51 21 090 Removing And Installing/Replacing Door Lock In Left Or Right Front Door

WARNING: This page is about a different car, the 2005 BMW 760Li, 2004 BMW 760i, 2004 BMW 760Li, and 2003 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see BODY EQUIPMENT - SPECIAL TOOLS .

Special Tools Required:

51 2 190

Necessary Preliminary Tasks:

Close window in front door.
Remove function carrier. Refer to 51 21 035 REMOVING AND INSTALLING/REPLACING FUNCTION CARRIER ON LEFT OR RIGHT FRONT DOOR .

Feed out Bowden cable on carrier.

Fig 1: View Of Bowden Cable In Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not damage door lock seal when removing.

Unclip lock knob control rod (1).

Release screws (2).

Remove door lock from inside with drive facing forwards (twist out).

IMPORTANT: To avoid leakage and electrical malfunction, pull door lock with special tool 51 2 190 into corner (3).

Door lock must be at zero current with Soft Close Automatic (risk of damage).

Fig 2: Locating Lock Knob Control Rod

Courtesy of BMW OF NORTH AMERICA, INC.

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 3: Identifying Door Lock Tensioner In Rotary Latch
Courtesy of BMW OF NORTH AMERICA, INC.

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 be uniformly positioned (water ingress).

Tighten down door lock screws (1), tightening torque, refer to 51 21 1AZ in BODY EQUIPMENT - TIGHTENING TORQUES .

Fig 4: Tightening Door Lock Screws
Courtesy of BMW OF NORTH AMERICA, INC.