Xenons4U deals in specialized automotive products. As an online retailer, we provide services for the best automotive products across the UK. We offer the best Hella 5DF008704-02 A0038205826 Leistungsmodul Kurvenlicht Control Unit which is factory fitted on Mercedes-Benz cars with Xenon or Bi-Xenon headlights. It is responsible for controlling auto levelling also known as range adjustment and corner lighting. When you turn your steering wheel to the left or right side, Xenon HID lights also move to the same side. If any of these functions aren't working anymore or you see an error message on your car's dashboard related to kurvenlicht ballast, then it needs to be replaced. To know more about the product, simply visit our website.