Wiring Problems of Mercedes Benz E300

The engine wiring harness was made with biodegradable insulation that has cracked and fallen off the the wires causing short circuits in the glow plug system.

Electrical wiring and other plastic tubing damage from rodents while car is stationary on city street.

See all problems of the 2018 Mercedes Benz E300 🔎.

All of the wire insulation on the main engine wiring harness had decayed. Severe risk of fire. Apparently mercedes-benz used bio-degradable wire insulation. When exposed to the heat that is in the engine bay, the coating covering the wires disintegrates. Vehicle has 90,000 miles, original owner, no accidents.

The wiring insulation inside of the headlight has degraded and crumbled leaving only the bare copper wire showing. These wires have shorted going over bumps causing a loss of light to occur.

See all problems of the 1999 Mercedes Benz E300 🔎.

The insulation on the engine glowplug wiring harness has deteriorated leaving the covering in dust exposing bare wires that short out and cause malfunctions. Mbusa was contacted and the only response was to get a location. I inquired a second time but got no response except a new harness was $565 at local dealer.

The contact owns a 2009 Mercedes Benz E300. While parked, the brake warning light illuminated on the instrument panel. The contact inspected the vehicle and noticed that the wiring harness was overheating on the passenger side, causing the circuit board and wires to melt. The driver side had a black hole developing in the circuit board. The vehicle was taken to the dealer for diagnostics. The technician stated that the wiring harness and circuit board would have to be replaced. The vehicle was not repaired. The VIN was not available. The approximate failure mileage was 40,000. Kmj.

See all problems of the 2009 Mercedes Benz E300 🔎.