Toyota 2006 Sienna Owner's Manual page 294

Each time you push the "Audio" switch,
another language stored on the disc is
selected.
To turn off the audio language screen,
push the "Hide Buttons" switch.
Push the "Back" switch to return to the
previous screen.
The selected audio language will appear
on the screen.
06 SIENNA_U (L/O 0603)
CHANGING ANGLE SCREEN
Push the "Angle" switch on the screen,
and then the changing angle screen will
appear. You can also display the screen
by pushing the "ANGLE" button on the
controller.
2006 SIENNA from March '06 Prod. (OM45443U)
279