2020 TOYOTA COROLLA cooling

3866-1. Using the air conditioning system and defogger
COROLLA_U
6-1.Using the air conditioning system and defogger
*: If equipped
The display and button positions will differ depending on the type of
the system.
Fan speed control switch
Temperature control switch
“MAX A/C” switch
“A/C” switch
Outside air mode switch
Recirculated air mode switch
Airflow mode control switch
Rear window defogger and outside rear view mirror defoggers
switch
*
Windshield defogger switch
On/off switch
Rear window defogger switch
*
*: If equipped
■Adjusting the temperature
setting
To adjust the temperature set-
ting, turn the temperature con-
trol switch clockwise (warm) or
counterclockwise (cool).If “A/C” switch is not pressed, the
system will blow ambient tempera-
ture air or heated air.
For quick cooling, press the “MAX
A/C” switch. The air conditioning
will automatically turn on and, if an
Manual air condi tioning system*
Air conditioning controls

3876-1. Using the air conditioning system and defogger
COROLLA_U
6
Interior features
air outlet position or is
selected, the system will be set to
recirculated air mode. While “MAX
A/C” is selected, it is not possible to
turn off the air conditioning.
■Fan speed setting
To adjust the fan speed, turn the
fan speed control switch clock-
wise (increase) or counterclock-
wise (decrease).
Pressing the on/off switch to turns
off the fan.
When the fan is off, pressing the
on/off switch or turning the fan
speed control switch clockwise will
turn on the fan.
■Change the airflow mode
Press the airflow mode control
switch.
The airflow mode changes as fol-
lows each time the switch is
pressed.
1 Upper body
2 Upper body and feet
3 Feet
4 Feet and the windshield defogger operates
■Switching between outside
air and recirculated air
modes
 To change to recirculated air
mode, press the recirculated
air mode switch.
The indicator illuminates on the
recirculated air mode switch.
To change to outside air
mode, press the outside air
mode switch.
The indicator illuminates on the out-
side air mode switch.
■Set cooling and dehumidifi-
cation function
Press the “A/C” switch.
When the function is on, the indica-
tor illuminates on the “A/C” switch.
■Defogging the windshield
Defoggers are used to defog the
windshield and front side win-
dows.
Press the windshield defogger
switch.
Set the outside/recirculated air
mode switch to outside air mode if
the recirculated air mode is used.
To defog the windshield and the
side windows quickly, turn the air
flow and temperature up.
To return to the previous mode,
press the windshield defogger
switch again when the windshield is
defogged.
When the windshield defogger
switch is on, the indicator illumi-
nates on the windshield defogger

3886-1. Using the air conditioning system and defogger
COROLLA_Uswitch.
■Defogging the rear window
and outside rear view mir-
rors
Vehicles without outside rear
view mirror defoggers
A defogger is used to defog the
rear window.
Press the rear window defogger
switch.
The defogger will automatically turn
off after a while.
When the rear window defogger
switch is on, the indicator illumi-
nates on the rear window defogger
switch.
Vehicles with outside rear
view mirror defoggers
Defoggers are used to defog the
rear window, and to remove
raindrops, dew and frost from
the outside rear view mirrors.
Press the rear window and out-
side rear view mirror defoggers
switch.
The defoggers will automatically
turn off after a while.
When the rear window and outside
rear view mirror defoggers switch is
on, the indicator illuminates on the
rear window and outside rear view
mirror defoggers switch.
■Fogging up of the windows
●The windows will easily fog up
when the humidity in the vehicle is
high. Turning “A/C” switch is on
will dehumidify the air from the
outlets and defog the windshield
effectively.
●If you turn “A/C” switch is 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
outside/recirculated air mode switch
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
falls to nearly 32°F (0°C)
The dehumidification function may
not operate even when “A/C” switch
is pressed.
■Ventilation and air conditioning
odors
●To let fresh air in, set the air condi-
tioning 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.
●It is recommended that the air
conditioning system be set to out-
side air mode prior to turning the
vehicle off.
●When parking, the system auto-
matically switches to outside air
mode to encourage better air cir-
culation throughout the vehicle,
helping to reduce odors that occur
when starting the vehicle.
■Air conditioning filter
 P.457
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the hood at the loca-
tion shown in th e following illustra-

3926-1. Using the air conditioning system and defogger
COROLLA_U
■Setting the fan speed
To adjust the fan speed, turn the
fan speed control switch clock-
wise (increase) or counterclock-
wise (decrease).
Pressing the off switch to turns off
the fan.
■Change the airflow mode
Press the airflow mode control
switch.
The airflow mode changes as fol-
lows each time the switch is
pressed.
1 Upper body
2 Upper body and feet
3 Feet
4 Feet and the windshield
defogger operates
■Switching between outside
air and recirculated air
modes
 To change to recirculated air
mode, press the recirculated
air mode switch.
The indicator illuminates on the recirculated air mode switch.

