Quote Originally Posted by Delfuego View Post
I think it may be more computer related than wiring related. Not ruling the wiring out, but the amount and complexity of computers in newer cars is nuts. I would take it to someone with access to VAG-COM (no jokes) software. The VW software may find a bad computer or another that will not communicate. If that all checks out, I would then look at wiring. Once you start pulling the wiring apart it gets messy and expensive fast. Lokk at the computers first, now a days it almost always related to the computers, or a sensor, or firmware, etc, etc.

Also if you replaced the computer, it will have to be flashed to match the car. Cannot just swap them out anymore.

I have a VW shop / master mechanic I would recommend, but he is in Boulder. That being said. only go to someone that knows their shit with VW & German cars. I learned the hard on this and will never take a vehicle to a non specialized mechanic again. Good luck.
I'm with you on finding a specialist. I had a bit of wiring chewed up so I replaced that harness with a factory part. I have found wiring diagrams for the trans but nothing that shows how it interacts with the whole car. In my youth working on cars the wiring was simple enough that the diagram would show most of the car on one page. Being that the wiring was so mangled I'm not ruling out a damaged module or relay. I'm not looking to get in over my head, I know a VW specialist could get it done quicker than I ever could.