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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 2121 (Distance Systems, Cruise Control - Repair) >> Adaptive Active Cruise Control (Acc) >> 66 31 001 Adjust ACC sensor

66 31 001 Adjust ACC sensor

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Special tools required: 

36 1 100

Special tool required:

Active Cruise Control ACC adjusting device, complete.

Consisting of:

  1. Mirror, complete
  2. Wheel laser
  3. Slotted diaphragm
  4. Control holder (for initial installation of rail)
  5. Rail
  6. Setup and Operating Instructions (not shown)

Fig 1: Cruise Control ACC Adjusting Device
G00530374Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: A mounting which is not included in the delivery specification 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 notes for ACC adjusting device .
NOTE: To set the ACC sensor, connect the BMW diagnosis system and fit the ACC adjusting device. Select ACC calibration in diagnosis.
  • Service function
  • Chassis and suspension
  • ACC cruise control
  • Start-up of ACC sensor

Handle ACC adjusting device in accordance with mounting and Owner's Handbook provided with device.

NOTE: Further information on the ACC adjusting device can be found in the BMW Workshop Equipment and Planning Documentation.

If a correction angle is specified via the diagnosis, the following operations can be performed to obtain a maximum angle correction of ± 1°.

Loosen, but to not remove, screws (1 and 2) at the marked locations. Installation note:  Tighten screws (2) followed by screws (1). Tightening torque 66 31 2AZ .

Fig 2: Loosen Screws At Marked Locations
G00530375Courtesy of BMW OF NORTH AMERICA, INC.

Output of a negative correction angle:  Turn holder ACC (1) clockwise (arrow 2) all the way. Output of a positive correction angle:  Turn holder ACC (1) anticlockwise (arrow 3) all the way.

Fig 3: Turning Holder ACC
G00530376Courtesy of BMW OF NORTH AMERICA, INC.

The following step must be taken if there is an "Incorrectly adjusted sensor" fault entry or there is a suspicion of frontal damage. 

IMPORTANT: The vehicle must be parked on a flat, horizontal surface!
NOTE: For purposes of clarity, graphic shows holder (1) removed.

Hold square (2) against holder (1) as shown. Limit stop leg length: approx. 105 mm Check vertical orientation in direction of travel with bubble level (3). Replace holder if necessary. 

Fig 4: Checking Vertical Orientation In Direction Of Travel
G00530377Courtesy of BMW OF NORTH AMERICA, INC.