Mercedes-Benz C-Class Service Bulletins (2023)
421 manufacturer communications on file.
- October 12, 2023•Document ID: 10244735Service Bulletin/Repair InstructionsSUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION
- Mfr Comm. #:
- LI32.25-P-076956
- Date Added:
- November 2, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryWheezing noises from the front shock absorbers when passing over surface undulations and rough road. The noises may become more conspicuous with warm damper oil. The flow noises of the damper oil are currently being analyzed. The wheezing noises are currently considered standard for the series. Replacing the shock absorbers will yield no benefit and will not remedy the problem. Please report complaints regarding these wheezing noises via TIPS.
Associated Products (17)2024 Mercedes-Benz C-Class2024 Mercedes-Benz E-Class2024 Mercedes-Benz GLC-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLE2023 Mercedes-Benz E-Class2023 Mercedes-Benz GLC-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz GLC-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz GLC-Class2016 Mercedes-Benz CLEAssociated Documents - September 8, 2023•Document ID: 10243306Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- Ll54.10-P-076896
- Date Added:
- October 2, 2023
- Manufacturer:
- MERCEDES-BENZ
Summary12V message in IC when starting the vehicle. SW updates need to be performed. Follow the guided test for FC U116000 in N73/3*1 EIS CU. Perform the SW checks and updates. Fully charge both 12V and 48V batteries. After, perform a few drive/park cycles with at least 1 overnight park cycle. If the 12V message is no longer present, release the vehicle.
Associated Products (12)2024 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 C-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz S-ClassAssociated Documents - August 28, 2023•Document ID: 10241527Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE
- Mfr Comm. #:
- NCU-HU SW Update
- Date Added:
- September 1, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. The update will show after the ignition has been cycled. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customerâs vehicle. The OTA may be validated as successful on the customerâs Mercedes Me connect app under âOver-the-Air Vehicle Updatesâ as âUpdate for the communication moduleâ. If the OTA is successful it will show a green âinstalledâ and date of installation in the Over-the-Air update section.
Associated Products (82)2023 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 GLB-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz GLS-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz G-Class+ 62 moreAssociated Documents - August 22, 2023•Document ID: 10241510Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- Ll54.10-P-076823
- Date Added:
- September 1, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryIn the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may sporadically be displayed. As a consequence of this, the fault codes B 1 FCB97 (=> N73/3) and U 116000 (=> N73/3*1) are stored in the fault memory. In the subsequent analysis of the 12 Von-board electrical system data, the following parameters are conspicuous (see picture 1 in the attachment): ⢠Charge balance negative when stationary. ⢠Interior CAN bus is awake for an unusually long time. ⢠12 V battery SOC (state of charge) during subsequent engine start is 45% or less. NOTE: Once the 12 V battery SOC has exceeded 50% for the first time, the symbol and the message in the instrument cluster disappear again. The door control unit (N69/x) may sporadically keep the interior CAN bus awake. NOTE: Exclusively door control units with the HW item numbers A2239019917 and A2239010018 can be affected. Open a TIPS case and include the following: 1. Initial Quick Test 2. N73/3 EZS CUL 3. N73/3*1 EZS CUL 4. Date and time of occurrence
Associated Products (5)Associated Documents - August 21, 2023•Document ID: 10241536Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT
- Mfr Comm. #:
- LI82.70-P-076832
- Date Added:
- September 1, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryPhone call log is not shown in the MBUX display. If the telephone connects with the head unit again, the call log may not be sent. Current software release for the A26/17 - MBUX multimedia system (Head unit) Currently there is no remedy available. Replacing the hardware will not resolve the symptom. ⢠New software for the A26/17 - MBUX multimedia system (Head unit) will be made available with software version E444.x (scheduled for Q4/2023)
Associated Products (18)2024 Mercedes-Benz AMG GT2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLC-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class2024 Mercedes-Benz S-Class2024 Mercedes-Benz SL-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz S-Class2023 Mercedes-Benz SL-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz S-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz S-ClassAssociated Documents - August 18, 2023•Document ID: 10241519Service Bulletin/Repair InstructionsSEATS
- Mfr Comm. #:
- LI91.10-P-076798
- Date Added:
- September 1, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryNoise at front seats between seat-back lining and function carrier. Noise is caused by friction of the two component parts. Remove the seat-back lining (back panel) of the front seat concerned using a special tool. Via adhesive bonding, affix 2 pieces of felt at the lower seat backrest structure (see pic. 1). Via adhesive bonding, affix 2 pieces of felt in the upper area of the seat backrest at the function carrier (see pic. 2). Pic. 3 shows the function carrier from behind: Begin applying the adhesive bonding of the felt at the edge (see red arrow). Ensure that the adhesive bonding is applied in the center. Then fold the felt forward. Pic. 4 shows the function carrier from the front: Continue to apply the adhesive bonding to the forward fold. Ensure that the adhesive bonding is applied in the center.
