Connect Nav+ problem

Hello!
I know this has been taken up before. But no real anwser.
My GPS isnt working.. the antenna picture that should be green isnt green in my connect nav+.
But when i go in to the "sevice" meny, everything is green exept CDchanger and... was it SIM something?
Anyway so in the service meny the GPSantenna and FM/EMantenna is green. Why wont it work?
Have had it in on a carservice place, but they had never seen one before and couldent find a problem.
He said something about when he connected the instrument, the car thought it was -50000 degrees outside... strange...
I removed the unit to se if anycable was loose but all was connected.
Help is needed.

/Andreas

Found a more explaining post:

Just purchased a 51 plate Fiat Stilo, with the Connect Nav+ system. Everything seems to work at the moment but I cannot get the Sat nav system to work. I have read some of the posts on here and checked the service menu and except CD changer and SIM card all were green ( no card inserted during check) and i have software system 9.8

Now maybe I am being a numpty but my I cannot get a route from work to home. I got my home address inputed and could see it on the map function. But the GPS system does not seem to know where the actually is??? i Zoom out and all I see is bland landscape.

When checking the info page it gives longitude and latitude, and the compass turns around, but number of satellites is blank or zero.

Have I missed something basic? I have read through the manual but that does not seem to have any trouble shooting help