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Old 01-29-2004, 06:17 PM
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Join Date: Jan 2004
Location: Southern California
Posts: 1
Unhappy 600 SEL Engine Harness (ASR) Problems

I could use some help I am having problems with my ASR and someone told me that the engine harness could be the cause of 90% of all my problems I have been having with my car that the harness is bio degradable from the factory and that I should have replaced my harness years ago if this is true let me know and also were I can go to get a new harness with out having to mortgage my home to do so.. I know the harness is only 350.00 from dealer, but after spending over 12,000.00 in the past 6 months on this car trying to fix all the codes I am running out of money. Thanks
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Old 01-29-2004, 07:47 PM
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
If your 600SEL is a 1993, 1994, or 1995 model, then the wiring harness is certainly bad (or going bad) if it is original.

However, it could be more than just your engine wiring harness.

Your engine has a throttle actuator (maybe two, I'm not sure), which has a wiring harness which suffers the same fate. And, the ASR function is one of the functions controlled by the throttle actuator.

What shop are you taking your car to, by the way?

I live in Diamond Bar, and drive 51 miles (one way) to a shop in the San Fernando Valley called Mr. MB Motors. Do a search on Mr. MB Motors, and you will find a large number of guys who take their cars to him all over the area. His knowledge is such that the local MB dealers take cars to him that they can't diagnose.
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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Old 01-29-2004, 11:48 PM
wbain5280's Avatar
Registered User
Join Date: May 2001
Location: Northern Va.
Posts: 3,386
Check for crumbling insulation and bare wires. This same thing happened to my 1986 Volvo 740 Turbo. After replacing the harness I was suprised the car would even run. LOTS of bare wire under inside the covers.

$12K. Wow.


Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL


Not part of the in-crowd since 1952.
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