Mercedes-Benz EQB-Class Service Bulletins

172 manufacturer communications on file.

• October 29, 2025•Document ID: 11024545

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI22.10-P-079966

  Date Added:

  October 29, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noise during load change when driving Cause Tolerances in front left bearing of major assembly carrier (transmission mount) A 243 240 25 00 can cause the noise complaint. Remedy Replacing parts will have no useful effect. Remove affected bearing and coat with anti-seize agent A 000 989 36 60 (Krytox), as specified in pictures, and install bearing again.

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11024545-0001.pdf↗
• October 20, 2025•Document ID: 11024405

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  LI42.10-P-079904

  Date Added:

  October 21, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint At low speeds and light brake pressure, brakes will make a groaning or honking noise. Cause Frictional vibrations with very light brake pressure/modulations. Remedy This condition can be duplicated on most vehicles. To validate, use a like for like reference vehicle. The noise is normal behavior under the conditions listed. With very light brake pressure this noise can be induced/caused due to normal brake pad and brake rotor vibrations. Exchanging brake components will not rectify.

  Associated Products (98)

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  Associated Documents

  • DownloadMC-11024405-0001.pdf↗
• October 10, 2025•Document ID: 11024274

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.62-P-078631

  Date Added:

  October 14, 2025

  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.

  Associated Products (53)

  2026 Mercedes-Benz CLA-Class2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz CLE2024 Mercedes-Benz E-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2024 Mercedes-Benz GLE-Class2024 Mercedes-Benz GLS-Class+ 33 more
  Associated Documents

  • DownloadMC-11024274-0001.pdf↗
• October 6, 2025•Document ID: 11023937

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER

  Mfr Comm. #:

  LI83.20-P-076623

  Date Added:

  October 6, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint • Insufficient heating output in vehicle interior • Customer describes a one-off, loud "plopping" noise during the journey Workshop findings: • Refrigerant line between refrigerant compressor and condenser is cracked • If listed line is cracked, please conduct the following tests 1. Are the fault codes B19A200 or P053400 current or stored in air conditioner control unit N10*1? 2.Check dryer cartridge at condenser for particles: Remove dryer cartridge, illuminate inlet of dryer cartridge using flashlight (A), and examine filter screen through outlet of dryer cartridge (B) -> see comparison picture bad/good Further possible signs for this fault profile are: • Refrigerant level clearly too low (target: 670 g): In this case, please first of all check where a leak is present in the system • Loud noises from compressor: If loud noises are coming from the compressor, this finding must be validated with the two tests specified above (check the dryer cartridges or the specified fault codes). Loud noises alone are no reason to replace the compressor, since these can be very subjectively perceived in individual cases. Cause The refrigerant line between the A/C compressor and capacitor may be damaged due to a high refrigerant temperature. Remedy If the tests listed have been carried out and the results correspond to the described fault profile, please carry out the following steps: 1. Flushing of the refrigerant circuit as per AR83.30-P-1785EQA 2. Then replace the following parts: • A/C compressor (***IMPORTANT: If the A/C compressor A0008304404 or A0008307704 is installed in the vehicle, it must be replaced by part number A0008307804***) • Refrigerant line between refrigerant compressor and condenser • If the capacitor A0998301100 is installed, then replace the complete capacitor (including dryer cartridge and PT sensor). • If capacitor A0998301400/1500 is installed, only new dryer cartridge (A2938350500) 33. In order to use the new refrigerant line A2438308600, the electrical wire of pressure sensor B161/2 must be extended. • Disconnect plug from pT sensor. • Remove insulation approx. 15 cm from the plug. • Extend lines by 425 mm. For this purpose, please observe the Basic data for wiring harness repairs with axial solder connectors (AR54.18-P-0100-06A). • Wrap wiring harness with complete insulation wrapping. • Route wire to the newly positioned pT sensor and secure with cable tie to prevent scouring. 4. Install 4 blind plugs (4x A0005458780) in coupling housing A0285458362 and fit it onto the old sensor. 5. Check SAM (N10) for latest software. If necessary, perform software update. 6. Please then check whether all of the heating and cooling functions are active. If not, please create a TIPS case with the following information: • Detailed description of the customer complaint and the workshop measures carried out • Initial quick test • Photos of the filter screen of the dryer cartridge

