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Mercedes-Benz 500SEL Problems

Electrical Issues Due to Degraded Engine Wiring Harness on Mercedes-Benz 500SEL

Problem Description and Possible Solution

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.

(5 people reported this problem)

Mercedes-Benz 500SEL Vehicles With This Problem

RepairPal Verified
Average mileage: 90,000 (90,000–90,000)
2 model years affected: 1992, 1993
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Brake problem? Or maybe a faulty head gasket cylinder?
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