HID (Xenon) Headlights, Adjusting

Headlights, Adjusting


Special tools and equipment





- VAS 5051 with VAS 5051/1 and VAS 6017


NOTE: On vehicles with high intensity gas discharge (Xenon) headlights, check DTC memory, erase it and perform basic setting before every manual adjustment via adjustment screws.


Test requirement:
- VAS 5051 tester with VAS 6017 K-wire adapter connected and vehicle On Board Diagnostic (OBD) "55 headlight vertical aim control" selected.







Indicated on VAS 5051:
- In selection -1-, click on the diagnostic function "04 - Basic setting".







Display on VAS 5051:
1 - Enter display group
- Select function "001" in button field -2- for "display group number 001" and press Q button to confirm input.
- Headlights are being moved to set position.







Display on VAS 5051:
1 - Basic setting
2 - Display group 1
3 - Headlight Adjusting

Headlights are now in the set position.


NOTE: Basic setting 1 switches the adjustment mode off and enters "headlights not set" into DTC memory.







Adjustment screws at right headlight.
Arrangement at left headlight is mirror image of right headlight.
1 - Adjustment screw for height-/lateral adjustment
2 - Adjustment screw for vertical adjustment
- For height adjustment, turn adjustment screws -1- and -2- with the same number of rotations.
- Only use adjustment screw -1- for lateral adjustment.







Display on VAS 5051:
- Press "UP" button to change into display group 002.
1 - Basic setting
2 - Display group 2
3 - Adjusted position adapted

The control module has now learned this position as the adjustment position.


NOTE: The entry in DTC memory ("Headlights not set") is erased and adjustment mode is re-initiated.


- End function "04 - Basic setting" by pressing "LEFT" button
- Select "06 - End Output"