Adaptive Cruise Control, Calibrating, AUDI Q7

Special tools and workshop equipment required 

• Vehicle Diagnostic Tester
• Wheel Alignment Computer
• Screwdriver with T-bar VAS272001: VAS272001 
• Setting Device - Basic Set: VAS6430/1  or Setting Device - Basic Set: VAS6430/1A 
• ACC Reflector Mirror - Audi: VAS6430/3 
• Wheel Alignment Computer: VAS701001 

A new adjustment is necessary if:

• The rear axle toe was adjusted.
• The Distance Regulation Control Module -J428- and/or Distance Regulation Control Module 2 -J850- was removed and installed.
• The front bumper was removed and installed.
• The front bumper was loosened or moved.
• The front bumper is damaged.
• If the vertical adjustment angle is greater than -1.0° to +1.0.

There Are Two Options for Adjusting the Adaptive Cruise Control Sensors:

The "Quick Access"

This procedure should be selected for the following activities if only the adjustment will be performed.

• The Distance Regulation Control Module -J428- and/or Distance Regulation Control Module 2 -J850- was removed and installed.
• The front bumper was removed and installed.
• The front bumper was loosened or moved.
• The front bumper is damaged.
• If the vertical adjustment angle is greater than -1.0° to +1.0.

The "Complete Alignment"

This procedure should be selected for the following activities if an adjustment and an axle alignment will be performed.

• The rear axle toe was adjusted.
• the vehicle suspension was changed, for example, changing from standard to Sport suspension.

TIP:

• Both procedures are programmed in the wheel alignment computer. The respective procedure is performed automatically. It is only necessary to select the appropriate program for the procedure that will be performed.
• Before adjusting the ACC, see if the vehicle has an night vision system. If so, the camera for the night vision system must be calibrated first depending on the repair. Then both adaptive cruise control sensors can be adjusted. The previously set distance between the camera for the night vision system and the : VAS6430/6  can be used for adjusting the ACC.

The calibration instructions that follow describe the procedure used with the : VAS701001  .

-- "Activate wheel change mode" on equipment versions with air suspension. Refer to Owner's Manual or "Standard Vehicle Height, Initiating and Locking". Refer to STANDARD VEHICLE HEIGHT, INITIATING AND LOCKING .

If there was a previous axle alignment, the steps under "Calibration procedure without a previous axle alignment" should not performed.

Calibration procedure without previous axle alignment

-- Drive the vehicle onto the vehicle alignment platform.

• Switch off the ignition when the vehicle has come to a stop. This is the only way to ensure that the rear axle steering is in the straight-ahead position.

-- Connect the battery charger for the battery support mode. Refer to BATTERY, CHARGING .

-- Install quick-action clamps on the wheels.

-- Install the measuring sensors on the wheels.

-- Carry out wheel run-out compensation.

Adjustment Procedure with Previous Axle Alignment

• Switch off the ignition when the vehicle has come to a stop. This is the only way to ensure that the rear axle steering is in the straight-ahead position.

-- Switch off the ignition.

-- Connect the battery charger for the battery support mode. Refer to BATTERY, CHARGING .

-- Position the front wheels so they are straight.

-- Turn off all vehicle exterior lamps.

-- Close all vehicle doors.

Continuation for the Alignment Procedure with / Without Previous Axle Alignment

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

Follow the sequence for adjusting:

1. The Distance Between the Center of the : VAS6430/3  and the Audi Rings Must Be 120 cm ± 2.5 cm.

   TIP:

   Perform this step if night vision camera was not adjusted earlier.

   If a camera adjustment/calibration was performed earlier, then it is not necessary to reposition the : VAS6430/1A  .

2. Position the : VAS6430/3  on the Right Side in Front of the -J428-,
3. Adjust the Distance Regulation Control Module -J428-,
4. Attach the : VAS6430/3  on the Opposite Side of the Calibration Beam in Front of Distance Regulation Control Module 2 -J850-,
5. Check the Position of the Bubble Level and of the Calibration Beam (Using the Display on the Wheel Alignment Computer) and Correct It If Necessary
6. Adjust the Distance Regulation Control Module 2 -J850-.

