Mercedes-Benz A-Class Service Bulletins (2020)

274 manufacturer communications on file.

• 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)

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  Associated Documents

  • DownloadMC-11013298-0001.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.

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  Associated Documents

  • DownloadMC-11013187-0001.pdf↗
• January 15, 2025•Document ID: 11013086

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-066284

  Date Added:

  January 24, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The reversing camera or the 360° system functions normally when activated manually or by engaging drive range "R". Cause This is not a malfunction, but an intended system behavior. Calibration of the reversing camera is in progress. The calibration is completed by: • Opening the camera cover for a maximum of 5 cumulative minutes. • If the vehicle speed is < 35 km/h (<22 MPH). • The steering wheel angle is < 10°. If calibration is aborted by exceeding one of the above conditions, the camera retracts and the calibration will re-attempt once the conditions are achieved and the speed returns to the range of 18 km/h (~11 MPH). Remedy SCN code PARK213M on MFA2 facelift vehicles produced after 09/2024 (A-Class, CLA, GLA, etc...) so the complete calibration speed window is available. For vehicles with PARK213M or PARK223 a calibration is completed successfully by: • Driving forward (typically less than 1 minute). • Vehicle speed is < 35 km/h (<22 MPH). • The steering wheel angle is < 10°. • During daylight. • Without a vehicle following too closely (camera must be able to see asphalt). When calibration has completed successfully, the camera door closes automatically for the rest of the driving cycle. The camera will now only open if the customer requests (Example: Engaging reverse gear). The calibration of the camera will re-initiate every drive cycle (ignition change). The customer can generally perform calibration at the first attempt while briefly maintaining a speed range of 15 km/h (~9 MPH) and 35 km/h (~22 MPH). The customer can therefore play a significant role in reducing the camera door noise and actuation frequency.

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  Associated Documents

  • DownloadMC-11013086-0001.pdf↗
• January 9, 2025•Document ID: 11012803

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  LI32.25-P-070053

  Date Added:

  January 10, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint There may be creaking noises when steering while stationary or driving slowly. See Example Noise attachment Cause The vehicle level of the front axle may be too low. The noises when steering can be caused by continuous contact of the end stop buffer with the damper tube. Remedy The vehicle level must first be measured using the romess inclinometer (follow WIS instructions!) and the measured values should be compared with the target values in the Wheel Alignment online tool. If the vehicle level is out of tolerance, then the springs on the front axle must be replaced in order to correct the level. The currently installed springs can be pulled up in the XENTRY Parts Information tool through the corresponding selection. Verify currently installed spring in vehicle with use of color dots. NOTE: If no dots or color markings, please check the parts label that is affixed to the spring. If the MB part number is listed, continue with process listed in the paragraph below. If the part label does not contain an MB part number, is missing or illegible, please open a TIPS case. In order to find the correct or next highest spring, the spring filter must be removed in the XENTRY Parts Information tool.

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  Associated Documents

  • DownloadMC-11012803-0001.pdf↗
• January 9, 2025•Document ID: 11012789

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING; VISIBILITY/WIPER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-078762

  Date Added:

  January 10, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Please note that the exact quick test conditions must be met as seen below. If not exactly as listed below, there is no need to create a TIPS case referencing this LI unless further assistance is needed outside of this document. Conditions Instrument Cluster Message: "Park Assist Inoperative" and B223263 with Bosch-ID C259; A+S (Active and Stored) and B223255 with Bosch-ID 1B5D; A+S (Active and Stored) Notes: • Other DTC's are permitted but the above three conditions must be met. • See Attachment for an example of Bosch ID location. • Attachment portrays a quick test with non-matching criteria and therefore does not require a TIPS case. Cause Under analysis. Remedy Please do not make any attempts to repair the park control unit. Do not flash or SCN code. Open a TIPS case.

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  Associated Documents

  • DownloadMC-11012789-0001.pdf↗
• January 6, 2025•Document ID: 11012806

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; LANE DEPARTURE: ASSIST

  Mfr Comm. #:

  LI46.10-P-078012

  Date Added:

  January 10, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case.

