Toyota 2012 Avalon Owner's Manual page 314

3-4. Using the hands-free system (for cellular phone)
Locking or unlocking the phone book
STEP 1
Select "Phonebook Lock" or "Phonebook Unlock" by using a
voice command or
STEP 2
Input the PIN by either of the following methods and select
"Confirm" by using a voice command or
a. Press the talk switch and say the registered PIN.
b. Input a new PIN by using
Setting voice guidance volume
STEP 1
Select "Guidance Volume" by using
STEP 2
Change the voice guidance volume.
To decrease the volume: Turn
To increase the volume: Turn
334
.
I n f o r ma t i o n P r o v i d e d b y :
:
.
.
counterclockwise.
clockwise.