2023 Mercedes-Benz EQB 300 4MATIC electrical system problems
36 owner complaints filed with NHTSA name the electrical system on the 2023 Mercedes-Benz EQB 300 4MATIC — 72% of all complaints for this model year.
What owners report
“There is a recall associated with this model that causes catastrophic stoppage without any ability to drive. My vehicle VIN does not have a recall according to your site. Despite this, my vehicle catastrophically stopped multiple times. It was repaired at least three times and still stopped in the…”
filed Jul 19, 2026
“The contact owns a 2023 Mercedes-Benz EQB 300 4Matic. The contact received notification of NHTSA Campaign Number: 26V073000 (Electrical System); however, the part to do the recall repair was not yet available. The dealer was contacted. The contact was concerned that the manufacturer provided…”
filed Jul 15, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- High voltage battery may fail internally and lead to a vehicle fire while parked or…Campaign 26V073000 · Feb 6, 2026
- High voltage battery may fail internally and lead to a vehicle fire while parked or…Campaign 25V894000 · Dec 19, 2025
- Bus bar in the high voltage battery may be secured with incorrect screws, which can cause…Campaign 25V487000 · Jul 25, 2025
- High voltage battery may fail internally and lead to a vehicle fire while parked or…Campaign 25V050000 · Feb 7, 2025
Related service bulletins
Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This…
LI54.21-P-080326 · Service Bulletin/Repair Instructions · issued Jul 24, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290, 118, 243, 247: Software is still in development. This…
LI54.21-P-080326 · Service Bulletin/Repair Instructions · issued Jul 2, 2026Complaint Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop menu, e.g., 505 or 550A, which includes a service A. Cause The root cause is currently being…
LI00.20-P-080703 · Service Bulletin/Repair Instructions · issued Jun 12, 2026Complaint "Weekly profile" pre-entry climate control setting not available in the climate control menu or grayed out in the Mercedes me connect App. Cause There may be limitations on the indicator in the display due to…
LI83.70-P-078546 · Service Bulletin/Repair Instructions · issued Jun 8, 2026Complaint 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 cluster. In addition, the following two…
LI82.85-P-080507 · Service Bulletin/Repair Instructions · issued May 26, 2026
Other reported problem areas on the 2023 Mercedes-Benz EQB 300 4MATIC
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.