51 21 090 Removing and installing/replacing door lock on front left or right door (Z3 Roadster, M Roadster, Z3 Coupe, M Coupe)

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

Removing front door window, refer to 51 32 170 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT DOOR WINDOWS (Z3 ROADSTER) .

Unscrew bolt. Unhook door opener on linkage and remove.

Fig 1: Removing Door Opener On Linkage

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten lower screw on window guide rail.

Fig 2: Removing Lower Screw On Window Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolt (1). Twist window guide rail (2) towards door hinge and remove through aperture in metal panel.

Fig 3: Removing Window Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Fit muckets (1) and (2) to window guide rail (3).

Fig 4: Installing Window Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws.

Installation:

Install screws with Loctite 270.

Tightening Torque, 51 21 1AZ. Refer to 51 21 FRONT DOOR LOCKS .

Fig 5: Installing Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip retainer (1) and lift out linkage (2).

Lift door lock (3) up slightly and disconnect linkage (4) from outside door handle.

Remove door lock downwards.

Fig 6: Removing Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Insert frame for catch button through opening in inner door panel. Do not bend linkage.

Lift cable (1) out of brackets (2) on door lock (3).

Fig 7: Removing Brackets On Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten connector (1) and remove door lock (2).

Fig 8: Removing Connector And Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The operation "Removing lock from front door" ends here.

Only replacement (central locking drive):

Lift out lock and remove actuator drive (1) from central locking mechanism.

Installation:

Check actuating rod (2), locking rod (3), clip and cable tie (4) for wear and replace if necessary.

Check function.

Fig 9: Removing Actuator Drive From Central Locking Mechanism

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The operation "Replacing switch on front door" ends here.

Only replacement (door lock):

Lift out lock and remove actuator drive (1) from central locking mechanism.

Disconnect actuating rod (2) and locking rod (3). Replace clip and cable tie (4).

Fig 10: Removing Actuating Rod And Locking Rod

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check function.