Adaptive Cruise Control, Adjusting, Static Adjustment (Overview Calibration Equipment)

There are two options that can be selected for the static calibration/adjustment:

The "complete alignment"

This procedure should be selected for the following activities if a wheel alignment and calibration/adjustment should be performed.

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

The "quick access"

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

• The test plan in the Vehicle Diagnostic Tester requires a readjustment.
• A software update has been performed.
• The Distance Regulation Control Module -J428- was removed and installed or replaced.
• The lock carrier is loosened, adjusted or replaced.
• The impact member is loosened, adjusted or replaced.
• There is damage at the front impact member or lock carrier.

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.
• If only the wheel sensor should be calibrated/adjusted, then the "quick access" mode must be selected on the wheel alignment computer.
• The procedure in the "quick access" mode is described in the following.

Special tools and workshop equipment required 

• Vehicle Diagnostic Tester
• Wheel Alignment Computer
• Setting Device - Basic Set: VAS 6430/1  or Setting Device - Basic Set: VAS 6430/1A 
  Fig 1: Identifying Setting Device VAS 6430

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• ACC Reflector Mirror : VAS 6430/10 

The procedure is described on a John Bean V3D Aligner: VAS6331  .

The procedure may vary if using other wheel alignment computers. In this case, follow the instructions on the wheel alignment computer screen.

• Note the test requirements. Refer to AXLE ALIGNMENT TEST REQUIREMENTS .
• Follow the measurement preparations for calibrating/adjusting the driver assistance systems. Refer to MEASUREMENT PREPARATIONS .

-- Check sensors and retainers for damage, external influence and secure fit. Service any damaged components.

-- Check the front bumper cover for damage, cracks and secure fit. Service any damaged components.

-- Check the DTC memory for adaptive cruise control (ACC). Fix all displayed entries.

-- Drive the vehicle "straight" onto the alignment rack.

-- Move the wheels so that they are straight.

-- Install quick-action clamps on the wheels.

-- Mount the reflectors on the quick-action clamps.

-- Perform the wheel run-out compensation.

-- If necessary, remove the contamination of the sensor lens with a wet towel.

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

• The Setting Device Basic Set: VAS 6430/1  must not be moved on the calibration beam.

-- Install the ACC Reflector Mirror: VAS 6430/10  -item 1- centered on the calibration beam.

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-- Position the Setting Device: VAS 6430  with the ACC Reflector Mirror: VAS 6430/10  centrally and parallel at the distance -a- to the sensor lens in the radiator grille.

• Dimension -a- = 120 ± 2.5 cm (47.24 ± 0.98 in.)

-- Place the Camera: VAS 6331/1  -item 1- for the ACC adjustment on the Setting Device - Basic Set: VAS 6430  on the right side and tighten.

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-- Level the bubble level -A- on the ACC Reflector Mirror: VAS 6430  -item 5- using the adjusting screw -1-.

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-- Level the bubble level -B- using the adjusting screws -2 and 3-.

-- Use the crank -arrow- to adjust the reflector height -5- so that the laser beam is centered vertically on the sensor lens.

-- If necessary, reposition the reflector mirror at the side on the calibration beam until the laser beam is in the horizontal center of the sensor lens.

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

-- Using the laser beam on the ACC Reflector Mirror: VAS 6430/10  check if the laser beam of the sensor lens is centered. If necessary align the reflector mirror again.

-- 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:

• Diagnostic-capable systems
• 0013 - Control Module for Adaptive Cruise Control-J428
• 0013 - Control Module for Adaptive Cruise Control, functions
• 0013 - Calibration

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

-- Switch off the ignition after successful calibration/adjustment.

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

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