My Prius will not turn off. This morning we started it as usual and got all the dashboard lights on, including the triangular red warning light. The electrical system was on, but not the information screen. We could not turn the power off again. We tried inserting the smart key, but now that key is stuck and cannot be removed. We finally had to leave in another car, and left the Prius locked up manually. It was completely dead when we got home, but the key will not come out. It is Sunday, so the dealer is closed.
Did you try pressing and holding the power button? By "information screen" are you talking about the display containing the speedometer and odometer or the MFD (multi-function display aka the color touchscreen). If it's the former, see http://priuschat.com/forums/gen-ii-prius-main-forum/56597-my-prius-will-not-turn-off-3.html.
Thank you for your responses! My situation sounds a little more dire in that the dashboard lights were on, and the triangular warning light was on. Only the information screen was off, and we could not change gears. Since we could not turn it off, we ended up having to lock it up with the lights still on, so now it is dead.
Do Not jump start it unless you are completely clear on how to do it. Doing it wrong can cause hundreds of dollars of damage to wiring harnesses, the inverter and computers. Have a dealer send someone to start it or tow it on a flatbed to the shop.
I noticed a similar problem when my 12 volt battery was low. There is a jump point in the fuse box under the hood, or you could go to the battery in the back, passenger side. The only issue is DO NOT reverse the polarity. As long as you are comfortable doing that, you should be fine. You probably need a new 12 volt battery. There are several posts by Hobbit, myself and others on how to do this. Hobbits is the best for how to info.
A question.... They sell fancy booster cables that sense polarity so you don't need to pay attention when hooking them up to boost a car. Although these are fancy, they also are quite cheap. So, why doesn't Toyota put the little circuit from those cables behind the boosting point and protect this uniquely vulnerable car? Back to the OP.... sure hope it isn't the combination meter.