My radio has stopped working in my 2014 Jeep Grand Cherokee. My backup cam still works, but the radio screen stays in the “Jeep Sirius XM” screen. No volume will come out of my radio and I can’t use the AC function to control where the air comes out.

I have checked all fuses, unplugged the battery and let it sit for 10-15 minutes, and I’ve tried manually resetting the radio by pushing the volume and tune buttons simultaneously. I’m completely out of ideas. Anyone else have any other thoughts before I take it to the dealership?