TOYOTA 2011 Avalon - Manual (Page 325)

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3-4. Using the hands-free system (for cellular phone)
3
Interior features
AVALON_U (OM41428U)
Operating the system by using a voice command
By following voice guidance instructions output from the speaker,
voice commands can be given to allow for operation of the hands-
free system without checking the display or operating .
n Operation procedure when using a voice command
Press the talk switch and follow voice guidance instructions.
n Auxiliary commands when using a voice command
The following auxiliary commands can be used:
Cancel: Exits the hands-free system
Repeat: Repeats the previous voice guidance instruction
Go back: Returns to the previous procedure
Help: Reads aloud the function summary if a help comment is
registered for the selected function