Toyota RAV4 2010 Quick Reference Manual page 299

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Automatic adjustment of volume
When vehicle speed is 50 mph (80 km/h) or more, the volume automatically
increases. The volume returns to the previous volume setting when vehicle
speed drops to 43 mph (70 km/h) or less.
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When using a voice command
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For numbers, say a combination of single digits from zero to nine, #
(pound), ∗ (star), and + (plus).
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Say a command correctly and clearly.
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The system may not recognize your voice in the following situations:
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When driving on a rough road
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When driving at high speeds
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When air is blowing out of the vents onto the microphone
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When the air conditioning fan emits a loud noise
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The following cannot be performed while driving:
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Operating the system with
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Registering a cellular phone to the system
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Changing the passkey
→P. 287
3-3. Using the hands-free phone system (for cellular phone)
I n f o r ma t i o n P r o v i d e d b y :
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