I started getting "android auto connection is interrupted" today like every 3-8 minutes. It just kept reconnecting itself and it's rather annoying.
in my prius C if you disconnect the bluetooth there is no way to get it back except to turn the car off and on. its super weird, but rarely loses connection unless i disengage it. I plan to do wired apple car play when i get my id4.I haven't, but I'd suggest the holy grail press-and-hold the infotainment power button for 10 seconds to reboot the infotainment system.
I do have this problem in my other car and I've found a quick shortcut to disable / enable Bluetooth and that works; I wonder if there's a similar toggle in the ID.4?