Prius won't start after jumpstarting other car

Jump start the prius

 

from the civic.

 

I never recommend jump starting other vehicles from a Prius, I use a Jump Start Pack like amazon.com/gp/product/B0747MVLKP

However, when READY even when the engine is not running, the inverter is fully charging the 12 volt battery. Your engine does charge the High voltage battery, which feed the inverter, which charges the 12 volt battery; so eventually the engine starts to recharge the big battery.

 

What's it reading?

 

Don't forget the 12V fusible link, hidden somewhere in the battery compartment.

Check also at the battery jump points in the engine compartment, on the other side of that fusible link.

 

Undo 12v. Charge it. Reconnect. Unless you hooked up the cables backwards it's not broken. Just confused.

 

I've never had to look for it, but hear that it is near the under-hood jump contacts. So, among other things, measure the 12V at front and back to see if they are the same.

And make those measurements at close to the same time. After an hour or so, the battery should have fallen below 13V. It should be 13+ only while being charged (e.g. by the inverter while the car is on), and just a short while after shutoff.

 

^ Did you do this?

Where did you hook up, at the battery, or at the jumpstart point?

 

I have not, having had no reason to believe that my car has blown that link. This suggestion was based on symptoms and results from folks have have blown it.

 

I think Mendel was directing his question to the OP.

He just quoted your suggestion to the OP.

Posted via the PriusChat mobile app.

 

I would check the fuses in both fuse boxes, try disconnecting the ground on the prius wait a few mins then reconnect.. might reset the computers..you might have drained the 12 volt in the prius...try charging it.

 

Yeah meant for OP, sorry for confusion.

 

Sounds like you need a new battery. If the fusible link is burnt, there would be no electricity current through the entire vehicle.

 

Dead 12v is my guess. You killed it.

 

Yeah the Prius 12v. battery is similar to a motorcycle battery. When you start the Prius the 12v. battery only powers up the computers it doesn't crank the gas engine. You should never use the Prius to jump start another car for a variety of reasons.

 

2014 is a little young to be needing a new 12V battery, but it's possible. Note the complex positive battery post on the Prius battery. Which side of that post did you connect to, the battery terminal or the other side? That device may include the fusible link.

At any rate, do check that you see 12V or a little more at the boost terminal under the hood. Open the fuse box on the drivers side by pressing on the plastic lock on the front of it - press on the dashes and lift the front. It will hinge open. Remove the lid. Inside you will see a red plastic "bar" that you can pivot open. It covers the boost terminal. Note that only one side of this flat is conductive. You should see the battery 12V there all the time. If you don't the fusible link is blown.

Bottom line, the car won't work unless there is 12V at the boost terminal. That is where the car gets its' power from.

If you do have 12V there and the car still won't go into "ready" you may have "spiked" the Prius electronics when the Civic started. See a dealer for the bad news.