07 prius will not start

Hi so I'm new and I have an issue.... a big issue.
My 07 prius won't start. So the story...

About 3 days ago I got a warning that said something like "caution the transmission p auto lock mechanism is abnormal. Park your car on a flat surface and engage the parking brake fully" I figured because I was having a fuse issue with the headlights that when I fixed those I threw the computer a little out of wack. So I did what you would do on any car. I disconnected the battery so it could restart itself.

Now the real issue. After I re-connected the battery back I went to go start my car. So I got in, put the key in its slot, put my foot on the brake and pushed the power button and..... nothing happened. And when I say nothing I mean nothing . No noise, no lights, absolutely nothing. So I tried again and again and again in every fation I could look up that had something to do with starting. I rechecked the connection on the battery, they are good. I check is the battery had power. It has 12.46 volts. The headlights still work, the hazards still work, the interior lights still work. But nothing happens when you push the button. The only light on the dash that works is the open door light. This in the only light on the dash. Non of the fuses are blown I check every single one in the car. Non of the wires are loose. There is no reason I know of for the car not to start.

So I'm stumped. I have fixed a lot of cars I'm my short life and nothing has ever been as hard as trying to start a prius. So what do I do, what do I check, where do I go. Because I have nothing left in my arsenal.

Thank you in advance for any help because right now any help is better then what I have.

-dan

 

So update. My fiance randomly comes outside and says some giberous she doesn't usually understand about cars and sticks a fuse in a spot call p con main. There was nothing in this fuse before so I never thought anything of it. Once she stuck the fuse in and I pushed the power button and all the lights on the dash came on, the car was beeping because of an open door everything worked as usual until the gas engine didn't turn on. Also the causion warning from before went away. P can main is a parently the parking control and transmisson. So that solves the warning message.

There's still a problem though the gas engine doesn't turn on.

153,000ish

 

From what I know the 12 v is original and yes we tested from both areas and got the same reading

 

Do you think then the batter is what is causing the gas engine to not start or is that another problem entirely?

 

We took out the orenge connector on the side of the big battery to make sure that fuse wasn't blown after we had already had these issues. The car now goes into ready mode but will not start the gas engine and will not drive under the electric power.

 

The orange plug is pushed down all the way. I disconnected the negative and still the gas engine is not starting.

Yes I am positive there is gas in the tank. Even if there wasn't should the engine at least try to start and then die?

She didn't do anything else. I don't think she would anyways because now i have to drive her car and she doesn't like me driving her car.
All of the warning lights appear that would normally appear during a normal startup The only light that is on that should not be is the giant red triangle with the "!" in it. which I believe is telling me there is something wrong. I would love to take photos for you but the car has been towed to the dealership to get the diagnostic done. They do it for free and I do not have the means of running all of the tests. There are two warnings on the MFD one is a yellow triangle with an "!" in it the other is the same red car symbol with the "!" in it that you get when you turn off the traction control off, except unlike the traction control it is a solid light. It is not flashing.

 

I will definitely let everyone know what the dealer says is going on.

What type of stupid design of a car doesn't let you start the car with less than 5 gallons of gas in it. If I want to start my car with one gallon I should be allowed to. Does the computer actually register how much gas is in the car and if there's a less than amount that it likes prevents the car from turning on? Because that sounds like it could pose a safety hazard just like the ABS shutting off all power to the wheel in which is spinning which I have experienced on multiple occasions.



The dealer is looking at the car at 1:15 p.m. Eastern time today I'm not sure when they will get back to me but it will most likely be in the afternoon or tomorrow I will be glad to let you all know when I find out.

Thank you for all the help you all have given me thus far. I'm glad there are people who actually know what they are they are talking about to help me.