i replaced the aerial at the back of the sat nav with a new ford aerial which has two wires built into one which didn't fix the problem! If you press the info key next to the Home key on the front of the satnav it should show how many satelites its tracking, if it shows none then the aerial is indeed faulty.
I ordered this Antenna GPS active connection Fakra or type gps antenna fakra satnav for audi mmi dvd and connected it to the connector at the back of the satnav head next to the aerial connector. Hope this helps.
Anyhow for some reason, today my satnav/radio head unit won't powerup. I've changed all the fuses and the one at the back of the unit and still nothing. ANyone able to advise me?
Thanks in advance