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Old 07-08-2015, 10:04 AM
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Join Date: Oct 2012
Posts: 55
1987 300SDL Doors Unlock When Revving

I have this odd thing going on with my central locking, it locks/unlocks everything with driver's door/trunk as it should. The problem is when the engine is running with doors locked, it unlocks by itself the moment I give it a little pedal.

There were times when I come back to the car after parking for a few hours and the doors were unlocked! - I always make sure the doors are locked before leaving the car.

I've isolated the problem to the driver's door since I can lock the others by hand and the problem won't occur if I leave the driver's door unlocked. I'm not sure where to go from here cos it may or may not be related to the engine rev.

Any ideas?
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