2018 Mercedes-Benz CLA 250 service bulletins & manufacturer communications
104 manufacturer communications are on file with NHTSA for the 2018 Mercedes-Benz CLA 250. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.
Technical service bulletin 101Service campaign 2Warranty extension 1
- Complaint Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction during certain driving situations. May be most noticeable when transi…LI 27.10-P-080851 · Technical service bulletin · Power Train · issued Aug 29, 2026
- Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA i…CL - Tank Leak Detection · Warranty extension · Fuel/propulsion System · issued Aug 15, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued Aug 12, 2026
- Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search 3.IP…LI82.85-P-079087 · Technical service bulletin · Electrical System · issued Aug 6, 2026
- 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 contin…LI82.62-P-078631 · Technical service bulletin · Structure · issued Aug 6, 2026
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of trave…LI35.30-P-058566 · Technical service bulletin · Power Train · issued Jul 14, 2026
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline f…PSL-NCU Return Parts 6/19 · Technical service bulletin · Engine · issued Jun 19, 2026
- Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the instrument …LI82.85-P-080507 · Technical service bulletin · Electrical System · issued May 26, 2026
- Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not …LI82.30-P-059239 · Technical service bulletin · Visibility/wiper · issued May 19, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued May 12, 2026
- Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to a…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Apr 16, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued Mar 9, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued Feb 28, 2026
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078307 · Technical service bulletin · Exterior Lighting · issued Feb 25, 2026
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078896 · Technical service bulletin · Exterior Lighting · issued Feb 24, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued Feb 13, 2026
- Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the TIREFIT sealant bottle may not meet specifications. The possibili…NCU - 2025090001 · Service campaign · Unknown / Other · issued Feb 13, 2026
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Back Over Prevention · issued Jan 30, 2026
- Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy *Note - This Li does not apply if there a…LI83.30-P-079850 · Technical service bulletin · Visibility/wiper · issued Jan 16, 2026
- Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Veri…LI83.30-P-079850 · Technical service bulletin · Visibility/wiper · issued Jan 15, 2026
- Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Veri…LI83.30-P-079850 · Technical service bulletin · Visibility/wiper · issued Jan 7, 2026
- Complaint Oil residue in connector of transmission control unit in dual-clutch transmission models 724.0 and 724.1. Cause As part of the production process, the electrohydraulic co…LI27.19-P-080155 · Technical service bulletin · Power Train · issued Dec 19, 2025
- Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. C…LI54.65-P-080132 · Technical service bulletin · Electrical System · issued Dec 11, 2025
- Complaint The check engine light illuminates or the 48 V message is displayed in the instrument cluster Cause Fault code "P0A7F00" stored in the 48 V battery G1/3 and/or is current…LI54.10-P-078888 · Technical service bulletin · Electrical System · issued Dec 3, 2025
- 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 (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued Nov 15, 2025
- Complaint Customer complaints regarding automatic transmission 724.1 (8FDCT & 8FDCT hybrid) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (I…LI27.00-P-077141 · Technical service bulletin · Power Train · issued Aug 5, 2025
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty c…CL - 05012025 · Technical service bulletin · Electrical System · issued May 30, 2025
- 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 (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued May 21, 2025
- Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the SCN coding in the Belt-driven Starter Alternator (BSA) control un…NCU-2025040008 · Service campaign · Electrical System · issued May 2, 2025
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078896 · Technical service bulletin · Exterior Lighting · issued Apr 28, 2025
- Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to an…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Apr 28, 2025
- Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search 3.IP…LI82.85-P-079087 · Technical service bulletin · Electrical System · issued Apr 21, 2025
- Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during …LI82.70-P-077433 · Technical service bulletin · Electrical System · issued Mar 5, 2025
- 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 (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued Jan 16, 2025
- 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…LI27.19-P-072588 · Technical service bulletin · Power Train · issued Nov 20, 2024
- 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 …LI82.85-P-078473 · Technical service bulletin · Electrical System · issued Nov 20, 2024
- Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any …LI82.10-P-078069 · Technical service bulletin · Exterior Lighting · issued Nov 13, 2024
- 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.…LI82.35-P-078467 · Technical service bulletin · Structure · issued Oct 23, 2024
- 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 cr…LI01.20-P-078446 · Technical service bulletin · Engine · issued Oct 4, 2024
- 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 …LI82.85-P-078473 · Technical service bulletin · Electrical System · issued Oct 3, 2024
- Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during …LI82.70-P-077433 · Technical service bulletin · Electrical System · issued Sep 28, 2024
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078307 · Technical service bulletin · Exterior Lighting · issued Sep 21, 2024
- Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases c…LI82.10-P-078302 · Technical service bulletin · Exterior Lighting · issued Sep 10, 2024
- Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to …LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Sep 10, 2024
- Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headla…LI82.10-P-078304 · Technical service bulletin · Exterior Lighting · issued Sep 9, 2024
- Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any …LI82.10-P-078069 · Technical service bulletin · Exterior Lighting · issued Jul 23, 2024
- Mercedes-Benz AG (â  MBAGâ  ), the manufacturer of Mercedes-Benz, has determined that in certain MY 2017-2021 C-Class, CLA, CLS, E-Class, GLC, GLE, GLS, AMG GT, S-Class, SL, …NCU-OTAcommNoMMC · Technical service bulletin · Electrical System · issued Jan 18, 2024
- Crease formation on genuine leather seat covers in vehicles with low mileage â ¢ Objects left on the seats for extended periods of time (pressure marks). â ¢ Objects wedged b…LI91.18-P-077075 · Technical service bulletin · Seats · issued Dec 4, 2023
- Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Various causes Up to Model year 2018 Fault code P06DA00 can be disregarde…LI07.70-P-070763 · Technical service bulletin · Engine and Engine Cooling · issued Nov 17, 2023
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. The message occurs in parti…LI82.85-P-076800 · Technical service bulletin · Electrical System · issued Oct 10, 2023
- Mercedes-Benz AG (â MBAGâ ), 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,…NCU-HU SW Update · Technical service bulletin · Electrical System · issued Aug 28, 2023
- The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES control…LI82.85-P-076799 · Technical service bulletin · Electrical System · issued Aug 18, 2023
- "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 â Boost Pressure is Too High"" "LI09.00-P-074093 · Technical service bulletin · Engine and Engine Cooling · issued Dec 8, 2021
- Spare wheel.NCU2021090006 · Technical service bulletin · Unknown / Other · issued Sep 24, 2021
- Vibrations/ humming when moving off or maneuvering with the wheels turnedLI35.00-P-072963 · Technical service bulletin · Power Train · issued Jul 14, 2021
- Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2018-2019 C and E-Class vehicles (205/238 platforms), an incorrect …Launch NCU 20200 · Technical service bulletin · Engine and Engine Cooling · issued Feb 11, 2021
- Humming/ vibrations/ noises from the area of the rear axle while maneuvering or when moving offLI35.31-P-072105 · Technical service bulletin · Power Train · issued Sep 12, 2020
- Implausible "service due" instrument cluster message, head unit pop-up, or Mmc messageLI00.20-P-070791 · Technical service bulletin · Electrical System · issued Aug 28, 2020
- Engine diagnosis warning lamp activated - Fault code P012800LI20.10-P-060902 · Technical service bulletin · Lane Departure · issued Aug 3, 2020
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctionalLI82.85-P-071453 · Technical service bulletin · Communication · issued Jul 31, 2020
- MBUX multimedia system: "Favorites" and "Recent destinations" not availableLI82.85-P-071529 · Technical service bulletin · Electrical System · issued Jul 23, 2020
- Headlamps foggedLI82.10-P-063239 · Technical service bulletin · Exterior Lighting · issued Jun 30, 2020
- Headlamps foggedLI82.10-P-062049 · Technical service bulletin · Exterior Lighting · issued Jun 30, 2020
- Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. …LI82.10-P-064766 · Technical service bulletin · Equipment · issued Jun 30, 2020
- Information Label on Tire SealantP-SC-2020020001 · Technical service bulletin · Equipment · issued Feb 7, 2020
- Retrofitted front door exit lamps with logo projection flickerLI82.20-P-070189 · Technical service bulletin · Structure · issued Jan 14, 2020
- Clock in the instrument cluster stopsLI54.30-P-067588 · Technical service bulletin · Unknown / Other · issued Jan 2, 2020
- Squeaking Noise from Exhaust Gas FlapLI49.10-P-064655 · Technical service bulletin · Back Over Prevention · issued Nov 21, 2019
- Throttle lift-off clunking noises at drive shafts of front axleLI33 30-P-056665 · Technical service bulletin · Suspension · issued Aug 5, 2019
- Outside mirror folding out/in nonfunctionalLI72 40-P-069934 · Technical service bulletin · Visibility · issued Jun 27, 2019
- Fault message "SRS - Service Required" displayed in instrument cluster and SRS lamp activeLI54-18-P-069309 · Technical service bulletin · Equipment · issued Feb 19, 2019
- Audio 20: Apple CarPlay displays pixelated imageLI8285P069318v2 · Technical service bulletin · Equipment · issued Jan 30, 2019
- Seat belt extender toothed rack sluggish or makes noisesLI91 45-P-066075 · Technical service bulletin · Seat Belts · issued Jul 23, 2018
- 7G-DCT: Scratching noise when changing gear from D to R when transmission cold.LI27 50-P-064440 · Technical service bulletin · Power Train · issued Jul 16, 2018
- Audio 20: Symbols in the status line in the central display can overlapLI82 85-P-068378 · Technical service bulletin · Equipment · issued Jul 10, 2018
- Update HERMES control unit software2018010007 · Technical service bulletin · Electrical System · issued Feb 16, 2018
- Vehicle does not start, battery discharged.LI54 10-P-066342 · Technical service bulletin · Electrical System · issued Oct 26, 2017
- LED light on thermal cup holder in rear passenger compartment of BR 222 flickersLI82 20-P-067107 · Technical service bulletin · Exterior Lighting · issued Oct 5, 2017
- Partial operation of interior ambient lightingLI82 20-P-067044 · Technical service bulletin · Interior Lighting · issued Sep 19, 2017
- Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.LI2700P0647671 · Technical service bulletin · Unknown / Other · issued Aug 26, 2016
- Traffic information service and posibly the voice control, nonfunctional after navigation software update.LI8285P0647651 · Technical service bulletin · Equipment · issued Aug 25, 2016
- Gasket may settle causing a slight oil leak.LI1830P0597123 · Technical service bulletin · Engine and Engine Cooling · issued Aug 5, 2016
- Engine starts - but stops againLI49.10-P-060070 · Technical service bulletin · Engine · issued Oct 22, 2014
- Diverse fault messages in instrument cluster. Distronic, ESP, tire pressure monitoring, engine indicator lamp Diverse CAN communication errors stored in quick test Possible malfunc…LI54.18-P-059361 · Technical service bulletin · Electrical System · issued Jul 8, 2014
- Vehicle rocks or lurches once after sitting in park with engine running for roughly 10 minutesLI27.60-P-059304 · Technical service bulletin · Engine and Engine Cooling · issued Jul 1, 2014
- Creaking noises in area of center consoleLI68.20-P-058781 · Technical service bulletin · Equipment · issued Mar 31, 2014
- Coolant warning message in the instrument cluster although the coolant level is OKLI20.00-P-057734 · Technical service bulletin · Engine and Engine Cooling · issued Mar 24, 2014
- Engine diagnosis warning lamp active - check engine light (CEL) on. The fault code P052E71 is logged in the fault memory of the engine control unit.LI07.70-P-058650 · Technical service bulletin · Engine and Engine Cooling · issued Mar 21, 2014
- The center stowage compartment does on close or open smoothly.LI68.20-P-058749 · Technical service bulletin · Equipment · issued Mar 18, 2014
- ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist and ESP® trailer stabilization are unavailable due to a malfunction. Also the adaptive brake lights, Adaptive Brake Assist an…LI54.18-P-057974 · Technical service bulletin · Electrical System · issued Mar 13, 2014
- Engine diagnosis warning lamp is active. One or more of the faults listed under 'Control unit / Fault code' relating to the throttle valve actuator (M16/6) and/or oxygen sensor (G3…LI54.18-P-057927 · Technical service bulletin · Engine and Engine Cooling · issued Mar 7, 2014
- The vehicle cannot be started The vehicle may start by itself shortly after the startup attempt with a delay, as the relay can be late closing. and/or The gear selection is display…LI54.15-P-057373 · Technical service bulletin · Power Train · issued Feb 28, 2014
- Blind Spot Assist may warn for no obvious reason (visual and then acoustic warning message).LI54.70-P-058571 · Technical service bulletin · Lane Departure · issued Feb 25, 2014
- Surface damage on steering wheel trimLI46.10-P-057961 · Technical service bulletin · Steering · issued Feb 18, 2014
- Implausible coolant warning message in instrument clusterLI20.00-P-057734 · Technical service bulletin · Electrical System · issued Feb 14, 2014
- Transmission intermittently fails to shift, vehicle jolts in higher gears. The dual clutch transmission (DKG) control unit contains the stored FC 92177 or 92100 - The shift valve o…LI27.60-P-058317 · Technical service bulletin · Power Train · issued Feb 5, 2014
- Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"GI88.40-P-057430 · Technical service bulletin · Equipment · issued Feb 3, 2014
- Software update of COMAND Online control unit.LI8270P056963 · Technical service bulletin · Electrical System · issued Aug 21, 2013
- New roller blind with blind bearing does not fit in previous panoramic with old roof mechanisms or blind guide rails.LI7721P057021 · Technical service bulletin · Visibility · issued Aug 9, 2013
- The COMAND unit does not start or the display remains dark.LI8285P055695 · Technical service bulletin · Electrical System · issued Aug 5, 2013
- Mobile phone cotacts are not transferred completely.LI8270P055572 · Technical service bulletin · Electrical System · issued Aug 5, 2013
- Single, throttle lift-off, clunking noise from the side shaft when starting off (audible at the wheel). The clunk is heard once when changing from forward to reverse (and vice vers…LI33.30-P-056665 · Technical service bulletin · Steering · issued Jul 18, 2013
- Parktronic inoperable.LI5465P056779 · Technical service bulletin · Electrical System · issued Jul 15, 2013
- Vehicle wanders to the left or right.LI46.10-P-056468 · Technical service bulletin · Steering · issued Jul 3, 2013