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.
2012 Toyota Prius Plug-inFACTORY OEM SERVICE PROCEDURE
Charging System: Precaution: Precaution
WARNING:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After removing the service plug grip, wait for the specified time before touching the high voltage connectors or terminals. Then, check that the voltage is zero at the voltage inspection point on the inverter with converter assembly.
HINT:
- This is the time required to discharge the high voltage capacitor in the inverter with converter assembly.
- The waiting time required varies according to the model.
NOTE:
- If the auxiliary battery is fully depleted or "READY" does not light up, recharge the auxiliary battery.
- Never disconnect the auxiliary battery while the power switch is on (READY).
- Disconnect the auxiliary battery cables when the auxiliary battery is given a quick charge.
- Check the auxiliary battery again before the vehicle is returned to the customer.
- If the auxiliary battery has been removed, clean the vent hoses and check that they are not clogged.
- After installing the vent hoses, check that the noses are not kinked.
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.
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