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.Google+
Car Problem Reports
Mercedes-Benz C220 Insulation Degrades on Engine Wiring Harness and Leaves Conductors Exposed
Mercedes-Benz C220 Problem
Average Mileage: 152,608 mi (72,000 mi - 276,000 mi)
Visitor, 1994 Mercedes-Benz C220, 99,700 mi
Rough idle, engine misfires above 3000 rpm. Inspected wire harness and noted degraded wire insulation causing intermittent shorts throughout the entire harness. Dealer wanted $800 for the harness and 5 hours labor at $130 per hour, I purchased the Mercedes OEM harness through ECS Tuning (www.ecstuning.com) for $608 and installed it in 6 hours. Fired right up and runs smooth as new.
Visitor, 1996 Mercedes-Benz C220, 153,000 mi
engine wiring harness failure. Had car since new, 100% services and wanted to keep but it is worth $2500 whoesale but cost is excessive to replace wiring harness. what is cheapest fix?
Visitor, 1996 Mercedes-Benz C220, 180,000 mi
wiring harness degrading
Dealer inspection found CHECK ENGINE WARNING LIGHT- PIA ENGINE WIRING HARNESS (BADLY CORRODED INSULATION)
$965.25 parts, $780 labor = $1745.25
Blue book private party value for car is only about $2500
Will look for a less expensive fix--perhaps ecstuning.com $608 for part plus 6 hours self labor, as noted below.
Visitor, 1995 Mercedes-Benz C220
insulation was coming off wiring of the C220. Engine and transmission wiring harness needed to be replaced.
Visitor, 1996 Mercedes-Benz C220, 200,000 mi
I'm driving my Mercedes Benz C220, 1996 and suddenly the engine stops.
When I try to start the engine again, the alarm lights are activated in the rearview mirror and the engine will not start.
Since I put duct tape on the broken wires arness engine, and continuous failure.
Anyone know if the proble is alarm or cable insulation,
Visitor, 1994 Mercedes-Benz C220, 72,000 mi
I noticed my c220 1995 model had difficulty in running. later we observed it was on plug 2 and 3 that were firing so i replaced the coil. Shortly after that the same problem started again so i changed the air flow meter to no avail. But i later found out that my amnestic cable was bad because the insulators were flaking off so i changed the entire cable. Unfortunately for me the car entirely stopped running only to be told my brain box has gone bad. Now i have tried getting a new brain box of same cord number but the car would not run. A different cord was discovered to run with it but running is not smooth and temperature rises above normal. This is giving me serious heart ache and i know not what to do next.
Visitor, 1996 Mercedes-Benz C220, 120,000 mi
Needs a new wire harness
Visitor, 1996 Mercedes-Benz C220, 99,988 mi
Replaced the wire harness, when touching the old wires they would turn to powder
Visitor, 1995 Mercedes-Benz C220, 252,000 mi
i almost died on the freeway when the car stopped in the fastlane and a car hit me due to the wiring harness being faulty. MB needs to acknowledge this and make it a recall the cheapest i seen the parts for is $450 on ebay