Problem Lights on automatically Audi A3 8L



I have a small problem, and maybe someone on the forum has encountered it before, or can at least give me some advice. Until a week ago, my headlights turned on automatically when I started the engine. Now they don't turn on automatically anymore (but it works if I move the switch) - and it's quite strange, because I didn't change anything in the car, I didn't give it to anyone to drive and it wasn't even serviced.

Finally, the idea is that I want my headlights to turn on automatically again. Does anyone know how this can be done? (no hacks with a wire drawn from the switch to the light relay, etc., because I didn't have anything like that).