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  Associated Documents

  • DownloadMC-11012806-0001.pdf↗
• January 3, 2025•Document ID: 11012787

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078722

  Date Added:

  January 10, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The vehicle's position on the map is displayed far away from its actual position, e.g. the vehicle is displayed as being in the middle of the ocean. Note: In the quick test, no relevant DTC is displayed for this. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the connector into the GNSS connection and ensure that the connector has engaged correctly and is fully seated.

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  Associated Documents

  • DownloadMC-11012787-0001.pdf↗
• December 21, 2024•Document ID: 11012061

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI32.25-P-070053

  Date Added:

  December 24, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint There may be creaking noises when steering while stationary or driving slowly. See Example Noise attachment Cause The vehicle level of the front axle may be too low. The noises when steering can be caused by continuous contact of the end stop buffer with the damper tube. Remedy The vehicle level must first be measured using the romess inclinometer (follow WIS instructions!) and the measured values should be compared with the target values in the Wheel Alignment online tool. If the vehicle level is out of tolerance, then the springs on the front axle must be replaced in order to correct the level. The currently installed springs can be pulled up in the XENTRY Parts Information tool through the corresponding selection. Verify currently installed spring in vehicle with use of color dots. NOTE: If no dots or color markings, please check the parts label that is affixed to the spring. If the MB part number is listed, continue with process listed in the paragraph below. If the part label does not contain an MB part number, is missing or illegible, please open a TIPS case. In order to find the correct or next highest spring, the spring filter must be removed in the XENTRY Parts Information tool. The spring item numbers are normally listed in sequence (observe and verify valid SA code for vehicle). The next strongest spring is selected by the ascending, next highest item number. IMPORTANT: Do not apply document to vehicles outside of the listed validity range.

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  Associated Documents

  • DownloadMC-11012061-0001.pdf↗
• December 6, 2024•Document ID: 11011767

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-068986

  Date Added:

  December 11, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint <p> After a software update, the MBUX multimedia system (A26/17) may incorrectly display the fault code B19C804 "Software tampering has been detected. There is an internal fault". </p> <p> </p> <p> Note: If there are no relevant customer complaints, then the DTC can be ignored as it does not directly affect functionality. If there is a customer complaint in addition to the above DTC, further diagnostic measures must be performed. </p> Cause The current software release of the MBUX multimedia system (A26/17) Remedy <p>Update the A26/17 to newest available software release.</p><p> </p><p>Note: Do not replace any parts.</p>

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  Associated Documents

  • DownloadMC-11011767-0001.pdf↗
• December 4, 2024•Document ID: 11011544

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.30-P-078649

  Date Added:

  December 6, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Symptoms with driver display and/or central display Cause Under analysis Remedy NOTE: Please do not replace any parts. If you have symptoms with one or both displays, a TIPS case must be created. The TIPS case will be reviewed by MBUSA and GCSP. NOTE: Please perform the following steps before creating a TIPS case: Step 1: Check software release of the following control units to see if they are up to date; if necessary perform software update. • Instrument cluster (IC177 / IC 177M) • Head unit (HU6 / HU7) • All displays (DISP6 / DISP7S2) Reassess problem. If the problem is still present, continue with step 2. Step 2: Perform swap (swap display with a display from a reference vehicle) and reassess problem. If the problem relates to the display, replace display. If the problem does not relate to the display, continue with step 3. Step 3: Check electrical wiring harness and video line for routing, breakovers and external damage. Check contact springs and contact sockets for corrosion and bonding (photo documentation in micro view). Check electric wiring harness for conductivity and short circuit, document measurement results in a measurement report or referenced wiring diagram using the CDT four level model. If the wiring harness and the video line is OK, please complete the attached questionnaire, create TIPS case according to list of requirements. Please add the following documents to the TIPS case: • Video of problem • Completed questionnaire • Current quick test with freeze frame results • Measurement report and photo documentation of wiring harness • Control unit log of head unit • Control unit log of instrument cluster • Control unit log of display cluster • Log-files HU-logging (password via TIPS case) • NOTE: Make sure to document the original customer complaint. NOTE: Please refer to this LI in the warranty claim in the "Notes" section. The damage code of the component determined to be the root cause of the symptom must be used in the warranty claim.

