Adjustment Procedure Using ACC Setting Device (VAS 6430)

Adjustment Procedure using ACC Setting Device (VAS 6430)

Special tools, testers and auxiliary items required

• Vehicle Diagnostic, Testing and Information System (VAS 5051 B) with corresponding diagnostic cable.

• ACC Adjustment Device (VAS 6430)

• Wheel Alignment Computer

• Adjuster for ACC (VAS 6190/2)

• Before driving the vehicle onto the alignment stand, check whether there is a sufficiently large space between the vehicle and the (VAS 6430). The distance between the (VAS 6430) and the vehicle must be 120 cm +/- 5 cm.

• If there is not sufficient space, drive vehicle backward on alignment stand in order to be able to use the corresponding space.

• Before performing the calibration procedure, check the position of the calibration mirror. The calibration mirror may need to be adapted before performing the calibration.

• The (VAS 6430) must be adapted before adjustment procedure. If this is done during the adjustment procedure, the pre-calibration on the (VAS 6430) must be repeated.

• Before beginning the adjustment, check the Diagnostic Trouble Code (DTC) memory and correct any malfunctions present.

The adjustment procedure is described here with the (VAS 6430).

• 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

- Connect the battery charger.

- Select the ACC calibration button on the alignment computer.

- Install quick clamps on the rear wheels.

- Install measuring sensors on the rear wheels.

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

• The (VAS 6430) must not be moved on the calibration beam.

Calibration procedure with or without a previous axle alignment.

- Remove the right front air intake grille.

- Remove all dirt on the sensor lens.

- If necessary, remove the mirror installed at the center and install it all the way at the right near the vertical slits.






- Position (VAS 6430) at a distance - A - of 120 cm +/- 5 cm from sensor lens to mirror surface.






- Install the front wheel measuring sensors - 1 - on the (VAS 6430).






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






- Now align by sliding it sideways - arrows B - (VAS 6430) so that the laser beam is horizontally centered on the senor lens.






- Level the bubble levels - A and B - on the (VAS 6430) using the adjusting screws - 1, 2 and 3 -.






- Adjust the mirror - 4 - using the crank - arrow - on the (VAS 6430) so the laser beam is vertically centered on the sensor lens.






- 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.






- Now using the laser beam - 3 - on the (VAS 6430) , check if the laser beam contacts sensor lens.

• If the laser beam still meets the sensor lens at this step after adjusting the same individual toe values, the (VAS 6430) is aligned correctly (positioned).

• If the laser beam does not meet the sensor lens, (VAS 6430) alignment must be performed again.

- Connect the (VAS 5051 B).

- Connect (VAS 5051/5A) to Data Link Connector (DLC).






- Turn (VAS 5051 B) on.

(VAS 5051 B) is ready to operate when it displays operating modes in button fields.

- Turn on ignition.

- Touch Guided Fault Finding.

- Select in succession:

• Brand

• Type

• Model year

• Version

• Engine Code

- Confirm data entered.

Wait until the (VAS 5051 B) has checked all available control modules in vehicle.

- 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.

- Turn the (VAS 6190/2) in direction of - arrow A or B - and use the upper screw - 2 - and the lower screw - 1 - for precision adjustment in "Guided Fault Finding".






The ACC adjustment is only accepted if "actuator diagnosis ended" is displayed in (VAS 5051/B).

- Turn ignition off.

- Disconnect (VAS 5051/5A) connector from DLC.

- Disconnect the battery charger.

- Install the air intake grille.