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

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

51 2 190

See BODY EQUIPMENT - SPECIAL TOOLS (CONVERTIBLE/COUPE) or BODY EQUIPMENT - SPECIAL TOOLS (SEDAN) .

Necessary preliminary tasks:

Remove sound insulation .

Unlock and disconnect plug connection (2) at lugs (1).

Unhook Bowden cable (3) from door lock (4).

Unclip lock knob control rod (5).

Fig 1: Identifying Lock Knob Control Rod

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Unhook Bowden cable (1) from door lock (2).

If necessary, release cable holder on door lock (2).

Installation:

Bowden cable (1) must be correctly engaged in locators in door lock (2).

Bowden cable (1) must be laid without kinks in bend to door lock (2).

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

Fig 2: Identifying Bowden Cable And Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not damage door lock seal during removal.

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), see Fig 5 and Fig 6.

Fig 3: Identifying Door Lock And Corner

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Installation:

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

Fig 4: Identifying Seal And 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 5: Identifying Door Lock And Screws

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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).

Tighten down door lock screws, tightening torque 51 22 1AZ , see 51 22 REAR DOOR LOCKS .

Fig 6: Identifying Door Lock And Knurled Screw

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Installation:

Check function of child lock (1) on door lock (2).

Fig 7: Identifying Child Lock And Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.