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Old 12-08-2012, 07:03 AM
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jvr826 jvr826 is offline
Is it Trackday yet?
Location: In the woods. Santa Cruz County, CA
 
Join Date: Apr 2002
Posts: 8,867
Mein Auto: 05 330ci 6MT
There is a physical connection between the lock cylinder and the electronic actuator which is easy to check without removing the door panel. I'd start there...

Here's a great thread on the topic:
http://www.bmwenthusiasts.co.uk/foru...php?f=55&t=941

To remove the key mechanism from the door is quite easy. There is a black rubberized covering inside the door (striker side) that hides an access hole to the retaining screw. This image from a Fanatics thread shows how to access it:

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