2009 Toyota 4Runner Navigation Manual - Page 177
2009 Toyota 4Runner Manual
Page 177 highlights
08 06.27 OTHER FUNCTIONS (c) Setting the volume D Automatic volume settings for high speed You can set the volume one step up when the speed is over 50 mph (80 km/h). (When it is under 43 mph (70 km/h), previous volume is back.) Each time you touch "Adaptive Volume Control", you can switch on or off. 5U5085F 1. Touch "Volume" to display the "Volume Settings" screen. 5U5086F 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. 131