2023 Mercedes-Benz EQB 300 4MATIC electrical system problems
38 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
“I am the owner of a 2023 Mercedes-Benz EQB that has been identified as being affected by the current high-voltage battery safety recall. I recently contacted my authorized Mercedes-Benz dealer regarding the recall and was informed that the recall is currently pending for my vehicle and that the…”
filed Aug 31, 2026
“The affected component is the high-voltage traction battery and related battery management and bus-bar connection systems. My vehicle is available for inspection upon request. I am reporting a safety concern because my vehicle is subject to NHTSA Recall 25V050, which identifies a risk that the…”
filed Aug 27, 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 Customer Complaint: - AC charging is not possible. - The departure time, charging pause, location-based charging or target SOC limit is automatically set to 50% or to a random value in the Mercedes me…
LI54.10-P-080880 · Service Bulletin/Repair Instructions · issued Aug 12, 2026Complaint 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. Cameras 6. Other Park Topics. Cause…
LI54.65-P-080132 · Service Bulletin/Repair Instructions · issued Aug 12, 2026Complaint AC and DC charging are not possible. The white LED on the charging inlet completely goes OFF after plugging in the charging cable. Related DTCs in quick test: There are no related fault codes (DTCs) stored in…
LI54.10-P-080881 · Service Bulletin/Repair Instructions · issued Aug 11, 2026Complaint 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, 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.