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11023937-0001.pdf↗
• September 25, 2025•Document ID: 11023347

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-071499

  Date Added:

  September 25, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The result from the XENTRY battery test does not match the current state of the battery. Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM or EZS cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy 1) If the battery is discharged, charge the battery. Review WS54.00-P-0037B for minimum charger specifications. • Note the amperage difference between trickle (maintainer) chargers of at least 16A and quick chargers of at least 30A. • Review AP54.10-P-5449U. Note when battery is sufficiently charged the charger current is less 5A. 2) While charging the battery, analyze the vehicle data to determine root cause of discharge using the following data points: • NOTE: For guidance on use of the on-board electrical data please review the AKUBIS video titled "New onboard electrical system diagnosis shown on BR 166". The video can be accessed through WIS by following the path WSM--> content by model series --> passenger cars --> ML-Class --> Model 166 --> group 54 --> New onboard electrical system diagnosis. • Refer to the March 2023 PCTT for the video walkthrough of analysis as well as the attachment of the slides to this Li. • Review GF54.10-P-1012A regarding what can cause deep discharge protection to not end a battery draw. • Review SI54.10-P-0024A for proper maintenance of the vehicle. For Star 2 vehicles: -Review FSAM on-board electrical data conspicuous records • NOTE: This data can be found via FSAM N10/6 -> Actual Values -> On-board electrical system -> On-board electrical system data For Star 3 vehicles: -Review N73/3 EZS on-board electrical data conspicuous records • NOTE: This data can be found via EZS N73/3 -> Actual Values -> On-board electrical system -> On-board electrical system data 3) Determine if root cause is due to: • vehicle technical issue? • customer behavior? NOTE: Recommend using battery analysis sheet found in XiW -> Local Contents -> Diagnostic info -> Battery Discharge Worksheet 4) If battery still does not accept charge AND the vehicle does not fall within the parameters of improper maintenance, then create a TIPS case. *IMPORTANT* - If the improper maintenance/use is found during diagnosis, DO NOT open a TIPS case. If a TIPS case is opened, it will be marked 1 star and directed to your assigned FSE for review. TIPS Case must include with the case: • Amperage setting of charger and time battery was on charger • XENTRY Battery Tester results • Voltage of battery taken with multimeter: Do not connect charger while taking measurements • N10/6 FSAM, (N73 or N73/3) and (N73*1 or N73/3*1) • Workshop analysis of conspicuous data • Root cause analysis for battery discharge based on the above documents (technical, customer, etc.) • NOTE: For expedited results when creating a case write customer complaint as "XENTRY Battery Tester implausible".

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  Associated Documents

  • DownloadMC-11023347-0001.pdf↗
• September 16, 2025•Document ID: 11023155

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  LI72.20-P-079685

  Date Added:

  September 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Bulging and contact of the rear spoiler when hatch is opened (picture 1-1). When opening the rear hatch, the rear spoiler rests at the roof edge, which can result in damage to the rear spoiler and roof if the hatch is forcefully opened when the rear spoiler is bulged over (picture 1-2). Cause In the event of higher outside temperatures, the spoiler of the rear-end door thermally expands and may be above the roof by several millimeters. When opening the rear hatch when the rear spoiler is in a bulged condition, this can result in a collision between the rear spoiler and the roof edge. The cause may be related to fastening clips of the rear spoiler that have become loose. Remedy Remove rear spoiler, replace all fastening clips. Install rear spoiler again. In the event of damage, repair the vehicle. After assembly of the rear spoiler, check whether the clip is completely locked: When the rear-end door is open, press against the rear spoiler with your thumbs with around 5 kg of pressure (picture) 4). If it is possible to easily press the rear spoiler against the roof edge, the clip is not locked or may be damaged.

