Radio volume just randomly goes up all the time while driving. If you don't manually turn it down there next time it will go up some more before eventually it is blowing the speakers out. So you basically just have to keep turning it down every time it goes up. Not to bad if your just driving 5 miles down the road. Terrible when your on a 10 hour business trip. I had to turn the radio back down 100 times today on that 10 hours trip. Lincoln dealership said there was a fault in the fcim but the part is on back order and they have no idea when or if ever it will be available. Oh yeah it is 700 dollars plus labor too.