Prius 2013 goes into ready mode but engine won't start. key fob is still working

NewHybridOwner · Jul 9, 2019

Rebound said: ↑

The Optima Yellow S46B24R is a good choice. I’d just see what they have at your local auto parts store. Most auto parts stores will help you install it right in the parking lot, as long as they aren’t too busy.

Because the battery is inside the car, there is a tube used to vent hydrogen gas outside. Be sure that tube is connected when the new battery is installed. Hydrogen gas is flammable (remember the Hindenburg?), and venting the gas prevents the possibility of the hydrogen igniting in your car (which isn’t very likely, but...)

The Prius 12V battery is somewhat unique: It’s not used for turning the starter motor, and it’s charged from the Big Battery. All it does is “boot up” the electrical system. That’s why these batteries are so small and long-lasting. The only problem, really, is that with traditional car batteries, you can tell when they’re dead because you either get no electricity at all, or the engine turns slowly but doesn’t start. The Prius doesn’t give you any clue that it’s the battery. Don’t bother with an extended warranty or anything silly.
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Others here have argued that Optima batteries are overpriced garbage, but I have never used one myself -- because of the price.

OptimusPriustus · Sep 23, 2021

NewHybridOwner said: ↑

Others here have argued that Optima batteries are overpriced garbage, but I have never used one myself -- because of the price.
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I tend to agree. Similar stuff like some K&N filters. It’s funny how one sometimes see through the clumsy marketing propaganda

Prius 2013 goes into ready mode but engine won't start. key fob is still working

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Prius 2013 goes into ready mode but engine won't start. key fob is still working

NewHybridOwner Active Member

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