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Old 03-11-2002, 07:49 PM
suginami suginami is offline
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
Mercedes has always used vacuum operated door locks. A long time ago, they were mechanically operated. Your system is an electrically operated vacuum pump. Your pump may be bad, or one of the electrical switches may be bad.

I have a W124, and the pump is located under the rear seat.

Good luck.
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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