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

Lever out cap (1) and release screw underneath.

Installation note: 

If necessary, replace faulty trim (1).

Fig 1: Identifying Barrel Cap
G04791597Courtesy of BMW OF NORTH AMERICA, INC.

Insert ignition key into lock barrel.

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

Installation note: 

Lock barrel must be correctly seated in door lock.

Check function of lock barrel.

Fig 2: Identifying Cover And Outside Door Handle
G04752620Courtesy of BMW OF NORTH AMERICA, INC.

Version with light package: 

Installation note: 

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 support for outer door handle (4).

Fig 3: Identifying Door Handle Light And Guides
G04727761Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Remove latch mechanisms (1) and detach cover (2) from lock barrel (3).

Installation note: 

Latch mechanisms (1) of cover (2) must not be damaged.

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

Fig 4: Removing Latch Mechanisms
G04752622Courtesy of BMW OF NORTH AMERICA, INC.


Lever out cap (1) and release screw underneath.

Installation note: 

If necessary, replace faulty trim (1).

Fig 1: Identifying Barrel Cap
G04791597Courtesy of BMW OF NORTH AMERICA, INC.

Insert ignition key into lock barrel.

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

Installation note: 

Lock barrel must be correctly seated in door lock.

Check function of lock barrel.

Fig 2: Identifying Cover And Outside Door Handle
G04752620Courtesy of BMW OF NORTH AMERICA, INC.

Version with light package: 

Installation note: 

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 support for outer door handle (4).

Fig 3: Identifying Door Handle Light And Guides
G04727761Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Remove latch mechanisms (1) and detach cover (2) from lock barrel (3).

Installation note: 

Latch mechanisms (1) of cover (2) must not be damaged.

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

Fig 4: Removing Latch Mechanisms
G04752622Courtesy of BMW OF NORTH AMERICA, INC.