Congratulations on your recent purchase! Like most of us here, you're gonna love it.
Re: your AC problem. The rear AC can work independent of the main controls or can be controlled by them. If they are working independently, then the switches on the back of the center console may be set to Cold, Cold air and thus the problem. Check the Rear AC button on the dashboard. It's one of the cluster of 8 buttons above the Nav screen. If it's activated, then turn it off and see if the cold air is still coming out of the rear vents.
Good luck!
Re: your AC problem. The rear AC can work independent of the main controls or can be controlled by them. If they are working independently, then the switches on the back of the center console may be set to Cold, Cold air and thus the problem. Check the Rear AC button on the dashboard. It's one of the cluster of 8 buttons above the Nav screen. If it's activated, then turn it off and see if the cold air is still coming out of the rear vents.
Good luck!
