Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
39,061 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2002 Mercedes-Benz C240 electrical problems

electrical problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2002 Mercedes-Benz C240:

Unsubscribe any time. We don't sell/share your email.

2002 Mercedes-Benz C240 Owner Comments

problem #11

Aug 042015


  • 125,000 miles


The contact owns a 2002 Mercedes Benz C240. The contact stated that the vehicle failed to shift out of first gear and was leaking transmission fluid. In addition, the contact stated that the vehicle stalled without warning. The vehicle was towed to an independent mechanic where it was diagnosed that the transmission was leaking fluid in six different places and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 125,000.

- Salem, OR, USA

problem #10

Oct 032013


  • miles
I am not sure why Mercedes is doing this. I am sure the auto maker is aware of the situation and not doing anything about it. I have read numerous forums regarding the same issue. Electrical components not functioning properly. I demand Mercedes to do something about this problem and they can not get away clean hands just like any other auto makers. This are people lives you are playing with and you as a automaker have no remorse for people lives. This is not a movie where you can just calculate your collateral damage and get away. Will never buy Mercedes ever again. I am very disappointed. Its one issues after another. My car just stops on highway all of sudden loses power and have to turn it off and turn it on again. I had almost everything replaced in the car, spark plugs, alternator, battery(that went out 3 times). Oh don't get me started on the air conditioner - the parts are made so cheap that there is a little hook type thing that regulates the speed of the speed breaks so easily I cant believe it. Countless forum data exist and NHTSA doesn't do anything about it. Ban this automaker or tell them to give me a new car. Now I am looking to spend close to another $600-$1000 bucks to diagnose and replace parts. This is not a joke. Oh then there is that wheel bearing issue I mean come on my dad owns a Honda Accord older than mine all he has done to that car so far is oil change and regular maintenance. I demand some answer and possible compensation from the auto maker.

- Albuquerque, NM, USA

problem #9

May 172013

C240 6-cyl

  • 56,000 miles
Drivers power seat control module drains battery when auto is parked.

- Plano, TX, USA

problem #8

Mar 052011

C240 6-cyl

  • 90,000 miles


Mercedes Benz C240 ECU failure. Also the transmission shifts are sometimes random at best and sometimes shuts off. The cars instrument cluster also sometimes doesn't work, the power steering leaks intermittently the rear coil spring broke on left side of vehicle. The alternator was replaced so was the coil pack and other items by Mercedes but they always tried to justify that problem was normal wear and tear which is not true.

- Kissimmee, NJ, USA

problem #7

Mar 012008


  • 33,000 miles
Extensive electrical problems in 2002 CL500 Mercedes Benz. Vehicle seats move on their own while vehicle in motion. Windows go up and down on their own; lock in whatever position it chose; hydraulics in this vehicle go up and down at will. Vehicle will lean on one side, then drop to where it is undriveable, then raise on the opposite side. The key has decoded itself and would not start the vehicle. It has been replaced and the new key had to be recoded as it started the car and then would not start the car. Battery has been replaced more than once and the car still starts fine one day and not at all the next and then will be fine on the third day. I can go on and on. We have only owned this vehicle for 2 years and have spent in excess of $10,000 in repairs that do not repair this vehicle. I still have a very large balance on this nightmare of a "vehicle" but don't have anything to drive. It is presently being repaired for a window issue. It simply would not go up. When it did go up the window broke. Glass has been replaced, regulator replaced, motor replaced and now I am being told it is the control module. $1200 later I still have an open window and still trying to figure out the problem. Presently the dashboard middle console serve no purpose other than decoration since the lights go on and off at will also. The vehicle exterior lights (headlights, parking lights, turning signals) work when they choose to and we have replaced bulbs excessively just to find that there was never anything wrong with the bulbs. The electrical system in this car is a nightmare. These issues have been ongoing since we purchased this car. It had only 27,000 miles at the time of purchase however because it was a 2002, it had no manufacturers warranty. We purchased separate warranty which covered practically none of the issues mentioned because they were all "electrical". this vehicle has a class action lawsuit pending on the reed valve. Probably another issue.

- Virginia Beach, Va, VA, USA

problem #6

Dec 152008


  • miles
Seat controller modules, they constantly drain the battery when the car is off. This is a very very common problem with Mercedes C class. The controller drains the car battery to the point were the car cannot start, and continues to do this if the car is not driven everyday. Obviously having a car battery get sucked below 3V is not healthy for the battery, and in the end everyone with this problem has to replace their battery many many times.

- Rittman, OH, USA

problem #5

Aug 272008


  • 54,000 miles


Left rear of car sinks after sitting for more than 8 hours. Mercedes Benz has repaired many times but the problem still comes back. Repaired measures include replacing valves associated with the abc suspension, the abc pump has also been replaced and have also flushed the abc fluid and replaced the filter on many occasions. However, the problem has not gone away. Sometimes when the car is sitting for more than a day the active body control alarm comes on in the instrument cluster. I have not observed any abc fluid loss.

- Austin, TX, USA

problem #4

Mar 272007

C240 6-cyl

  • Automatic transmission
  • 65,000 miles
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. They did get an inspector there to view the vehicle but have yet to hear anything from them regarding this matter. We have contacted an attorney to protect us and want Mercedes to be held liable for this incident. Something was very wrong and we are grateful that no one was hurt.

- Matthews, NC, USA

problem #3

Jan 272003

C240 6-cyl

  • Automatic transmission
  • 6,670 miles
Esp & bas warning messages appeared on the message screen twice, once on 1-20-03 & again on 1-27-03, the first time dealer said it can happen if you didn't tighten the gas cap. On both occasions, the messages were gone the next day. On 1-27-03 I called rallye motors to tell them & I have an appt for March 10, 2003.

- Bayside, NY, USA

problem #2

Jul 152002


  • miles
Consumer was informed that the brain of the vehicle had given out, causing consumer to have to drive 30-40 mph on the interstate, vehicle also seems to have a possible electrical problem, the interior lights blink, the interior mirror lights work intermittently, the radio will turn on when the key is not in the ignition and at times the sunroof will not close.

- Espanola, NM, USA

problem #1

Apr 042002

(reported on)


  • miles
Consumer states there are problems concering the esp and bas systems warning messages that are appearing on the monitor, when traveling at a moderate rate of speed in a straight line, the vehicle loses all power along with braking sensation. (Mercedes Benz C-240)

- Houston, TX, USA

Not what you are looking for?