I have a 2007 prius full options, sometimes, mostly in the morning, the red triangle shows up in the dashboard and a red vehicle picture shows on the top left of the navigation screen. After moving the car and turning it off and on several times, the red triangle appears again. Any suggestions
You may be in need of a new 12v battery. A weak battery can give strange warning lights when failing.
See here for the built-in battery test procedure: http://priuschat.com/forums/newbie-forum/73400-weird-stuff-happening-mpgs-dropping-test-battery.html