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

Special tools required:

51 2 190

Necessary preliminary tasks:

Remove SOUND INSULATION

Installation note:

Check function of child safety catch, as problems may arise:

Lock does not center in body aperture
Lock scrapes on inner door panel
Lock snags on inner door panel

Detach Bowden cable (1) at bottom (A) and top (B) from door lock (3).

Installation note:

Sealing (2) must be correctly fitted on Bowden cable (1).

Bowden cable (1) must be correctly engaged in fixtures (A and B) on door lock (3).

Make sure Bowden cable (1) is in correct position!

An incorrectly routed Bowden cable can cause door locking system malfunctions.

Fig 1: Detaching Door Lock Bowden Cable

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Unclip locking rod (1).

Fig 2: Identifying Locking Rod

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Version with Soft Close Automatic:

Unfasten plug connection (1) and disconnect.

Unfasten screws (2).

Tightening torque 51 22 7AZ .

Fig 3: Identifying Plug Connection And Screws

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IMPORTANT: Do not damage door lock seal when removing.

Release screws (1).

Tightening torque 51 22 1AZ .

Remove door lock if necessary with automatic Soft Close system.

Fig 4: Identifying Door Lock And Screws

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Installation note:

Gasket (1) on door lock (3) must not be damaged.

Fig 5: Locating Door Lock Seal

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Installation note:

Version with Soft Close Automatic:

Make sure Soft Close Automatic drive (1) is installed in correct installation position.

Control line (3) must not be twisted around Bowden cable (2).

Make sure control line (3) is correctly laid in guides (4).

Fig 6: Identifying Automatic Soft Close System Drive, Bowden Cable And Control Line

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Installation note:

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

Fig 7: Sliding Special Tool (51 2 190) Into Opened Rotary Striker

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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)

Fig 8: Identifying Tension Door Lock With Knurled Screw

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

Tighten screws of door lock Observe tightening sequence: bottom - top - inner.

Tightening torque 51 22 1AZ .