This function is used to adjust the headlights' light pattern.
Note:
Headlight adjustment is a manual procedure.
Headlight adjustment may not be performed directly after the vehicle has been lowered from a vehicle lift. In this case, the vehicle has to be moved at least 15 metres before adjusting.
The vehicle must stand on level ground.
Replace defective headlight glass and reflectors as well as blackened bulbs.
Check the tires' inflation pressure and adjust it as needed.
The vehicle's driver seat should be loaded with one person (approx. 75 kg).
The vehicle should have a full tank or carry the matching weight in the luggage compartment.
The headlights should be correctly installed (gap measurement) in relation to the engine hood.
Test conditions:
Ignition on.
For manual light beam length adjustment: The setting wheel by the light switch should be in zero position.
For automatic light beam length adjustment: Wait for 30 seconds after the light has been turned on.
For version with Xenon lights: Wait for 80 seconds after the light has been turned on. Do not move the vehicle or expose it to vibrations during this time.
The light switch must be in position low beams/headlights (turned to the far right). Do not perform the headlight adjustment in light switch position "automatic low beams".
Procedure:
Place the light adjustment tool directly in front of the headlight.
There are two adjusting screws on each headlight. One for adjusting vertically and one for adjusting laterally.
Use an Allen key to turn the adjusting screws until the light pattern is correct.
Then repeat the same procedure for the other headlight.