With the stalk switch's rotating ring in the 
position, dipped beam is activated automatically in weak daylight or darkness, when the car's electrical system is in ignition position II or when the car is running.
With the stalk switch's rotating ring in position, dipped beam is also activated automatically if the rear fog lamp is activated.
Dipped beam is always switched on when the rotating ring on the stalk switch is in position 
when the car's electrical system is in ignition position II or when the car is running.
Tunnel detection
The car detects when it is driven into a tunnel and switches from daytime running lights to dipped beam.
Note that the rotating ring in the left-hand stalk switch must be in mode for tunnel detection to work.