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

NOTE:

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

Special Tools Required:

Necessary Preliminary Tasks:

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.