2010 Toyota Highlander Navigation Manual - Page 149

OTHER FUNCTIONS D Automatic volume settings for high speed You can set the volume one step up when the speed is over 80 km/h. (When it is under 70 km/h, previous volume is back.) Each time you touch "Adaptive Volume Control", you can switch on or off. D Initializing the settings You can initialize the settings. Touch "Default". Touch "Yes". 150