TOYOTA 4RUNNER 2021 Owners Manual (in English)

3415-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)■
Fan speed setting
To adjust the fan speed, turn clockwise (increase) or coun-
terclockwise (decrease).
Turning the knob to “OFF” turns off the fan.
■
Change the airflow mode
To select the air outlets, set to the desired position.
The positions between the air outlet selections shown below can also be
selected for more delicate adjustment.
■
Other functions
● Switching between outside a ir and recirculated air modes
● Defogging the windshield ( P. 3 4 2 )
● Defogging the rear window and outside rear view mirrors
(  P. 342)
● Windshield wiper de-icer (if equipped) ( P. 3 4 2 )
■Switching between outside air and recirculated air modes
Press .
The mode switches between outside air mode (introduces air from out-
side the vehicle) (indicator off) and recirculated air mode (re cycles air
inside the vehicle) (indicator on) each time the button is pressed.
Other functions

3425-1. Using the air conditioning system and defogger
4RUNNER (U)■
Defogging the windshield
Defoggers are used to defog the windshield and front side win-
dows.
Set the air outlet selec
tor dial to position.
If the recirculated air mode is used, it will automatically swi tch to outside
air mode.
To defog the windshield and the side windows early, increase th e air
flow and temperature.
If the dehumidification functi on is not operating, press to
operate the dehumidif ication function.
■Defogging the rear window and outside rear view mirrors
Defoggers are used to defog the rear window, and to remove rain -
drops, dew and frost from the outside rear view mirrors.
Before operating the defoggers, make sure the back window is
completely closed. ( P. 166)
Press
The defoggers will automatically turn off after their operation time. The
operation time varies depending on the ambient temperature and vehi-
cle speed.
■
Windshield wiper de -icer (if equipped)
This feature is used to prevent ice from building up on the win d-
shield and wiper blades.
Turns the windshield wiper de-
icer on/off
The windshield wiper de-icer will
automatically turn off after
approximately 15 minutes.

3435-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)■
Location of a
ir outlets
The air outlets and air volume
changes according to the
selected airflow mode.
■Adjusting the position of and opening and closing the air out-
lets
Air outlets
Front center outletsFront side outlets
Rear outlets
Direct air flow to the le ft or right, up or down.
Turn the knob to open o r close the vent.
1
2

3445-1. Using the air conditioning system and defogger
4RUNNER (U)
■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 wind-
shield effectively.
● If you turn off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ When driving on dusty roads
Close all windows. If dust thrown up by the vehicle is still drawn into the vehi-
cle after closing the windows, it is recommended that the air intake mode be
set to outside air mode and the fan speed to any setting except off.
■ Outside/recirculated air mode
Setting to the recirculated air mode temporarily is recommended in prevent-
ing dirty air from entering the vehicle interior and helping to cool the vehicle
when the outside air temperature is high.
■ 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 turned to the “ON” position (vehicles without a smart key system) or the
engine switch is turned to IGNITION ON mode (vehicles with a sm art key
system).
● It is possible to switch to outside air mode at any time by pre ssing
.
■When the indicator light on flashes
Press
to turn off the cooling and dehumidification function and turn it on
again. There may be a problem in the air conditioning system if the indicator
light continues to flash. Turn the air conditioning system off and have it
inspected by your Toyota dealer.

3455-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)■
When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is pre ssed.
■ 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 system refrigerant
●The meaning of each symbol on the label are as follows:
●
A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
Caution
Air conditioning system
Air conditioning system lubricant type
Requires registered technician to service air conditioning
system
Flammable refrigerant

3465-1. Using the air conditioning system and defogger
4RUNNER (U)
WARNING
■To prevent the windshield from fogging up
● Do not use during cool air operation in extremely humid weathe r.
The difference between the temperature of the outside air and t hat of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns
● 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 the 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.
■ When repairing/replacing parts of the air conditioning system
Have repair/replacement performed by your Toyota dealer.
When a part of the air conditioning system, such as the evapora tor, is to be
replaced, it must be replaced with a new one.
● 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.

3475-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)■
Adjusting the temperature setting
To adjust the temperature setting, turn clockwise to
increases the temperature and turn counterclockwise to
decreases the temperature.
If is not pressed, the system will blow ambient temperature ai
r or
heated air.
■
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.
Automatic air conditioning system
: If equipped
Air outlets and fan speed are automatically adjusted according
to the temperature setting.
Air conditioning controls

3485-1. Using the air conditioning system and defogger
4RUNNER (U)■
Change the airflow mode
To change the air outlets, press , , or .
■Other functions
●
Switching between outside air and recirculated air modes
(  P. 349)
● Defogging the windshield ( P. 3 4 9 )
● Defogging the rear window and outside rear view mirrors
(  P. 349)
● Windshield wiper de-icer (if equipped) ( P. 3 5 0 )
Press .
The air conditioning system begins to operate. Air outlets and fan speed
are automatically adjusted according to the temperature setting .
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 is maintained.
■Adjusting the temperature for driver and passenger seats sep-
arately (“DUAL” mode)
Perform the following procedures to turn on the “DUAL” mode:
●Press .
● Adjust the passenger’s side temperature setting.
The indicator comes on when the “DUAL” mode is on.
While in “DUAL” mode, the temperature of the rear air outlets i s
set at the right-hand side temperature setting.
Using automatic mode
1
2
3

3495-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)■
Switching between outside air
and recirculated air modes
Press .
The mode switches between outside air mode (the indicator is of f) and
recirculated air mode (the indicator is on) each time the butto n is
pressed.
■
Defogging the windshield
Defoggers are used to defog the windshield and front side win-
dows.
Press .
The dehumidification function operates and fan speed increases.
Set the outside/recirculated air mode button to the outside air mode if
the recirculated air mode is used. (It may switch automatically .)
To defog the windshield and the side windows early, turn the ai r flow and
temperature up.
To return to the previous mode, press again when the windshiel d
is defogged.
■
Defogging the rear window and outside rear view mirrors
Defoggers are used to defog the rear window, and to remove rain -
drops, dew and frost from the outside rear view mirrors.
Before operating the defoggers, make sure the back window is
completely closed. ( P. 166)
Press
The defoggers will automatically turn off after their operation time. The
operation time varies depending on the ambient temperature and vehi-
cle speed.
Other functions

3505-1. Using the air conditioning system and defogger
4RUNNER (U)■
Windshield wiper de
-icer (if equipped)
This feature is used to prevent ice from building up on the win d-
shield and wiper blades.
Turns the windshield wiper de-
icer on/off
The windshield wiper de-icer will
automatically turn off after
approximately 15 minutes.
■
Location of a ir outlets
The air outlets and air volume
changes according to the
selected airflow mode.
Air outlets