51 22 090 Removing and installing/replacing door lock in left or right rear door: Notes

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Special tools required:

512190

Necessary preliminary tasks:

Close window in rear door
Remove function carrier, refer to 51 22 035 REMOVING AND INSTALLING FUNCTION CARRIER (WITHOUT ROLLER SUN BLIND) ON LEFT OR RIGHT REAR DOOR or 51 22 435 REMOVING AND INSTALLING FUNCTION CARRIER (WITH ROLLER SUN BLIND) ON LEFT OR RIGHT REAR DOOR
Remove reflector from door, refer to 51 21... Replacing door reflector

Build date up to 09/2004:

Feed out fibre optics cable.

Fig 1: Feeding Out Fibre Optics Cable

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Feed out Bowden cable on carrier.

Fig 2: Feeding Out Bowden Cable

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NOTE: Only fit clip (3) on Bowden cable with blue sealing cap.

IMPORTANT: Do not damage door lock seal when removing.

Unclip lock knob control rod (1).

Release screws (2).

Remove door lock from inside (twist out).

Fig 3: Removing Door Lock

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IMPORTANT: To avoid leakage and electrical malfunction, pull door lock with special tool 51 2 190 into corner (3), refer to next work step.
Door lock must be at zero current with Soft Close Automatic (risk of damage).

Installation:

Install door lock and insert screws (1), do not tighten down.
Slide special tool 51 2 190M into opened rotary latch until latch engages in first stage.

Fig 4: Installing Door Lock

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Installation:

Pretension door lock (1) with knurled screw (2) until special tool 51 2 190 just contacts corner points (3).

IMPORTANT: To tension door lock (1), it is only permitted to turn knurled screw (2) by a further 1 to 1.5 turns (max.) (risk of damage).
Door lock seal must be uniformly positioned (water ingress).

Tighten down door lock screws (1), tightening torque 51 22 1AZ. Refer to BODY EQUIPMENT - TIGHTENING TORQUES .

Fig 5: Tightening Down Door Lock Screws

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Installation:

Seal (1) must not be damaged.

Door lock must be replaced if seal (1) is faulty.

Fig 6: Identifying Seal

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Build date up to 09/2004:

Installation:

Fibre optics cable (1) must be routed below bridge (2).

Fig 7: Identifying Fibre Optics Cable

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