2005 Prius - won't start. Due to cool weather conditions?

Empty 12V battery? Check the 12V battery voltage. If 12V battery is empty you need to charge or replace it. You can also just jump start it. But you need to keep the Prius in ready for at least 4 hours to charge the 12V battery.

You can jump start the Prius from under the hood jump point. Keep the other vehicle turned OFF when jumping Prius and make sure that you connect the cables correctly.

 

Yeah, this sounds like a classic dead 12v issue. Did you somehow accidentally leave the power on or a door ajar or dome light on overnight?

You don’t necessarily need a vehicle to jump start if have a battery charger. You can simply connect the charger to the jump start points and let it do its thing for an hour. After that you should be able to power up the car and let the inverter do the rest.

Also how recent is recent? Yesterday or a month ago? Have you been driving the car without issue since replacement up to this point?

iPhone X ?

 

Sounds like a dead 12v.
BTW: If you paid $5000 for just an HV battery, you got ripped off. That should have been around $3500.

 

I only got $3,000 trade in on my 2008 Prius and there wasn't anything wrong with it. Sounds like you should have bought another car. JMHO

 

Dealer trade-in's are always bad deals. I would have given you more for your car, just sayin'...

 

could be a bad multi info display. gas gauge/speedo/etc. try holding the start button for 4 or 5 seconds.

 

thought you were going to check the voltage?

 

You have a failed combination meter (CM). You also have the model of Gen 2 where the combination meter will stop at 299,999 mi.

See the link in my signature entitled "Combination Meters that stop at 299,999 miles, who's affected and what you can do about it."

If you choose to let the dealer do the job it will cost you $800 - $1000. If you elect to go the DIY route, it will cost you ~$150. If you can't DIY, get a replacement unit from Matt @Texas Hybrid Batteries and find a local garage to swap it for you. Talk to Matt about your options.

 

Yes, another symptom that confirms your CM is bad.

 

Sadly, it is a common problem, but not too difficult to DIY.

Further to my previous post, if you let the dealer fix the CM, you will get a new CM that still stops at 299,999 mi.

 

You probably don't drive it enough to put a good change on it. That and you not locking the door with the FOB every time you get out especially in the garage. It will alert you to door ajar. Its a very small battery and will not tolerate the insults you can throw at a big battery like letting it go dead repeatedly. Usually a couple of good deads on the little AGM and its done it will never hold a proper charge again.

Become involved. Get a volt meter. See what the battery voltage is like in different situations like whats it look like in the am before I start the car. Or put the headlights on without starting the car and see what the standing charge it has...its ability to produce proper voltage under load. Thats the one that doesn't lie and its a free test.

I've never had a 12 volt battery in my car strand me because I know its a big liability and it will not let it get me. Only takes a few minutes to check it.