61 12 210 Replacing wiring harness in left or right rear door

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Close rear side window completely
Remove rear door trim panel . See 51 42 000 REMOVING AND INSTALLING LEFT OR RIGHT REAR DOOR TRIM PANEL .
Remove rear acoustic insulation . See 51 48 070 REMOVING AND INSTALLING/REPLACING SOUND INSULATION ON LEFT OR RIGHT REAR DOOR .

Unlock plug connection (1) on door lock and disconnect.

Unlock plug connection (2) on power window and disconnect.

Disconnect plug connection (3) on outside door handle light.

Unclip door wiring harness at points (4).

Installation:

Make sure door wiring harness is correctly laid.

Fig 1: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1), fold door wiring harness plug on B-pillar (2) downwards slightly and remove.

Unlock plug connection behind and disconnect.

Pull rubber grommet (3) out of rear door.

Feed out door wiring harness towards front to B-pillar and remove.

Fig 2: Pulling Rubber Grommet Out Of Front Door

Courtesy of BMW OF NORTH AMERICA, INC.