Matrix Led Headlamps, Adjust/Calibrating, 8IY, 8JT

• The Matrix LED headlamp is calibrated using the Vehicle Diagnostic Tester => .
• For this procedure, the low beam is adjusted first on the left headlamp and then the matrix high beam is calibrated immediately after that. Then the low beam is calibrated on the right headlamp, followed by the matrix high beam.

Special tools and workshop equipment required 

• Vehicle Diagnostic Tester
• Headlamp Adjusting Unit: VAS 621 001 
  Fig 1: Headlamp Adjusting Unit

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The headlamp must be adjusted/calibrated after the following procedures:

• Headlamp position was changed (removing and installing, loosening and tightening the screws)
• The Headlamp Range Control Module -J431- has been replaced.
• A level control system sensor has been replaced.
• There is an entry in the DTC memory that indicates the matrix headlamp basic setting/calibration is missing.

Requirements

• Pay attention to the testing and adjustment requirements. Refer to HEADLAMP, ADJUSTING, GENERAL INFORMATION .

Procedure 

-- Turn on the low beams (but not set at "Auto").

-- Connect the Vehicle Diagnostic Tester.

-- 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:

• Vehicle functionality
• Headlamps, basic setting

TIP:

The headlamps move into the basic setting with this program.

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

-- During the program, it will be asked to perform a headlamp adjustment.

-- Align the Headlamp Adjusting Unit : VAS 621 001  in a distance of -a- = 100 mm to the vehicle center. Refer to Operating Instructions of the VAS 621 001.

-- Remove the front cover for the fender. Refer to OVERVIEW - FENDER .

-- Check the parallel alignment of the Headlamp Adjusting Unit: VAS 621 001  to the vehicle transverse axis by aligning the Headlamp Adjusting Unit: VAS 621 001  laser beam on the left and right front fender bolts -arrows- (example photo).

• To prevent a glare for other motorists, pay attention to the exact orientation of the headlamp adjusting unit.

-- Push the Headlamp Adjusting Unit: VAS 621 001  in front of the left headlamp and check the parallel alignment again.

-- Align the Headlamp Adjusting Unit: VAS 621 001  centered to the indicated segment -arrow-.

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-- Press the "OEM" button -arrow- on Headlamp Adjusting Unit: VAS 621 001  in the main menu.

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-- Select "Audi" -arrow-.

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Shown on display:

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-- Press the button -arrow- for the left low beam headlamp.

-- Wait until the light measurement is complete.

-- For height adjustment of the headlamp, first adjust the cut-off line under the separating mark using the adjusting screw -1-.

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-- Then adjust the cut-off line on the dividing line starting from the bottom.

-- For side adjustment, turn the adjusting screw -2-.

-- The adjusting screw -2- for the side adjustment must be secured with a plug after the adjustment is made on USA vehicles. Plugs. Refer to the Parts Information.

-- After successful adjustment of the low beams press the left button -arrow-.

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A reference segment is activated as the program sequence continues.

-- Position the Headlamp Adjusting Unit: VAS 621 001  centered to the headlamp reference segment.

Shown on display:

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-- Press the button -arrow- for Matrix beam 1.0.

-- Wait until the light measurement is complete.

Shown on display:

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• The angle value of the edge of the inner reference segment for the left headlamp is shown.

-- Enter the angle value -arrow- of the inner reference segment edge in the Vehicle Diagnostic Tester. While doing so, pay attention to the sign if necessary.

Shown on display:

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-- Press the button -arrow-.

During the program sequence you will be asked to move the Headlamp Adjusting Unit: VAS 621 001  from the left to the right side.

-- Align the Headlamp Adjusting Unit: VAS 621 001  in a distance of -a- = 100 mm (3.94 in.) to the vehicle center. Refer to Operating Instructions of the VAS 621 001.

-- Check the parallel alignment of the Headlamp Adjusting Unit: VAS 621 001  to the vehicle transverse axis by aligning the Headlamp Adjusting Unit: VAS 621 001  laser beam on the left and right front fender bolts -arrows- (example photo).

-- Push the Headlight Adjusting Unit: VAS 621 001  in front of the right headlamp to check the parallel alignment again.

-- Align the Headlamp Adjusting Unit: VAS 621 001  centered on the low beams segment.

Shown on display:

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-- Press the button -arrow- for the right low beam headlamp.

-- Wait until the light measurement is complete.

-- Adjust the right headlamp low beams the same way as the left headlamp.

Shown on display:

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-- After successful adjustment of the low beams press the right button -arrow-.

A reference segment is activated as the program sequence continues.

-- Position the Headlamp Adjusting Unit: VAS 621 001  centered to the headlamp reference segment.

Shown on display:

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-- Press the button -arrow- for Matrix beam 1.0.

-- Wait until the light measurement is complete.

Shown on display:

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• The angle value of the edge of the inner reference segment for the right headlamp is shown.

-- Enter the angle value -arrow- of the inner reference segment edge in the Vehicle Diagnostic Tester. While doing so, pay attention to the sign if necessary.

-- After the calibration is finished, read the DTC memory and process potential entries.