Adaptive Cruise Control (Acc), Adjusting

Special Tools And Workshop Equipment Required 

• ACC Adjuster :VAS6190/2 
• Setting Device Basic Set :VAS6430/1 
• ACC Reflector Mirror - Audi :VAS6430/3 
• Vehicle Diagnostic Tester
• Wheel Alignment Computer

There Are Two Possibilities 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.
• The adjustment angle is greater than -0.8° to +0.8°.
• The Distance Regulation Sensors are over-adjusted vertically.

The "Complete Alignment" 

This Procedure Should Be Selected For The Following Activities If An Adjustment And A Suspension Adjustment Will Be Performed.

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

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

CALIBRATION PROCEDURE WITHOUT A PREVIOUS AXLE ALIGNMENT 

-- Install quick clamps on the rear wheels.

-- Install measuring sensors on the rear wheels.

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

-- Connect the Vehicle Diagnostic Tester to the vehicle and guide the diagnostic cable through the open window.

CALIBRATION PROCEDURE WITH A PREVIOUS AXLE ALIGNMENT 

-- Position the front wheels so they are straight.

Continuation for the Alignment Procedure with or without a Previous Axle Alignment

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

-- Close All Vehicle Door.

-- Select the ACC calibration button on the 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.
   NOTE:

   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 :VAS6430/1  .

2. Position the :VAS6430/3  on the Right Side in front of the -J428-,
3. Adjust the -J428-,
4. Attach the ACC Reflector Mirror, Audi 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-.

-- Remove The Right And Left Air Intake Grille -1-. Refer to AIR INTAKE GRILLE, REMOVING AND INSTALLING .

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

Process without a Previously Calibrating/Adjusting the Night Vision Camera

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

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

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Procedure for All

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-- Install the ACC Reflector Mirror AUDI on the right side next to the vertical slits as illustrated.

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

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

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

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

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-- Adjust the same front axle individual toe settings using fine adjustment screw -5-.

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

-- Bring bubbles -2- on measurement sensor -1- into balance.

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-- Now using the laser beam -3- on the :VAS6430/1  , check if the laser beam contacts the sensor lens.

-- Switch on the Vehicle Diagnostic Tester.

The Vehicle Diagnostic Tester is ready for operation when the operating modes are displayed.

-- Turn on the ignition.

-- Touch Guided Fault Finding  .

-- Select in succession:

• Brand
• Type
• Model year
• Version
• Engine Code

-- Confirm Data Entered.

Wait until the Vehicle Diagnostic Tester has checked all the vehicle control module.

-- Press the go to  button and select "function/component selection".

-- Select the corresponding program in "Guided Functions".

Now follow instructions on screen to perform adjustment.

-- Use the lower screw -1- and the upper screw -2- to fine adjust the Distance Regulation Control Module -J428- in "Guided Functions".

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After the Distance Regulation Control Module -J428- has been adjusted successfully, then adjust the Distance Regulation Control Module 2 -J850-.

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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 ACC Reflector Mirror Audi -1- to the opposite of the of the calibration beam. Refer to ADAPTIVE CRUISE CONTROL (ACC), ADJUSTING .

-- Use the lower screw -1- and the upper screw -2- to fine adjust the Distance Regulation Control Module 2 -J850- in "Guided Functions".

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-- Switch off the ignition.

-- Disconnect the Diagnostic Cable connector from Data Link Connector (DLC).

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

-- Install the air intake grille. Refer to AIR INTAKE GRILLE, REMOVING AND INSTALLING .