51 21 140 Removing and installing/replacing complete lock barrel in left or right front door

WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2017 BMW M6, 2017 BMW 650i xDrive, 2017 BMW 650i, 2017 BMW 640i xDrive, and 2017 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove CARRIER FOR OUTER DOOR HANDLE

Release screws (1).

Remove gearing cover (2).

Fig 1: Identifying Gearing Cover And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Press down latch mechanism (1) slightly.

Turn lock cylinder (2) in direction of latch mechanism (1) and remove.

Fig 2: Removing Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.