66 31 006 Removing and installing (replacing) ACC sensor

WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, 2009 BMW 550i, 2008 BMW M5, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove FRONT BUMPER TRIM .

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

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

Fig 1: Identifying Impact Absorber (3) And Carrier (4)

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Installation:

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

Fig 2: Identifying Mountings (1) And Impact Absorber (2)

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Unfasten plug connection (1) and disconnect.

Unscrew nuts (2).

Installation:

Replace self-locking nuts.

Release screw (3).

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

Fig 3: Identifying ACC Sensor (4) And Retaining Plate (5)

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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).

Fig 4: Identifying Screws, ACC Sensor And Retaining Plate

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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 Catches, Adjustment Aid And Retaining Plate

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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: Identifying Measurement "A" At ACC Sensor
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Replacement:

Carry out ACC sensor adjustment using BMW diagnostic system.

Replacement:

Carry out PROGRAMMING/CODING .