51 21 140 Removing And Installing/Replacing Complete Lock Cylinder In Left Or Right Front Door: Replacement

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Remove catches (1) and detach cover (2) from lock cylinder (3).

Installation:

Catches (1) of cover (2) must not be damaged.

Paddle (4) of lock cylinder (3) must not be damaged.

Fig 1: Removing Catches & Detach Cover From Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.