1994 Mercedes-Benz S Class Electrical system Problems

“Mercedes-benz engine wiring harness defect concerning the chronic engine compartment wiring harness failure suffered by (at least) 1992 through 1995 mercedes benz automobiles. I am outraged at Mercedes-Benz' refusal to take responsibility for this design defect. I do not understand why NHTSA has not investigated this dangerous fault, especially with the huge number of complaints. One starts to wonder if NHTSA has been paid to look the other way.”

“Two reputable independent mercedes mechanics informed me that the engine wiring harness insulation in my 1994 s420 is decaying which may have caused my lh control unit, and m.a.f to fail to malfunction and this problem is prevalent in mercedes vehicles made from 1991-1996. There should be a recall issued for this part before more serious events occur due to the flaw in mercedes manufacturing process from 1991-1996 .”

“I have a 1994 mercedes benz s600 the car is in good shape but it start stalling once I was pulling out in traffic I was almost a goner and the problem kept occurring and then I took it in to a mb mechanic to find out what's going on and it had many trouble codes but the problem was with the wire harness it was coming a part and causing shorts in fuel injection system this should have been a recall when I found out the number of people with the same problem.”

“Mercedes dealer repair shop reported to me that the wiring harness is made of biodegradable material and had to be replaced. The faulty harness caused several problems with engine, including acceleration. I had the part replaced in 2000 and do not have the original. Both catalytic converters went bad at 100,000 miles for no reason. Makes car run rough, especially on acceleration. Mercedes mechanic states it is a fire hazard, and cost to replace exceeds $2200. Should have been included in recall for later models. Suspension is bad in the rear even after parts have been replaced.”

“Instrument cluster dose not fully work. The temp gauge is the only one that works all the time. The rest of the time, the cluster may work for a time them stop functioning altogether.”