2012 Toyota Tacoma Owners Manual - Page 669

3-4. 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