Adaptive Cruise Control (Acc), Calibrating

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Setting Device - Basic Set:VAS6430/1 or Setting Device - Basic Set:VAS6430/1A

Fig 1: Identifying Setting Device VAS 6430
Courtesy of AUDI OF AMERICA, LLC
ACC Reflector Mirror :VAS6430/10
Wheel Alignment Computer

Before adjusting the adaptive cruise control (ACC), check the sensor and its mounts and attachments for damage, external influences and secure fit. Repair any damaged components.

Prior to adjusting the adaptive cruise control (ACC), check the event memory and correct any malfunctions.

The ACC control module "adjustment angle measured value" shows whether the sensor is misaligned.

The ACC adjustment may only be set using a VW/Audi-approved wheel alignment device and adjustment equipment!

Proper ACC operation requires correct alignment.

-- The Control Module for Adaptive Cruise Control -J428- must be calibrated under the following conditions:

Control Module for Adaptive Cruise Control -J428- was replaced
The lock carrier service position was performed
The lock carrier was removed and installed.
The lock carrier was replaced
The rear axle toe was adjusted.
Changes were made to the suspension that affect the height.

NOTE:

Before driving the vehicle onto the alignment stand, make sure there is enough space between the vehicle and the :VAS6430/1A . The distance between the :VAS6430/1A and the sensor must be 120 cm ± 2.5 cm.

If there is not sufficient space, drive the vehicle backward onto the alignment stand in order to use the corresponding space.

If the :VAS6430/10 is repositioned on the calibration beam during the adjustment, the :VAS6430/1A setting must always be checked (for example, bubble levels, individual toe settings at the calibration beam, etc.).

Before beginning the adjustment, check the DTC memory and correct any malfunctions present.

The adjustment procedure is described here using the :VAS6430/1 .

Follow the Sequence for Adjusting:

Establish a Distance of 120 cm ± 2.5 cm Between the Centrally Positioned ACC Reflector Mirror:VAS6430/10 and the Sensor in the Air Grille,
Attach the ACC Reflector Mirror:VAS6430/10 in the Center of the Calibration Beam,
Adjust the Control Module for Adaptive Cruise Control -J428-

Do not perform the steps under "Calibration procedure without a previous axle alignment" if an axle alignment has already been performed.

Calibration Procedure without Previous Axle Alignment

-- Select the ACC calibration button on the wheel alignment computer.

-- Follow the test requirements for an axle alignment. Refer to TEST REQUIREMENTS .

-- Drive the vehicle onto the vehicle alignment platform.

-- Connect the battery charger. Refer to Battery, Charging .

-- Connect the Vehicle Diagnostic Tester. (Guide the diagnostic cable through the open window.)

NOTE:

During the adjustment procedure, make sure all the vehicle doors remain closed and the vehicle exterior lamps are switched off.

-- Position the front wheels so they are straight.

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

-- Install the measurement sensor on the rear wheels.

-- Perform a wheel run-out compensation on the rear wheels.

Calibration Procedure with or Without Previous Axle Alignment

-- Position the :VAS6430/1A at a distance -a- from the centrally positioned :VAS6430/10 to the VW emblem in the radiator grille.

Fig 2: Identifying Special Tool Required And Placement

Courtesy of AUDI OF AMERICA, LLC

a - 120 cm ± 2.5 cm

-- If necessary remove debris from the VW emblem.

NOTE:

The :VAS6430/1 must not be moved on the calibration beam.

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

Fig 3: Front Wheel Measuring Sensors

Courtesy of AUDI OF AMERICA, LLC

-- Level the bubble levels -A and B- on the :VAS6430/10 using the adjusting screws -1, 2 and 3-.

Fig 4: Leveling Bubble Levels On VAS 6430 Using Adjusting Screws

Courtesy of AUDI OF AMERICA, LLC

-- Adjust the mirror -4- via the crank -arrow- so that the laser beam is in the center of the sensor lens.

-- Position the mirror on the side of the calibration beam so that the laser beam is in the center of the VW emblem -1-.

Courtesy of AUDI OF AMERICA, LLC

-- Level the bubble levels of the measurement sensor.

-- Turn the precision adjustment screw -5- until the display on the wheel alignment computer is located within the tolerance range.

Fig 5: Leveling Bubble Levels On VAS 6430 Using Adjusting Screws

Courtesy of AUDI OF AMERICA, LLC

-- Level the bubble levels of the measurement sensor.

-- Using the laser beam on the :VAS6430/10 , check whether the bubble level is level and the laser beam is in the center of the sensor lens.

NOTE:

If the laser beam does not meet the sensor lens, the :VAS6430/10 must be realigned.

Follow the instructions on the screen to perform the adjustment.