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  Associated Documents

  • DownloadMC-11011544-0001.pdf↗
• December 3, 2024•Document ID: 11011553

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI82.62-P-078631

  Date Added:

  December 6, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Note: Please refer to this document in the warranty claim and, once diagnosis is completed, select the damage code depending on the component part that is causing the issue. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10-P-067691. Note: In this case, do not use the damage codes for the speakers in the warranty claim.

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  Associated Documents

  • DownloadMC-11011553-0001.pdf↗
• November 25, 2024•Document ID: 11010907

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-066284

  Date Added:

  December 2, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The flap of the reversing camera opens and closes by itself during forward travel. This happens several times during the trip. The customer notices the sound of opening and closing. No camera image is displayed in the head unit. The reversing camera or the 360° system functions normally when activated manually or by engaging drive range "R". This behavior occurs again during each driving cycle. Cause This is not a malfunction, but an intended system behavior: Calibration of the reversing camera is in progress. For this, the cover on the camera is opened for max. 5 cumulative minutes in forward travel. The calibration can be performed if the vehicle speed is < 35 km/h and the steering wheel angle is < 10° (for early vehicles from MFA2 facelift model series such as A-Class, CLA, etc., the 35 km/h (~22 MPH) opening limit may only be reached after the SCN coding is replaced). If the speed of 35 km/h (~22 MPH) is exceeded, the camera retracts and the calibration is therefore aborted. The sequence is started again once the speed returns to the range of 18 km/h (~11 MPH). Remedy Complete the calibration successfully. For this, the vehicle must be driven forwards for a certain time (usually significantly less than one minute) at a speed < 35 km/h (~22 MPH) and a steering wheel angle < 10°. This should occur during daylight and without a vehicle following too closely (the camera must be able to see the asphalt). When calibration is successful, the camera flap closes automatically at an unchanged speed. For the rest of the driving cycle, the camera now only opens if the customer requests this, for example by applying the reverse gear. When starting a new driving cycle (ignition change), another calibration is required. The customer can generally perform calibration at the first attempt when a speed in the range between 15 km/h (~9 MPH) and 35 km/h (~22 MPH) is briefly maintained and can therefore play a significant role in reducing the actuation frequency and therefore also the noticeability of the noise to a minimum. In the case of early MFA2 facelift vehicles (A-Class, CLA, etc.), the parking control unit may have to be SCN-coded again to have the complete speed window available for the calibration.

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  Associated Documents

  • DownloadMC-11010907-0001.pdf↗
• November 20, 2024•Document ID: 11010818

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  LI27.19-P-072588

  Date Added:

  November 27, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy It is important that LI54.15-P-057373 is processed before replacing any component parts (transmission 722.9). After processing and complying with the above documents, perform a reset on the transmission control unit Y3/8n4 (VGS) (ignition reset), check that the transmission connector is seated correctly and inspect the PINs for concerns. If communication with the VGS cannot be established afterwards, the component part 'electrohydraulic controller unit (EHS)' must be replaced, as it is not possible to transfer the valve characteristics under the above-mentioned conditions. Installation of a VGS repair kit is not permitted in this case.

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  • DownloadMC-11010818-0001.pdf↗
• November 20, 2024•Document ID: 11010755

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.85-P-078473

  Date Added:

  November 23, 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-11010755-0001.pdf↗
• November 4, 2024•Document ID: 11010438

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI80.50-P-077350

  Date Added:

  November 12, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Customer complains about anti-theft alarm system triggering without obvious cause when the vehicle is parked and/or when entering the vehicle. All MFA2 and 167 derivates with code 882 may be affected. Cause This is caused by a sporadic loss of communication to the anti-theft alarm system [N26/6]. In many instances there are one or more FCs U110D87, U001988, U016787 stored in the control units anti-theft alarm system [N26/6] and/or signal acquisition and actuation module [N10] / [N10/6]. The alarm system memory may contain several alarm sources. Remedy Please process all following points in succession: 1. Check - Power supply of the overhead control panel [N70] - Ground points of the overhead control panel [N70] • Model series 118, 177, 247: W78 • Model series 167: W15/2 • Model series 243: W78/2 - LIN lines between overhead control panel [N70] and alarm siren [H3/1] - CAN lines between overhead control panel [N70] and signal acquisition and actuation module [N10] or [N10/6] 2. Open TIPS case for vehicles from production date 01.06.2023 (Send to Body/Chassis/Entertainment Inbox) - Attach photo of overhead control panel label (see example images) - Add control unit log of anti-theft alarm system [N26/6] - Add alarm history of anti-theft alarm system [N26/6], alarm siren [H3/1] and front signal acquisition and actuation module [N10/6] 3. Remedy for vehicles prior to production date 01.06.2023 - If the problem cannot be reproduced, the overhead control panel [N70] (anti-theft alarm system [N26/6] is integrated) must be replaced.

