51 21 003 Replacing Door Detent (Lock Striker), Front Left or Right
WARNING: This page is about a different car, the 2005 BMW 760i. However, it is still accessible from the selected car via links, so may be relevant.
Release screws (1) and remove door detent (3).
Installation:
Basic adjustment via crosswire on B-pillar (4) and notches (2) on door detent (3).
Tightening torque 51 21 3AZ . See 51 21 FRONT DOOR LOCKS
Adjust door detent. See 41 51 004 ADJUSTING LEFT OR RIGHT FRONT DOOR