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Home >> BMW >> 2009 >> M3 2D Convertible, Automatic DCT >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 66 (Body Equipment - Repair - E90) >> Rear Door Locks, Handles, Fittings >> 51 22 090 Removing and installing/replacing door lock in left or right rear door

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

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks: 

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 Plug Connection At Lugs
G06202582Courtesy of BMW OF NORTH AMERICA, INC.

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
G06202569Courtesy 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:
Fig 3: Pulling Door Lock Using Special Tool Into Corner
G04749714Courtesy of BMW OF NORTH AMERICA, INC.

Pull door lock (2) with special tool into corner (3), see Figs.

R51 3381 and R51 7594.

Installation: 

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

Fig 4: Identifying Gasket And Door Lock
G04749715Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Fig 5: Installing Door Lock
G04749716Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

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 6: Installing Door Lock Using Special Tool (51 2 190)
G04749717Courtesy of BMW OF NORTH AMERICA, INC.