2008 Toyota Sequoia Owners Manual - Page 366
2008 Toyota Sequoia Manual
Page 366 highlights
3-4. Using the hands-free phone system (for cellular phone) n Steering wheel telephone switches Type A Volume The voice guidance volume cannot be adjusted by using this switch. Hands-free phone system off/ends a call/refuses a call Hands-free phone system on/starts a call Press: Voice command system on Press and hold: Voice command system off 334