2019 Mercedes-Benz C 300 electrical system problems
12 owner complaints filed with NHTSA name the electrical system on the 2019 Mercedes-Benz C 300 — 18% of all complaints for this model year.
What owners report
“The vehicle experienced a severe safety issue involving a sudden loss of motive power in active traffic. 1. Initial Symptoms & Diagnosis: Recently, the Check Engine Light illuminated. Although the light turned off before my scheduled appointment, I still brought the vehicle to an authorized…”
filed Sep 15, 2026
“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
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
- Please refer to the Part 573 report for specific vehicle model detailsCampaign 21V058000 · Feb 5, 2021
- 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 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 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 Radio 4.Send2Car 5.Speech Detection…
LI82.85-P-079087 · Service Bulletin/Repair Instructions · issued Aug 6, 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 | 3 | 9% |
| 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.