12v Battery Replacement not working HELP!!!!!

You should check the voltage of the "new" battery. If it's under 12v, you would have issues with it. A fully charged battery is usually 12.9v or higher.

Another possibility is if you keep jump starting the car, if you're not careful and reverse the polarity of the connections, that would blow a few fuses and the car won't start

 

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Did you check all of your connections, battery posts and ground strap to the body.

No corrosion?

Measure the voltage at the 12v battery, then again at the jump points under the hood (driver side).

 

Recheck you battery connections and the ground cable where it attaches to the body then take the battery back to the dealer and have it checked. If you don't have a meter to read voltage buy one and learn how to use it, it will pay for itself the first time.

 

Search the forums --- if you are VERY lucky, fuses are the only thing damaged.....hope you are lucky.

Personally, I never am lucky and would never try to jump the Prius.

 

You must be getting tired of crawling in the back seat to open the back hatch.

If your jumping the car in the trunk it almost always ends badly and that's why Toyota put a convenient and safe jump point under the front hood. Its in the black plastic fuse box on the right in the engine bay. Inside that black plastic fuse box there's a red plastic cover that covers the 12 volt positive terminal. You hook the red jumper cable lead to that little vertical tang under the red plastic cover. The you hook the black jumper cable to any bolt head/chassis. I use the bolt head right above the black plastic box.

You blew some fuses or you blew up the inverter. A quite common scenario on this site.

Check all the fuses in the black plastic box in the engine bay and there's a fuse panel by your left knee under the dash when your sitting behind the wheel.

Pull all the fuses out one by one and check with an ohmmeter to see if there blown open.

 

If the reason you didn’t get a new battery is money, then my suggestion is you get the bus schedule. A new inverter would add 4000 dollars to the bill. That’s on top of the 160 dollar Battery you already need.

 

Plenty of used ones on the market. No reason to pay 4000 for a inverter.
But hooking up jumper cables in the dark.

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