2006 Toyota Sienna Owners Manual - Page 498
2006 Toyota Sienna Manual
Page 498 highlights
06 SIENNA_U (L/O 0603) -Front audio system operation The rear DVD player can be operated through the front audio system. To turn off the system, push the "OFF" button. When the front audio system is turned off, the rear audio system and the DVD player will be turned off simultaneously. Vehicles with navigation system-The rear seat entertainment system can be switched ON and OFF by pushing the "Rear" switch on the front audio system. 266 2006 SIENNA from March '06 Prod. (OM45443U)