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Old 04-02-2001, 07:23 AM
MBenzNL's Avatar
MBenzNL MBenzNL is offline
Join Date: Jan 2001
Location: the Netherlands
Posts: 1,417
The C class problem may be caused by a bad wire harness (engine related part of the wire harness).

The express windows can be reset as well; there is a procedure given for that in the following thread: Express Up/Down Conundrum on S-class .
Maybe it helps you solving the problem on the S420.

1990 300SL-24
1993 C250D
with a minor 600+k kilometer
(the Netherlands)
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