51 21 090 Removing and installing/replacing door lock on left or right front door

Remove front door trim panel, refer to 51 41 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT DOOR TRIM PANEL .

Remove outside handle, refer to 51 21 170 REMOVING AND INSTALLING OR REPLACING OUTSIDE HANDLE FROM LEFT OR RIGHT FRONT DOOR .

Version with side airbag in front door:

Partially detach sound insulation at rear and secure with adhesive tape (1).

Fig 1: Partially Detach Sound Insulation

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Remove connector (drive on door locking unit) by pulling downwards and backwards.

Fig 2: Removing Drive On Door Locking Unit Connector

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Disconnect Bowden cable nipple (1) and Bowden cable guide (2) from door lock (3).

Fig 3: Disconnecting Bowden Cable Nipple & Bowden Cable Guide

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Unplug plug connection (micro-switch).

Fig 4: Identifying Micro-Switch Plug Connection

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Unfasten clip (1) (Bowden cable on inside door handle).

Unfasten screws and pull door lock downwards to remove.

Fig 5: Removing Door Lock Screws

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Installation: 

Lug on support (for paddle) must be located bottom center.

Fig 6: Turn Lug On Support To Bottom Center

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Installation: 

Carefully insert support (1) (for paddle) on door lock carefully upwards into paddle (2) (lock cylinder).

Fig 7: Inserting Support On Door Lock

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Only replace:

Lift out locking unit (1) and pull drive (2) (door locking unit) upwards from door lock.

Fig 8: Removing Locking Unit

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Only replace:

Disconnect rods (1) and (2).

Fig 9: Disconnecting Rods

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Only replace:

If necessary, unfasten screws.

If necessary, remove retaining plate (1) and lift out micro-switch (2).

Fig 10: Removing Micro-Switch

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