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  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLB-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLB-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLB-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz GLB-Class
  Associated Documents

  • DownloadMC-11023155-0001.pdf↗
• September 16, 2025•Document ID: 11023154

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-079533

  Date Added:

  September 17, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message, warning message in the IC If the initial warning messages are ignored in the same ignition cycle, additional warning messages, e.g. red HV warning message and yellow HV drive system warning message may be shown. The DC/DC converter has stored a combination of the following two fault code groups: 1. P0C3B00, P0E9700, P0E5400, P0C4000. 2. P1D0B00, P1CA000, U011500. In some cases, not all DTCs from one of these groups are triggered. 243: As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. This triggers the yellow HV drive system warning message. In the ignition cycle in which the red 12 V fault message is displayed, the DC/DC converter does not support the 12 V on-board electrical system. This means the 12 V battery may be discharged in the event of longer use. Cause In individual ignition cycles, this may result in faulty wake-up behavior of the DC/DC converter. The DCDC DTCs and warning messages may appear with a time delay. When accessing the vehicle, the white (243/465) HV warning message is displayed. When the HV system is switched on (charging, 12V supports, precon, ignition on), the yellow HV drive system warning message is displayed on the 243 with BMS30EB02 (see below for details). When the vehicle is started/PT-ready (displayed in the IC), the red 12V battery warning message is displayed for 243 and 465. Since the BMS on 243 uses the HV voltage value to check the auxiliary assembly fuse, the auxiliary assembly DTC can (with BMS30EB02) be stored as a consequence and the second (yellow) HV drive system warning message can be displayed in the IC. Remedy The faulty state of the DC/DC converter can always be rectified with an ignition change with BUS idle. The fact that the red 12 V warning message does not appear again is an indication of this. On vehicles with the yellow hybrid drive system message, it is still displayed because it is not automatically reset once the faulty state is reset. Check the DC/DC converter for functionality via Xentry Diagnostics in the workshop: • Actuate BUCK mode for approx. 30 s • The output current normally jumps to a high value (e.g. 100 A) and then falls slowly to the current specified value e.g. 50 A and then only changes slowly and in small increments. 243 EB311/312 (BMS30EB01): Perform reset of the DC/DC converter, e.g. through a BUS idle or by clearing the fault memory, to exit the faulty state. 243 EB330 (BMS30EB02): Clear the fault memory, since the DTC for the auxiliary assembly fuse and the yellow hybrid drive system warning message are not automatically reset. 465: Perform reset of the DC/DC converter, e.g. through a BUS idle or by clearing the fault memory, to exit the faulty state. !!! Important note: Problems in this area do not have to be invoiced on the damage code for the DC/DC converter 54720. !!! Information: Cause analysis is still ongoing in order to determine a long-term remedy. In cases in which the fault profile occurs multiple times, replacement of the DC/DC converter can be carried out. This may help delay the fault profile from reoccurring.

  Associated Products (5)

  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11023154-0001.pdf↗
• September 15, 2025•Document ID: 11023138

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI42.45-P-079407

  Date Added:

  September 16, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Instrument cluster warning lamp and/or warning message for brake system, EPB, ESP (yellow or red) and possibly 12V battery (red) Different combinations of the following DTCs present in the ESP: B23AA77, B23AB77, B23D177 and in part (C100BE0, C100BE1, B23AA1B, B23D152) Cause Due to a reduction in resistance at the HV voltage divider, the DC/DC converter measures an incorrect HV voltage. Regulation of the 12 V output voltage therefore becomes unstable. I.e. the output voltage starts to fluctuate and the output current starts to jump instead of slowly regulating to the currently requested value. The EPB position is calculated by the voltage and the current. Since these fluctuate, the ESP control unit loses its position and sets the DTCs. Remedy Check of the DC/DC converter via XENTRY Diagnosis • Actuate BUCK mode for approx. 40 s • The output current normally jumps to a high value (e.g. 100 A) and then falls slowly to the current specified value e.g. 50 A and then only changes slowly and in small increments. • In the event of this fault cause, the output current is subject to strong fluctuations/jumps (multiple 1-10 A) (see videos in attachment) • Perform in XENTRY -> DC/DC converter N83/1 -> Special procedures -> "Evaluation of the HV resistance reduction of the DC/DC converter control unit". The special procedure compares the serial number of the installed DC/DC converter with the list of potentially affected parts. • Depending on the result: • If the serial number can be found in the list of potentially affected component parts, then replace the DC/DC converter. • If the serial number cannot be found in the list of potentially affected parts, XENTRY reports that the part is not malfunction. If the problem from this LI applies, please open a TIPS case and forward to HQ. Subsequent complaint, malfunction on the EPB: • Check of the actuators and brake caliper piston • Manually extend and retract the piston on the brake caliper completely using the suitable socket • If the piston sticks at a certain point, the rotation force increases significantly • If the brake caliper piston sticks, the brake caliper has to be replaced • If the retaining ring of the actuator is broken, the actuator has to be replaced • In XENTRY, edit the stored test instructions of the remaining DTCs