• Before adjusting the ACC, check both "sensors" and their mounts and attachments for damage, external influences and secure fit. Repair any damaged components if necessary. Likewise, check the front bumper cover for damage, cracks and secure fit and service any damaged parts, if necessary.

-- Install the left and right air intake grilles. Refer to OVERVIEW - BUMPER COVER .

-- Remove any dirt that may be on the sensor lens.

-- Connect the Vehicle Diagnostic Tester to the vehicle. (Guide the diagnostic cable through the door window.)

Process Without a Previously Calibrating/Adjusting the Night Vision Camera

-- Position the : VAS6430/1A  at distance -A- from the center of the : VAS6430/3  up to the Audi rings.

• Distance -A- = 120 cm ± 2.5 cm, measured between the : VAS6430/3  and the surface of the Audi rings.
• The : VAS6430/1  must not be moved on the calibration beam.

-- Mount the front wheel measuring sensors -1- onto the : VAS6430/1A  .

Procedure for all

-- Install the : VAS6430/3  on the right side next to the vertical slits as shown.

-- In area -A-, bring item -2- on the rotary knob into alignment with the marking on the mirror (number 2 on the rotary knob must face the vehicle).

-- Align the : VAS6430/1A  by moving it from side to side -B arrows-.

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

-- Adjust the mirror -4- using the crank -arrow- on the : VAS6430/1A  so the laser beam is vertically centered on the sensor lens. If necessary adjust the mirror -4- from side to side on the calibration beam until the laser beam is horizontally centered on the sensor lens.

-- Set the same individual toe settings of the front axle via the precision adjustment bolt -5-.

• The difference between individual toe values must be less than 6' or they must be the same.

-- Level the bubble levels -2- of the sensor -1-.

-- Using the laser beam -3- on the : VAS6430  , check if the laser beam is in the center of the sensor lens.

• If the laser beam still meets the sensor lens at this step after adjusting the same individual toe values, the : VAS6430/1A  is aligned correctly (positioned).
• If the laser beam does not meet the sensor lens, the : VAS6430/1A  must be realigned.

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Body
• Electrical system
• 01 - OBD-capable systems
• 13 - Distance Regulation Control Module J428
• 13/8B - Distance Regulation Control Module, functions
• 13/8B - Adjustment

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

-- The fine adjustment of the Distance Regulation Control Module -J428- is controlled using the upper bolts -1- and -2- the : VAS272001  .

Courtesy of AUDI OF AMERICA, LLC

-- When the Distance Regulation Control Module -J428- is successfully adjusted, perform the procedure on the Distance Regulation Control Module 2 -J850-.

The procedure for adjusting the Distance Regulation Control Module 2 -J850- is identical to adjusting Distance Regulation Control Module -J428-. To do this, move the : VAS6430/3  -1- to the opposite side of the calibration beam. Refer to ADAPTIVE CRUISE CONTROL (ACC), ADJUSTING .

-- Select the following tree structure for the adjustment:

• Body
• Electrical system
• 01 - OBD-capable systems
• 8B - Distance Regulation Control Module 2 J850
• 8B - Distance Regulation Control Module, functions
• 8B/13 - Adjustment

-- The fine adjustment of the Distance Regulation Control Module 2 -J850- takes place via the bolts -1- and -2- with the : VAS272001  .

Courtesy of AUDI OF AMERICA, LLC

• The ACC adjustment is confirmed when "output diagnostic test complete" appears in the Vehicle Diagnostic Tester.

-- Switch off the ignition.

-- Disconnect the Vehicle Diagnostic Tester from the diagnostic connector.

-- Disconnect the battery charger. Refer to BATTERY, CHARGING .

-- Install the air grille. Refer to OVERVIEW - BUMPER COVER .