Adjusting Main Headlights

Information

Read the operating instructions for the headlight aiming device and meet the following test and adjustment conditions:

Vehicle and headlight aiming device positioned on a horizontal, clean surface.
Vehicle parked safely and ready to drive, empty, including all operating fluids and fuel.
All doors and rear lid closed.
Tyre inflation pressure corresponds to the specified values.
Driver's seat occupied by one person or a weight of 75 kg.
Steering in straight-ahead position.
On vehicles with air suspension, the chassis height must be set to Normal or Medium and suspension levelling (air suspension) must be completed.

Align the headlight aiming device -1- at a 90° angle to the longitudinal axis of the vehicle and position it at a distance of -a- > Length 300 mm + 300 mm in front of the headlight.

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Headlight aiming device
Set the tilt angle of the light/dark limit of the dipped beam headlight on the headlight aiming device > Adjustment value - 1 % and align the collecting box with the centre axis -b- of the dipped beam headlight.

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Headlight aiming device
Switch on ignition and dipped beam headlights.
Check the headlight setting.

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Light distribution of dipped beam headlight
1. 4.1 The horizontal part of the light/dark limit must run along the dividing line -1- .
2. 4.2 The salient point -2- of the horizontal part and right-elevated part of the light/dark limit must be positioned along the vertical line running through the central mark -3- . The bright core of the light beam is at the right of this vertical line.
Correct the headlight setting if necessary.

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Headlight adjusting screws

5.1 Adjust the height of the light/dark limit at the inner adjusting screw -1- .
5.2 Adjust the lateral dimension of the light/dark limit at the outer adjusting screw -2- .