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

Special tools required:

51 2 190

Necessary preliminary tasks:

Remove REAR DOOR TRIM

Undo sound insulation (1) in marked area.

Fig 1: Identifying Sound Insulation

Courtesy of BMW OF NORTH AMERICA, INC.

Lay sound insulation (1) to the side in direction of arrow.

Fig 2: Moving Sound Insulation To Side

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Unclip lock knob control rod (5).

Fig 3: Identifying Plug Connection, Bowden Cable, Door Lock And Tabs

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Installation note:

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 4: Identifying Bowden Cable And Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

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), see illustrations.
R51 3381 and R51 7594.

Fig 5: Identifying Door Lock And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

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

Fig 6: Identifying Seal On Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

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 7: Sliding Special Tool (51 2 190) Into Opened Rotary Striker

Courtesy of BMW OF NORTH AMERICA, INC.

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 gasket must rest uniformly on inner door panel (water ingress).

Tighten down door lock screws, tightening torque 51 22 1AZ .

Fig 8: Installing Door Lock Using Special Tool (51 2 190)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

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

Fig 9: Checking Function Of Child Safety Catch On Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.