66 31 006 Removing and installing (replacing) ACC sensor (Sedan)

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:

Remove front bumper trim . See 51 11 156 REMOVING AND INSTALLING FRONT BUMPER TRIM .

Disconnect plug connection (1).

Unclip ACC sensor (2) from ACC holder (3) towards front.

Installation:

Make sure ACC sensor (2) is correctly engaged in ACC holder (3).

Fig 1: Identifying Plug Connection And ACC Sensor From ACC Holder

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Always replace plastic nuts (1).

Turn plastic nuts (1) with a suitable tool through approx. 90° and pull towards rear out of holder (2).

Fig 2: Turning Plastic Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Check preliminary adjustment of ACC sensor (1).

If necessary, carry out preliminary adjustment at retaining pins (2).

Basic dimension A: 43 ± 0.5 mm
Final dimension A: is adapted by means of ACC sensor adjustment

Fig 3: Identifying Preliminary Adjustment Of ACC Sensor And Dimension
Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: After fitting front bumper trim, check concentric position of ACC sensor eye (1) in relation to trim (3).

If necessary, carry out position adjustment by means of screws (2).

Tightening torque 6 Nm .

Make sure plain ACC sensor (1) can move freely.

Fig 4: Identifying Concentric Position Of ACC Sensor Eye In Relation To Trim

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out programming/coding .

Carry out ACC sensor adjustment using BMW diagnostic system.