Stuart FL, same AC problems, not a temp issue, but a plumbing issue as loud blowing noise from pax side dash but little if any air from vents. Tried changing vent to windshield, feet, combo, to no avail. Turn system off for several minutes until dripping sweat, no change. System seems to shift to this mode after some 20 mins of driving at highway speed. Dealer tried to get it to happen by driving around parking lot , not going to happen there. This seems like a poor system component affecting many G80s. I am going to look to another car and not a Genesis. Nothing in the posts above cite any solution to this problem. Each time it happens, a new problem with a good customer begins, with waste of time at dealer, etc. Hyundai should step up on this problem, and at least inform service teams of issue and solution!! Duh??