 93 more
  Associated Documents

  • DownloadMC-11013192-0001.pdf↗
• January 23, 2025•Document ID: 11013347

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI72.10-P-062500

  Date Added:

  January 31, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Wind or airflow noises in the area of the doors Cause Airflow noises or tire noise. The noises entering the interior may be perceived as too loud. Remedy MODEL 205/0/1/2 1. Check door adjustment. Also check the transition from the doors to the A-pillar, see Figure 1, and correct if necessary by adjusting the doors in the y-direction. 2. Check outside mirror cover for parallelism and correct seating, see Figure 2, and adjust if necessary. 3. Check rib on mirror triangle seal for kinks as per arrows, see Figure 3, and replace if necessary. 4. Cut insulation to a length of 30 mm and attach to waistline trim strip at front on left and right according to the circles, see Figure 3 and Figure 4. 5. Perform a test drive. If the noise level is unchanged, continue with step 6. MODEL 205.0/1/2, 253.9 6. Using suitable adhesive tape, cover the joints in the area of the front doors, outside mirrors, windshield and engine hood, see example in Figure 5, Figure 6 and Figure 7. Perform a test drive. 7. If the noise level is unchanged, install front side windows with code 851 (Acoustics package). Note: Document conversion of front side windows in VeDoc in FO Texts field.

  Associated Products (8)

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

  • DownloadMC-11013347-0001.pdf↗
• January 19, 2025•Document ID: 11013079

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.00-P-073532

  Date Added:

  January 24, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint If TRANSMISSION 725.1 (9G TRONIC FACELIFT) exhibits any "shift quality" problem symptoms, various optimized diagnosis procedures are available to you for selected vehicle model series with STAR3 architecture, Cause Various Remedy Despite this, the problem shift mechanism should be verified with XENTRY in the presence of the customer as a preparatory measure. In event of shift quality problems, before the start of any repair or standard adaptation, the latest quick test, the transmission control unit log and the EEPROM data should be read out as a txt file (*.txt). The EEPROM data must be stored separately on a data medium (USB stick) as it can no longer be reproduced after adaptation has been performed. Before creating a TIPS case always check that the engine and transmission control unit as well as the dependent powertrain control units (e.g. CPC3, DCDC48EVO1, ISG48V2, LIB48_223) have the latest software release, and update them, if necessary, then perform another test drive. Note: The latest version of the XENTRY (including all available add-ons) must be used for programming the transmission and engine control unit. Only then can it be ensured that the very latest version of each software is installed. If the problem still persists, the creation of a CAN-FD measurement (successor to SD-SCAN for vehicles with STAR3) may be necessary, when requested. For this, the parts specified in the parts scope and the corresponding XENTRY versions / add-ons are required: • W000589002100 Test box 1 • W223589016300 Adapter cable for vehicles with STAR3 • XENTRY 03/2021 with add-on 19516 • XENTRY 06/2021 with add-on 19604 • XENTRY 09/2021

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  2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz GLS-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLE-Class2021 Mercedes-Benz GLS-Class2021 Mercedes-Benz S-Class2020 Mercedes-Benz CLS-Class+ 6 more
  Associated Documents

  • DownloadMC-11013079-0001.pdf↗
• January 18, 2025•Document ID: 11013077

  Service Bulletin/Repair Instructions
  ENGINE; FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  LI07.70-P-078520

  Date Added:

  January 24, 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 Model year 2024-2025 GLC300 and GLE350 -Check engine control unit N3/10 for software update. -Proceed with software update if versions 2549032503 or 2549032603 are found. -Clear faults and check for any symptoms on road test For all other models or if software is not found in above steps Check if symptom can be reproduced during normal drive cycle. -If reproducible, diagnose the cause of low pressure in fuel system. -If not reproducible, drain and refill fuel tank with top tier premium gasoline. Clear faults and check vehicle operation. Software solution release for remaining models/model years to prevent fuel boiling in low pressure system ETA in Q1 2025. **Do not replace parts unless clear part malfunction is determined**

  Associated Products (7)

