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 TwoFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
AIRBAG SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| The SRS warning light goes off after the primary check, but then comes on. | SRS Warning Light Remains ON | Refer to SRS Warning Light Remains ON |
| When the power switch is turned on (IG), the SRS warning light sometimes comes on after approximately 6 seconds. | SRS Warning Light Remains ON | Refer to SRS Warning Light Remains ON |
| The SRS warning light always comes on even when a DTC is not output. | SRS Warning Light Remains ON | Refer to SRS Warning Light Remains ON |
| When the power switch is turned on (IG), the SRS warning light does not come on. | SRS Warning Light does not Come ON | Refer to SRS Warning Light does not Come ON |
| Although the SRS warning light operates normally, a DTC or normal system code is not displayed. | TC and CG Terminal Circuit | Refer to TC and CG Terminal Circuit |
| Although terminals TC and CG of DLC3 are not connected, a DTC or normal system code is displayed. | TC and CG Terminal Circuit | Refer to TC and CG Terminal Circuit |
Factory Service Tools
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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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