To change to outside air
mode, press the outside air
mode switch.
The indicator illuminates on the out-
side air mode switch.
■Set cooling and dehumidifi-
cation function
Press the “A/C” switch.
When the function is on, the indica-
tor illuminates on the “A/C” switch.
■Defogging the windshield
Defoggers are used to defog the
windshield and front side win-
dows.
Press the windshield defogger
switch.
Set the outside/recirculated air
mode switch to outside air mode if
the recirculated air mode is used. (It
may switch automatically.)
To defog the windshield and the
side windows quickly, turn the air
flow and temperature up.
To return to the previous mode,
press the windshield defogger
switch again when the windshield is
defogged.
When the windshield defogger
switch is on, the indicator illumi-
nates on the windshield defogger
switch.
■Defogging the rear window
and outside rear view mir-
rors
Defoggers are used to defog the
rear window, and to remove
raindrops, dew and frost from

3936-1. Using the air conditioning system and defogger
COROLLA_U
6
Interior features
the outside rear view mirrors.
Press the rear window and out-
side rear view mirror defoggers
switch.
The defoggers will automatically
turn off after a while.
When the rear window and outside
rear view mirror defoggers switch is
on, the indicator illuminates on the
rear window and outside rear view
mirror defoggers switch.
■Eco air conditioning mode
The air conditioning is controlled
with low fuel consumption priori-
tized such as reducing fan
speed, etc.
Press the eco air conditioning
mode switch.
When the eco air conditioning
mode is on, the indicator illumi-
nates on the eco air conditioning
mode switch.
■When the outside temperature
exceeds 75°F (24°C) and the air
conditioning system is on
●In order to reduce the air condi-
tioning power consumption, the air
conditioning system may switch to
recirculated air mode automati-
cally. This may also reduce fuel
consumption.
●Recirculated air mode is selected
as a default mode when the
engine switch is turned to ON.
●It is possible to switch to outside
air mode at any time by pressing
the outside air mode switch.
■Fogging up of the windows
●The windows will easily fog up
when the humidity in the vehicle is
high. Turning “A/C” on will dehu-
midify 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
the outside/recirculated air mode
switch to the recirculated air
mode. This is effective in prevent-
ing 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.
■When the outside temperature
falls to nearly 32°F (0°C)
The dehumidification function may
not operate even when “A/C” switch
is pressed.
■Ventilation and air conditioning
odors
●To let fresh air in, set the air condi-
tioning 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 out-
side 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 con-
ditioning system is started in auto-
matic mode.
●When parking, the system auto-
matically switches to outside air

4337-3. Do-it-yourself maintenance
COROLLA_U
7
Maintenance and care
Radiator
and con-
denser
(  P.440)

Tire infla-
tion pres-
sure
( P.453)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.443)
• Water or washer
fluid containing anti-
freeze (for winter
use)
• Funnel (used only for adding water or
washer fluid)
WARNING
The engine compartment contains
many mechanisms and fluids that
may move suddenly, become hot,
or become electrically energized.
To avoid death or serious injury,
observe the following precautions.
■When working on the engine
compartment
●Keep hands, clothing and tools
away from the moving fan and
engine drive belt.
●Be careful not to touch the
engine, radiator, exhaust mani-
fold, etc. right after driving as
they may be hot. Oil and other
fluids may also be hot.
●Do not leave anything that may
burn easily, such as paper and
rags, in the engine compart-
ment.
●Do not smoke, cause sparks or
expose an open flame to fuel or
the battery. Fuel and battery
fumes are flammable.
ItemsParts and tools●Be extremely cautious when
working on the battery. It con-
tains poisonous and corrosive
sulfuric acid.
■When working near the elec-
tric cooling fan or radiator
grille
Be sure the engine switch is OFF.
With the engine switch in ON, the
electric cooling fan may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.440)
■Safety glasses
Wear safety glasses to prevent
flying or falling material, fluid
spray, etc. from getting in your
eyes.
NOTICE
■If you remove the air cleaner
filter
Driving with the air cleaner filter
removed may cause excessive
engine wear due to dirt in the air.

4367-3. Do-it-yourself maintenance
COROLLA_U
1.8 L 4-cylinder (2ZR-FAE) engineWasher fluid tank ( P.443)
Engine coolant reservoir ( P.436)
Fuse boxes ( P.461)
Engine oil level dipstick ( P.437)
Engine oil filler cap ( P.438)
Battery ( P.442)
Brake fluid reservoir ( P.441)
Radiator ( P.440)
Condenser ( P.440)
Electric cooling fan
Engine compar tment
Components

4377-3. Do-it-yourself maintenance
COROLLA_U
7
Maintenance and care
2.0 L 4-cylinder (M20A-FKS) engine Washer fluid tank ( P.443)
Engine coolant reservoir ( P.436)
Fuse boxes ( P.461)
Engine oil filler cap ( P.438)
Engine oil level dipstick ( P.437)
Battery ( P.442)
Brake fluid reservoir ( P.441)
Radiator ( P.440)
Condenser ( P.440)
Electric cooling fan
With the engine at operating
temperature and turned off,
check the oil level on the dip-
stick.
■Checking the engine oil
1 Park the vehicle on level
ground. After warming up the
engine and turning it off, wait
more than 5 minutes for the
oil to drain back into the bot-
tom of the engine.Checking and adding the
engine oil