2011 Toyota Avalon Owners Manual - Page 324
2011 Toyota Avalon Manual
Page 324 highlights
3-4. Using the hands-free system (for cellular phone) n Steering wheel Volume The voice guidance volume cannot be adjusted by using this button. On-hook switch Turns the hands-free system off/ends a call/refuses a call Off-hook switch Turns the hands-free system on/starts a call Talk switch Turns the voice command system on (press)/turns the voice command system off (press and hold) n Microphone 300 AVALON_U (OM41428U)