Led Headlamp, Adjusting

WARNING: This page is about a different car, the 2024 Audi SQ8, 2024 Audi Q8, 2023 Audi SQ8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

The headlamp must be calibrated after the following procedures:

Headlamp position was changed (removing and installing, loosening and tightening the screws)
The Drivetrain Control Module -J775- was calibrated or replaced.
The Vehicle Electrical System Control Module -J519- was replaced.
The Left Rear Level Control System Sensor -G76-, Right Rear Level Control System Sensor -G77-, Left Front Level Control System Sensor -G78- or Right Front Level Control System Sensor -G289- was replaced.
There is an entry in the DTC memory that indicates the headlamp basic setting 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
Adjusting/calibrating headlamps

TIP:

When this program is selected, the suspensions moves into the air suspension normal level and the headlamps go into basic setting.

-- 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.

TIP:

The image and the following description apply to analog headlamp adjusting units. On digital headlamp adjusting units, for example Headlamp Adjusting Unit:VAS 621001 , follow the operating instructions. Refer to the appropriate Headlamp Adjusting Unit Operating Instructions.

The headlamp adjusting unit must be aligned to the vehicle.

-- To do this, slide the headlamp adjusting unit a distance of 100 mm centered in front of the vehicle and aligned to the vehicle front. Refer to the appropriate Headlamp Adjusting Unit Service Information.

-- Slide the headlamp adjusting unit in front of the corresponding headlamp and check the alignment again.

Courtesy of AUDI

-- The headlamp adjusting unit must be aligned at the center of the marked reflector segment -arrow-.

The horizontal cut-off line must touch the cut-off line -1- on the adjusting unit test surface.

Fig 1: Headlamp Adjustment Graph
Courtesy of AUDI
The bend point -2- between the left horizontal part and the right rising part of the cut-off line must run vertically through the central mark -3-. The bright core of the light beam must be to the right of the vertical.

After adjusting the low beam according to the instructions, the center of the high beam light beam must be on the central marking -3-.

-- To adjust the height of the headlamp, set the cut-off line above the dividing line with the adjusting screw -2-.

Courtesy of AUDI

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

-- For side adjustment, turn adjusting screw -1-.

-- The adjusting bolt -1- for the side adjustment is sealed on North American vehicles with a plug. Plugs. Refer to the appropriate Electronic Parts Information.

TIP:

The right headlamp layout is a mirror image.

-- After the headlamp adjustment has been successful, follow the instructions on the Vehicle Diagnostic Tester display in order to leave the standard air suspension height.

-- Disconnect the diagnostic connector.