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11023138-0001.pdf↗
• September 11, 2025•Document ID: 11023153

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI47.70-P-076030

  Date Added:

  September 17, 2025

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint After the charging process is complete, an instrument cluster message with a charging error appears and FC P0CFE00 is stored in control unit "N83 - AC charger for high-voltage battery (SG-LG)". The fault message and the fault memory entry can also appear at the beginning of the charging pause during delayed charging. Both only occur in combination with active pre-entry climate control. Cause Software in control unit "N83 - AC charger for high-voltage battery (SG-LG)". Remedy For model series 167, 214, 254 and 223 with code 802: Perform SCN coding in control unit "N83 - AC charger for high-voltage battery (SG-LG)". Please do not replace any parts even if the FC P0CFE00 coding continues to appear after successfully completing this step. A new software is currently in development and will become available in 11/2025. Replacing parts will not remedy the issue. For model series 243: The correction is already available. Please inform the workshop to perform a software update and SCN coding for the control units "N116/5 - Direct current charging connection unit (DCCU)" and "N83/11 - AC charger for high-voltage battery (SG-LG)" in order to remedy the problem.

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  2025 Mercedes-Benz C-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz S-Class2024 Mercedes-Benz C-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz S-Class2023 Mercedes-Benz C-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz S-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz S-Class
  Associated Documents

  • DownloadMC-11023153-0001.pdf↗
• September 4, 2025•Document ID: 11023026

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.62-P-077311

  Date Added:

  September 9, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint No audio is output either in radio mode, or with media playback via app, Bluetooth or USB. In such cases, "Playback not active" is shown in the display. Cause Mute line between communication module N112/2 and sound control unit N40/3. Remedy Check the mute cable between control units N112/2 (communication module) and N40/3 (sound system). • Inspect the cable and plug contacts for damage or deformation. • Repair or replace the cable as needed. Important: If any plug contact is found to be deformed, you must also inspect the corresponding connector on the control unit to ensure it is not compromised.

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  Associated Documents

  • DownloadMC-11023026-0001.pdf↗
• September 3, 2025•Document ID: 11023048

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI80.50-P-077350

  Date Added:

  September 9, 2025

  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. Initial problem - 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] - Delete fault memory and recheck vehicle Note - If wiring fault is found in newer vehicle, please send in a IFQ (Initial Field Quality) TIPS Case. 2. Subsequent problem after repair In this case, the workshop must perform the following operation steps: - Replace overhead control panel [N70] (anti-theft alarm system [N26/6] is integrated) - Clean electrical connectors of overhead control panel with commercially available contact cleaner and clean, purified compressed air. - Delete fault memory and recheck vehicle Note - If no remedy is found, please open a TIPS case and send to the Body/Chassis/Entertainment inbox.

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  Associated Documents

  • DownloadMC-11023048-0001.pdf↗
• August 8, 2025•Document ID: 11021800

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-079533

  Date Added:

