Why not give a factory reset a shot if you've got that option? Just check for a hard reset guide for your model, usually, it’s just a matter of pressing a couple of buttons at the same time. That’s usually what I do if my infotainment system starts acting up!
Absolutely no loose wires ends - just a socket hangin’ out with its plug unplugged. Now grab a round toothpick, keep it nice and parallel to the glass, then just shove it straight in there and pop that plug out. Try it and see if it does the trick.