Auto headlight driver module - Automatic light height control: Reduces the headlight beam height on narrow streets to avoid illuminating pedestrians or oncoming vehicles. The system automatically turns the lights on when you enter low-light environments, so manual operation is not required. - One piece for HID xenon headlights: For BMW 4 Series and 5 Series with TMS driver control module, compatible with part numbers 63117316187 and 63117533073. - OEM numbers: 7355073 and 7316187. - Build quality and durability: Offers improved heat resistance and shock resistance, with robust craftsmanship and reliable performance. - Compatibility and scope: Designed to work with the specified BMW models and Xenon HID headlight systems, ensuring proper integration with the vehicle’s existing electrical and control architecture. - Practical use scenarios: - Night driving on narrow urban streets where glare must be minimized for pedestrians and oncoming traffic. - Driving in poorly lit areas or entering/exiting tunnels where automatic headlight activation enhances visibility and safety. - BMW 4 Series and 5 Series owners seeking seamless HID headlight control with improved thermal and mechanical reliability.