HID Xenon Headlight Ballast Control Module 5DV008290-00 For BMW 5 7 X5 Genuine
BMW 5 E60 E61 7 E65 E66 X5 E53 Z4 E85 E86. Replace this instead of the whole headlamp if your old module is faulty. Any installation done by yourself will cause lose of the warranty. That is the price for ONE device ONLY.