Toyota 2012 Avalon Owner's Manual page 292

3-4. Using the hands-free system (for cellular phone)
■
Steering wheel
■
Microphone
312
Volume
The voice guidance volume
cannot be adjusted by using
this button.
On-hook switch
Turns the hands-free system
off/ends a call/refuses a call
Off-hook switch
Turns the hands-free system
on/starts a call
Talk switch
Turns the voice command sys-
tem on (press)/turns the voice
command system off (press
and hold)
I n f o r ma t i o n P r o v i d e d b y :