2012 Toyota Tacoma Owners Manual - Page 673

3-4. Using the hands-free phone system (for cellular phone) Locking or unlocking the phone book Select "Phonebook lock" or "Phonebook unlock" by using a voice command or . 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 Select "Guidance Volume" by using Change the voice guidance volume. To decrease the volume: Turn . counterclockwise. To increase the volume: Turn clockwise. 352