51 22 090 Removing and installing/replacing door lock on left or right rear door

Raise the door window.

Remove sound insulation on rear door. Refer to 51 48 ... REMOVING AND INSTALLING/REPLACING SOUND INSULATION IN REAR DOOR, LEFT OR RIGHT .

Disconnect plug connection (1) on door lock (2).

Unclip ball head (1).

Detach Bowden cable (2) from support (2) on door lock.

Release screws (1).

Remove door lock (2) with linkage (3).

Installation: 

Insert linkage for locking knob through opening in inner door plate.

Do not bend linkage (3).

Replace screws (1).

Tightening torque, (9 N.m.).

Installation: 

Carry out function check only with door open.

• Close rotary latch lock (1) with a screwdriver.
• Lock car with car key.
• Unlock car with car key.
• Open rotary latch lock (1) with outside door handle.
• If rotary latch lock opens, then O.K.
• If rotary latch lock fails to open:
• A new lock actuator must be fitted.

Only replacement:

Lift out lock (1) and detach Bowden cable (2) from fixture (3).

Remove Bowden cable nipple (4) from lever (5).

Only Replacement: 

Unclip linkage for locking knob (2) from support (1) and feed out of guide (3).

Installation: 

Following parts must not be damaged or missing:

1. Spring.
2. Support for Bowden cable of lock plate.
3. Mount for linkage of locking knob.
4. Lever for child safety catch.