51 21 140 Removing and installing/replacing complete lock cylinder in left or right front door
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.
Operation is identical to:
Remove carrier for outside door handle with lock cylinder. Refer to 51 21 125 REMOVING AND INSTALLING/REPLACING CARRIER FOR LEFT OR RIGHT OUTSIDE DOOR HANDLE WITH LOCK CYLINDER .