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  2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class+ 14 more
  Associated Documents

  • DownloadMC-11010438-0001.pdf↗
• October 29, 2024•Document ID: 11009549

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI80.50-P-077350

  Date Added:

  November 1, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Customer complains about anti-theft alarm system triggering without obvious cause when the vehicle is parked and/or when entering the vehicle. All MFA2 and 167 derivates with code 882 may be affected. Cause This is caused by a sporadic loss of communication to the anti-theft alarm system [N26/6]. In many instances there are one or more FCs U110D87, U001988, U016787 stored in the control units anti-theft alarm system [N26/6] and/or signal acquisition and actuation module [N10] / [N10/6]. The alarm system memory may contain several alarm sources. Remedy Please process all following points in succession: 1. Check - Power supply of the overhead control panel [N70] - Ground points of the overhead control panel [N70] • Model series 118, 177, 247: W78 • Model series 167: W15/2 • Model series 243: W78/2 - LIN lines between overhead control panel [N70] and alarm siren [H3/1] - CAN lines between overhead control panel [N70] and signal acquisition and actuation module [N10] or [N10/6] 2. Open TIPS case for vehicles from production date 6/1/2023 - Attach photo of overhead control panel label (see example images) - Add control unit log of anti-theft alarm system [N26/6] - Add alarm history of anti-theft alarm system [N26/6], alarm siren [H3/1] and front signal acquisition and actuation module [N10/6] 3. Remedy for vehicles prior to production date 6/1/2023 - If the problem cannot be reproduced, the overhead control panel [N70] (anti-theft alarm system [N26/6] is integrated) must be replaced.

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  2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLE-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class+ 14 more
  Associated Documents

  • DownloadMC-11009549-0001.pdf↗
• October 23, 2024•Document ID: 11009122

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; VISIBILITY/WIPER

  Mfr Comm. #:

  LI82.35-P-078467

  Date Added:

  October 25, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.

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  Associated Documents

  • DownloadMC-11009122-0001.pdf↗
• October 4, 2024•Document ID: 11008712

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI01.20-P-078446

  Date Added:

  October 8, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Check engine light on. One of the below fault codes is current in the engine control module (N3/10). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for the relevant vent line contact switch noted below. Refer to attached photos of connection locations. 2. Ensure the bolted connection is secure and bolt can be torqued (9Nm). 3. Check continuity from vent line connection to ME control unit. Repair wire if damage is found. • The circuit from ME provides 5V and is pulled to 0V when the ground connection is intact. M260 P04DB31- S88/15 P04DB79- S88/16 M264 P04DB31- S88/15 P04DB79- S88/16 P04DB29- S88/17 M270/M274 P04DB79- S88/5 Note: This repair is not warrantable if the connection was left loose during previous repair/maintenance.

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  Associated Documents

  • DownloadMC-11008712-0001.pdf↗
• 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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  2025 Mercedes-Benz GLA-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz G-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz G-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLE-Class+ 114 more
  Associated Documents

  • DownloadMC-11008880-0001.pdf↗
• September 28, 2024•Document ID: 11008093

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.60-P-077495

  Date Added:

  September 28, 2024

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint After clicking on the "Radio" selection function, the radio does not start and instead a permanent loading wheel is displayed. See attached picture for example. Cause Software version Remedy A26/17 - MBUX multimedia system (Head unit) unit must be replaced. When the head unit is in this condition, a software update will not remedy the situation. 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-11008093-0001.pdf↗