66 32 020 Removing and installing/replacing sensor for lane change warning on left or right

Necessary preliminary tasks:

Remove rear bumper panel. See 51 12 156 REMOVING AND INSTALLING (REPLACING) REAR BUMPER PANEL .

Fig 1: Identifying Sensor, Screw And Plug Connection
Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Release screw (3).

Remove sensor (2).

Installation note:

Ensure that the guides are correctly seated at the marked locations.

Replacement:

Modify frame (2) for new sensor (1).

Fig 2: Identifying Frame And Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: If, in the event of side damage to the vehicle, it is not necessary to replace the tail panel, observe the following points:
Fit middle bumper panel guide on undamaged side
Use middle bumper panel guide as a gauge in order to check or correct the position of the remaining connecting points.
Middle bumper panel guide must be a to be fitted without tension.

Replacement:

Carry out VEHICLE PROGRAMMING AND ENCODING .

Replacement after body repair:

Execute diagnosis job
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- Start-up
  - Lane change warning sensor system