Hey y’all, I have a 2018 mustang ecoboost. And about a month ago we had negative degree weather and during my stereo screen started to slowly go out, one day it took 10 minutes to turn on and the next it never turned on and hasn’t since. The screen, backup camera, radio and both USBs do not work. I’m past warranty time so and I’ve taken it to the dealership where they couldn’t figure it out within an hour and I wasn’t about to spend more money just for them to tell me the problem. I have changed fuses and disconnected the battery. I’m hoping someone has had this problem and may be of assistance! Please and thank you!