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.
Inspection Procedure
- CHECK NAVIGATION SETTINGS
- Enter the "Menu" screen by pressing the "MENU" switch.
- Select "Set up".
- Check that "Voice Recognition Guidance" is not OFF.
OK: Voice Recognition Guidance is not OFF.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: TURN VOICE RECOGNITION GUIDANCE "ON"
OK: Go to Next Step
- CHECK MAP DISC
- Check that the map disc is not deformed or cracked.
OK: No deformations or cracks on map disc.
NG: REPLACE MAP DISC
OK: Go to Next Step
- Check that the map disc is not deformed or cracked.
- CHECK MAP DISC
- Check for dirt on the map disc surface.
OK: No dirt is on the map disc surface.
NOTE: Do not use a conventional record cleaner or antistatic preservative.HINT:
If the disc is dirty, clean the disc by wiping the disc surface radially with a soft cloth.
NG: CLEAN MAP DISC
OK: Go to Next Step
- Check for dirt on the map disc surface.
- CHECK MICROPHONE (NAVIGATION CHECK MODE)
- Enter the "MICROPHONE & VOICE RECOGNITION CHECK" mode (See NAVIGATION CHECK MODE ).
- When voice is input into the microphone, check that the microphone input level meter changes according to the input voice.
- Push the recording switch and perform voice recording.
HINT:
Voice can be recorded up to 5 seconds.
- Check that the recording indicator remains on while recording and that the recorded voice is played normally without noise or distortion.
OK: All check results are normal.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: REPLACE NAVIGATION ECU
NG: Go to Next Step
- CHECK MICROPHONE (DISPLAY CHECK MODE)
- Enter the "MICROPHONE & VOICE RECOGNITION CHECK" mode (See DISPLAY CHECK MODE ).
- When voice is input into the microphone, check that the microphone input level meter changes according to the input voice.
- Push the recording switch and perform voice recording.
HINT:
Voice can be recorded up to 5 seconds.
- Check that the recorded voice is played normally without noise or distortion.
OK: All check results are normal.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK: END
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.