Lane Change Assistance, Calibrating

Special tools and workshop equipment required 

• Vehicle Diagnostic Tester
• Calibration Unit:VAS6350A 

• When a software update should be made, this must be performed before the calibration.

Conditions

-- The Lane Change Assistance Control Module -J769- / Lane Change Assistance Control Module 2 -J770- must be calibrated during the following conditions:

• Lane Change Assistance Control Module -J769- or Lane Change Assistance Control Module 2 -J770- was replaced.
• The rear bumper cover was damaged by a parking block, for example.
• The rear bumper cover was removed and installed.
• The threaded connections on the bumper mount are loosened.
• "No or incorrect basic setting/adaptation" is stored in the DTC memory.

Preparing for Calibration

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1. Calibration Tool - Spacing Laser :VAS6350/2 
   • For distance measurement
   • Usage information. Refer to the Calibration Unit:VAS6350  Owner's Literature.
2. Calibration Unit:VAS6350A 
3. Level
   • On the Calibration Unit:VAS6350A 
   • To check the horizontal position of the Calibration Unit:VAS6350A 
4. Catch Bracket
   • To mount the Calibration Tool - Spacing Laser :VAS6350/2  for the distance measurement
   • Distance to the Calibration Tool - Wheel Center Mountings :VAS6350/1  on the rear wheels: dimension -a- = 1700 ± 2 mm
5. Calibration Tool - Wheel Center Mountings -VAS6350/1-
   • With wheel bolt adapter and measuring paddle
6. Brand Emblem
   • The laser point is aligned to the center of the brand emblem
7. Calibration Tool - Lane Change Calibration Tool :VAS6350/4 
   • Is moved from one side of the measuring field to the other during calibration
   • When installed correctly, the vehicle electrical system voltage line must be connected at lower left of the calibration device (as seen in direction of travel)
8. Measuring Scale
   • For positioning the Calibration Tool - Lane Change Calibration Tool :VAS6350/4 
9. Calibration Tool - Linear Laser:VAS6350/3 
   • With "laser protective eyewear"
   • On the Calibration Unit:VAS6350A 
   • Switching on and off. Refer to Calibration Tool:VAS6350  Owner's Literature.
10. Plastic Foot
    • Quantity: 3
    • Can be adjusted when setting the horizontal position of the Calibration Unit:VAS6350A 

Preliminary Work

-- Move the vehicle onto a solid, flat surface.

-- Apply the parking brake - the vehicle must not move during the measurement.

-- Place the front wheels in a straight-ahead position - steering wheel in neutral position.

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Remove the label with the metal foil from the bumper cover, if necessary.

-- Secure three suitable wheel bolt adapters for the wheel bolts on each :VAS6350/1  .

-- Insert the measuring paddle at both :VAS6350/1  and secure with the locking nut.

-- Place the :VAS6350/1  onto the wheel bolts on both rear wheels.

• The wheel center mounting rotation center must be in the wheel rotation center.

-- Adjust the measuring paddle using the locking nuts so that they move freely just above the floor.

• The measuring paddles must move easily.
• The measuring paddles must be vertical.

-- Position the :VAS6350A  at distance -a- to the rear wheels.

• Dimension -a- = 1, 700 mm

-- Switch on the :VAS6350/2  with the ON  button.

Display on the :VAS6350/2  :

• "- - - m"

-- For distance measurement, hold the :VAS6350/2  - 2- flush to the right catch bracket as shown.

• The :VAS6350/2  must lie firmly against the catch bracket.

-- Make sure the "laser beam" for the distance measurement contacts the lower enlarged part of the measuring paddle -1-.

If that is not the case, correct the measuring paddle height using the locking nuts on the :VAS6350/1  .

-- Briefly press the ON  button for distance measurement.

Display on the :VAS6350/2  :

• "1, 700 m" (specified value: 1700 ± 2 mm).

-- Repeat the measuring procedure from the left catch bracket to the left rear wheel.

• The distance value must be the same on both sides.

If both measured values are not the same, adjust the :VAS6350A  accordingly.

Calibrating Procedure 

The Vehicle Diagnostic Tester is connected.

-- Select the Diagnostic  mode and start the diagnosis.

-- 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
• 3C - Lane Change Assistance Control Module - J769
• 3C - Lane change assistance control module, functions
• 3C - Calibration

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

-- Secure the :VAS6350/4  at the right rear on the mount for the :VAS6350A  .

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• When installed correctly, the vehicle electrical system voltage wire must be connected at the bottom left of the calibration device (as seen in direction of travel).

Dimension -a- is measured from the upper edge of the calibration device to the floor.

Model	TT Coupe	TT Roadster
Adjustment dimension height in mm dimension -a-	769	769

-- The indicator on the base of the :VAS6350/4  must align with adjustment dimension on the measuring scale -1- on measuring field -arrow-.

Model	TT Coupe	TT Roadster
Right adjustment dimension read in mm on the measuring scale -1-	827	887

-- Connect the :VAS6350/4  to the vehicle electrical system voltage.

-- Bring the :VAS6350A  into a horizontal position by turning the plastic feet.

• Observe the bubble level (sight glass) on the :VAS6350A  -arrow-.

-- Turn on the :VAS6350/3A  on the :VAS6350A  .

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-- Wear "laser protective eyewear".

-- Align the :VAS6350A  so that the :VAS6350/3  strikes the center of the brand emblem on the rear lid.

-- Check the distance on the left and right sides between the catch brackets of the :VAS6350A  and the measuring paddles -1- on wheel mountings again.

• Specified value: 1700 ± 2 mm

Calibration Procedure 

The following should not occur during the calibration procedure:

• There must be no metal reflectors within a 2 m radius of the calibration device (for example, tool carts, metal cabinets).
• Vehicle doors must not be opened or closed.
• People must not sit in the vehicle.
• People must not go between the vehicle and the :VAS6350/4  .

Procedure 

-- Turn on the :VAS6350/4  at the power switch -3-.

• The green LED -1- must turn on.

-- Follow the instructions in the vehicle diagnostic tester display.

During the program sequence, a request is made to switch the :VAS6350/4  from the right to the left side of the :VAS6350A  .

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-- Turn off the :VAS6350/4  and reposition the calibration tool.

• When installed correctly, the vehicle electrical system voltage wire must be connected at the bottom left of the calibration device (as seen in direction of travel).

Dimension -a- is measured from the upper edge of the calibration device to the floor.

Model	TT Coupe	TT Roadster
Adjustment dimension height in mm dimension -a-	769	769

-- The indicator on the base of the :VAS6350/4  must align with adjustment dimension on the measuring scale -1- on measuring field -arrow-.

Model	TT Coupe	TT Roadster
Left adjustment dimension read in mm on the measuring scale -1-	827	887

-- Turn on the :VAS6350/4  at the power switch -3-.

• The green LED -1- must turn on.

-- Follow the instructions in the vehicle diagnostic tester display.

-- After calibrating the lane change assistance successfully, end "calibration", switch off the ignition and disconnect the diagnostic connector.