[arucano]

I have not checked for replacement coil on the M6 but I was able to get one for an E39 that I had. I no longer have the info on the source however. Given the cost of a whole new compressor, I would try to see if an electric motor rewinding shop can rewind the coil for you. I have not seen the coils for the newer cars yet so I don't know whether that is possible, but is worth a shot.