KiddFunkadelic
Member
I think I figured it out!
I had to reboot while driving today (bass cutout) and it sounded like the autopilot engage and disengage sounds came from it.
I think it's a speaker connected direct to the AP computer to give audible alerts in case the sound system fails or is down (such as the case with reboot).
I don't know about emergency sounds, but I rebooted this morning to see if I'd get bass back on BT (didn't seem to help), but I had EAP engaged and tried a lane change while the screen was off and it made the change normally but did it silently. The blinkers (I assume they actually came on) did not make any clicking noise like they normally do. Though its possible that the blinkers use the normal speakers and other computer sounds don't I guess.