Xenons4U is the UK's leading high quality and affordable car parts provider. We takes pride to offer the best BMW 7269494 Lear 532385808 AHL TFL TMS Headlight Driver Module. Factory fitted on 5 Series F10 F11 Pre-Facelift and F07 GT with Xenon Adaptive Headlamps and D1S 35W Gas Discharge HID bulbs. It is responsible for light levelling also know as vertical aim control, LED Angel Eyes (Halo Rings) Daytime Running Lights and front turn signal indicator lights. To identify when you need to replace headlight control module there are many different malfunctions and errors, it could show red headlight error sign, show vertical aim control failure, it means that your xenon lights can't be aligned and light will be pointed downwards only, also it controls LED Angel Eyes (Daytime Running Lights) if they flicker or both rings have stopped to shine at all or LED turn signal doesn't work it means that BMW headlight driver module has failed. For more details about compatibility list or book your orders visit our website.