Another NAV ?
 

Just curious if someone has had this problem also. I have a 05 Grand Cherokee LTD.
This has the NAV/CD unit. The other day the display quit and the only things it can still do is-the volume can still be controled from the steering wheel, the station preset still works, on/off button works but nothing else. Can't select discs or station bands or anything else.
Irritating to say the least. Any ideas or experience like this?
It appears that the unit has 3 power sources or fuses if I read the wiring diagram right.