So I have had my second incident in a week of my Sync system freezing up. Both times it has happened at the end of the day when my car had been sitting out in a sunny parking spot all day and was hot (I'm in TX). As the car cools down, I begin to get functionality back. Frozen screen, no volume, no bluetooth, no nothing. This week had the screen and could navigate in it but no sound. I can spin the dial all day and nothing. Had it at the dealership a week ago and they had no idea what I was talking about but I got them to do a factory reset of the system. They also took care of the recall for the lift gate. Now here I am one week later and SYNC dies again. I know several people have had this issue. Has anyone had success figuring out why it is happening or how to correct it? Took it to a second dealership last night and they acted like I was nuts.