Double Start when near or below 0°F

Been noticing lately I've been having to do a double start with temps get real cold! By saying a double start, I have to press the power button twice in order for the engine to start. The first power on shows all the lights on the dash with an orange light on the button, second start-which is pressed immediately after the first-puts the car into ready mode and will start the gas engine. I've read this may be a the 12v battery going bad, but I don't believe this is the problem. I ONLY have to do a double start when temps get near or below 0°F. Out of curiosity, anybody know why this happens?

 

I'll give that a try Patrick, may have been too gentle with the brake. Tomorrow will be the coldest air I've ever started my Prius, with a high of -16°F, so this should put it through the test!

 

Thanks Patrick, the problem was I wasn't holding the power button long enough. Went straight into ready mode once I held it for 2-3 seconds.

FreydNot- yes the lights come on