TOYOTA 2011 Tundra - Manual (Page 458)

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3-5. Using the hands-free phone system (for cellular phone)
Changing the passkey
Select “Set Passkey” by using a voice command or .
Press the talk switch, say a 4 to 8-digit number, and select
“Confirm” by using a voice command or .
The number should be input 1 digit at a time.
When the entire number to be registered as a passkey has
been input, press again.
Turning the hands-free phone automatic connection on/off
n Turning off the automatic connection
Select “Handsfree Power” by using a voice command or
.
Select “Turn off” by using a voice command or .
n Turning on the automatic connection
Select “Handsfree Power” by using a voice command or
.
Select “Turn on” by using a voice command or .
n The number of cellular phones that can be registered
Up to 6 cellular phones can be registered in the system.