Mercedes-Benz S500 Problem Report

Mercedes-Benz S500 Electrical Issues Due to Degraded Engine Wiring Harness

(17 reports)

The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.

my s500 sdn,starts good,when warms up idle starts to come down and it shots down,will not start,it will backfire when i try to start.after 30 to40 min,it get chance to cool down,car starts up and it is okay. till next cold start -
the heater never goes off even when the car is off and kills the battery the rear break lights don't work and the windshield wiper works when it wants -
Degraded cables are causing intermitent electrical failures. -
car won't start. -
insulation on engine wiring degraded. replaced with new updated harness -
check engine lite always on! -
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