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

Special tools required: 

• 51 2 190 

Necessary preliminary tasks: 

• Refer to REMOVING SOUND INSULATION IN FRONT DOOR .

Disengage Bowden cable (2) from outer door handle at marked position.

Installation note: 

Driver's side only: 

Make sure locking pin (1) is correctly seated in mounting of door lock (3).

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Lever out locking rod (1).

Unfasten plug connection (2) and disconnect.

Release screws (3).

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Only with driver's door: 

Disengage door lock (1) at locking pin (2).

Installation note: 

Make sure locking pin (2) is correctly seated in mount (3).

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Turn door lock (1) as shown and maneuver out below door reinforcement (2).

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Installation note: 

Schematic diagram of removed support for outer door handle.

For it to be possible to install the door lock, locking pin (1) must be in the installation position on the support (2).

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Installation note: 

Install door lock (1) and screw in screws (2) but to not tighten.

Slide special tool 51 2 190  into opened rotary striker until striker engages in first stage

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Installation note: 

Pre-tension door lock (1) with knurled screw (2) until special tool 51 2 190  just contacts corner points (3)

Tighten screws of door lock (1).

Observe tightening sequence: bottom - top - inner.

Tightening torque 51 21 1AZ .

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