Electrical complaints by model year
Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
What owners report
Right rear tail lamp assembly. Lights appeared dim for a couple months and figured lights were about it go out. Went to buy new light bulbs to replace the dimming bulbs and when I opened the right side to install the light I noticed the electrical cord attached to the assembly had melted. Lights were still dim and checked to see what it sounded like when I turned the lights on and it makes a crackling electrical sound. I assume that's why it smelt like something was burning and why the 8 prong piece melted. 1-6 on the electrical piece look good. 7 is damaged due to number 8 completely melting off.
Tl* the contact owns a 2008 Mercedes c Class. The contact stated that another vehicle crashed into the contact's front end. The vehicle was repaired but one month later, the electrical system failed. The vehicle was towed to the dealer for inspection and they stated that the ignition switch and steering column needed to be replaced. The vehicle was not repaired. The manufacturer was notified and they stated that the vehicle was not included in NHTSA campaign number: 08V303000 (electrical system). The failure mileage was 48,000.
My Mercedes-Benz c-240 (2003 model), having less than 18500 miles, suddenly lost power after some 2-hour worth of free-way driving. Around noon on Friday, 8/26/05, I was driving south -bound on I-15 past victorville (ca), about 9 miles past the exit for route 18, when my c-240 suddenly lost power. As I depressed the accelerator, I felt no power and the RPM was decreasing. It felt like the entire engine-transmission system was shutting down. There was no prior warning. I made right turn signal letting other vehicles know I was coming off the free-way. I managed to pull off to the right shoulder safely and came to full stop on the gravel. At that time, my digital odometer read "1 malfunction". Using my cell phone, I immediately called the Mercedes hotline. …
I own a 2003 Mercedes c240 station wagon with about 42000 miles, a few days ago I observed some messages on dash which seem to indicate alternator problem. My vehicle has not been heavily used and I am surprised to learn that a new alternator May be needed, this because a friend with c Class sedan has had the same issue just 2 weeks ago and cost him $1500 to replace the alternator & battery. I believe there May be many more folks that experienced the same situation and probably the c Class Mercedes are outfitted with faulty alternators and investigation May be in order here.
My wife drove the car in the morning, no problem. Early afternoon, she left to pick up our child, while leaving the neighborhood. The vehicle starting sending warning signs came on the dash that had never been seen before. Then thick smoke came out from under the steering wheel. My wife had to open her window. She then turned around to go back home prior to leaving the community. On the way back the car slammed on brakes by itself and cut itself off and said the vehicle had 7 faults. Ran up to a neighbors home, upon returning the vehicle was engulfed in flames and became a total loss. Police and fire marshal came to inspect the vehicle. Since then, we have had to track down merecedes Benz and basically have had no customer support whatsoever. We located the vehicle for Mercedes as they took their sweet time. …
Tl contact owns a 2002 Mercedes Benz c Class. While driving 35 MPH or higher, the ESP indicator light illuminated. The vehicle had been taken to the dealer and repaired once before for the same failure. The failure occurs intermittently while driving 35 MPH. The dealer stated that they will not order the parts and make the repair again. The failure mileage was 110,000. Updated 09/23/08 the consumer stated the vehicle stalled in braking mode.
Steering wheel loose and making noise when turning right or left, dealer found power steering pump leaking and was replaced. Next day engine light on,ABS system fails, ESP elec,stability,program fails, bas brake assist system fails, the car does not change gear and would not pick up speed eventhough I'm pressing hard on the gas pedal. Dealer attempted fixing the problem 4x and still there for the 5th time. Each time they find different causes like cracked thrust arms and was replaced. Then they said there's an open circuit at the right speed censor and they replaced right rear speed sensor.another cause found crankshaft position sensor open circuit.. Ignition system replaced.
Battery drain, seems to come from defect in seat controller module. See 19 pages of forum: http://www.benzworld.org/forums/w203-c-Class/1196568-Mercedes-c320-battery-drain-11.html Mercedes c240 2001, but many other models and years affected.
Related recalls (2)
Electrical system
Mercedes-Benz is recalling my 2006-2008 m-class, r-class, my 2005-2009 slk-class, my 2005-2008 c-class, my 2003-2004 and 2006-2008 clk-class, my 2003-2008 e-class, my 2004 and 2008 cl-class, my 2008 cls-class, my 2004 and 2007-2008 s-class, my 2003 g-class, and my 2003-2004, 2006 and 2009 sl-class vehicles.
Remedy: Dealers will recode the scn free of charge. The recall began on August 30, 2008. Owners May contact Mercedes-Benz at 1-800-367-6372.
Electrical system › 12V/24V/48V battery
Vehicle description: passenger vehicles equipped with hoppecke batteries. The battery maintenance schedule could be less than needed to maintain proper electrolyte levels.
Remedy: Dealers will inspect the batteries, including fluid levels. Some batteries May be replaced if necessary, on a case by case basis.
NHTSA investigations
Battery explosion
Loss of rear tail light functionality
ODI initially received 21 reports of rear light assembly failure due to a melted electrical connector or housing.Since opening the initial , ODI has received a total of 114 complaints reflecting an ongoing and increasing trend.In each report, one or both rear light assemblies fail completely (i.e., all lights housed within the assembly extinguish, including the stop, tail, and turn signal functions) when the…
Loss of rear lighting assembly
The Office of Defects Investigation (ODI) opened an investigation based on consumer allegations of loss of rear lighting in model year (MY) 2008-2011 Mercedes Benz C-Class vehicles.Complainants alleged that one or both rear lighting assemblies fail to illuminate (i.e., all lights housed within the assembly extinguish, including the stop, tail, and turn signal functions) or illuminate dimly.In some reports,…
Frequently asked questions
Which Mercedes-Benz C Class years have electrical problems?
By NHTSA complaints, the 1995 (45), 2002 (10), 2008 (7) and 1996 (5) model years. Electrical complaints make up 92% of all complaints for the 1995.
Is there a recall for Mercedes-Benz C Class electrical problems?
Yes — 2 recalls, including 08V-303 (electrical system, Jul 7, 2008); 01V-366 (12v/24v/48v battery, Dec 4, 2001). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Mercedes-Benz C Class electrical problems start?
Across all years, half of the complaints with a recorded mileage happened before about 91,000 miles; 18% happened before 50,000 miles.
What part fails most often?
Owners most often name the wiring › front underhood (18 mentions), followed by the wiring (14).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.