I just bought a 2004 S4 a couple months ago and I noticed that my headlights don't go up and down when I turn on the headlights. I don't get any warning lights on the dash or anything. I took a look at the leveling sensor located in the driver's side wheel well and it seemed fine. When I unplugged it, the warning light came on the dash and then went away when i plugged it back in.
Any ideas?

Thanks for the help.

 

I owned a Lexus IS300 that calibrated every time the headlights were switched on. Though, I never noticed any movement in the Audi auto-level system. I think that's normal on these.

Pull up to a wall and mark the beams position on the wall and then load the rear of the car with people or another substantial amount of weight and compare the beam location. This should confirm the malfunction if any.