This blue control light informs you that the following lights are switched on:

The blue indicator light visible in the picture clearly informs that the main beam headlights, colloquially known as "full beams," are on. We use them to illuminate the road over a long distance, mainly at night outside built-up areas. It is important to remember that according to Art. 51 para. 3 of the Road Traffic Act, we are obliged to switch to dipped headlights to avoid dazzling other drivers.