  August 12, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint: 243: Red 12V battery message, white HV warning message, warning message in the IC ​​and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message, warning message in the IC If the initial warning messages are ignored, additional further warning messages (e.g. red HV warning message and yellow HV drive system warning message) are displayed. The DC/DC converter has saved the four following fault codes at most: P0C3B00, P0E9700, P0E5400, P0C4000. In some cases, not all of these DTCs are triggered. The following DTCs either be triggered additionally or, in rare cases, without the previous DTCs: P1D0B00, P1CA000, U011500. 243: As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. That triggers the yellow HV drive system warning message. Cause: This may result in incorrect wake-up behavior of the DC/DC converter. The DCDC DTCs and warning messages may appear with a time delay. When accessing the vehicle, the white (243/465) HV warning message is displayed. When the HV system is switched on (charging, 12V supports, precon, ignition on), the yellow HV drive system warning message is displayed on the 243 with BMS30EB02 (see below for details). When the vehicle is started/PT-ready (displayed in the IC), the red 12V battery warning message is displayed for 243 and 465. Since the BMS on 243 uses the HV voltage value to check the auxiliary assembly fuse, the auxiliary assembly DTC can (with BMS30EB02) be stored and the second (yellow) HV drive system warning message can be displayed in the IC. Remedy: Check of the DC/DC converter via XENTRY Diagnosis Actuate BUCK mode for approx. 30 s The output current normally jumps to a high value (e.g. 100 A) and then falls slowly to the current specified value e.g. 50 A and then only changes slowly and in small increments. 243 EB330 (BMS30EB02):Clear the fault memory, since the DTC for the auxiliary assembly fuse and the yellow hybrid drive system warning message can only be reset in this way. 465:Perform a reset of the DC/DC converter, e.g. through a BUS idle or by clearing the fault memory, to exit the error state. Information: Cause analysis is still ongoing in order to determine a long-term remedy. In cases in which the fault profile occurs multiple times, please open a TIPS case.

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  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11021800-0001.pdf↗
• August 5, 2025•Document ID: 11021970

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.10-P-079533

  Date Added:

  August 19, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint: 243: Red 12V battery message, white HV warning message, warning message in the IC ​​and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message, warning message in the IC If the initial warning messages are ignored, additional further warning messages (e.g. red HV warning message and yellow HV drive system warning message) are displayed. The DC/DC converter has saved the four following fault codes at most: P0C3B00, P0E9700, P0E5400, P0C4000. In some cases, not all of these DTCs are triggered. The following DTCs either be triggered additionally or, in rare cases, without the previous DTCs: P1D0B00, P1CA000, U011500. 243: As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. That triggers the yellow HV drive system warning message. Cause: This may result in incorrect wake-up behavior of the DC/DC converter. The DCDC DTCs and warning messages may appear with a time delay. When accessing the vehicle, the white (243/465) HV warning message is displayed. When the HV system is switched on (charging, 12V supports, precon, ignition on), the yellow HV drive system warning message is displayed on the 243 with BMS30EB02 (see below for details). When the vehicle is started/PT-ready (displayed in the IC), the red 12V battery warning message is displayed for 243 and 465. Since the BMS on 243 uses the HV voltage value to check the auxiliary assembly fuse, the auxiliary assembly DTC can (with BMS30EB02) be stored and the second (yellow) HV drive system warning message can be displayed in the IC. Remedy: Check of the DC/DC converter via XENTRY Diagnosis Actuate BUCK mode for approx. 30 s The output current normally jumps to a high value (e.g. 100 A) and then falls slowly to the current specified value e.g. 50 A and then only changes slowly and in small increments. 243 EB330 (BMS30EB02): Clear the fault memory, since the DTC for the auxiliary assembly fuse and the yellow hybrid drive system warning message can only be reset in this way. 465: Perform a reset of the DC/DC converter, e.g. through a BUS idle or by clearing the fault memory, to exit the error state. Information: Cause analysis is still ongoing in order to determine a long-term remedy. In cases in which the fault profile occurs multiple times, please open a TIPS case.

  Associated Products (5)

  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11021970-0001.pdf↗
• July 25, 2025•Document ID: 11021107

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  LI32.25-P-070053

  Date Added:

