Traction battery issue???

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Ian S., Jan 20, 2025 at 4:34 PM.

  1. Ian S.

    Ian S. New Member

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    Please help!!! I have a 2021 prius prime with high mileage. This morning the car wouldn't shift and said the 12v battery was low. Turned off then back on with a normal startup. The traction battery showed 60%charge, but I didnt plug in and had a 0% charge when I parked last night. Been driving fine today and started with no issue after about 2 hours off this afternoon. I've noticed that the traction battery indicator jumps from 0 to 1 or 2% off and on even when I'm not braking. Any thoughts????
     
  2. Tideland Prius

    Tideland Prius Moderator of the North
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    I’m leaning toward 12V battery issue. It’s normal for the HV battery to fluctuate slightly, especially if it’s cold and the engine is running.
     
    bisco likes this.
  3. ForestBeekeeper

    ForestBeekeeper Active Member

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    I find it interesting how so many people want to say the traction battery is at fault when ever they sneeze.
     
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  4. bisco

    bisco cookie crumbler

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    have the 12 volt load tested
     
  5. Ian S.

    Ian S. New Member

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    Thank you all! Everything seemed fine for the rest of the day. It has been in the low 20's at night, but I've never experienced this issue before. I'll have the 12V checked.
     
    bisco likes this.