51 21 090 Removing and installing/replacing door lock in left or right front door

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i 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 FRONT SOUND INSULATION

Driver's side only:

Remove LOCK BARREL LOCK BARREL

Removal:

Side window glass must be opened to dimension (A).

145 mm

Fig 1: Side Window Glass Opening Dimension
Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!
Do not bend mounting clips (1) too far.

Carefully unlock power window mounting clips (1) in direction of arrow.

Gently press door window glass (2) upwards to snap retaining lug completely out of door window glass bore hole (2).

Fig 2: Power Window Mounting Clips

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Slide door window glass (1) fully upwards and fix in the window frame with adhesive tape (2).

Fig 3: Door Window Glass And Adhesive Tape

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Release cable from holder in area (1).

Release nuts (2) and lay down window lift rail (3) in door.

Fig 4: Window Lift Rail And Nut

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NOTE: Graphic is similar.

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

IMPORTANT: If Bowden cable (1) is routed incorrectly, door can not be opened from the outside.

Fig 5: Disconnecting Bowden Cable From Door Lock

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Lever out locking rod (1).

Unfasten plug connection (2) and disconnect.

Release screws (3).

Remove door lock from inside.

Fig 6: Door Lock, Plug Connection And Locking Rod

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Installation:

IMPORTANT: Seal (1) on door lock (2) must not be damaged (water ingress)!

Fig 7: Door Lock Seal

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NOTE: Graphic is similar.

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

NOTE: Bowden cable must be correctly engaged in fixture of 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 8: Disconnecting Bowden Cable From Door Lock

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IMPORTANT: If Bowden cable (1) is routed incorrectly, door can not be opened from the outside.

NOTE: Install door lock (1) and screw in screws (2) but to not tighten.
Slide special tool 51 2 190 into opened rotary striker until striker engages in first stage

Fig 9: Installing Door Lock Screw

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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 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).

Fig 10: Installing Door Lock Using Special Tool (51 2 190)

Courtesy of BMW OF NORTH AMERICA, INC.

Lever in locking rod (1).

Lock plug connection (2).

Tighten screws of door lock (1).

Observe tightening sequence: bottom - top - inner.

Tightening torque: 51 21 1AZ .

Fig 11: Door Lock, Plug Connection And Locking Rod

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Clip in cable in area (1).

Feed in window lift rail (3) and secure nuts (2).

Tightening torque: 51 33 2AZ .

Fig 12: Window Lift Rail And Nut

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Gently press window glass (1) into the latch mechanism (2) towards bottom.

NOTE: Make sure the retaining lugs are correctly engaged in the door window glass bore hole.

Fig 13: Window Glass And Latch Mechanism

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Fit FRONT SOUND INSULATION