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So I've got a bench testing harness that supplies power and K-line to the BT module and RNS-E. The RNS-E part works perfectly but the BT module will not connect with VAG-COM. I know all the wires are connected properly though the harness. What am I missing?? I need to code this module on the bench soon!
 

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I don't know for sure but during my crazy testing I had the feeling that the BT interface needs to see an instrument cluster over CAN, otherwise it will play the invisible part in this game. Seriously, I can't remember if it was just the BT part that wasn't working or if it was the whole interface but I had all kinds of problems until I added my old cluster.
 
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