Prius with 170k miles hasn't been driven in nearly 2 years

Just for giggles try jump starting it?

my guess is the hybrid battery will be a problem, sitting so long. But worth a try.

how do the brake rotors look?

 

If you take it to a dealer, the price they give you will be the same as buy a new Prius.
Independent shop, if they are honest, will be about 20% of that. Depending on what you
really NEED to have done.

How full is the tank? It likely has condensation in it. So draining, or sucking out whats in it
is probably a good idea. The get a 5 gallon can and get new fuel and pour it in.
But also put in two bottles of the STP gas treatment to help spread out any water left in the tank.

Get a new Toyota 12v battery, charge it at 4-5 amps for 4-8 hours. Then install it.
Then try starting the car. HOPEFULLY, it will run. The hybrid battery is likely low afte 2 years.
But, you MAY get lucky and it has enough power to start the engine.
It will probably run bad at first because of the old fuel in the lines. You could try jumping the
fuel pump and allow it to run for a minute or two the clear out the lines so the injectors get clean fuel.

Worst case, you'll need to get a charger for the battery. Either the Prolong charger, or something similar,
or a 7.2 RC battery charger, or a few, and charge each module for a few hours each to give them a charge.
I wouldn't worry too much about balancing them yet, you just want to get them charged up enought to start
the motor and let it charge the pack up to a useful voltage. Always let the engine run until it stops on it's own.

The injectors may be clogged or sticky but the clean fuel might clean them out some..
That would be a starting point. Brakes and such you can do yourself, if you're handy.

But it's a starting point

 

I'm with Mendel, it will probably start if you jump start it.

 

Don't move it anywhere leave it in the gravel lot in Pittsburgh Go to the vehicle and test the battery with the voltage tester and see if it has anywhere near 12 volts 9 10 somewhere in there If so you could try charging the battery I usually just bring a battery with me because well that's what I do drop another battery in then let's get the car to boot up and put the lights on and try to read the codes and see what we got brake work what kind of break work If you had all the orange lights on before you shut the car off that's involving an $1,100 part plus or minus a few hundred and about 500 to have it installed that's very common on this model car 22 months of hybrid battery sitting is certainly not a good thing You need to probably lift the trunk and open up the well where the 12 volt is looking there with the flashlight and see if you see any water on the floor of the well where the 12 volt sitting there's some rubber plugs that need to be pushed out so that doesn't continue to happen in Pittsburgh this would be very common in that water freezes ruining the battery so take a look usually you'll see a lot of rust or water still standing in that area because nobody's pushed the rubber plugs out same in the spare tire well look for the rust and water drying to white powder looking areas But before you do anything with dealers and all of this kind of stuff let's get the car booted up see if it will ready read the necessary codes so that might involve getting a scanner that's capable are you willing to chip in 58 bucks to have a reliable scanner that will work on all your Prius moving forward or is this just an exercise to get the car on the road to sell it? Pittsburgh is a rust area so how are the rocker panels quarter panels and all that looking?.

 

Are you willing to put $3k in it to make it a runner?

The hybrid battery was replaced a few years ago with a new oem battery or some rebuilt unit? Much more common it was rebuilt. Either way it is likely dead now.

Unknown electrical problem after a front end wreck? Big red flag.

And then there are the things you don’t know about and can’t ask questions. “there are also unknown unknowns—the ones we don't know we don't know.”

 

i'm surprised at how often old prius sitting have started right up wit a good 12v or jump.
i wouldn't know where to begin with a project like that, good luck finding an indy prius shoppe!