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

Compact only:

Lever out cover (1).

NOTE: (2) Cover for outside handle (3) Cover for adjusting door lock

Fig 1: Levering Out Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Convertible/coupe only:

Only lever out cover (1) to such an extent that bore (2) is accessible.

Fig 2: Levering Out Cover (1) To Such An Extent That Bore (2) Is Accessible

Courtesy of BMW OF NORTH AMERICA, INC.

Saloon/sedan/touring only:

Lever out trim (1).

Fig 3: Levering Out Trim

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

All models:

Release screw (1).

NOTE: Thread of screw (1): M6 Build date up to 09/00 M5 Build date from 09/00

Fig 4: Release Screw (1)

Courtesy of BMW OF NORTH AMERICA, INC.

Removing cover (1) on outside handle:

Pull cover (1) approx. 1 to 2 mm towards rear.
Detach cover (1) with lock cylinder (2) towards outside.

Fig 5: Removing Cover On Outside Handle
Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Notch (2) on paddle mount (1) must be secured in catch (3).

Only in this position will installation of the lock barrel be guaranteed.

Fig 6: Identifying Notch On Paddle Mount

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement only:

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

Fig 7: Detaching Cover From Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

(3) Lock cylinder

Fig 8: Installing Lock Cylinder Cover

Courtesy of BMW OF NORTH AMERICA, INC.