2011 Prius 4 suddenly wont start

you need a new 12 volt battery. the short trips do not allow it to charge properly, causing premature death, although some people would say 7 years was a good run, and i can't disagree.

if you diy, there are many options. if not, you'll need a jump to get it to the dealer or an auto parts store that carries the correct model.

 

What part of the us of a are you located?

If you go to a dealer, expect to pay north of $200 for the battery.

If you go to Autozone or the like and have a coupon (or a special), you might get away with $180 or less.

The battery is not hard to replace, but the autozone types might do it for free.

Good luck and keep us posted .

 

prices are all over the place. best to call around to as many dealers as you are willing to drive to and auto parts stores as well.
do you have aaa? they might do it in your driveway, not sure.

all good batteries, just depends on price and warranty.

 

don't get stranded somewhere evil

 

If you haven’t had the battery changed in more than 5-6 years, you better change it because it won’t hold the charges after certain amount of time. Battery is a common part that needs to be replaced after a while.

 

A jump start and a drive is not going to do much for a sevenish battery. Can you manage a voltage reading when the cars off, sat overnight? Say with a digital multimeter?

But hardly worth the bother: cheapest route would probably be the Bosch battery through Pep Boys. It's periodically on sale for under $150, and I believe they'll install for free?

 

I found this old topic, so I react here.
My prius does not start either. Checked the battery, 12.3V, tried to jump start with two different car, removed the battery then back, still no luck. The door olny opens with key button, not keyless mode.
All lights work fine.
Checked with TS, no error code. Any advise what else to check?

 

I believe 12.3 is low. Do you have a charger? I would put a charge on it if you can.
Sometimes is the battery is bad, it will read the voltage, but won't have the amperage to start the car.
And the old battery can draw a lot of amperage from the jumper battery and keep it from starting

When you open the drivers door, how long do you hear the brakes pressurizing? I think mine is about 5-10 seconds?
How old is the battery?

Open the hood. Hook up your meter. Close the door. Let the car sit for 10-15 minutes.
Check the battery voltage on the jumper points in the fuse box. Set the meter so you can see it from inside the car.
Climb in the passenger front door.
Use a stick, or climb in the drivers seat, get video of it Hold the brake and press the start button.
What is the voltage?

 

12.3 is less than ideal but won't stop the car from starting or the electric locks from working. Not starting with a jump is a dead give away that it's not the battery unless you're jumping with a dead one. Check your battery cable connections. Especially the notorious ground connection to the body. That's loose or corroded or maybe the clamps at the battery terminals are loose.

One more thing. You might have a weak battery in your fob. Not sure why it would open with the fob button and not the keyless entry. To test it, try starting the car as if the fob had a dead battery. Here's how my 2013 PiP manual described it.

 

Heh, I'll do it if not else for the fun of it!
The break pressurizer sounded me too long compared to my previous prius. I was actually thinking why it does not finish a bit quicker.

If we used two cars to hook up, that should have sort of overwrote my suppose to be bad battery, wouldn't it?

 

I don't know how old.. Could be still the factory one, 8 years old. Cannot see a date on it. I used to have a dead battery, that produced different anomalies, like fading light, no entry with key..

 

I have just replaced the fob battery a month ago :-/

 

You don't know how old the battery is? Usually the date code is engraved in the plastic.
I am not sure if the is a date code or not. MAYBE 22 November 2011???? Which is 8 years.

 

I've seen brand new batteries fail, so don't assume the fob battery is OK. But it is sounding more like a loose or dirty connection.

 

Your battery is not "dead", just low.

Even if it is not THE main problem, it IS a problem and needs to be charged or replaced.
And what "anomalies" are produced depends on how low it is......and what model car it is.

FIX the battery problem first and then see what happens next.

 

I’ll say ground chassis.

 

This morning it started fine.
If it was a battery issue, the two independent jump start would have worked.
Maybe it was the fob or someone/something blocked the signal.

I'll replace both batteries and will check grounding, though not sure how and where