Mercedes-Benz A-Class Service Bulletins (2020)
274 manufacturer communications on file.
- December 1, 2022•Document ID: 10228807Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- LI46.15-P-063353
- Date Added:
- January 5, 2023
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams.
Associated Products (53)2023 Mercedes-Benz AMG GT2023 Mercedes-Benz C-Class2023 Mercedes-Benz CLA-Class2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2023 Mercedes-Benz EQB-Class2023 Mercedes-Benz GLC-Class2023 Mercedes-Benz GLE-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-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class+ 33 moreAssociated Documents - November 1, 2022•Document ID: 10227143Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- LI46.35-P-074816
- Date Added:
- December 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Squeaking noise from area of input shaft of electric steering Cause Inadequate lubrication. Remedy Grease/lubricate sealing area of input shaft. ⢠The steering components can be greased/lubricated while they are still installed
Associated Products (14)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-ClassAssociated Documents - October 28, 2022•Document ID: 10225805Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- NCU-2022100008
- Date Added:
- November 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2020 A-Class and CLA-Class (118 and 177 platform) vehicles, the transmission control unit software does not correspond with the current series configuration. The possibility exists that the vehicle does not start and the fault message âvehicle at risk of rolling and transmission not in P positionâ is incorrectly shown. Upon cycling the ignition the vehicleâs function could be restored. What Weâre Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the transmission control unit software
Associated Products (4)Associated Documents - October 17, 2022•Document ID: 10225806Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING
- Mfr Comm. #:
- LI01.30-P-075439
- Date Added:
- November 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Customer may complain of a CEL on in the instrument cluster, rough running, trouble starting, issues with ECO stop/ start or a combination thereof. Cause One or more broken valve springs in the cylinder head. Remedy Work through the guided tests for any relevant fault codes. For misfire related fault codes this will include: ⢠Inspecting the injector performance data for abnormalities ⢠Using a smoke machine to inspect for air leaks ⢠Performing a compression and leakage test Depending on the severity of the failure, a broken valve springs may be able to be found in a compression/leakage test. If not it may also show up on a PICO running compression test. To verify the best method is to remove the cylinder head cover and inspect the valve springs directly If a broken valve spring is found: ⢠Inspect the valve, rocker, retainer, and keepers on that assembly for damage. ⢠Inspect the camshaft and camshaft lobe that operates that valve ⢠Inspect the piston face via borescope for piston/valve contact Also perform a leak test once the valve is able to be fully seated to ensure no damage to the valve or seat has occurred. If no damage to the piston or valve seat has occurred, replaced the damaged components and release the vehicle. If valve seat or piston damage has occurred please open a PTSS case, upload the results of all tests, and outline what work has been conducted thus far.
Associated Products (7)Associated Documents - October 1, 2022•Document ID: 10225807Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING
- Mfr Comm. #:
- LI05.10-P-075373
- Date Added:
- November 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Chirping or tapping noise originating in area of front crankshaft pulley when engine cold. Noise may lessen as engine reaches operating temperature. Attachments File Description M260 noise.mp4 Noise example Cause Harmonics from timing chain drive. Remedy Replace timing chain tensioner with part A2600502000. Note: This noise will not cause damage to the engine or other symptoms. The chain tensioner should only be replaced in the event of a customer complaint.
Associated Products (12)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-Class2017 Mercedes-Benz GLA-ClassAssociated Documents - September 30, 2022•Document ID: 10222486Service Bulletin/Repair InstructionsSTRUCTURE
- Mfr Comm. #:
- NCU-2022070018
- Date Added:
- October 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz, has determined that in certain MY 2020 A-Class and GLB-Class (177 and 247 platform) vehicles, the contact surface of the upper hinges to the B-pillar on the right and left rear doors may have been arched. As a result, water could intrude into the gap between the Bpillar and door hinge, which may result in corrosion. What Weâre Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will rework the upper hinges of the B-pillar on the left and right rear doors.
Associated Products (2)Associated Documents - September 8, 2022•Document ID: 10222481Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.60-P-075292
- Date Added:
- October 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All Stations" or a different category. Sometimes, the "My Favorites" category will be unavailable for the entire drive cycle. Cause Current MBUX Multimedia System (A26/17) software release Remedy Software update of MBUX Multimedia System (A26/17) to E905.4 (in development). This document will be updated once the software is released.
