changing the aux battery?

Yes, it'll cost you around $200 and 20 minutes of your time

 

I changed my battery and now the car wont start. now my dash lights up like a Christmas tree. I get the trouble with P and to park on level surface light
along with the red car with stake thru it. my check engine and the red trianglelight, vsc/abs light, Brake warning light, Is there something that needs to be reset?
Eddie Hinman

 

Try this.

1. Try to get the Prius into it's state of being completely powered down while the 12 volt battery is connected. Use the power button to do this. It should shut down by pressing the button. If you have difficulty press and hold it until the dash goes dark.
2. Charge the 12 volt battery with a smart charger until it is fully charged. You can charge the battery by connecting a charger to the jump point under the hood. Set the charger on a four amp maximum charging rate and the AGM setting. If you don't have a charger with those settings, it is advisable to obtain one before you attempt charging the battery.
3. Once the battery is fully charged, disconnect the negative for at least two minutes, then reconnect. Try to make sure all loads are off when you reconnect.
4. After all of that firmly press on the brake pedal, and push the power button. If it does not become ready, then power down completely. Then once again firmly press on the brake pedal and push the power button. The Prius then should become ready.

If you still have problems after that, consult a Toyota dealer or a good mechanic that has a Prius aware scanner.

The situation you are describing is generally caused by a weak or failing 12 volt battery. Just because the battery is new does not mean it is fully charged. The Prius can be finicky at times due to a weak 12 volt battery.

Cannot start vehicle, 'p' lock malfunction | PriusChat

Best of luck to you.

 

make rue the cables are clean and tight at both ends.

 

welcome! yes, we know quite a bit. the 12v is located in the right rear fender under the hatch floor. there are a couple components to be removed from the top, and then the cables. pull the battery out, clean the area and replace with an oem from toyota, or matching aftermarket optima, duracell, exide, etc. anything else in particular?

 

Take a look at this post. I wrote this up a while back when I changed out the 12 volt in our previous Gen II Prius. Best of luck to you!

How do you replace the 12v battery? | PriusChat

 

Finally found my problem. after all the testing Toyota using a flashlight and mirror found a rat nest under the inverter. That happened to be right on the wiring harness and there are some chewed wires. so just some replaced wires and wont have replace computer.

Thanks for replies hope all have or had a great day.

 

Thanks for replies. Turns out there was a rat nest under the inverter. Some chewed wires but no expensive parts to replace.

Guess that what happens when you park out side next to the wetlands.

Thanks for replies.

 

glad it wasn't an expensive repair! put some bait traps out, away from the car.