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.
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HOMESERVICE MANUALSTOYOTA2012PRIUS THREEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMSAUDIO / VIDEO SYSTEM (EXCEPT PLUG-IN) (W/O DAYTIME RUNNING LIGHT) (DIAGNOSTIC CODES & SYMPTOM TESTS)AUDIO AND VISUAL SYSTEM (W/O DAYTIME RUNNING LIGHT)SYMPTOM TESTSVOICE GUIDANCE DOES NOT FUNCTIONPROCEDURE
2012 Toyota Prius Three
Voice Guidance does not Function: Procedure
2012 Toyota Prius ThreeSECTION Procedure
- CHECK VOICE GUIDANCE SETTING
- Display the "Voice Settings" screen.
- Check that "Off" is not selected.
OK
"Off" is not selected.
TEXT IN ILLUSTRATION*a Example
NG → SELECT VOICE VOLUME SETTING OTHER THAN "Off"
OK: Go to next step
- CHECK AUDIO FUNCTION
- Check that sound can be heard from a front speaker.
OK
Sound can be heard.
NG → See step 4
OK → See step 3
- Check that sound can be heard from a front speaker.
- REPLACE NAVIGATION ECU SUB-ASSEMBLY. Refer to REMOVAL
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
RENDER: 1.0x
NO RELATED
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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.