Low beams
When driving with the lighting ring in the 
position, low beam will be automatically activated in weak daylight or dark conditions, when the ignition is in II position or when the engine is running.
With the lighting ring in the position, the low beams will also be automatically activated if the rear fog light is activated.
With the lighting ring in the 
position, the low beams will always be activated when the ignition is in mode II or when the engine is running.
Tunnel detection
The vehicle will detect if it enters a tunnel and shift from daytime running lights to low beams.
Note that the left-hand steering wheel lever must be in position for tunnel detection to work.