Prius won't start even when jumped

Hey guys, just wanted to say sorry for posting here as I was unable to find the GEN I forums.. I'm hoping someone here would have some knowledge on my situation.

I have a 2001 Prius that has been sitting outside for two months as I've been away on business. When I tried starting it yesterday it was dead as expected so I got my other car and hooked up the jumper cables to the 12V battery located in the truck of the Prius. After 15 minutes of charging I tried starting it up and it didn't even try to turn. I gave it even more time and still nothing.

What is really throwing me off is that none of the electrical components turn on or work (door locks, windows, etc) except for the daylight running lights and turn signals (both are stuck on). Computer screen doesn't light up, dash doesn't light up, everything seems dead.

Does this mean the 12V battery is dead or that I have a bigger issue? I was expecting the jump to at least get the car started... Thanks!

 

Can any 12V battery work or do I have to use one specifically for the Prius? What mainly threw me off was even with the jumper cable connected to the other car I was unable to use any of the electronic components.

 

Good to know. I will work on this tonight and see what happens. Hopefully it's just the battery...

 

So turns out the 100A fuse was blown and I got a new one but it was way too tough to remove the fusebox so I decided to get it towed to the closest dealership. They replaced the 100Amp fuse and said that I most likely reversed the polarity while jumping the car. I know for a fact that I didn't do that as I researched on jumping the Prius prior to the jump and read a lot of horror stories if you reversed the polarity. Long story short the car still won't start even with the replaced fuse, they are now saying I need to replace the 12V battery as it no longer holds a charge.

I thought the 12V battery isn't responsible for cranking the car? So what does replacing the 12V battery fix? Also can't I try trickle charging the battery before paying $200+ to replace it?

 

Thanks for that info Rokeyby. Right now they have charged me $410 to change the 100Amp fuse and after calling around the other dealership I found that I have been taken advantage of. First dealership said it would cost $20 for the labor, the other one said they would do it for free. /sigh... so stressed... at least the battery charge of $200 is reasonable but I'm probably going to ask for my original battery back so I can try trickle charging it first.