51 21 003 Replacing door detent (lock striker), front left or right
WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. 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, refer to 51 21 3AZ in BODY EQUIPMENT - TIGHTENING TORQUES - 545I (4.4L) E60 .
Adjust door detent.