I have an F06 640i with LED Adaptive Headlights in the U.K. I recently developed the dreaded left hand dipped beam fault. Tests proved no fault in the attached modules. I was faced with a replacement unit from BMW at a cost of over £3000! Luckily, I found
servisas@xenonled.lt in Vilnius, Lithuania who undertook to disassemble and service the headlight for a cost of only circa 300 Euros. I used DHL to transport the headlight to and from Lithuania. Obviously I was without the use of the car whilst the headlight was away but they have a pretty quick turnaround for this service. I have no connection with the company but feel that good service should be recognised. Company website is at
https://xenonled.eu/.