2021 Mercedes-Benz CLA250 Technical Service Bulletins

244 technical service bulletins (TSBs) are on record for the 2021 Mercedes-Benz CLA250. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10210924Apr 8, 2022Body and structure. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2020-2021 CLA-Class (118 platform) vehicles, the side impact strut of the front and rear doors may not correspond to the current series production specification. It is therefore possible that corrosion may occur in the area of the antiflutter adhesive. What We’re Doing MBUSA will conduct a service campaign.
• 10210926Apr 1, 2022Electrical system, Wheels. Complaint 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…
• 10209877Mar 31, 2022Electrical system. 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 cannot record the data if the battery is discharged. Note: A discharged battery does…
• 10209880Mar 3, 2022Body and structure. Complaint Staining at top and bottom of trim bars of doors. See example pictures 1, 2. Cause Discoloration of the protective coating of beltline door trim bars and upper door trim bars due to strong alkaline detergent in car washes. Remedy 1. Polish the trim bars with polish A 000 986 43 74. 2. If the complaint cannot be rectified by polishing, replace the door beltline trim bars, door upper trim bars and rear side…
• 10208737Feb 25, 2022Brakes. Complaint Brake squeal from front axle when braking to a standstill. Cause Frictional vibrations between brake lining and brake disk. There is no impact to braking capabilities. Remedy Order and replace A0004202306 Linings of front axle as per parts catalog. It is not necessary to replace the brake disks; see also LI "Brake noises on AMG - vehicles" in design group 42.10.
• 10208671Feb 4, 2022Electrical system, Equipment. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-22 A-Class (177 platform), CLA-Class (118 platform), CLS-Class (257 platform), E-Class (213 and 238 platform), GLA-Class, GLBClass (247 platform), GLC-Class (253 platform), GLE-Class, GLS-Class (167 platform), and GT-Class (290 platform) vehicles, the software for the MBUX control unit does not…
• 10207198Jan 27, 2022Electrical system. Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (GDO) is not compatible with the opening system installed in the garage. 2. The garage door drive uses a rolling code system. In contrast to the fixed code system, the LED in the mirror in this case flashes green after programming. 3.
• 10206078Dec 22, 2021Electrical system. "Model series 118, 177, and 247 with M139 engine and wi- thout code 810 - sound system volume and bass level too low "
• 10206077Dec 8, 2021Engine cooling. "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
• 10206067Dec 2, 2021Equipment, Electrical system. MBUX multimedia system: Map data does not match with your system/the navigation system cannot be activated
• 10205841Sep 24, 2021Other or unknown, Wheels. Spare wheel.
• 10205838Sep 17, 2021Electrical system, Equipment, Other or unknown. MBUX multimedia system control .
• 10205806Aug 30, 2021Equipment. Upon selecting navigation, the central display may show the following message: "Map data does not match with your system. Please insert a medium containing the corresponding map data". the navigation menu cannot be opened.
• 10205812Aug 27, 2021Equipment. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
• 10205813Aug 24, 2021Electrical system. On vehicles with code 077 HERMES dummy module the following functions are restricted, unavailable.
• 10205821Aug 13, 2021Engine cooling, Other or unknown. Important new emission service campaign information.
• 10205814Aug 11, 2021Fuel system. Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
• 10205811Aug 9, 2021Equipment. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
• 10205804Aug 9, 2021Equipment. Insufficient charging or no wireless charging with iPhone 12.
• 10205786Aug 5, 2021Transmission and drivetrain. Transmission does not shift into reverse.
• 10205810Aug 3, 2021Equipment. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
• 10205809Aug 2, 2021Equipment. The customer may note that the Dashcam feature is inoperable with one of the following complaints:
• 10205789Jul 26, 2021Tires. Front right tire pressure sensor sporadically or permanently not detected.
• 10199449Jul 2, 2021Equipment. Launch NCU - 2021030010 MY20-21 Various Add Supplementary Booklet to Printed Operators Manual
• 10191289Mar 29, 2021Equipment. Message (yellow) in IC "Active Brake Assist currently restricted, see operator's manual, Remedy: Deactivate transport mode and drive vehicle for approx 6mi. The DTC then switches to passive and the sensor can be calibrated
• 10191271Mar 24, 2021Electrical system. Engine switches off again when re-attempting Remote Start via Mercedes me App. This only occurs if the first Remote Start via the Mercedes me App was canceled and then started again. If the first attempt was stopped by unlocking the doors or if the engine ran for more than 10 minutes, then the second attempt is also successful
• 10191272Mar 19, 2021Steering. Steering wheel heater and/or Distronic cannot be activated. Remedy: Update software for steering wheel electronics control unit ("N 135 - Steering wheel electronics (LRE)"). Should the quick test carried out after the software update still show DTCs with the steering wheel heater and/or Distronic, replace the steering wheel control panels
• 10191281Mar 12, 2021Suspension. Humming noises or vibrations from the area of the rear axle when maneuvering or moving off at traffic lights/intersections.
• 10191276Mar 10, 2021Steering. Noise from the front axle when steering while stationary or when steering at low speeds
• 10189406Feb 22, 2021Back-over prevention (rear camera). If the exhaust flap is operated or the drive program is changed within 10 seconds of the engine being started, an audible humming noise may emit from the speakers. New sound amp (N40/3) software is currently in development. This document will be updated once it is released. Meanwhile, avoid toggling the drive program or the exhaust flap with 10 seconds of an engine start to avoid the possibility of the complaint…
• 10186147Dec 30, 2020Visibility (wipers, defrost, mirrors). Air Conditioning System Occasionally Does Not Cool Correctly At Outside Temperatures Above 40°C
• 10186139Dec 1, 2020Fuel system, Engine. Check engine light on and FC P146264 sto- red in engine and fuel pump control units
• 10186134Nov 12, 2020Transmission and drivetrain. Communication errors with control unit AWD_M- FA2 - N15/17 - All-wheel drive (transfer case)
• 10186133Nov 12, 2020Electrical system. Fault code for short circuit to ground stored in AW- D_MFA2 - N15/17 - all-wheel drive (transfer case)
• 10184794Nov 6, 2020Equipment, Electrical system. Update Digital Owner's Manual
• 10179976Aug 28, 2020Brakes. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that certain MY 2019-2021 A-Class (177 platform), CLA-Class (118 platform), GLA-Class (247 platform), and GLB-Class (247 platform) vehicles might not be equipped with a means to check the wear status of the brake pads on the rear axle. Furthermore, information regarding the brake gauge and its operation might not be included in…
• 10179904Aug 28, 2020Electrical system. Implausible "service due" instrument cluster message, head unit pop-up, or Mmc message
• 10179961Aug 10, 2020Equipment. Mobile phone Apple iPhone 11/11Pro/11ProMax/SE 2020: The Bluetooth connection between the MBUX multimedia system and the mobile phone is briefly lost
• 10179956Aug 10, 2020Electrical system. Xentry Battery Tester results disagree with workshop assessment
• 10179907Aug 3, 2020Lane departure. Engine diagnosis warning lamp activated - Fault code P012800
• 10179966Jul 31, 2020Other or unknown, Equipment. Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
• 10205156Aug 26, 2016Transmission and drivetrain, Other or unknown. Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.
• 10205154Aug 5, 2016Other or unknown, Engine cooling. Gasket may settle causing a slight oil leak.
• 10205200Jul 15, 2013Electrical system, Other or unknown. Parktronic inoperable.

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