Associated Products (6)Associated Documents - August 18, 2023•Document ID: 10241515Service Bulletin/Repair InstructionsLATCHES/LOCKS/LINKAGES; STRUCTURE; STRUCTURE:BODY:TAILGATE
- Mfr Comm. #:
- LI72.20-P-075232
- Date Added:
- September 1, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryWhen operating a control point to open the trunk lid or the tailgate, the trunk lock unlocks, but there is no actuation of the trunk control/tailgate control drive unit (M51/3). Faulty microswitch signal of trunk lock. In the event of a problem, the status of the trunk lock (picture 1) does not change during opening/closing of the trunk lid or tailgate. The function of the interior trunk release is not affected. Replace trunk lock (A85/5).
Associated Products (8)Associated Documents - July 25, 2023•Document ID: 10240164Service Bulletin/Repair InstructionsSTRUCTURE; VISIBILITY:SUN/MOON ROOF ASSEMBLY
- Mfr Comm. #:
- LI77.21-P-074971
- Date Added:
- August 2, 2023
- Manufacturer:
- MERCEDES-BENZ
SummarySliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, multiple times) during closing process without entrapment event. It is not possible to save the relearning process for force progression after each actuation. A, e.g. mechanical sluggishness caused by aging cannot be compensated for here. The teach-in process does not properly save after each actuation. Note: Conditions such as slow operation of the sunroof due to aging of mechanical components cannot be compensated for during this process. Perform SCN Coding of panoramic roof control unit (PSD, A98, TSSR223).
Associated Products (2)Associated Documents - July 19, 2023•Document ID: 10240250Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- NCU - HU Update
- Date Added:
- August 2, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-2024 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the head unit software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customerâs vehicle. The OTA may be validated as successful on the customerâs Mercedes Me connect app under âOver-the-Air Vehicle Updatesâ as either âSoftware Update MBUX 2.4â or âSoftware Update Hermes 1.5 E522.8â. If the OTA is successful it will show a green âinstalledâ and date of installation in the Over-the-Air update section.
Associated Products (12)2023 Mercedes-Benz C-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz GLE-Class2021 Mercedes-Benz S-ClassAssociated Documents - July 7, 2023•Document ID: 10240173Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING; POWER TRAIN
- Mfr Comm. #:
- LI01.00-P-076642
- Date Added:
- August 2, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryDull thumping noise or ticking noise under the vehicle in the area of the engine/two-mass flywheel/transmission. Is also faintly audible in the vehicle interior.
Associated Products (2)Associated Documents - June 30, 2023•Document ID: 10238429Service Bulletin/Repair InstructionsSUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY; SUSPENSION
- Mfr Comm. #:
- NCU-2023060008
- Date Added:
- July 3, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (âMYâ) 2023 C-Class (206 platform) vehicles, the adhesive seam on the cross-member in the rear area does not correspond to current specifications. As a result, noise may occur in the rear area of the vehicle while driving and the body may be subjected to greater stress in this area.
Associated Products (2)Associated Documents - June 28, 2023•Document ID: 10238414Service Bulletin/Repair InstructionsSTRUCTURE; LATCHES/LOCKS/LINKAGES
- Mfr Comm. #:
- LI72.10-P-076610
- Date Added:
- July 3, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryLeft and/or right front door could scuff or jamb when opening/closing in the rear upper area at the B-pillar cover of the rear doors, see picture 1 Grub screw of upper hinge of left and/or right front door is loose. 1. Remove the grub screw. 2. Apply thread locking agent to the thread of the grub screw. 3. Install the grub screw and tighten with 23 Nm.
