51 21 090 Removing And Installing/Replacing Door Lock In Left Or Right Front Door

WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. 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 rear section of power window unit . See 51 33 000 REMOVING AND INSTALLING (REPLACING) POWER WINDOW UNIT IN LEFT OR RIGHT FRONT DOOR .

Driver's side only:

Remove cover on outside handle . See 51 21 181 REMOVING AND INSTALLING/REPLACING COVER ON OUTSIDE HANDLE WITH LOCK CYLINDER .

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

If necessary, release cable holder on 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: Identifying Bowden Cable And Cable Holder

Courtesy of BMW OF NORTH AMERICA, INC.

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

Unclip lock knob control rod (1).

Unlock and disconnect plug connection (2) at lugs (3).

Fig 2: Identifying Lock Knob Control Rod And Plug Connection

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Version with Soft Close Automatic doors:

Disconnect plug connection (1).

Release bolts (2).

Fig 3: Identifying Plug Connection Bolts

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IMPORTANT: Do not damage door lock seal when removing.

Release screws (1).

Remove door lock (2) from inside.

IMPORTANT: To avoid leaking and electrical malfunction:
Pull door lock (2) with special tool into corner (3), refer to illustrations R51381 and R51594.

Fig 4: Identifying Screws And Door Lock

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Installation:

Seal (1) on door lock (2) must not be damaged.

Fig 5: Identifying Seal On Door Lock

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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 latch until latch engages in first stage.

Fig 6: Identifying Special Tool (51 2 190)
Courtesy of BMW OF NORTH AMERICA, INC.

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 rest uniformly on inner door plate (water ingress).

Fig 7: Identifying Door Lock And Knurled Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down door lock screws.
Tightening torque. See BODY EQUIPMENT - TIGHTENING TORQUES .