Headlamps: Check Adjustment
Special tools and workshop equipment required
- Headlamp Adjusting Unit: VAS5209B
- Or: Headlamp Adjusting Unit: VAS621001
To check the headlamp adjustment (excluding Matrix LED headlamps), the headlamp adjustment units VAS5208A, VAS621 005, VAS5046A and VAS5047A can also be used. Checking Matrix LED headlamps requires the VAS5209B or VAS621001 adjustment units.
During inspection, the check is merely a shortened version of a headlamp adjustment test, which is due, for example, after repairs and does not replace this one.
Vehicle load and tire pressures do not need to be adjusted.
A basic setting for the headlamps does not need to be performed via the Vehicle Diagnostic Tester.
According to the repair information specification, the checking and adjusting of the headlamps is a repair procedure and should be charged separately.
Procedure:
-- For vehicles with manual headlamp range control, set the adjusting mechanism to the basic setting.
-- Activate the low beam.
-- Align the headlamp adjusting unit parallel to the vehicle and place it at a distance of 30 to 70 cm -dimension a- centered in front of the headlamp. The maximum deviation from the center point of the light-emitting surface is 3 cm -dimension b-.
-- Adjust the angle of the headlamp adjusting unit so that the headlamp light distribution on the testing surface meets the following specification: horizontal cut-off line on the separating line -1-.
-- Read the set angle value of the headlamp adjusting unit.
-- Repeat the procedure on the opposite side.
-- Compare the left and right angle values.
-- If they vary from each other by 2.0% or higher, check and adjust the headlamp setting according to the repair information specifications. Refer to HEADLAMP, ADJUSTING .