Q: Nav and radio cutting out

This issue seems to happen about once or twice every hour I am driving, but it is not consistent. Everything will be working normally, then the nav screen in radio will go dark and quiet, only to come back about five seconds later just fine. May or may not be related, but prior to this I have been getting "Check SH-AWD" warnings, but no OBD codes. I have also gotten several ABS/Traction/Stability error messages, but those, like the AWD errors, seem to have quieted and now just have the radio/nav issue. I have a VSA code 62 and AWD code 77 in the nav message center. All these issues appearing in last 3 months or so, seemingly out of nowhere.

My car has 92000 miles.
My car has an automatic transmission.