air filter TOYOTA COROLLA 2021 Owners Manual (in English)

5TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
10
COROLLA_U
7-2. Maintenance Maintenance requirements......................................... 457
General maintenance ......... 458
Emission inspection and mainte- nance (I/M) programs....... 461
7-3. Do-it-yourself maintenance Do-it-yourself service precau-tions ................................. 462
Hood .................................. 464
Positioning a floor jack ....... 465
Engine compartment .......... 466
Tires ................................... 475
Tire inflation pressure......... 484
Wheels ............................... 486
Air conditioning filter ........... 487
Wireless remote control/elec- tronic key battery.............. 489
Checking and replacing fuses ......................................... 492
Light bulbs .......................... 495
8-1. Essential information Emergency flashers ........... 502
If your vehicle has to be stopped in an emergency .............. 502
If the vehicle is trapped in rising water ................................ 504
8-2. Steps to take in an emergency If your vehicle needs to be towed......................................... 505
If you think something is wrong ......................................... 509
Fuel pump shut off system ......................................... 510
If a warning light turns on or a warning buzzer sounds .... 511
If a warning message is dis- played .............................. 521If you have a flat tire (vehicles
without spare tire) ............ 523
If you have a flat tire (vehicles with a spare tire) .............. 534
If the engine will not start ... 542
If you lose your keys .......... 544
If the electronic key does not operate properly............... 544
If the vehicle battery is dis- charged ............................ 546
If your vehicle overheats .... 550
If the vehicle becomes stuck ......................................... 553
9-1. Specifications Maintenance data (fuel, oil level, etc.) .................................. 556
Fuel information ................. 568
Tire information .................. 570
9-2. Customization Customizable features ....... 581
9-3. Initialization Items to initialize ................ 589
10-1. For owners Reporting safety defects for U.S. owners ............................. 592
Seat belt instructions for Cana- dian owners (in French) ... 592
SRS airbag instructions for Canadian owners (in French)........ ................................. 59

4
8When trouble arises
9Vehicle specifications
10For owners

4186-1. 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 ou tside 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” s witch is 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
vehicle after closing the windows, it
is recommended that the air intake
mode be set to outside air mode and
the fan speed to a ny setting except
off.
■Outside/recirculated air mode
Setting to the recir culated 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
temperature is high.
■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.487

4246-1. Using the air conditioning system and defogger
COROLLA_Ube 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
mode to encourage better air cir-
culation throughout the vehicle,
helping to reduce odors that occur
when starting the vehicle.
■Air conditioning filter
 P. 4 8 7
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the ho od at the loca-
tion shown in the f ollowing illustra-
tion.
●The meaning of each symbol on
the label are as follows:
■Customization
Some functions can be customized.
(  P.581)
1 Press the automatic mode
switch.
2 Adjust the temperature set-
ting.
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type
Requires registered
technician to service
air conditioning sys-
tem
Flammable refrigerant
WA R N I N G
■To prevent the windshield
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather.
The difference between the tem-
perature of the outside air and
that of the windshield can cause
the outer surface of the wind-
shield to fog up, blocking your
vision.
■When the outside rear view
mirror defoggers are operat-
ing
D o n o t t o u c h t h e o u t s i d e r e a r v i e w
mirror surfaces, as they can
become very hot and burn you.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning
system on longer than necessary
when the engine is off.
■When repairing/replacing
parts of the air conditioning
system
Have repair/replacement per-
formed by your Toyota dealer.
When a part of the air conditioning
system, such as the evaporator, is
to be replaced, it must be
replaced with a new one.
Using automatic mode

451
7
7
Maintenance and care
COROLLA_U
Maintenance and care
.7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 452
Cleaning and protecting the vehicle interior ........... 454
7-2. Maintenance Maintenance requirements.................................. 457
General maintenance.. 458
Emission inspection and maintenance (I/M) pro-
grams ........................ 461
7-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 462
Hood ........................... 464
Positioning a floor jack .................................. 465
Engine compartment ... 466
Tires ............................ 475
Tire inflation pressure.. 484
Wheels ......... ...............486
Air conditioning filter .... 487
Wireless remote con- trol/electronic key battery.................................. 489
Checking and replacing fuses.......................... 492
Light bulbs................... 495

4637-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Radiator
and con-
denser
( P.471)

Tire infla-
tion pres-
sure
( P.484)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.474)
• Water or washer
fluid containing anti-
freeze (for winter
use)
• Funnel (used only for adding water or
washer fluid)
WA R N I N G
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 a fter 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 fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.471)
■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 ai r cleaner filter
removed may cause excessive
engine wear due to dirt in the air.

