Not a samsung but try to delete the bluetooth device and add it again, also try to reboot your phone. I had a few syncing issues and both of these fixed the issue
I have an S22+ and just had my head unit stop recognizing AA. I'm not sure what the issue is as mine appears to be different than yours. I plug my phone in, it starts to charge and then acts like there is no connection at all. No power to the phone or anything from the truck.