On a recent 4,000 + trip, my back up camera monitor kept going to the blue screen at various times for no apparent reason. Most times the picture would come back on, but sometimes it wouldn't come back until I turned the ignition off and started again. Since the monitor goes blue, I would suspect the problem is with the camera. I'm not a fan of Sony, and have noticed an increasing dissatisfaction with their products over the past few years. So long as the camera keeps coming back on, I'll keep what I have. The one I had on a 2007 PC was much better and had sound. Some day I'll upgrade to a better system, but (again) don't sweat the small things--and this is a small thing.