4877-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Use only Toyota wheel nuts
and wheel nut wrenches
designed for use with your
aluminum wheels.
 When rotating, repairing or
changing your tires, check
that the wheel nuts are still
tight after driving 1000 miles
(1600 km).
 Be careful not to damage the
aluminum wheels when using
tire chains.
 Use only Toyota genuine bal-
ance weights or equivalent
and a plastic or rubber ham-
mer when balancing your
wheels. 1
Turn the engine switch off.
2 Open the glove box. Slide off
the damper (if equipped).
3 Push in the glove box on the
vehicle’s outer side to discon-
nect the claws. Then pull out
the glove box and disconnect
the lower claws.
4 Unlock the filter cover ( ),
pull the filter cover out of the
NOTICE
■Replacing tire pressure warn-
ing valves and transmitters
(vehicles with a tire pressure
warning system)
●Because tire repair or replace-
ment may affect the tire pres-
sure warning valves and
transmitters, make sure to have
tires serviced by your Toyota
dealer or other qualified service
shop. In addition, make sure to
purchase your tire pressure
warning valves and transmit-
ters at your Toyota dealer.
●Ensure that only genuine Toyota
wheels are used on your vehi-
cle.
Tire pressure warning valves
and transmitters may not work
properly with non-genuine
wheels.
Aluminum wheel precau-
tions (if equipped)
Air conditioning filter
The air conditioning filter
must be changed regularly
to maintain air conditioning
efficiency.
Removing the air condi-
tioning filter

4887-3. Do-it-yourself maintenance
COROLLA_U
claws ( ), and remove the
filter cover.
5 Remove the filter case.
6 Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “ UP” marks shown on the
filter and the filter case should be
pointing up.
■Checking interval
Replace the air conditioning filter
according to the maintenance
schedule. In dusty areas or areas
with heavy traffic flow, early replace- ment may be required. (For sched-
uled maintenance information,
please refer to the “Scheduled
Maintenance Guide” or “Owner’s
Manual Supplement”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and rep lace if necessary.
NOTICE
■When using the air condition-
ing system
Make sure that a filter is always
installed.
Using the air conditioning system
without a filter may cause damage
to the system.
■To prevent damage to the fil-
ter cover
When moving the filter cover in
the direction of arrow to release
the fitting, pay attention not to
apply excessive force to the
claws. Otherwise, the claws may
be damaged.

607Alphabetical Index
COROLLA_U
Alphabetical Index
A
A/CAir conditioning filter ............. 487
Automatic air conditioning sys-tem ..................................... 421
Manual air conditioning system ........................................... 416
ABS (Anti-lock Brake System) ............................................... 272Warning light ........................ 513
ACA (Active Cornering Assist) ............................................... 272
Active Cornering Assist (ACA) ............................................... 272
Adaptive Front-lighting System (AFS)...................................... 188
AFS (Adaptive Front-lighting System) ................................. 188
Air conditioning filter ............. 487
Air conditioning system Air conditioning filter ............. 487
Automatic air conditioning sys-tem ..................................... 421
Manual air conditioning system ........................................... 416
Airbags Airbag operating conditions.... 33
Airbag precautions for your child............................................. 36
Correct driving posture ........... 25
Curtain shield airbag operating conditions ............................. 34
Curtain shield airbag precautions ............................................. 36
Front passenger occupant clas- sification system ................... 41
General airbag precautions .... 36
Locations of airbags ............... 31
Modification and disposal of air- bags ..................................... 40 Side airbag operating conditions
.............................................34
Side airbag precautions..........36
Side and curtain shield airbags operating conditions .............34
Side and curtain shield airbags precautions ...........................36
SRS airbags ...........................31
SRS warning light .................512
Alarm Alarm ......................................82
Warning buzzer .................... 511
AM ............................................333
Anchor brackets ... ..............50, 68
Android Auto ...........................344
Antennas (smart key system)125
Anti-lock Brake System (ABS) ...............................................272Warning light.........................513
Apple CarPlay/Android Auto .314 Troubleshooting ....................317
Approach warning ..........236, 246
Apps button (Menu screen) ...285
Armrest ......... ......................... ..443
Assist grips .............................443
Audio .......................................328 Audio source ........................329
Operating information ...........352
Reordering the audio source 329
Screen adjustment ...............331
Some basics .........................329
Sound settings......................330
Turning the sys tem on and off
...........................................329
USB port ...............................330
Voice command system .......332
AUDIO button ..........................283
Audio button (Menu screen) ..285
Audio buttons overview .........283
Audio settings.........................351 Common settings .................351
Radio settings.......................351