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 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. 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 Cap On Screw

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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 Cover And Outside Door Handle

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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, Outside Door Handle Light And Outside Door Handle (4)

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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 Paddle And Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.