2010 Toyota Highlander Navigation Manual - Page 148
2010 Toyota Highlander Manual
Page 148 highlights
OTHER FUNCTIONS D Deleting all the speed tone (iii) Setting the volume 1. Touch "Delete All" of "Speed Tone". 1. Touch "Volume" to display the "Volume Settings" screen. 2. Touch "Yes". 2. Touch "−" or "+" to adjust the "Voice Volume" or "Ring Volume". "Voice Volume" ...Adjusting the other party's voice. "Ring Volume" ...Adjusting the ring volume. 149