Electrical Issues Due to Degraded Engine Wiring Harness on Mercedes-Benz S320

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.

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Average mileage: 105,221 (60,000–145,549)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
13 people reported this problem
7 people shared problem details
Wiring insulation degrades and bare wires exposed leading to shorts in various electrical components
Engine cuts out while driving. Must be restarted.
Mass air sensor meter harness is falling apart.
Caused melted wires and shorting of mirror and fuse box All replaced
deteriorated wire insulation causing drivebavility issues replaced with new wire harnnes
Running rough. Had to replace wiring harness.
Wiring harness decayed and needed replacement
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