Necessary preliminary tasks

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Remove ACC SENSOR

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: Griping Sensor Housing By Screw In Vice

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Measurement A [mm]: 42.5 to 43.5

Fig 3: Identifying ACC Sensor With Adjusting Screws
Courtesy of BMW OF NORTH AMERICA, INC.