66 31... Replacing screws on ACC sensor unit

Necessary preliminary tasks:

IMPORTANT: Visually inspect sensor housing for damage/leaks.

Replace ACC sensor if sensor housing is damaged.

Grip sensor housing (1) by screw in a vice (2).

Release screw by turning sensor housing (2).

IMPORTANT: After releasing screws, check sensor housing (1) again for damage.
Replace ACC sensor if sensor housing (1) is damaged.

Fig 1: Identifying Screws On ACC Sensor Unit

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, graphic show ACC sensor holder removed.

Replace plastic nuts (1).

Fig 2: Identifying Plastic Nuts

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Carry out rough adjustment of ACC sensor (1) at adjusting screws (2).

Measurement A: 42.5-43.5 mm

Fig 3: ACC Sensor Adjustment Dimensions
Courtesy of BMW OF NORTH AMERICA, INC.

After installation: