2010 Toyota Prius Owners Manual - Page 376

3-3. Using the hands-free system (for cellular phone) Locking or unlocking the phone book STEP 1 Select "Phonebook Lock (Phbk Lock)" or "Phonebook Unlock (Phbk 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 and say the registered PIN. . : b. Input a new PIN by using Setting voice guidance volume STEP 1 Select "Guidance Vol" by using Change the voice guidance volume. To decrease the volume: Turn . STEP 2 counterclockwise. To increase the volume: Turn clockwise. 352