Resetting Main-Beam Assistant To Basic Setting

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Under the following conditions, it may be necessary to reset the main-beam assistant to basic setting:

Windscreen or interior mirror has been exchanged, and windscreen and interior mirror are in correct installation position, see VISUAL INSPECTION OF MAIN-BEAM ASSISTANT .
Despite a lengthy journey at night of a straight section with easily recognisable road markings (drive straight for a distance of approx. 50 km: a relatively straight stretch accelerates the directional orientation).
The functional quality of the main-beam assistant is outside the system tolerance, even after the journey at night.

System tolerances are:
- Inclement weather conditions (e.g. fog)
- Poorly lighted road users (e.g. cyclists, pedestrians)
- Incorrectly interpreted road signs (e.g. the warning sign for a tight curve): Reflections from traffic signs may be incorrectly interpreted by the main-beam assistant as a vehicle driving ahead or as oncoming traffic.
- Driving over crests and/or through dips