Where is the 12 volt auxiliary battery located in a Toyota Prius?
The battery is located under a plastic molding on the far right, in the rear of the trunk.
What does the 12v battery in a Prius do?
In a Toyota Hybrid the 12 volt battery keeps all the electrical system running while your car is parked. This includes the security system, the key fob sensors, the clock, and the memory in many of the computer systems. This is a fairly small drain but it adds up 24 hours a day 7 days a week.
Does the Prius have two batteries?
Most hybrid vehicles, like the Toyota Prius, have two batteries. A smaller 12 Volt auxiliary battery, and the much larger high voltage Hybrid System Battery. The purpose of the 12V, is to power the computer and accessories when the hybrid system is not in Ready Mode, and to assist in starting the vehicle.
Do you need to replace the 12V battery in a Prius?
If you haven’t already, check the health of your 12v battery. As I said there, unless your car doesn’t start at all it’s tough to know if you need a new 12v battery in a Prius. After testing my 12v battery and finding it to be weak I decided to replace it because I don’t want to be stranded somewhere.
Why does my Toyota Prius Charger refuse to charge?
Also if the battery is quite dead, the charger may refuse to provide power to the battery for safety reasons (not knowing if it is connected to a battery or not). In that case it would be necessary to use jumper cables (observing correct battery polarity of course) or else install a new 12V battery.
Why are AGM batteries used in Toyota Prius?
AGM or Absorbed Glass Mat batteries are built very differently than a typical lead-acid battery. With AGM batteries, there is no “free” liquid electrolyte. The “mats” inside the cell hold all the electrolytes. This action makes the battery non-spillable and much safer.
Can you jump start a Toyota Prius battery?
Yes, it can be jump started but I’ve done that before with other cars and would rather preemptively replace this. And just to be clear, this is the small battery in the Prius, NOT the traction battery used to power the electric motor! If you read some of the reviews on Amazon you’ll see that the stock battery isn’t great.