  2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2023 Mercedes-Benz C-Class2022 Mercedes-Benz C-Class
  Associated Documents

  • DownloadMC-11013077-0001.pdf↗
• January 18, 2025•Document ID: 11013081

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  LI42.10-P-063502

  Date Added:

  January 24, 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, apart from this document, an additional document exists for the model series in question, and if so, work through it and then continue with1b. b) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). c) Check the affected system for component wear, mechanical damage or localized overheating damage. 1. Replace damaged components as necessary and re-assess noise concern. 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) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). 2. Specific Axle Work: NOTE: If 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. For 6 piston calipers, only in the area of the center piston. For other piston caliper configurations less than 6, apply where the piston(s) makes contact with the back of the pad. 4. 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. 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) 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. d) Finally drive approx. 3 miles to allow the system to cool. e) Reassess noise.

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  Associated Documents

  • DownloadMC-11013081-0001.pdf↗
• January 17, 2025•Document ID: 11013091

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI01.20-P-076894

  Date Added:

  January 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. ALL model year 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. 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-11013091-0001.pdf↗
• January 17, 2025•Document ID: 11013175

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI07.61-P-070707

  Date Added:

  January 28, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly and/or a loss of power. Cause Multiple Causes Remedy Please see the document "Remedy Instructions" in attachments. For MY19-24 G63 there may be an alternate solution available, please reference LI07.61-P-076755 before performing the steps in this LI for MY19-24 G63 vehicles.

  Associated Products (57)

  2024 Mercedes-Benz AMG GT2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz AMG GT2023 Mercedes-Benz 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 E-Class2022 Mercedes-Benz G-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz GLS-Class2022 Mercedes-Benz S-Class+ 37 more
  Associated Documents

  • DownloadMC-11013175-0001.pdf↗
• January 16, 2025•Document ID: 11013298

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI33.30-P-056665

  Date Added:

  January 31, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to micromovement in the connection between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened and must be tightened to the specified torque. Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove outboard side shafts (extract outer joint gearing from wheel hub) 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") using Molykote and leave to dry for one hour in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

  Associated Products (174)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class+ 154 more
  Associated Documents

  • DownloadMC-11013298-0001.pdf↗
• January 16, 2025•Document ID: 11012904

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  LI42.10-P-063502

  Date Added:

  January 16, 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, apart from this document, an additional document exists for the model series in question, and if so, work through it. b) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). c) Check the affected system for component wear, mechanical damage or localized overheating damage. 1. Replace damaged components as necessary and re-assess noise concern. 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) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). 2. Specific Axle Work: a) If the noises are coming from the front axle => Affix linings with adhesive film (see attachments for front axle). 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. For 6 piston calipers, only in the area of the center piston. For other piston caliper configurations less than 6, apply where the piston(s) makes contact with the back of the pad. 4. 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. 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) 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. d) Finally drive approx. 3 miles to allow the system to cool. e) Reassess noise.

  Associated Products (150)

  2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz AMG GT2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLA-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 CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz G-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class+ 130 more
  Associated Documents

  • DownloadMC-11012904-0001.pdf↗
• January 15, 2025•Document ID: 11013332

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI35.30-P-058566

  Date Added:

  January 31, 2025

  Manufacturer:

  MERCEDES BENZ

  Summary

  Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

  Associated Products (158)

  2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz C-Class2024 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 CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class+ 138 more
  Associated Documents

  • DownloadMC-11013332-0001.pdf↗
• January 15, 2025•Document ID: 11013187

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-076200

  Date Added:

  January 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Station logos are no longer displayed in the radio after updating or SCN coding the A26/17 head unit. Cause Without active navigation (code 365), MBUX cannot assign and install the regional database of the station logos. Remedy There is no remedy available. The function is not supported and therefore considered normal operation.

  Associated Products (17)

  2025 Mercedes-Benz GLC-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz S-Class2020 Mercedes-Benz A-Class2019 Mercedes-Benz A-Class
  Associated Documents

  • DownloadMC-11013187-0001.pdf↗