Air outlets
Location of air outlets

The air outlets and air volume changes according to the selected air flow mode.
Adjusting the position of and opening and closing the air outlets
- Center outlets

- Right and left side outlets

- Turn the knob to open or close the vent.
- Direct air flow to the left or right, up or down.
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow immediately after the “AUTO” button is pressed.
When the outside temperature exceeds 75°F (24°C) and the air conditioning system is on
- In order to reduce the air conditioning power consumption, the air conditioning system may switch to recirculated air mode automatically.
This may also reduce fuel consumption.
- Recirculated air mode is selected as a default mode when the engine switch is turned to the “ON” position (vehicles without a smart key system) or IGNITION ON mode (vehicles with a smart key system).
- It is possible to switch to outside air mode at any time by pressing
.
Fogging up of the windows
- The windows will easily fog up when the humidity in the vehicle is high.
Pressing “A/C” button on will dehumidify the air from the outlets and defog the windshield effectively.
- If you turn “A/C” off, the windows may fog up more easily.
- The windows may fog up if the recirculated air mode is used.
Outside/recirculated air mode
- When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing outside air from entering the vehicle interior. During cooling operation, setting the recirculated air mode will also cool the vehicle interior effectively. - Outside/recirculated air mode may automatically switch depending on the temperature setting or the inside temperature.
Temperature display
The temperature display on the multi-information display can be changed.
When
is selected for the air
outlets used
For your driving comfort, air flowing to the feet may be warmer than air flowing to the upper body depending on the temperature setting.
When the outside temperature is low
The dehumidification function may not operate even when the “A/C” button is pressed.
When “A/C ON” flashes in the display
Press the “A/C” button and turn off the air conditioning system before turning it on once more. There may be a problem in the air conditioning system if “A/C ON” continues to flash. Turn the air conditioning system off and have it inspected by your Toyota dealer.
Ventilation and air conditioning odors
- To let fresh air in, set the air conditioning system to the outside air mode.
- During use, various odors from inside and outside the vehicle may enter into and accumulate in the air conditioning system. This may then cause odor to be emitted from the vents.
- To reduce potential odors from occurring:
- It is recommended that the air conditioning system be set to outside air mode prior to turning the vehicle off.
- The start timing of the blower may be delayed for a short period of time immediately after the air conditioning system is started in automatic mode.
Air conditioning filter
Customization
Settings (e.g. “AUTO” button linked operation) can be changed.
WARNINGTo prevent the windshield from fogging up

- Do not use
during
cool air operation in extremely humid weather.The difference between the temperature of the outside air and that of the windshield can cause the outer surface of the windshield to fog up, blocking your vision.
- Do not place anything on the instrument panel which may cover the air outlets.
Otherwise, air flow may be obstructed, preventing the windshield defoggers from defogging.
To prevent burns
- Do not touch the rear view mirror surfaces when the outside rear view mirror defoggers (vehicles with outside rear view mirror defoggers) are on.
- Do not touch the glass at lower part of the windshield or to the side of the front pillars when the windshield wiper de-icer is on. (vehicles with windshield wiper de-icer)
To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the engine is stopped.
Test yourself
A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.