I've got the RNS Sat Nav system and VW Bluetooth fitted to my car. Using the iPhone 4 I can connect to Bluetooth in the car without a problem and it works great! Similarly, plugging the iPhone into the MDI works a treat, being able to control the iPod through the stereo system. The problem that I'm having is that for some unknown reason, if the Bluetooth is on and the iPhone plugged into the MDI, you can't always hear music through the Stereo. You can control the iPhone and select songs and everything works as it should but no audio come out!
Simple solution for me was to spend a day converting my iTunes library to MP3 and organising it onto an SD card before copying the whole lot to the internal hard drive. Geez that took time to do! Works excellently though now, using Bluetooth on the iPhone, plugging it into the MDI (for charging) and playing music off the Hard Drive.
Great solution for me, but if someone specs the car without the sat nav system then you won't get a hard drive and could run into problems when using Bluetooth and MDI connection together on the same iPhone.
Sorry... a bit waffly but hope that makes sense!
James
