2019 Mercedes-Benz C 300 electrical system problems
11 owner complaints filed with NHTSA name the electrical system on the 2019 Mercedes-Benz C 300 — 17% of all complaints for this model year.
What owners report
“Throttle body and accelerator pedal position sensors failed. Component is available for inspection upon request. Independent service center confirmed failure on 1/3/2026 with 6 stored fault codes: P2101, P0122, P0222, P0123, P0223, P2135. Vehicle shuts off while driving without warning at various…”
filed Jul 1, 2026
“Odometer Fraud. The contact purchased a 2019 Mercedes-Benz C300. The contact stated that after purchasing the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. The contact stated that at the time of purchase, the odometer reading was approximately…”
filed Feb 9, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Please refer to MBUSA's recall report for specific vehicle model detailsCampaign 22V365000 · May 20, 2022
- Software in the replaced instrument cluster may cause the seat belt warning system to not…Campaign 20V449000 · Jul 31, 2020
- Mounting bracket for the 12-volt battery may not be securedCampaign 19V586000 · Aug 9, 2019
- After parking and exiting the vehicle, the Electronic Stability Program (ESP) software…Campaign 18V909000 · Dec 19, 2018
- Central Powertrain Controller (CPC) control unit could reset while driving, possibly…Campaign 18V761000 · Oct 29, 2018
Related service bulletins
Complaint 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 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, 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 May 12, 2026
Electrical System problems in other C 300 years
| Year | Reports | Share |
|---|---|---|
| 2023 C 300 | 5 | 23% |
| 2022 C 300 | 7 | 28% |
| 2020 C 300 | 4 | 12% |
| 2018 C 300 | 10 | 10% |
| 2017 C 300 | 31 | 14% |
Other reported problem areas on the 2019 Mercedes-Benz C 300
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.