Hello new here, after advice my 2007 Q7 has lost Bluetooth, and the display is saying telephone not installed, located the unit removed it and refitted it hoping that might work , ive run a scan with a code reader and it's saying telephone transceiver no signal so I assume the module is faulty, i can buy a second hand unit but I am getting conflicting information saying it would need reprogramming or is it a straight forward plug and play, thank Ben
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