Associated Products (47)2023 Mercedes-Benz AMG GT2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz GLS-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz AMG GT2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLA-Class+ 27 moreAssociated Documents - September 2, 2022•Document ID: 10222464Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- LI46.35-P-075129
- Date Added:
- October 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Vibrations in steering at speeds lower than 30 mph. Possible when turning and also partly noticeable after changing to winter or all-season tires. Cause Controller stability of steering software, caused by reduced friction in steering (tolerance for production + running-in characteristics). Remedy Software update available in 1st quarter of 2023 (adaptation of stability limits)
Associated Products (11)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLB-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-ClassAssociated Documents - August 18, 2022•Document ID: 10219256Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.62-P-075184
- Date Added:
- September 7, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint On AMG variants of MFA2 platform vehicles (A35/45, CLA35/45, GLA35/45, GLB35/45) without code 853 (Midline sound system) or 810 (Premium sound system), the subwoofer does not emit any entertainment sound. Cause The subwoofer only emits entertainment sound on vehicles with code 853 and 810. For vehicles with standard sound, the subwoofer is only used for the engine sound. Remedy If the vehicle has neither code 853 nor code 810, then the subwoofer does not emit any entertainment sound. This is as designed and therefore not a technical issue. Parts replacement is not necessary or justified. See also SI82.62-P-0004A.
Associated Products (12)2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLB-Class2018 Mercedes-Benz GLA-Class2017 Mercedes-Benz GLA-ClassAssociated Documents - July 20, 2022•Document ID: 10217159Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM
- Mfr Comm. #:
- LI54.10-P-071832
- Date Added:
- August 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint - Vehicle cannot be unlocked/ vehicle does not start - Display message in instrument cluster "Battery - Start Engine - see Operator's Manual Cause Root cause is a bus keepawake in either the Headlight control unit or in one of the following: ALC, IC, SAM, PTCU, ESP. Additionally, the quick test will show U116000 "A bus keepawake control unit has been detected" in the electronic ignition switch (EZS) control unit for this root cause. Remedy Eliminate bus keep awake issue flash new software where available:
Associated Products (14)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-ClassAssociated Documents - July 11, 2022•Document ID: 10217158Service Bulletin/Repair InstructionsEQUIPMENT; STEERING
- Mfr Comm. #:
- LI46.15-P-070510
- Date Added:
- August 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. - Instrument panel support - Steering column switch module If the cause of the noise can be narrowed down to the steering column, create a PTSS case
Associated Products (18)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLE-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLE-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2020 Mercedes-Benz GLE-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-Class2019 Mercedes-Benz GLE-ClassAssociated Documents - July 8, 2022•Document ID: 10217163Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; EQUIPMENT
- Mfr Comm. #:
- LI82.85-P-075044
- Date Added:
- August 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint The Apple Carplay interface cannot be controlled via the center console touchpad or the right-hand steering wheel touchpad. Cause A setting on the iPhone may prevent control via the touchpad Remedy To remedy on the affected iPhone, navigate to "Settings" -> "Accessibility" -> "Touch" and turn the "BackTap" option OFF.
Associated Products (36)2023 Mercedes-Benz AMG GT2023 Mercedes-Benz CLS-Class2023 Mercedes-Benz E-Class2022 Mercedes-Benz A-Class2022 Mercedes-Benz AMG GT2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLE-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz AMG GT2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLE-Class+ 16 moreAssociated Documents - June 30, 2022•Document ID: 10215016Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- NCU-2022060008
- Date Added:
- July 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (âMYâ) 2020-2022 A-Class, C-Class, CLAClass, GLA-Class, GLB-Class, GLC-Class, GLE-Class, and GLS-Class (118, 167, 177, 205, 247, and 253 platform) vehicles, the mobile phone cradle control unit software does not correspond to the current series production specifications. It is therefore possible that the inductive charging function may not work as intended. What Weâre Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the mobile phone cradle control unit software.
Associated Products (21)2022 Mercedes-Benz A-Class2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz GLS-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz GLE-Class2021 Mercedes-Benz GLS-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLB-Class2020 Mercedes-Benz GLC-Class2020 Mercedes-Benz GLE-Class+ 1 moreAssociated Documents - June 3, 2022•Document ID: 10215220Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- NCU-2022050022
- Date Added:
- July 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryMercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2020 CLA-Class, A-Class, and GLB-Class (118, 177, and 247 platform) vehicles, the transmission control unit software may not correspond to current product specifications. It is possible that the vehicle may switch to coasting mode during deceleration or rolling when engaged in drive mode âEâ. In drive mode âEâ, coasting operation is displayed in the instrument cluster as âDâ and may be green instead of white. When exiting coasting mode, the âNâ drive mode instead of âDâ may be activated. The current drive mode will be displayed in the instrument cluster. What Weâre Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the transmission control unit software.
