Lane Change Assistance, Calibrating

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

Special tools and workshop equipment required 

• Vehicle Diagnostic Tester
• Calibration Unit:VAS 6350A 
  Fig 1: Calibration Device VAS 6350

  Courtesy of AUDI OF AMERICA, LLC

Conditions

-- The Lane Change Assistance Control Module -J769- / Lane Change Assistance Control Module 2 -J770- must be calibrated using the Vehicle Diagnostic Tester 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

Courtesy of AUDI OF AMERICA, LLC

1. Calibration Tool - Spacing Laser -VAS 6350/2-
   • For distance measurement
   • Usage information. Refer to the Calibration ToolVAS 6350 Owner's Manual.
2. Calibration Unit -VAS 6350A-
3. Level
   • On the Calibration Tool -VAS 6350A-
   • For checking the horizontal position of the Calibration Tool -VAS 6350A-
4. Catch Bracket
   • To mount the Calibration Tool - Spacing Laser -VAS 6350/2- for the distance measurement
   • Distance to the Calibration Tool - Wheel Center Mountings -VAS 6350/1- on the rear wheels: dimension -a- = 1700 ± 2 mm
5. Calibration Tool - Lane Change Calibration Tool -VAS 6350/4-
   • 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)
6. Emblem
   • The laser pointer is aligned to the center of the emblem
7. Calibration Tool - Wheel Center Mountings -VAS 6350/1-
   • With wheel bolt adapter and measuring paddle
8. Measuring Scale
   • For positioning the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4-
9. Calibration Tool - Linear Laser -VAS 6350/3A-
   • With "laser protective eyewear"
   • On the Calibration Tool -VAS 6350A-
   • Turning on and off. Refer to the Calibration ToolVAS 6350 Operating Instructions.
10. Plastic Foot
    • Quantity: 3
    • Can be adjusted when setting the horizontal position of the Calibration Tool -VAS 6350A-

Preliminary Work

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

-- Activate the "standard vehicle height" on vehicles with air suspension (MMI setting: automatic or comfort).

-- 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.

TIP:

If a malfunction message appears in the display, refer to the Vehicle Diagnostic Tester Operating Instructions.

-- 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 Calibration Tool - Wheel Center Mountings -VAS 6350/1-.

-- Insert the measuring paddle at both Calibration Tool - Wheel Center Mountings -VAS 6350/1- and secure with the locking nut.

-- Place the Calibration Tool - Wheel Center Mountings -VAS 6350/1- onto the wheel bolts on both rear wheels.

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

-- Place the Calibration Tool - Wheel Center Mountings -VAS 6350/1- on the wheels so that the "anti-theft wheel bolts" are not connected to the wheel center mounting.

-- 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 Calibration Tool:VAS 6350A  at distance -a- to the rear wheels.

• Dimension -a- = 1, 700 mm

-- Switch on the Calibration Tool - Spacing Laser:VAS 6350/2A  with the ON  button.

Display on the Calibration Tool - Spacing Laser:VAS 6350/2A  :

• "- - - m"

• The laser is switched on at same time.

-- For distance measurement, hold the Calibration Tool - Spacing Laser:VAS 6350/2  -item 2- flush to the left catch bracket as shown.

• The Calibration Tool - Spacing Laser:VAS 6350/2A  must lie firmly against the catch bracket.

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

If this is not the case, measuring paddle height must be corrected using locking nuts on Wheel Center Mounting -VAS 6350/1-.

-- Briefly press the ON  button for distance measurement.

Display on the Calibration Tool - Spacing Laser:VAS 6350/2A  :

• "1, 700 m (5, 577.4 feet) (5, 577.4 feet)" (specified value: 1700 ± 2 mm).

-- Repeat the measuring procedure from the right stop bracket to the right rear wheel.

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

If both measured values are not the same, adjust the Calibration Tool:VAS 6350A  accordingly.

Calibrating Procedure

The Vehicle Diagnostic Tester is connected.

-- 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
• CF - Lane Change Assistance Control Module 2 -J770
• CF - Lane Change Assistance Control Module 2, Functions
• CF - Calibration

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

TIP:

• The following information clarifies which version of the lane change assistance is installed in the vehicle (SWA3.0).

-- Secure the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- to the Calibration Unit:VAS 6350A  mount on the rear left.

Courtesy of AUDI OF AMERICA, LLC

• 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	A4/S4 Sedan	A4/S4/RS 4 Avant	A4 allroad
Adjustment dimension height in mm dimension -a-	815	800	836

-- The indicator on the base of the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- must align with adjustment dimension on the measuring scale -1- on measuring field -arrow-.

Model	A4/S4 Sedan	A4/S4/RS 4 Avant	A4 allroad
Left adjustment dimension read in mm on the measuring scale -1-	709	714	714

-- Connect the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- to the vehicle electrical system voltage.

-- Bring Calibration Tool:VAS 6350  into horizontal position by turning the plastic feet.

• Observe the bubble level (sight glass) on the Calibration Unit:VAS 6350A  -arrow-.

-- Turn on the Calibration Tool - Linear Laser -VAS 6350/3A- on the Calibration Unit:VAS 6350A  .

Courtesy of AUDI OF AMERICA, LLC

-- Wear "laser protective eyewear".

-- Align the Calibration Tool:VAS 6350A  so that the Calibration Tool - Linear Laser -VAS 6350/3A- strikes the center of the emblem on the rear lid.

-- Check the distance on the left and right sides between the catch brackets of the Calibration Unit:VAS 6350A  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 (6.6 feet) (6.6 feet) 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 Calibration Tool - Lane Change Calibration Tool -VAS 6350/4-.

Procedure 

-- Turn on the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- at the power switch -3-.

• The green LED -1- must turn on.

-- If the red LED -2- turns on: check the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4-.

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

During the program sequence, there is a prompt to switch the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- from the left to the right side of the Calibration Tool:VAS 6350  .

Courtesy of AUDI OF AMERICA, LLC

-- Turn off the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- 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	A4/S4 Sedan	A4/S4/RS 4 Avant	A4 allroad
Adjustment dimension height in mm dimension -a-	815	800	836

-- The indicator on the base of the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- must align with adjustment dimension on the measuring scale -1- on measuring field -arrow-.

Model	A4/S4 Sedan	A4/S4/RS 4 Avant	A4 allroad
Right adjustment dimension read in mm on the measuring scale -1-	709	714	714

-- Turn on the Calibration Tool - Lane Change Calibration Tool -VAS 6350/4- 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.