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

WARNING: This page is about a different car, the 2016 MINI Cooper Paceman, 2015 MINI Cooper Paceman, 2014 MINI Cooper Paceman, and 2013 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks:

Partially remove SOUND INSULATION (in area of door lock/rear guide rail, power window regulator)

Electrically move the door window glass until the brackets (1) are accessible via the opening on the window guide rail (2 and 3).

Press the brackets (1) toward the outside with a suitable tool and feed the door window glass out in upward direction.

Fig 1: Pressing Brackets Towards Outside With Suitable Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Secure the door window glass (1) approx. 7 cm before the closed position with the special tool 00 9 314 .

Release the nuts (2) on the rear guide rail (3).

Tightening torque 51 33 1AZ .

Feed out the rear guide rail (3) at the bottom and swivel in direction of arrow.

Fig 2: Removing Rear Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation note:

Bowden cable must be correctly engaged in fixture at bottom (1) and top (3) of door lock (2).

Fig 3: Disconnecting Bowden Cable From Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip locking rod (1).

Unfasten plug connection (2) and disconnect.

Release screws (3).

Feed out the door lock (4) between the inner door panel and rear guide rail.

Fig 4: Identifying Door Lock, Locking Rod, Screws, And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Only for door with lock barrel:

Feed in paddle (1) of lock barrel correctly back into the door lock.

Fig 5: Identifying Lock Barrel Paddle

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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 6: 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 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).

Tighten screws of door lock
Tightening torque 51 21 4AZ .

Fig 7: Installing Door Lock Using Special Tool (51 2 190)

Courtesy of BMW OF NORTH AMERICA, INC.