2019 TOYOTA TUNDRA Owners Manual (in English)

4176-1. Using the air conditioning system
6
Interior features
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the
windshield effectively.
● If you turn 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 the out-
side/recirculated air mode button 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.
■ When the outside temperature exceeds 75 F (24 C) and air conditioning
system is on
● In order to reduce the air conditioning power consumption, the air condition-
ing 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 en gine switch
is in the “ON” position.
● It is possible to switch to outside air mode at any time by pre ssing .
■ When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is
pressed.
■ Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the out side air mode.
● During use, various odors from inside and outside the vehicle m ay enter into
and accumulate in the air conditioning system. This may then ca use odor to
be emitted from the vents.
● To reduce potential odors from occurring:
It is recommended that the air conditioning system be set to ou tside air
mode prior to turning the vehicle off.
■ Air conditioning filter
P. 513

4186-1. Using the air conditioning system
WARNING
■To 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 wind-
shield can cause the outer surface of the windshield to fog up, blocking
your vision.
■ To prevent burns (vehicles with rear view mirror defoggers and wind-
shield wiper de-icer)
● Do not touch the rear view mirror surfaces when the outside rear view mir-
ror defoggers are on.
● Do not touch the glass at lower part of the windshield or to th e side of the
front pillars, when the windshield wiper de-icer is on.
NOTICE
■ To prevent battery discharge
Do not leave the air conditioning system on longer than necessa ry when the
engine is stopped.
● Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers to
defog.

4196-1. Using the air conditioning system
6
Interior features
Automatic air conditioning system
■Adjusting the temperature setting
To adjust the temperature set-
ting, turn the temperature con-
trol dial clockwise (warm) or
counterclockwise (cool).
If is not pressed, the sys-
tem will blow ambient tempera-
ture air or heated air.
The air conditioning system
switches between individual and
simultaneous mode each time is pressed. (P. 420)
■
Fan speed setting
To adjust the fan speed, press “ ” on to increase the fan speed
and “ ” to decrease the fan speed.
Press to turn the fan off.
: If equipped
Air outlets and fan speed are automatically adjusted according
to the temperature setting.
Air conditioning controls

4206-1. Using the air conditioning system
■Change the airflow mode
To change the airflow, press .
Air outlets are adjusted each time the button is pressed.
■
Other functions
● Switching between outside air and recirculated air modes
(  P. 421)
● Defogging the windshield ( P. 4 2 1 )
● Defogging the back window (CrewMax models) ( P. 421)
● Defogging the outside rear view mirrors (if equipped) ( P. 421)
● Windshield wiper de-icer (if equipped) ( P. 4 2 2 )
Press .
Adjust the temperature setting.
To stop the operation, press .
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the au to-
matic mode indicator goes off. However, automatic mode for func -
tions other than that o perated are maintained.
■Adjusting the temperature for driver and passenger seats sep-
arately (“SYNC” mode)
The air conditioning system swi tches between individual and sim ul-
taneous mode each ti me is pressed.
Simultaneous mode (the i ndicator on is on):
The driver’s side temperature control dial can be used to adjus t the
temperature for driver’s and fr ont passenger’s side. At this ti me,
operate the front passenger’s side temperature control dial to enter
individual mode.
Individual mode (the indicator on is off):
The temperature for the driver’s and front passenger’s side can be
adjusted separately.
Using by automatic mode
1
2
3

4216-1. Using the air conditioning system
6
Interior features
■Switching between outside air and recirculated air modes
Press .
The mode switches between outside air mode (introduces air from
outside the vehicle) (indicator off) and recirculated air mode (recy-
cles air inside the vehicle) (in dicator on) each time the butto n is
pressed.
■Defogging the windshield
Defoggers are used to defog the windshield and front side win-
dows.
Press .
Set the outside/recirculated air mode button to outside air mod e if the recir-
culated air mode is used. (It may switch automatically.) To def og the wind-
shield and the side windows early, turn the air flow and temper ature up.
To return to the previous mode, press again when the windshield is
defogged.
■
Defogging the back wi ndow (CrewMax models)
Defogger is used to defog the back window.
Press .
The defogger will automatically turn off after approximately 15 minutes.
■
Defogging the outside rear v iew mirrors (if equipped)
Defogger is used to defog to remove raindrops, dew and frost fr om
the outside rear view mirrors.
Press or .
The defogger will automatically turn off after approximately 15 minutes.
CrewMax models: Turning the back window defogger on will turn t he out-
side rear view mirror defoggers on.
Other functions

4226-1. Using the air conditioning system
■Windshield wiper de -icer (if equipped)
This feature is used to prevent ice from building up on the win d-
shield and wiper blades.
Press or .
The defogger will automatically turn off after approximately 15 minutes.
Double Cab models: Turning the outside rear view mirror defogge rs on will
turn the windshield wiper de-icer on.
CrewMax models: Turning the back window defogger on will turn t he wind-
shield wiper de-icer on.
■
Location of a ir outlets
Air outlets and air volume
changes according to the
selected airflow mode.
*: CrewMax models
■
Adjusting the position of and opening and closing the air out-
lets
Front
Direct air flow to the left or right,
up or down.
Air outlets
*

4236-1. Using the air conditioning system
6
Interior features
Open the vent
Close the vent
Rear (CrewMax models)
Direct air flow to the left or right,
up or down.
Turn the knob to open or close
the vent.
1
2
1
2

4246-1. Using the air conditioning system
■Using automatic mode
Fan speed is adjusted automatically according to the temperatur e setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
■ Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the
windshield effectively.
● If you turn 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 the out-
side/recirculated air mode button to the recirculated air mode. This is effec-
tive in preventing outside air from entering the vehicle interi or. During
cooling operation, setting the recirculated air mode will also cool the vehicle
interior effectively.
● Outside/recirculated air mode may automatically switch dependin g on the
temperature setting or the inside temperature.
■ When the outside temperature exceeds 75°F (24°C) and the air co ndition-
ing system is on
● In order to reduce the air conditioning power consumption, the air condition-
ing 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 en gine switch
is in the “ON” position.
● It is possible to switch to outside air mode at any time by pre ssing .
■ When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is selected.