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

Necessary preliminary tasks:

Partially raise window cavity cover strip and release screw (1).

Tightening torque 51 21 3AZ .

Release screws (2).

Tightening torque 51 21 4AZ .

Fig 1: Identifying Screws

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Position door lock (1) downwards a little.

Feed out lock cylinder (2) in area (A) and remove.

Installation:

Paddle (3) must be correctly inserted in door lock (1).

Fig 2: Removing Lock Cylinder

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Installation:

Make sure door lock is in the correct position when installing the paddle. Notch (1) must be located at the marking (2).

Fig 3: Identifying Lock Cylinder Notch And Marking

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Installation:

Paddle (1) on lock cylinder (2) must not be damaged or missing.

Fig 4: Identifying Paddle On Lock Cylinder

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