51 21 036 Replacing Function Carrier On Left Or Right Front Door

Overview of function carrier components: 

1. Control unit, door (door module)
2. Light module (build date up to 09/2004)
3. Sensor
4. Bowden cable
5. Speaker
6. Door wiring harness
7. Quick-release coupling grey 1.8 mm

   Quick-release coupling white 0.8 mm

   Fig 1: Identifying Speaker, Bowden Cable, Sensor, Light Module And Control Unit

   Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks: 

• Remove FRONT FUNCTION CARRIER 
• Remove CONTROL UNIT
• Remove SENSOR
• Remove SPEAKER
• Remove WIRING HARNESS

Build date up to 09/2004: 

• Remove LIGHT MODULE

Release clip.

Remove Bowden cable.

Remove sensor seal.

Installation: 

Insert pin (1) in outer bore.

Press out quick-release couplings.

Installation: 

Make sure quick-release couplings are installed in correct position.