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

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.

Lever out cap (1) and release screw underneath.

Installation:

If necessary, replace faulty trim (1).

Fig 1: Identifying Faulty Trim

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Insert ignition key into lock cylinder.

Turn ignition key slightly and pull off cover (1) in direction of arrow with outside door handle (2) opened slightly.

Installation:

Lock cylinder must be correctly seated in door lock.

Check function of lock cylinder.

Fig 2: Identifying Outside Door Handle

Courtesy of BMW OF NORTH AMERICA, INC.

Version with light package:

Installation:

Make sure outside door handle light (1) is correctly positioned in area (2).

Guides (3) of outside door handle light (1) must be correctly seated in carrier for outside door handle (4).

Fig 3: Identifying Guides & Door Handle Light

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

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 4: Identifying Catches, Cover & Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.