Toyota 2005 Sienna Owner's Manual page 268

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.
260
05 SIENNA_U (L/O 0409)
—Front audio system
operation
All the modes of the front audio system
can be operated on the rear seat enter-
tainment system.
When the same mode is selected on the
front and rear audio systems simulta-
neously, the system can be operated on
the front audio system.
If the radio mode is selected on the front
and rear audio systems at the same time,
AM and FM modes cannot be changed on
the rear seat audio system.
Controller
DVD player unit
2005 SIENNA from Sep. '04 Prod. (OM45431U)