A: I am familiar with your problem. You most likely have a Peak unit, or a knock off of a Peak. What is happening is due to cellphone signals from cars passing by you, as well as infrared signals from alarm systems in buildings you are passing by. There are two ways to resolve the problem. The easiest way would be to unplug the monitor from the cigarette lighter plug except when you are going to actually use it when backing up. In most cases the plug will break after a few months unless you’re extremely careful. The other way you can get rid of this problem would be to run a wire from the back-up lights to the monitor as a power source. That way, unless the vehicle is in reverse, the monitor will not flash on as you drive.
Car Care Tip: If you are a do-it-yourselfer, and you are running wires in your car, be very aware of safety. Make sure all wires are out of the area of the passenger foot area, as well as the exit and entry thresholds of the vehicle.
Larry Rubenstein is a master technician who owns a North Shore service station. His column appears every Saturday. Write to Larry at The Salem News, c/o Auto Scanner, 32 Dunham Road, Beverly, MA 01915, or send an email to email@example.com.