Quote:
Originally Posted by warmblood58
Hello all - neighbor just picked up a '83 300D When driver door is unlocked from the outside, should all locks pop up unlocked? Also when in the car and I push down the driver door lock, all locks should go down(lock) yes? I put a mity vac on the main line going into car that controls all the door locks and could not pull a vacuum . . .. my first go round with door lock issues -
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Yes and Yes. It is probably a simple fix. You just need to find the leak.
Start by pulling vacuum on the storage reservoir and go from there. A common leak is at the "egg crate" where the line goes into the side (on the bottom of the rear deck in the trunk).
Color Diagram of lock system:
http://www.peachparts.com/shopforum/showthread.php?t=160169