I have the premium interior. I noticed there is absolutely no sound coming out of those speakers. When listening to music, even if I switch ambient sound ON/OFF there is no change at all. I guess I should ask for their mobile service to check out what is going on ? I do get sounds from the speakers near the mirrors, but not the ones on top corners.
I do get sound from those top round speakers; if you're not, I'd suggest putting in a service request.