I've had problems with my SYNC system from the beginning. I've a 2015 C-Max Hybrid. First, my screen developed a green strip down the left side of the monitor. Next the voice that says, "tell me a command" went away and mysteriously returned. On top of all that, the screen has had an intermittent momentary flash. Everything keeps working, but the screen flashes for the blink of an eye. But the oddest thing I have going on is that when the weather is bad outside (snow or heavy rain) whenever I stop at a red light, a high pitch tone emits from the system, but if I put the car in neutral or park, the tone goes away. This only happens in bad weather and when stopped with the car in drive.
Anyone else have these issues?