Bkezar

My 07 S550 went to get windows tinted. When I got in the car and went to reverse, my backup camera did not display. I also noticed, no radio, or nav on my command display. The only thing that shows is a little bar at the bottom of the display that shows AC info. I can move the puck and make changes to my AC, just nothing else. Does this sound like a fiber optic loop issue? I also noticed that my CD player does not show the CD I have in there, or let me load or eject any disks.

Thanks for your help!