Ok,
So after todays outing in the car, I did manage to connect to the Fiscon.  However, I couldn't get anything to show on screen.  When I hit the phone button, all it does is mute the audio.  When I un-mute the audio (by pressing the phone button again), the volume is significantly lower than it was originally.  Any idea why it wouldn't show anything on-screen?
Also, I received a call while driving, and I had to answer it with the phone (luckily on a decent mount), but the microphone didn't work.  Now, I am connected to the Parrot microphone I had initially installed, mostly because it was already run.  But do I need to get a proper Kufatec or VW mic for this system to work?
Also, I notice from some posts that reverse parking sensors, and the climate controls can appear on the RNS 510 screen.  Is this possible with the standard mk5 equipment?  Or do I need to move up to mk6 components?  If mk5 will work, how would I go about getting that to work?