Mercedes Benz S500 owners have reported 6 problems related to wiring (under the electrical system category). The most recently reported issues are listed below.
The engine light on my 1995 mercedes coupe came on car with multiple codes and my mechanic could not find the issues. This month while driving the car with my daughters the car abruptly stopped at 35 miles per hour in heavy traffic almost caused an accident. Again on three different occasions the same thing happened and this time almost caused a rear end accident. I took the car to my mechanic again and after further evaluating he stated the wiring harness is crumbling and falling apart. I have done some research in this issue and come to find out that mercedes fabricated biodegradable wiring harness. This harness degrade overtime from access heat coming from the engine. I am now experiencing this issue. I think this situation is very dangerous and the government should make mercedes make a recall on this matter. This is the same situation that we have right now with gm and the so call unattended acceleration with Toyota. At this point I am hoping a resolution will come out of this. I don't want to drive a time bomb or exposed the public to this situation while driving. I f not I am willing to go to the media and bring attention to this matter. I want the NHTSA to step in bringing my complaint to mercedes.
Disintegrated wiring in all the wiring harnesses and is shorting out everything.
See
all problems of the 1996 Mercedes Benz S500
🔎.
While operating the vehicle on a two lane divided highway, the vehicle would not up-shift gears and got stuck in third gear while I was attempting to pass a tractor trailer with other vehicles behind me attempting to do the same. Subsequently, I managed to maneuver the vehicle to a parking lot to examine the issue. I could not find anything externally wrong with the vehicle that would stand out in a visual inspection. Next, I turned the ignition off and turned it back on, forcefully put the car in gear, and found that it would not shift out of first gear. Vehicle had to be towed over 150 miles to a shop. The problem stems from the design and materials used for the transmission wiring harness that enables transmission fluid to wick up the wiring harness from the bottom of the vehicle up into the transmission control unit that is encased in plastic and located under the hood. As impossible as it sounds, transmission fluid travels up this bundle of wires and pools in the encasement disrupting the electronic circuit board that controls the transmission. Equally confusing, the electric current from the wires pulls the transmission fluid up the wiring harness. I can't imagine why this design or materials would be utilized on this or any other car knowing what the ultimate outcome would be for consumers, $$$$$$$!!!!!!!!!!!!.
See
all problems of the 2001 Mercedes Benz S500
🔎.
License playe light out short causes srs light to come on and have to be reprogrammed. There is now an sis defective light due to the wiring. My truck does not power close. Happens at all times. And while turning it caused an error for turn lights.
See
all problems of the 2004 Mercedes Benz S500
🔎.
I never received a recall notice from mb that there was a recall in 2009 regarding exterior lighting and was not informed that the 1995 s series mercedes were recalled for the electrical harness. My vehicle's engine harness is completely burned out and deteriorated . Apparently Mercedes Benz knowingly installed biodegradeable inferior wire harnesses that disintegrate over time. The first effect of this faulty electrical harness caused the speedometer to stop working upon investigation by a local mb dealer for the speedometer, the service department indicated that the entire wiring was frayed and worn; that there were a lot of problems with the '95 mb vehicles, but did not indicate e there was a recall for the problem. According to NHTSA website it's noted that other mercedes owners have filed complaints about the same issue(s) and other mb owners of 1995 models were also not contacted about the recall and repair. Subsequently, in March 2013 my vehicle stopped running completely; the estimated at cost for installation and labor for the electrical harness is $1000. I strongly feel that Mercedes Benz should be held liable for this deficiency and malfunction and that the recall of the 1995 mb's should still be covered.
The electrical wiring for the car has failed. It has cost us thousands of dollars in repairs in the electrical system and in causing other problems and failures in other areas .