51 21 035 Removing And Installing/Replacing Function Carrier On Left Or Right Front Door

Necessary preliminary tasks:

IMPORTANT:

Risk of mixing up plugs for door lock and control unit!

Mark relevant plugs prior to removal.

Disconnect BOWDEN CABLE (1).

Disconnect plug connections (2).

Disconnect cable holder (3); if necessary, release cable tie.

Feed out door wiring harness through wiring harness opening (4).

Fig 1: Identifying Wiring Harness Opening, Cable Holder And Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Release quick-release couplings.

Remove function carrier.

Installation:

If necessary, replace defective quick-release couplings.

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

Quick-release coupling 1.8 mm grey
Quick-release coupling 0.8 mm white

Fig 2: Releasing Quick-Release Couplings
Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Seal on function carrier (sound insulation) must not be damaged.

Fig 3: Identifying Function Carrier (Sound Insulation)

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