Toyota 2014 Sienna Manual page 508

3-4. Using the rear audio system
Setting the rear seat entertainment system lock
Vehicles with a navigation system
Owners of models equipped with a navigation system should refer
to the "NAVIGATION SYSTEM OWNER'S MANUAL".
Vehicles without a navigation system
Front audio system
DVD player display
508
SIENNA_OM_OM45483U_(U)
Selecting either the front audio
system or DVD player audio
for the speakers
Selecting "LOCK"
"UNLOCK" for the rear seat
entertainment system
The rear seat entertainment
system lock remains on,
even when the
switch is turned off.
or
engine