Toyota Highlander 2011 Manual page 240

3-1. Using the air conditioning system and defogger
Front side outlets
Using the system in recirculated air mode
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The windows will fog up more easily if the recirculated air mode is used for
an extended period.
Window defogger feature
■
Vehicles without smart key system
In order to prevent the windows from fogging up, recirculated air mode may
automatically switch to outside air mode if the ambient temperature drops.
This feature can be canceled by pushing and holding the air intake mode
switch for longer than 2 seconds. The feature will be reactivated when the
engine switch is turned to the "ACC" or "LOCK" position.
Vehicles with smart key system
In order to prevent the windows from fogging up, recirculated air mode may
automatically switch to outside air mode if the ambient temperature drops.
This feature can be canceled by pushing and holding the air intake mode
switch for longer than 2 seconds. The feature will be reactivated when the
"POWER" switch is turned to ACCESSORY mode or OFF.
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Direct air flow to the left or
right, up or down.
Turn the knob to open or close
the vent.