I was driving around in my '16 CX-5 sport today and listening to the radio. All of a sudden at a traffic stop light the display on the entertainment system went out, but I could hear the audio. I tried to play around with the wheel knob in the center console, but nothing happened. Pulled in to a parking lot, turned off the car and started it, but no display, but I heard the radio. Went into a store for about half hour and came back. Then started up the car, and the entertainment system display was back on and I could change station, etc. Also, I could hear audio. This is the first time this has happened to me. Are these systems prone to failure?