51 21 125 Removing and installing/replacing support for left or right outer door handle with lock barrel

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

51 2 190

Necessary preliminary tasks:

Remove OUTER DOOR HANDLE
Partially remove front POWER WINDOW REGULATOR

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 Bowden Cable

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Unclip locking rod (1).

Fig 2: Identifying Locking Rod

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IMPORTANT: Do not damage door lock seal when removing.

Release screws (1).

Fig 3: Identifying Screws And Door Lock Seal

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

Carefully remove door lock (1) and set down carefully in door interior.

Installation note:

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

Fig 4: Identifying Door Lock And Locking Pin

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Pry out outside of interior weather strip (1).

Fig 5: Identifying Interior Weather Strip

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Release retaining screw (1).

Release screw (4) and take out protective cap (2).

Feed out support.

Installation note:

Align lock barrel and Align dummy plugs (2) with aid of retaining screw(1).

Rubber seal (3) must be correctly seated on lock barrel or dummy plug (2).

Fig 6: Identifying Retaining Screw, Protective Cap And Dummy Plugs

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Replacement

Feed Bowden cable (1) out of carrier (2).

Remove LOCK BARREL .

Fig 7: Identifying Bowden Cable And Carrier

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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 8: Installing Door Lock Screws
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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)

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 rest uniformly on inner door panel (water ingress).

Fig 9: Turning Knurled Screw

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Tighten down door lock screws, tightening torque 51 21 1AZ .