2004 Mercedes-Benz C240 Electrical system Problems
- Complaints
- 3about this part
- Share
- 19%of 16 total for the year
- Median mileage
- 68,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2004 Mercedes-Benz C240, 19% of the 16 complaints for this model year. Where a mileage was given, the median is 68,000 miles. 2 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“After driving 1 mile from home, the air conditioned system suddenly shut off and smoke started to come out from the driver's vent into the cabin. I left the car uninjured and called 911. Firemen came 10 minutes later and I could see flames coming through the left vent. The driver's side of the dashboard melted completely, the windshield cracked, and my insurer declared the car a total loss. I'm glad there was no personal injury, though the incident was really scary. …”
NHTSA complaint #10629406, filed 2014-08, 36,000 miles“The srs and numerous other malfunctions come on. The headlights and dash lights along with the blinkers are turn on and off by themselves. At first turning the car off the malfunctions went away only to come back a few minutes later. I find this to be very dangerous since the air bags, seat-belts wont work in a accident. Along with if lights go out while driving at night. This problem has happened to me twice before after paying thousand to have it fixed it reappears after a year. I have researched and it seems that everyone is having this same problem due to faulty wire and sensor.”
NHTSA complaint #10513704, filed 2013-05, 80,000 miles“Passenger seat caught fire when using the seat heater. Fire protruded through the side seat panel and burned driver and clothing. The driver was operating the car for about 15 minutes on a city street and pulled off the road to extinguish the fire. Portions of the seat melted.”
NHTSA complaint #10926807, filed 2016-11, 68,000 milesRelated service bulletins
- 11015640Mar 5, 2025Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
- 11008091Sep 28, 2024Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
- 10186141Dec 10, 2020NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
- 10166087Jul 10, 2014The presence of a quiescent current can have several causes. These are not always recognized and lead to an increased number of OK components being removed. Possible Hall sensor…
- 10205233Aug 5, 2013Mobile phone cotacts are not transferred completely.
- 10167563Jul 8, 2013The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after…
- 10033116Apr 1, 2011Mercedes: replace the camshaft adjustment solenoid(s) and install adapter harness(es). Due to the settling properties of the seal of the camshaft adjustment solenoid…
- 10028586Feb 27, 2009Mercedes vehicle: the srs indicator lamp is illuminated and code b1058 and b2dbo are stored, replace the srs control unit. Models 203 and model 209. Model years unknown.
Electrical system: other model years
Other parts of the 2004 Mercedes-Benz C240
5 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsAir bags
2 complaintsBrakes
2 complaintsEngine cooling
2 complaintsFuel system
2 complaintsLatches, locks and linkages
2 complaintsSeat belts
2 complaintsSeats
2 complaintsTransmission and drivetrain
2 complaintsSuspension
1 complaints
← All problems reported for the 2004 Mercedes-Benz C240
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology