Adaptive Cruise Control (Acc), Calibrating, Static

Special tools and workshop equipment required 

• ACC Reflector Mirror :VAS 6430/10 
• Setting Device - Basic Set:VAS 6430/1A 

The Control Module for Adaptive Cruise Control -J428- will be called the sensor in the information that follows.

Preparing

Conditions

• Refer to Necessity of Calibration  .
• If the ACC Reflector Mirror:VAS 6430/10  is repositioned on the calibration beam during the calibration, then the adjustment of the Setting Device Basic Set:VAS 6430  must be checked again (for example using bubble levels, individual toe values at the calibration beam, etc.).
• There may be no DTC memory entry present because they prevent the calibration.

-- Check sensor, brackets, and retainers for damage, external influences, and secure fit.

Calibration procedure without previous axle alignment

-- Select the program in the wheel alignment computer.

-- Pay attention to the test requirements for the axle alignment. Refer to TEST REQUIREMENTS .

-- Check if there is enough floor space between the vehicle and the setting device.

Conditions

• The distance between the setting device and the sensor must be 120 cm ± 2.5 cm.
• If the available floor space is not sufficient, drive the vehicle onto the wheel alignment platform backward and then use the corresponding floor space.

-- Drive the vehicle straight onto the wheel alignment platform.

-- Bring wheels in the straight position.

-- Install the quick-action clamps on the rear wheels.

-- Install the sensor to the quick-action clamp.

-- Attach the reflector mirror at the center and parallel to the setting device.

Continuation for all vehicles

-- Attach the reflector mirror -1- at the center and parallel to the setting device.

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-- Position the setting device with the reflector mirror -1- in parallel alignment at a distance of -a- to the sensor.

Conditions

• Dimension -a- = 120 cm ± 2.5 cm

-- Position the front wheel measuring sensors -1- on the calibration beam.

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-- Turn the adjusting screws -1-, -2-, and -3- until the bubble levels -A- and -B- on the reflector mirror -5- are level.

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Vehicles with sensor behind the brand emblem:

-- Adjust the reflector mirror on the side of the calibration beam so that the laser beam strikes the brand emblem in the center.

-- Refer to Component Location Overview - Sensors and Control Modules in Front Section of Vehicle  .

Vehicles with sensor behind the bumper cover:

-- Adjust the reflector mirror sideways on the calibration beam, so that the laser beam hits the trim under the brand emblem in the center.

-- Refer to Component Location Overview - Sensors and Control Modules in Front Section of Vehicle  .

Continuation for all vehicles

-- Level out the sensor bubble levels.

-- Turn the adjusting screw -4- until the display on the wheel alignment computer is within the tolerance range.

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-- Turn the adjusting screws -1-, -2-, and -3- until the bubble levels -A- and -B- on the reflector mirror -5- are level.

-- Check if the bubble levels -A- and -B- are level and the laser beam strikes the center of the trim.

Conditions

• If the laser beam does not hit the trim in the center, readjust the reflector mirror -5-.

Calibrating

Conditions

• Vehicle Diagnostic Tester connected.

-- Complete the "adaptive cruise control (ACC) calibration" using the Vehicle Diagnostic Tester. Refer to the appropriate Service Information .