  July 31, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint There may be creaking noises when steering while stationary or driving slowly. See "Sound Example" 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 IMPORTANT: Do not apply document to vehicles outside of the listed validity range. 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. How to identify currently installed springs: • Check for colored dots on the front springs. • If no dots or color markings, please check if there is a 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 check for a barcode label with a 3 digit number. See "Spring Barcode" picture for example. Open a TIPS case with this number and list that it is from the barcode attached to the currently installed spring. • If none of the above references can be found, open a TIPS case. How to identify next spring in line with color dots: • Navigate to the parts catalog and enter the vehicle VIN/FIN. • Navigate to group 32 sub-group 054 (front spring strut) and find the spring. The spring listed in the parts catalog will have a "color marking" indicator. If the dots on the spring and the color listed in the parts catalog is the same then you have the part number of the currently installed spring. If it does not, then you need to clear the vehicle specific filter by using the funnel icon on the right side column of the page and clicking "no filter" at the top and then "apply filter" (see "Clear Vehicle EPC Filter" for how-to pictures). Proceed to finding the spring that matches the color dots on the vehicles currently installed spring. • 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 (Example: If the currently installed spring ends in "13 00" then then next spring in line is "14 00".) How to identify next spring in line with part number tag: • Navigate to the parts catalog and enter the vehicle VIN/FIN and the part number found from the spring. • In order to find the correct or next highest spring, the spring filter must be removed in the XENTRY Parts Information tool. To do this, you need to clear the filters by using the funnel icon on the right side column of the page and clicking "no filter" at the top and then "apply filter" (see "Clear Vehicle EPC Filter" for how-to pictures). • 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 (Example: If the currently installed spring ends in "13 00" then then next spring in line is "14 00".)

  Associated Products (21)

  2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2024 Mercedes-Benz CLA-Class2024 Mercedes-Benz EQB-Class2024 Mercedes-Benz GLA-Class2024 Mercedes-Benz GLB-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class+ 1 more
  Associated Documents

  • DownloadMC-11021107-0001.pdf↗
• July 11, 2025•Document ID: 11020675

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  OTA - 25P5497847

  Date Added:

  July 11, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the MBUX system software does not correspond with the latest series production configuration. The MBUX system will receive an OTA update that includes general product improvements and robustness enhancements for the “Live Traffic Information” and “Point of Interest” (POI) features. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

  Associated Products (26)

  2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLA-Class2023 Mercedes-Benz GLB-Class2023 Mercedes-Benz GLC-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz CLS-Class2020 Mercedes-Benz E-Class2020 Mercedes-Benz GLA-Class+ 6 more
  Associated Documents

  • DownloadMC-11020675-0001.pdf↗
• July 1, 2025•Document ID: 11020156

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  LI32.25-P-079231

  Date Added:

  July 2, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint When driving on uneven road surfaces, there may be cracking, thumping, or knocking noises from the area of the rear axle. Cause The lower connection of the shock absorber (damper) to the lower transverse control arm might not have been torqued to specification. Remedy Tighten threaded connection to listed appropriate torque. (See WIS). Replacing the shock absorber (damper) does not remedy the problem. Invoice SSL 32D07 and 32S07 for this. Note: The threaded connection is self-locking and will not detach. Noise is the only byproduct.

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11020156-0001.pdf↗
• June 24, 2025•Document ID: 11019750

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI82.60-P-079463

  Date Added:

  June 26, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint The head unit cannot be operated via the steering wheel buttons on the right side. Cause A26/17 - MBUX multimedia system (head unit) software Remedy Update the A26/17 - MBUX multimedia system (head unit) to newest/latest software. Then recommission steering wheel electronics N135 - steering wheel electronics (LRE). If the problem is still present, please create a TIPS case. Note: Please do not replace any parts.

  Associated Products (34)

  2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLE-Class2025 Mercedes-Benz GLS-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-Class+ 14 more
  Associated Documents

  • DownloadMC-11019750-0001.pdf↗
• June 17, 2025•Document ID: 11019640

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER

  Mfr Comm. #:

  LI83.20-P-076623

  Date Added:

