66 31 001 Adjusting ACC sensor

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Unclip trim (1) at points (2) and remove towards front from bumper trim (3).

Installation:

Make sure trim (1) is correctly seated.

Locking hooks (2) must not be damaged.

Fig 1: Identifying Trim And Bumper Trim

Courtesy of BMW OF NORTH AMERICA, INC.

E90/E91 up to build date 09/2008:

Installation:

If necessary, cut off front retaining lug (1) from trim (2).

Distance: A = 10 mm

Fig 2: Identifying Cut Off Front Retaining Lug From Trim
Courtesy of BMW OF NORTH AMERICA, INC.

E90/E91 up to build date 09/2008:

IMPORTANT: Before adjusting ACC sensor, check ease of movement at ACC sensor.

Measure gap dimension between front bumper trim (1) and ACC sensor (2).

Minimum dimension: A = 3-5 mm
Maximum dimension: A = 6-7 mm

Fig 3: Measuring Gap Dimension Between Front Bumper Trim And ACC Sensor
Courtesy of BMW OF NORTH AMERICA, INC.

If minimum dimension not obtained:

Carry out preliminary work for ACC sensor adjustment.

Carry out adjustment of ACC sensor (1) with special tool 66 3 150 by means of adjusting screws (2).

Fig 4: Adjusting ACC Sensor Using Special Tool (66 3 150)

Courtesy of BMW OF NORTH AMERICA, INC.

Special tool required:

Active Cruise Control ACC adjusting device, complete.

Order number: 81 10 0 021 292

Consisting of:

Mirror, complete
Wheel laser
Slotted diaphragm
Control bracket (for initial installation of rail)
Rail
Setup and Owner's Handbook (not shown)

Fig 5: Identifying Mirror, Wheel Laser, Rail, Control Bracket And Slotted Diaphragm
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: A holder which is not included in the scope of delivery is required to support the wheel laser. Use either the quick-action clamp from the existing KDS or ACC wheel holder (36 1 100 ).

NOTE:

Follow instructions for ACC adjusting device included with tool.

NOTE: To adjust the ACC sensor, connect the BMW diagnosis system and fit the ACC adjusting device.
Select ACC system in diagnosis. Start test module "ACC adjustment" (service functions) and proceed in accordance with instructions.
Handle ACC adjusting device in accordance with mounting and Owner's Handbook provided with device.