2026 Mercedes-Benz Cla 350 4matic (EV) technical service bulletins
62 technical service bulletins and manufacturer communications cover the 2026 Mercedes-Benz Cla 350 4matic (EV).
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Display message in the instrument cluster: Driving assistance system function limited
- 174 with MB.OS 2.1.3 ‑ Driver Assistance System Limited in Instrument Cluster and Does Not Self‑ Extinguish
- At low A/C loads and low blower setting (min
- The vehicle pulls to the left or right
- 174 with MB.OS 2.1.3 ‑ Driver Assistance System Limited in Instrument Cluster and Does Not Self‑Extinguish
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Clanking noise from the area of the speakers in the doors
- Display message in the instrument cluster for "Active Brake Assist Inoperative" or "DISTRONIC...
- 174 with MB.OS 2.1.1 ‑ Driver Assistance System Limited in Instrument Cluster and Does Not Self‑Extinguish
- Tailgate opens unintentionally
- 1. Connect XENTRY Diagnosis
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- High-frequency cheeping or ticking when heating is requested in the instrument panel area
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Customer receives a message about an overheated vehicle battery
- Display message in the instrument cluster: "Driving assistance system function limited"
- Customer reports a squeaking or creaking sound (See Example) originating from the lower front seat area
- After updating MB.OS to 1.3.7, every key cycle displays consistent instrument cluster message "Driver...
- After updating MB.OS to 1.3.7, every key cycle displays consistent instrument cluster message "Driver...
- In some cases, we are seeing issues with the CLA/174
- Noises from the area of the steering column
- Fault code P063544
- There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper...
- Brief (a few seconds), self-healing "driver assistance systems unavailable" messages are expected and...
- • Uneven steering feel when steering left and right, especially when steering near the center position
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Electrical system
- Cause At present, there are no known noise problems with the steering column
- Headlamp, front fog lamp leaky or fogged
- Either during PDI or after updating vehicle software, there may be: • "A+S"
- Following update to MBOS 1.3.0 or higher, front passenger display becomes inoperable
- After a seamless update to ARTEMIS Release E216.4 (A 174 902 6104), there is no longer a backend...
- There may be creaking noises when steering while stationary or driving slowly
- Either during PDI or after updating vehicle software, there may be: • "A+S"
- Headlamp, front fog lamp leaky or fogged
- Stored DTC C220564
- Driver assistance system warning messages in instrument cluster
- Either during PDI or after updating vehicle software, there may be: • "A+S"
- Steering force assistance unavailable after vehicle start along with several yellow warning messages and...
- Brief (a few seconds), self-healing "driver assistance systems unavailable" messages are expected and...
- Fault code P063544
- Tailgate opens unintentionally
- The vehicle's position on the map is displayed far away from its actual position, e.g. the vehicle is...
- Customer states the AC either does not cool/has poor performance or heat is insufficient
- Customer states the AC either does not cool/has poor performance or heat is insufficient
- The complaint reported is that the driver display shows the message “Frunk open” although it is closed
- A finger is permanently detected although none is present, but it is not identified (ghost function)
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- USB port not functioning properly
- High-frequency cheeping or ticking when heating is requested in the instrument panel area
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