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      05-03-2019, 07:56 PM   #9
European Editor
Dackelone's Avatar

Drives: N54 e82
Join Date: Feb 2010
Location: Bayern, Germany

iTrader: (1)

On USA cars the footwell module has an extended warranty. I think up to 12 years. ? Not 100% on how long it's for, but its been way extended.... but it's very common for the FW3 module to fail. Are you in the USA ? A new FW3 is your best bet. You will also have to code it to your car.

It sounds like its your footwell module wince you swapped the complete headlight units and they still don't work. There is an ECU under each xenon headlight. But like I said... it sounds like it's your footwell module.

As for how to figure out when you have a bad bulb... you can press and hold the BC(Board Computer) button down and read out the error code.

DIY: How to figure out which bulb is bad/out on your car?