fuse box, I/P instra panel box
learn to test all fuses first. if all good scan tool is next.
F5DA above, fuse 5 ,digital audio? DA?
there like 12 audio option systems sold new on this car, and are complex. the service manual , covers all that.
fuses can be tested 2 ways. (besides plug and guess)
an ohm meter or continuity buzz box.
or a voltmeter.
0 ohms good, infinity bad.
12vdc both sides good (key on)
0vdc one side bad, (key on) blown fuse.
next time say if car can be driven. if can get it fixed in a shop.
ASE shops are best, stealerships not so.
as you can see the
problem is power and , is related to failing communications if fuses are in fact good. what stops you from checking fuses first (IDK)