I have just fitted my OEM bluetooth today, it works fine except the Mic is not working, I have tried swapping the polarity but still nothing. It is all new apart from the module.
Could the mic itself be faulty? On advanced measuring blocks on VCDS it reads as no real voltage drop when the mic is plugged in (Around 7.8V) Could the Mic be broken? Or the module damaged somehow? (Short circuit Mic wires maybe??)
Any help would be great. I think I am going to order a new Mic tomorrow from Audi to rule that out.