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 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Compact Only:

Lever out cover (1).

NOTE: 2 Cover for outside handle. 3 Cover for adjusting door lock.

Fig 1: Identifying Lever Out Cover

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Convertible/Coupe Only:

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

Fig 2: Identifying Cover (Coupe)

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Saloon/Sedan/Touring Only:

Lever out trim (1).

Fig 3: Removing Trim

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Installation:

Fit new plate (1).

Fig 4: Releasing Trim Screw
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All Models:

Release screw (1).

NOTE: Thread of screw (1):

M5 Build date from 09/00.

Removing cover (1) on outside handle:

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

Fig 5: Removing Cover On Outside Handle
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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

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Replacement only:

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

Fig 7: Removing Cover From Lock Cylinder

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Installation:

Catches (1) on cover (2) must not be damaged.

3 Lock cylinder

Fig 8: Locating Catches On Cover

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