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Old 03-11-2002, 08:49 PM
suginami suginami is offline
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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.
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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".
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