AFS stands for "Adaptive Front lighting System". It is also called "Cornering lights" or in German "Kurvenlicht".With this system the light pattern turns the same way as the steering wheel, so when you turn left, the low beam light pattern also moves left. It's not the system where for example the left fog light is activated when you turn left.In most headlights, for example, made by Hella, AL or Valeo this is done by moving the projector left and right. In some ZKW headlights, only the lens/lensholder swivels.Hella also has also developed advanced functions, which changes the light pattern based on oncoming traffic for example. This is also called ILS and used in the Mercedes W211 facelift for example.