2016.5 - Audio gone dead

[atlauren]

Hi all! My CX-5 is a 2016.5 Touring.

Just lately, the audio function in my 2016.5 system has completely died. The control knob elicits zero response from the Music section of the display. No FM, no AM, no CDs, no ... any other audio source. Just before it went dead, the sound was garbled; it sounded kind of a like when someone butt-dials you and you get the sounds from their pocket.

Bluetooth still functions (attaches to paired phones), but no audio.

CarPlay functions and controls the phone as a a display, but no audio. If you start playing audio on a CarPlay app, it plays through the phone's physical speaker.

I've checked all three "Audio" fuses, and the "Bose" fuse. (My car doesn't have the Bose system. Why does it have a Bose fuse?)

Is this a head unit issue? A software issue? And amp / wiring issue?

Ideas welcome!

 

[N7turbo]

CarPlay functions and controls the phone as a a display, but no audio. If you start playing audio on a CarPlay app, it plays through the phone's physical speaker.

I am unsure how it would know to use the phone speaker. But in the case of a blown amp, you would have no change in operation other than silence or noise in the output. To me this points to the head unit.