First of all, the car is a b7 a4 with symphony II non-bose.
I just installed a EU spec rns-e (updated to US firmware) and have a few problems.
1. EDIT: started working by itself..... let's ignore this
2. None of the radio works. All I get is static noise. I have checked and confirm that I have both the diversity antenna and the radio antenna plugged in. I can do a scan/step, and it will never find anything.
Does the bose system have a different harness than the non-bose system. Is there any chance of the seller accidentally provided the wrong harness? If anyone can shed some light, I would highly appreciate it.
Yes, the cable harness for Bose and non Bose are different. When you have a cable harness 4 plastic connectors (including a brown one): it's a NON Bose adapter. If you have 3 plastic connectors: it's a Bose adapter
Is there some information in the engineering mode that could help determine why I am not receiving a signal?
I have looked at the radio test mode; unfortunately, i do not know enough about how radios operate to tell what the data means. Can someone briefly explain how/what i can determine from the engineering mode data? thank you.
The best would be to check #37 with VAG-COM or with the dealer's VAS, a missing antenna signal is cause a fault in #37. Also, can you listen to MP3? This would at least confirm that you adapter is OK. If you can't listen to MP3 or CD and don't hear the navi lady either I would check the harnes first.