A simple fix. Disconnect positive lead from car battery, wait 3 minutes for electrical current to exit vehicle's electronics system, reconnect positive lead to battery, then turn on ignition switch. The display will be blank, but after powering up radio, display will show "12:00," but will not be flashing. Simply set clock and the problem is solved. It's best to start car and let idle for 3 minutes to allow electronics system to fully set to factory settings. This solution also clears car's onboard computer of any glitches that may cause other issues with vehicle.
anperez65, June 2013