Does anyone know if there is a certain way to code the Bluetooth unit 1K0051473 for the premium 7 unit in a 2006.5 GTI when running Sat or Aux? i was originally running the Sat unit wires as an aux input since I don't use my XM module, but when I installed the Bluetooth it was showing line channel errors until I unplugged the sat blue plug from the back of the radio. The phone wouldn't work until I did this. I hate the sound quality of the music through the Bluetooth and would like use an Aux input. I was thinking of installing the aux by using the CD changers, basically how VW does it.