1993 Mercedes-Benz 300E Electrical system Problems

“My entire wiring harness has crumbling insulation, and this appears to be a very widespread problem. This obviously could lead to engine fires, stalling, sudden acceleration, loss of power, etc. My vehicle has stalled several times on the freeway and in the middle of intersections. This problem is heavily documented on the internet with all 91-96 mercedes models.”

“I purchased this vehicle as the second owner. The vehicle appeared to be in near mint condition cosmetically as well as mechanically. Upon inspection my local mechanic determined that the engine and battery wiring harnesses were deteriorating, causing multiple problems including surging/rough idle, shorting of electrical components, intermittent poor performance and risk of fire/crash/injury. After this incident the vehicle quit running for a few days and sat. …”

“I have been an ardent supporter of the Mercedes-Benz line for many years and models. Currently I own a 1993 300se and my summer car, a 1978 450sl. Both of my cars are maintained to the highest of standards, it is not a exaggeration to say that you could eat off the engine compartment of either car. Which is why I am extremely disappointed in the following chain of events: problem: 1993 mercedes benz 300se engine wiring harness and throttle actuator wiring . The wire insulation used on the engine wiring harness and the throttle actuator in my car has badly degraded, and is crumbling! …”

“Purchased 1993 mercedes benz 300E and it developed engine miss. Took to mechanic for tune up and was advised that unable to tune up due to engine wiring harness insulation disintegration. A common defect with these models since they were new. That it was a manufacturers defect. Called mercedes benz USA and was advised to tow car to nearest mercedes dealer ( romano mercedes fayetteville ny) for inspection . They inspected and found insulation in harness to be bad, and said they would replace it for $2600.00. We then called mercedes USA back and they deny problem and help. …”

“The contact owns a 1992 mercedes benz 300E (na). The contact stated that while in park, the vehicle failed to start intermittently. The contact was unsure what warning light illuminated. The vehicle was taken to a dealer who diagnosed that the starter and the rear struts needed to be replaced. The vehicle was repaired. However, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was 46,690.”