The lights will turn corners with you on the standard Sports Nav, ie even without the safety pack. Switching of AFS will disable this function if you wish. The safety pack should give you lane departure warning system, rear vehicle monitoring (blind spot monitoring), and automatically dipping headlights. Both the LDWS and the RVM can be switched off too. I'm fairly sure how the LED type headlights work is that they switch off part of the light beams as you say. The auto dipping headlights only work when the main switch on the stalk is set to auto, so if you don't like it you can switch the lights to on instead.