Hybrid battery state of charge falls suddenly from full to two bars?

2012 TOYOTA PRIUS C

150,000 MILES • 1.5L • 4 CYL • 2WD • AUTOMATIC

JOSEPH MUNYANGA

MEMBER
7 POSTS
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I have a 2012 Toyota Aqua, when it gets into EV after few meters of driving the SOC (State of Charge) falls suddenly to two bars and the engine revs very high. When it takes distance almost 1 km to add bars but it never goes back to Ev until i shut off and restart again. Please help.

Mar 1, 2023 at 1:08 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.

JACOBANDNICKOLAS

CAR REPAIR CONTRIBUTOR
110,190 POSTS

Hi,

First, working on an EV can be dangerous if you are unfamiliar with the procedures, so please be careful.

Also, if you haven't had the can-bus scanned, I would recommend it. There could be diagnostic trouble codes stored that are helpful.

Here is a link that explains how it is done:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

As far as the issue, I attached diagnostics below which are general for the circuit. Take a look through them and let me know if you are comfortable performing them.

Let me know.

Joe

See pics below.

Images (Click to enlarge)

Mar 2, 2023 at 7:07 PM