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 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks

Remove OUTSIDE HANDLE ON FRONT DOOR

Release screws (1).

Remove gearing cover (2).

Fig 1: Identifying Gearing Cover With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Detach retaining clip (1).

Remove lock cylinder (2).

Fig 2: Detaching Retaining Clip

Courtesy of BMW OF NORTH AMERICA, INC.