  June 18, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint • Insufficient heating output in vehicle interior • Customer describes a one-off, loud "plopping" noise during the journey Workshop findings: • Refrigerant line between refrigerant compressor and condenser is cracked • If listed line is cracked, please conduct the following tests 1. Are the fault codes B19A200 or P053400 current or stored in air conditioner control unit N10*1? 2. Check dryer cartridge at condenser for particles: Remove dryer cartridge, illuminate inlet of dryer cartridge using flashlight (A), and examine filter screen through outlet of dryer cartridge (B) -> see comparison picture bad/good Further possible signs for this fault profile are: • Refrigerant level clearly too low (target: 670 g): In this case, please first of all check where a leak is present in the system • Loud noises from compressor: If loud noises are coming from the compressor, this finding must be validated with the two tests specified above (check the dryer cartridges or the specified fault codes). Loud noises alone are no reason to replace the compressor, since these can be very subjectively perceived in individual cases. Cause The refrigerant line between the A/C compressor and capacitor may be damaged due to a high refrigerant temperature. Remedy If the tests listed have been carried out and the results correspond to the described fault profile, please carry out the following steps: 1. Flushing of the refrigerant circuit as per AR83.30-P-1785EQA 2. Then replace the following parts: • A/C compressor (***IMPORTANT: If the A/C compressor A0008304404 or A0008307704 is installed in the vehicle, it must be replaced by part number A0008307804***) • Refrigerant line between refrigerant compressor and condenser • If the capacitor A0998301100 is installed, then replace the complete capacitor (including dryer cartridge and PT sensor). • If capacitor A0998301400/1500 is installed, only new dryer cartridge (A2938350500) 3. Check SAM (N10) for latest software. If necessary, perform software update. 4. Please then check whether all of the heating and cooling functions are active. If not, please create a TIPS case with the following information: • Detailed description of the customer complaint and the workshop measures carried out • Initial quick test • Photos of the filter screen of the dryer cartridge

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11019640-0001.pdf↗
• June 12, 2025•Document ID: 11019743

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  LI08.10-P-079423

  Date Added:

  June 26, 2025

  Manufacturer:

  MERCEDES-MAYBACH

  Summary

  Complaint Reduced Drive Power' warning displayed on Instrument Cluster, as Illustrated in the Picture, but no relevant fault codes are present. Cause There are several reasons for the activation of the Reduced Drive Power Warning, Here are a few examples: • Hood is not closed properly • Valet Service Mode is activated • Beginner Driver Mode is activated Remedy If no relevant fault codes are present, first ensure the hood is securely closed and verify that neither Valet Service Mode nor Beginner Driver Mode is activated in MBUX. If relevant fault codes are detected, then proceed with diagnosing and resolving those specific faults.

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11019743-0001.pdf↗
• June 12, 2025•Document ID: 11019637

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI42.45-P-079407

  Date Added:

  June 18, 2025

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Instrument cluster warning lamp and/or warning message for brake system, EPB, ESP (yellow or red) and possibly 12 V battery (red) Different combinations of the following DTCs present in the ESP: B23AA77, B23AB77, B23D177 and in part (C100BE0, C100BE1, B23AA1B, B23D152) Cause Due to a reduction in resistance at the HV voltage divider, the DC/DC converter measures an incorrect HV voltage. Regulation of the 12 V output voltage therefore becomes unstable. I.e. the output voltage starts to fluctuate and the output current starts to jump instead of slowly regulating to the currently requested value. The EPB position is calculated by the voltage and the current. Since these fluctuate, the ESP control unit loses its position and sets the DTCs. Remedy Check of the DC/DC converter via XENTRY Diagnosis: • Compare the serial number of the DC/DC converter with a list of potentially affected parts in XENTRY -> DC/DC converter N83/1 -> Special Processes. • If the evaluation comes back as defective - Replace the DC/DC converter and inspect the EPB for Subsequent complaint, defect. • If the evaluation comes comes back not affected: Actuate BUCK mode for approx. 30 s • The output current normally jumps to a high value (e.g. 100 A) and then falls slowly to the current specified value e.g. 50 A and then only changes slowly and in small increments. • In the event of this fault cause, the output current is subject to strong fluctuations/jumps (multiple 1-10 A) (see videos in attachment). • In the event of strong fluctuations and the S/N not identified in the Special Process, please open a TIPS case and attach print out of DC/DC special procedure and buck mode actual values. Subsequent complaint, defect on the EPB: • Check of the actuators and brake caliper piston • Manually extend and retract the piston on the brake caliper completely using the suitable socket • If the piston sticks at a certain point, the rotation force increases significantly • If the brake caliper piston sticks, the brake caliper has to be replaced • If the retaining ring of the actuator is broken, the actuator has to be replaced • In XENTRY, edit the stored test instructions of the remaining DTCs

  Associated Products (4)

  2025 Mercedes-Benz EQB-Class2024 Mercedes-Benz EQB-Class2023 Mercedes-Benz EQB-Class2022 Mercedes-Benz EQB-Class
  Associated Documents

  • DownloadMC-11019637-0001.pdf↗