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