Your dealership is wrong.

The dreaded engine wiring harnesses are bad on M104 engines from 1993-1995, which would be:

1993 300E (3.2)
1993 300E 2.8
1994-1995 E320

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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".