TOYOTA 2010 Camry HV - Manual (Page 252)

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3-3. Using the hands-free phone system (for cellular phone)
■ When using a voice command
For numbers, say a combination of single digits from zero to nine.
Say the command correctly and clearly.
■ Situations that the system may not recognize your voice
● When driving on rough roads
● When driving at high speeds
● When air is blowing out of the vents onto the microphone
● When the air conditioning fan emits a loud noise
■ Operations that cannot be performed while driving
● Operating the system with
● Registering a portable player to the system
■ Changing the passkey
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