I have a rather simple question. I just recently purchased a V8 Touareg. My window sticker says "Automatic Headlights". The manual is pretty vague on this function....and to be honest, as dumb as I feel, I can't figure out how this is actuated. The only way I can get the lights to turn on is by rotating the headlight switch. Other than that, they come on as DRLs but during "dark hours", they don't switch on by themselves. Thoughts?