Navi screen opens when volume knob is turned.

Hey guys I'm new to the forum and newbie Prius owner. I've tried to research this problem heavily but haven't found anything. I have a 2011 Prius Four with JBL/navi package. When I go to turn the volume knob up or down the navi screen pops open as if I were going to eject or insert a cd. Only sometimes will it close back up when I press the eject/close button otherwise I have to twist the volume knob back and fourth until it randomly closes. THEN, when I set FM/AM station presets, power off the car, power car back on, the screen shows "loading" and everything resets except for the Bluetooth phone settings. Has anyone had this issue? Is there any firmware update I need to install via usb? Thank you in advance. Glad I found this site!