Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2013 Toyota Prius ThreeFACTORY OEM SERVICE PROCEDURE
Check For Intermittent Problems
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR INTERMITTENT PROBLEMS
- Perform a simulation test. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
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- For the simulation test, reproduce the driving conditions that were present when the trouble occurred. These conditions should be based on the customer's comments and freeze frame data that is recorded with DTCs, such as the opening angle of the accelerator pedal, SOC (state of charge), engine coolant temperature, engine rpm, and MG1/MG2 rpm and torque.
- Check the connector(s) and terminal(s). Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
- Wiggle the harness and connector(s). Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
- Heat or cool suspected parts. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
- Perform a simulation test. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
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Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.