My AVIC-X920BT just started having this same problem. I have checked to make sure the "Application Version" is 2.003 (latest firmware on the Pioneer website). My unit behaves in the following manner:
- Turn the car on
- X920BT will boot
- When I go to the Settings page, the Bluetooth Settings Icon is not active and stays inactive for a minute or more. When it does become active, all of the items are grayed out, but occasionnally the "Bluetooth" status line shows that it is "ON" (with everything still grayed), but when I exit and come back into the menu, it then shows it is off.
- The firmware item is the only active item and when I press it, there is nothing on the firmware version line.
- Another interesting thing is that when I go to the "HOME->Settings->System Settings->Service Information" and press and hold the left upper corner of the "Service Information" screen, the firmware revision line does not show a version number and it is the only line that is like that.
- It seems that there is perhaps a physical connectivity problem with the bluetooth hardware. I had this unit installed by a professional installer at the dealer, so I don't know if there is a plug-in accessory for the bluetooth function (module, antennea, etc). Any help would be great, because the handsfree feature of the unit is the main reason I bought this.