Over the last few days my 8.4a is starting to act up, it has frozen several times, and yesterday the screen went black, the radio was stilll working and i could change my stations with the steering controls but nothing on the screen, after retarting the car it worked fine this happend three time yesterday and then today the back up camera stopped working until i restarted it. I also noticed that auto start of heated seats and wheel isnt working even thou the option is selected. anyone esle having issues. Ido have some video of this so i can show th dealer, im heaeding in at 1030 monday so i guess ill find out then