Associated Products (5)Associated Documents - June 2, 2022•Document ID: 10215223Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING
- Mfr Comm. #:
- SC-2022050023
- Date Added:
- July 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryUpdate engine electronics (ME-SFI) control unit software Model 177
Associated Products (4)Associated Documents - May 9, 2022•Document ID: 10213049Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- LI46.35-P-074816
- Date Added:
- June 2, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Squeaking noise from area of input shaft of electric steering Cause Inadequate lubrication. Remedy Grease/lubricate sealing area of input shaft.
Associated Products (12)2022 Mercedes-Benz A-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz GLA-ClassAssociated Documents - April 14, 2022•Document ID: 10210929Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI82.60-P-072403
- Date Added:
- May 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Volume and bass level too low Cause Current sound amp (N40/3) software release. Important: ⢠On vehicles with standard sound, the rear subwoofer (H21/35) emits the engine sound only (if equipped with M139 engine) ⢠On vehicles with code 853 (Advanced Sound) or 810 (Premium Sound), the rear subwoofer (H21/35) emits not only the engine sound, but also entertainment sound Remedy Perform a software update of the sound amp (N40/3) to the latest available version. Note: Do not replace any parts as this will not remedy the complaint.
Associated Products (14)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz CLA-ClassAssociated Documents - April 1, 2022•Document ID: 10210926Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; WHEELS
- Mfr Comm. #:
- LI40.15-P-074659
- Date Added:
- May 4, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint Fault message (yellow) in instrument cluster and TPM warning lamp. Individual or all tire pressure sensors are not recognized. Tire pressure monitoring system nonfunctional / temporarily unavailable. Cause Tires with excessively-large radio signal attenuation interfere with transmission of the tire pressure sensors. Remedy Check if one of the following tires is installed: If one of the tires listed above is installed with the corresponding DOT number, replace this tire. In accordance with the Warranty Manual, the costs for the tire shall be settled directly with the tire manufacturer.
Associated Products (18)2022 Mercedes-Benz A-Class2022 Mercedes-Benz CLA-Class2022 Mercedes-Benz GLA-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz S-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz GLA-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLC-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz GLA-Class2020 Mercedes-Benz GLB-Class2020 Mercedes-Benz GLC-Class2019 Mercedes-Benz A-Class2019 Mercedes-Benz GLC-ClassAssociated Documents - March 31, 2022•Document ID: 10209877Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- LI54.10-P-071499
- Date Added:
- April 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint 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 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 Follow guided tests as described.
Associated Products (51)2022 Mercedes-Benz C-Class2022 Mercedes-Benz CLS-Class2022 Mercedes-Benz E-Class2022 Mercedes-Benz EQB-Class2022 Mercedes-Benz GLB-Class2022 Mercedes-Benz GLC-Class2022 Mercedes-Benz GLE-Class2022 Mercedes-Benz SL-Class2021 Mercedes-Benz A-Class2021 Mercedes-Benz C-Class2021 Mercedes-Benz CLA-Class2021 Mercedes-Benz CLS-Class2021 Mercedes-Benz E-Class2021 Mercedes-Benz GLB-Class2021 Mercedes-Benz GLC-Class2021 Mercedes-Benz GLE-Class2020 Mercedes-Benz A-Class2020 Mercedes-Benz C-Class2020 Mercedes-Benz CLA-Class2020 Mercedes-Benz CLS-Class+ 31 moreAssociated Documents - March 10, 2022•Document ID: 10209881Service Bulletin/Repair InstructionsSTRUCTURE
- Mfr Comm. #:
- LI72.12-P-074542
- Date Added:
- April 5, 2022
- Manufacturer:
- MERCEDES-BENZ
SummaryComplaint The seal on the B-pillar trim of the rear doors may be peeling on upper area Cause The part may exhibit this behavior under normal use. Remedy Replace B-pillar trim through optimized parts.
Associated Products (4)Associated Documents