Associated Products (2)Associated Documents - May 19, 2023•Document ID: 10237265Service Bulletin/Repair InstructionsFORWARD COLLISION AVOIDANCE; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM
- Mfr Comm. #:
- NCU-2023040017
- Date Added:
- June 5, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 C-Class, EQS and S-Class (206, 297 and 223 platform) vehicles, the driving assistance system control unit software does not meet current specifications. In the presence of uniquely shaped civil superstructures that parallel the roadway at a height of~26-33 feet (e.g. large overhanging bridge abutments, etc.), the vehicle may initiate brake applications during operation. In such cases, the driver remains in control of the vehicle and can override the system at any time. What Weâre Doing An authorized Mercedes-Benz dealer will update the driving assistance system control unit software.
Associated Products (5)Associated Documents - April 19, 2023•Document ID: 10235670Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.85-P-076200
- Date Added:
- May 4, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Station logos are no longer displayed in the radio after updating or SCN coding the A26/17 head unit. Cause Under analysis. Remedy Currently, there is no remedy available. Please open a TIPS case for support.
Associated Products (3)Associated Documents - April 12, 2023•Document ID: 10235666Service Bulletin/Repair InstructionsSTRUCTURE
- Mfr Comm. #:
- LI72.12-P-076175
- Date Added:
- May 4, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Seal, weather trim strip on rear doors detaching in upper area, see picture 1. Cause Production deviation at supplier of weather trim strip. Remedy Replace weather trim strip through optimized parts.
Associated Products (1)Associated Documents - April 11, 2023•Document ID: 10235669Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.85-P-076157
- Date Added:
- May 4, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Brief connectivity interruptions when using Apple CarPlay over Wi-Fi, for example when driving underneath toll bridges. Cause There may be interruptions to WiFi as a result of external interference. This is particularly observed around toll bridges. Remedy There is currently no remedy and replacing hardware does not resolve the problem. An alternative option would be to use Apple CarPlay wired. In the FUP4 variant of the head unit software (Q1/2024), stability improvements have been made to the Wi-Fi connection.
Associated Products (8)Associated Documents - April 4, 2023•Document ID: 10235671Service Bulletin/Repair InstructionsSEATS
- Mfr Comm. #:
- LI91.10-P-076097
- Date Added:
- May 4, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Play/noise at seat height adjuster or in seat guide rail on front seats Cause Tolerances and variations in the manufacturing process Remedy Review the barcode adhesive label on cross brace pipe of seat height adjuster. (see attachment). The seat frame base with the seat height adjuster motor can be replaced if the production status is smaller than E101 (pic.1: seat label) If the production status is equal to or greater than E101, please create a TIPS case with video.
Associated Products (2)Associated Documents - March 15, 2023•Document ID: 10233788Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING
- Mfr Comm. #:
- LI54.21-P-076055
- Date Added:
- April 5, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Check engine light activated Fault codes stored in AMG Drive Unit N145/1 (DRVU3) B1F9713 U015400 U188D00 Cause Timing variance on wakeup of ethernet control units Remedy A solution is in development for listed faults in AMG drive unit (DRVU3). Clear fault codes and perform 2 drive cycles allowing vehicle to sleep in between drives. If no fault codes or malfunctions occur, the vehicle can be released to the owner. Note: These fault codes will not lead to other malfunctions or damage to the vehicle.
Associated Products (2)Associated Documents - March 8, 2023•Document ID: 10233785Service Bulletin/Repair InstructionsEQUIPMENT
- Mfr Comm. #:
- LI47.70-P-076030
- Date Added:
- April 5, 2023
- Manufacturer:
- MERCEDES-MAYBACH
SummaryComplaint After the charging process is complete, the IC message with charging error appears and the FC P0CFE00 is stored in the "N83 - AC charger for high-voltage battery (SG-LG)" control unit. The fault message and the fault memory entry can also appear during time-delayed charging at the start of the pause in charging. Both only occur in combination with active pre-entry climate control. Cause Software in the "N83 - AC charger for high-voltage battery (SG-LG)" control unit. Remedy Perform SCN coding in control unit "N83 - AC charger for high-voltage battery (SG-LG)".
Associated Products (3)Associated Documents - March 1, 2023•Document ID: 10233791Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.70-P-075967
- Date Added:
- April 5, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Wireless charging start/charging behavior of iPhone 14 is not optimal Cause Change in iPhone software (iOS) Remedy There will be optimized software for iPhone 14 iOS (target date 05/2023). This LI will be updated when the software becomes available. A software update with currently available iOS software will not be effective for the iPhone 14.
Associated Products (5)Associated Documents