This reply comes a bit late but check this post.
http://www.xoutpost.com/bmw-sav-foru...-fix-pics.html

When you refitted the new door lock perhaps you clipped the bowden cable too tight.
There are two fixing points A and B below. Position A will give the cable a bit more slack to allow the mechanism to spring home fully. If it does not spring home fully - the lock cannot reset and then cannot be opened by either of the handles.

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Cheers, Brian

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2001 X5 4.4i Sport
Black Sapphire, Hi Gloss Shadowline, Full Privacy Glass.
Too Cool for Jack Bauer