I have a 2006 A6 Avant with air suspension and AFS (turn while turning) HID headlights. They have stopped turning. There is no code. Showroom effect works although they only turn while I turn the wheel. I think I remember them turning back and forth by themselves when in showroom mode. MVB for steering wheel shows proper changes in degrees when I turn the wheel but the R & L movement MVB's stay at 0. Can anyone lead me on a diagnosis path for this problem. Secondly, how does one tell if, after all these years, my car needs updates to it's software?