2013 Toyota Highlander Owners Manual - Page 712

3-4. Using the hands-free phone system (for cellular phone) Setting voice guidance volume STEP 1 STEP 2 Select "Guidance Volume" using Change the voice guidance volume. To decrease the volume: Turn . counterclockwise. To increase the volume: Turn Initialization clockwise. 3 Interior features STEP 1 Select "Reset Settings" and then "Confirm" using . STEP 2 Select "Confirm" using . 397