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:

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

Disconnect Bowden cable at bottom (1) and top (3) from door lock (2).

Installation:

Bowden cable must be correctly engaged in locators in door lock (2).

Bowden cable must be laid without kinks in bend to door lock (2).

Seal (4) must be correctly fitted on Bowden cable.

Fig 1: Disconnecting Bowden Cable

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IMPORTANT: Door can not be opened if Bowden cable (1) is incorrectly laid.

Unclip locking rod (1).

Fig 2: Identifying Locking Rod

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Version with Soft Close Automatic:

Disconnect plug connection (1).

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 Soft Close Automatic.

Fig 4: Identifying Door, Lock And Screws

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Installation:

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

Fig 5: Locating Seal And Door Lock

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Installation:

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 Soft Close Automatic Drive, Bowden Cable, Control Line And Guide

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Installation:

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:

Pre-tension 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 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 plate (water ingress).

Fig 8: Installing Door Lock Seal Using Special Tool (51 2 190)

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Tighten down door lock screws, tightening torque 51 22 1AZ .