2022 TOYOTA COROLLA cooling

381
6
6-1. Using the air conditioning system and defogger
Interior features
(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 follows
each time the sw itch is pressed.
1Upper body
2 Upper body and feet
3 Feet
4 Feet and the windshield defog-
ger operates
■Switching between outside air
and recirculated air modes
Press the outside/recirculated air
mode switch.
The mode switches between outside air
mode and recirculated air mode modes
each time the sw itch is operated.
When recirculated air mode is selected,
the indicator illuminates on the out-
side/recirculated air mode switch.
■Set cooling and dehumidifica-
tion function
Press the “A/C” switch.
When the function is on, the indicator
illuminates on the “A/C” switch.
■Defogging the windshield
Defoggers are used to defog the
windshield and front side windows.
Press the windshield defogger
switch.
Set the outside/recirculated air mode
switch to outside air mode if the recircu-
lated 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 illuminates on the
windshield defogger switch.
■Defogging the rear window
and outside rear view mirrors
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 illuminates on the
rear window defogger switch.

3826-1. Using the air conditioning system and defogger
Vehicles with outside rear view
mirror defoggers
Defoggers are used to defog the
rear window, and to remove rain-
drops, dew and frost from the out-
side rear view mirrors.
Press the rear window and outside
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 dehu-
midify the air from the outlets and defog the windshield effectively.
●If you turn “A/C” switch is off, the win-dows may fog up more easily.
●The windows may fog up if the recir-culated air mode is used.
■When driving on dusty roads
Close all windows. If dust thrown up by
the vehicle is still dr awn into the vehicle
after closing the windows, it is recom- mended 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 pre- venting dirty air from entering the
vehicle interior and helping to cool the
vehicle when the outside air tempera- ture is high.
●During cooling operation, setting the recirculated air mode will also cool the
vehicle interior effectively.
■When the outside temperature falls
to nearly 0°C (32°F)
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 condition-ing 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 condi-tioning system be set to outside air
mode prior to turning the vehicle off.
●When parking, the system automati-
cally switches to outside air mode to
encourage better air circulation throughout the vehicle, helping to
reduce odors that occur when starting
the vehicle.
■Air conditioning filter
 P. 4 4 7
WA R N I N G
■To prevent the windshield from
fogging up
Do not use the windshield defogger switch during cool air operation in
extremely humid weather. The differ-
ence 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.
■When the outside rear view mir-ror defoggers are operating
(vehicles with outside rear view
mirror defoggers)
Do not touch the outside rear view
mirror surfaces, as they can become
very hot and burn you.

387
6
6-1. Using the air conditioning system and defogger
Interior features
■Setting the fan speed
Operate the fan speed increases
switch to increase the fan speed
and the fan speed decreases
switch to decrease the fan speed.
Pressing the off switch to turns off the
fan.
■Change the airflow mode
Press the airflow mode control
switch.
The airflow mode changes as follows
each time the sw itch is pressed.
1Upper body
2 Upper body and feet
3 Feet
4 Feet and the windshield defog-
ger operates
■Switching between outside air
and recirculated air modes
Type A
 To change to recirculated air
mode, press the recirculated air
mode switch.
The indicator illuminates on the recircu-
lated air mode switch.
 To change to outside air mode,
press the outside air mode
switch.
The indicator illuminates on the outside
air mode switch.
Ty p e B
Press the outside/recirculated air
mode switch.
The mode switches between outside air
mode and recirculated air mode modes
each time the switch is operated.
When recirculated air mode is selected,
the indicator illuminates on the out-
side/recirculated air mode switch.
■Set cooling and dehumidifica-
tion function
Press the “A/C” switch.
When the function is on, the indicator
illuminates on the “A/C” switch.
■Defogging the windshield
Defoggers are used to defog the
windshield and front side windows.
Press the windshield defogger
switch.
Set the outside/recirculated air mode
switch to outside air mode if the recircu-
lated 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 illuminates on the
windshield defogger switch.

419
7
7-3. Do-it-yourself maintenance
Maintenance and care
1 Pull the hood lock release lever.
The hood will pop up slightly.
2Pull the auxiliary catch lever to
the left and lift the hood.
WA R N I N G
●Do not smoke, cause sparks or
expose an open flame to fuel or the
battery. Fuel and battery fumes are flammable.
●Be extremely cautious when work-ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and dam-
age painted surfaces. If fluid gets
on your hands or in your eyes, flush the affected area with clean water
immediately.
If you still experience discomfort, consult a doctor.
■When working near the electric cooling fan or radiator grille
Be sure the engine switch is OFF.
With the engine switch in ON, the electric cooling fan may automatically
start to run if the air conditioning is on
and/or the coolant temperature is high. (P.426)
■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 fil- ter
Driving with the air cleaner filter
removed may cause excessive engine wear due to dirt in the air.
■If the fluid level is low or high
It is normal for the brake fluid level to
go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill-
ing, it may indicate a serious problem.
Hood
Opening the hood

4227-3. Do-it-yourself maintenance
1ZR-FAE engine
Washer fluid tank ( P.428)
Engine coolant reservoir ( P. 4 2 5 )
Fuse boxes ( P.452)
Engine oil level dipstick ( P.423)
Engine oil filler cap ( P.424)
Battery ( P.427)
Radiator ( P.426)
Condenser ( P.426)
Electric cooling fan
Engine compartment
Components

423
7
7-3. Do-it-yourself maintenance
Maintenance and care
M15A-FKS engine
Washer fluid tank ( P.428)
Engine coolant reservoir ( P. 4 2 5 )
Fuse boxes ( P.452)
Engine oil filler cap ( P.424)
Engine oil level dipstick ( P.423)
Battery ( P.427)
Radiator ( P.426)
Condenser ( P.426)
Electric cooling fan
With the engine at operating tem-
perature and turned off, check the
oil level on the dipstick.
■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 bottom of
the engine.
Checking and adding the
engine oil

4267-3. Do-it-yourself maintenance
engine is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( P.518)
■Coolant selection
Only use “Toyota Super Long Life Cool-
ant” or a similar high quality ethylene glycol based non-silicate, non-amine,
non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a
mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -35°C [-31°F])
For more details about coolant, contact
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■If the coolant level drops within a
short time of replenishing
Visually check the radiator, hoses,
engine coolant reservoir caps, drain
cock and water pump. If you cannot find a leak, have any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer, test the cap and check for leaks in the cooling system.
Check the radiator and condenser
and clear away any foreign objects.
If either of the above parts is
extremely dirty or you are not sure
of their condition, have your vehicle
inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
WA R N I N G
■When the engine is hot
Do not remove the engine coolant
reservoir cap.
The cooling system may be under
pressure and may spray hot coolant if
the cap is removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mix-
ture of water and antifreeze must be
used to provide proper lubrication, corrosion protection and cooling. Be
sure to read the antifreeze or coolant
label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or
paint.
Checking the radiator and
condenser
WA R N I N G
■When the engine is hot
Do not touch the radiator or con- denser as they may be hot and cause
serious injuries, such as burns.

5188-2. Steps to take in an emergency
1Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the
engine.
2 If you see steam: Carefully lift
the hood after the steam sub-
sides.
If you do not see steam: Care-
fully lift the hood.
3 After the engine has cooled
down sufficiently, inspect the
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entangled in the cooling fan or engine
drive belt.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant tempera-
ture gauge ( P.85, 88) is in
the red zone or a loss of
engine power is experienced.
(For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” is shown on
the multi-information display.
 Steam comes out from under
the hood.
Correction procedures