The steering sensor is the only one I kinda understand because it they adjust the steering wheel it affects DSC. If the car is going straight and the steering wheel is properly set, DSC sees it has the wheel is turned and car is going straight. It either activates DSC or throws a fault. I know the one about the backup camera is to ensure the lines illustrating where the vehicle will go in relation to how the steering wheel is turned is displayed properly, but the others I don't really know about.