My dad ran into a pretty odd issue with his FX50 today and I can't seem to find any information as to what might be going on here. When he started the car for his drive home from work, the nav screen displays the Infiniti splash screen like it normally would on startup, but then it just hangs on the screen for an abnormally long time before cutting to black; after which it only displays the HVAC settings in white text/graphics. Only the HVAC controls, and nothing else pertaining to the head unit works. No navigation, no audio, nothing. It does not respond to any touch or button input, and restarting the unit (turning the car off, waiting, then turning it back on) doesn't resolve it either. I also tried disconnecting the battery for a few minutes to see if it would reset things, but no dice.
Based on the behavior, it almost seems to me like the head unit is failing to boot and it's falling back into some kind of safe mode, but I can't be certain. I'm pretty much at a loss. Like I said, I can't find anything on the web showcasing this same issue for the FX, or any other Nissan/Infiniti (maybe it's out there, but it's buried under a ton of other unrelated nav unit issues). If anybody knows what's going on, and/or has a solution, please let me know. Any input would be greatly appreciated!