66 31 006 Removing and installing (replacing) ACC sensor

Necessary Preliminary Tasks: 

• Remove front bumper trim. Refer to 51 11 156 REMOVING AND INSTALLING FRONT BUMPER TRIM .

Lift out wiring harness (1) at points (2).

Disconnect impact absorber (3) at carrier (4) and remove.

Fig 1: Locating Wiring Harness In Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Mountings (1) of impact absorber (2) must not be damaged.

Fig 2: Identifying Impact Absorber Mountings

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Unscrew nuts (2).

Fig 3: Removing ACC Sensor With Retaining Plate

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Replace self-locking nuts.

Release screw (3).

Feed out ACC sensor (4) with retaining plate (5) in direction of arrow and remove.

Fig 4: View Of ACC Sensor In Retaining Plate

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Unclip electric cable (2) at cable guides (3).

Release screws (4) and remove ACC sensor (5) from retaining plate (6).

Installation: 

Adjustment aid (1) must not be damaged.

If necessary, detach adjustment aid (1) from retaining plate (2). To do so, unlock catches (3) and detach adjustment aid (1) in direction of arrow from retaining plate (2).

Fig 5: Identifying Adjustment Aid In Retaining Plate

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Carry out rough adjustment of ACC sensor (1). If necessary, perform rough adjustment at adjusting screws (2).

• Measurement A [mm]: 22.5 to 25.0.
  Fig 6: View Of Measurement A For ACC Sensor

  Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Carry out ACC sensor adjustment using BMW diagnostic system. Refer to 66 31 001 ADJUSTING ACC SENSOR  .

Replacement: 

Carry out programming/coding. Refer to DIAGNOSIS PROGRAMMING/CODING .