radiator TOYOTA COROLLA HATCHBACK 2021 Owners Manual (in English)

4277-2. Maintenance
COROLLA H/B_U
7
Maintenance and care
Exhaust sys-
temThere should not
be any fumes or
strange sounds.
Radiator/con-
denser
The radiator and
condenser should
be free from for-
eign objects.
(  P.438)
Washer fluid
Is there sufficient
washer fluid?
( P.441)
Vehicle interior
ItemsCheck points
Accelerator
pedal
• The accelerator
pedal should
move smoothly
(without uneven
pedal effort or
catching).
Continuously
variable trans-
mission “Park”
mechanism
• When parked on a slope and the
shift lever is in P,
is the vehicle
securely
stopped?
ItemsCheck points
Brake pedal
• Does the brake pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
( P.518)
• Does the brake pedal have the
correct amount
of free play?
( P.518)
Clutch pedal
• Does the clutch
pedal move
smoothly?
• Does the clutch pedal have
appropriate
clearance from
the floor?
( P.518)
• Does the clutch pedal have the
correct amount
of free play?
( P.518)
ItemsCheck points

4327-3. Do-it-yourself maintenance
COROLLA H/B_U
Radiator
and con-
denser
( P.438)

Tire infla-
tion pres-
sure
( P.451)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.441)
• 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.
Fuel 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.438)
■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.

4357-3. Do-it-yourself maintenance
COROLLA H/B_U
7
Maintenance and care
Washer fluid tank ( P.441)
Engine coolant reservoir ( P.435)
Fuse boxes ( P.458)
Engine oil filler cap ( P.436)
Engine oil level dipstick ( P.435)
Battery ( P.439)
Brake fluid reservoir ( P.438)
Radiator ( P.438)
Condenser ( P.438)
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
Engine compar tment
Components
Checking and adding the
engine oil

4387-3. Do-it-yourself maintenance
COROLLA H/B_Uperature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is
a mixture of 55% coolant and 45%
deionized water. (Minimum tem-
perature: -44°F [-42°C])
For more details about coolant, con-
tact your Toyota dealer.
■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 your
Toyota dealer test the cap and
check for leaks in the cooling sys-
tem.
Check the radiator and con- denser and clear away any for-
eign objects. If either of the
above parts is extremely dirty or
you are not sure of their condi-
tion, have your vehicle
inspected by your Toyota dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
WARNING
■When the engine is hot
Do not remove the engine coolant
reservoir cap. ( P.511)
The cooling system may be under
pressure and may spray hot cool-
ant 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
mixture 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
WARNING
■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.
Checking and adding the
brake fluid

5108-2. Steps to take in an emergency
COROLLA H/B_U
1Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the engine.
2 If you see steam:
Carefully lift the hood after
the steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled
down sufficiently, inspect the hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4
The coolant level is satisfac-
tory if it is between the “MAX”
and “MIN” lines on the reser-
voir.
Reservoir
“MAX” line
“MIN” line
5 Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
If your vehicle over-
heats
The following may indicate
that your vehicle is over-
heating.
The engine coolant tem-
perature gauge ( P.74, 78)
is in the red zone or a loss
of engine power is experi-
enced. (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 dis-
play.
 Steam comes out from
under the hood.
Correction procedures

5118-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
able.
6 Start the engine and turn the
air conditioning system on to
check that the radiator cool-
ing fan operates and to check
for coolant leaks from the
radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check these, turn the air
conditioning system on and off
repeatedly. (The fan may not oper-
ate in freezing temperatures.)
7If the fan is not operating:
Stop the engine immediately
and contact your Toyota
dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
WARNING
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions. Failure to do so may result
in serious injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.
●Keep hands and clothing (espe-
cially a tie, a scarf or a muffler)
away from the fan and belts.
Failure to do so may cause the
hands or clothing to be caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir caps while the engine and
radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the
engine has cooled down suffi-
ciently. Adding cool coolant to a
hot engine too quickly can cause
damage to the engine.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust etc.).
●Do not use any coolant additive.

567Alphabetical Index
COROLLA H/B_U
Outside rear view mirror defog- gers .................................... 395
RCTA function ...................... 233
Outside temperature .......... 74, 78
Overheating ............................ 510
P
Paddle shift switches ..... 149, 150
Panic mode ............................... 99
Parking brake Operation ............................. 154
Parking brake engaged warning buzzer ................................ 156
Warning light ........................ 478
Warning message ................ 156
Parking lights Light switch .......................... 160
Replacing light bulbs ............ 461
PCS (Pre-Collision System) Function ............................... 178
PCS OFF switch................... 180
Warning light ........................ 477
Personal lights ....................... 401 Wattage ................................ 520
Phone ...................................... 348 About the contacts in the contact list ....................................... 352
Phone screen operation ....... 348
Registering/Connecting a Blue- tooth
® phone ...................... 350
Some basics......................... 349
Troubleshooting.................... 374
Voice command system ....... 352
When selling or disposing of the vehicle ................................ 352
Phone button .......................... 348
Phone button (Menu screen) . 259
Phone button (Setup screen) 262
Phone settings ....................... 364 Contacts/Call history settings366
Message settings ................. 372
Notifications settings ............ 365 Sounds settings ....................364
Placing a call using the Blue- tooth
® hands-free system....353
By call history .......................353
By contacts list .....................354
By favorites list .....................354
By home screen ...................356
By keypad.............................355
Power outlets ..........................408
Power steering (Electric power steering system) ...................247Warning light.........................475
POWER VOLUME knob ..........304
Power windows Door lock linked window opera-tion......................................126
Jam protection function ........125
Operation..............................125
Window lock switch ..............127
Pre-Collision System (PCS) Function................................178
PCS OFF switch ...................180
Warning light.........................477
R
Radar cruise control...............215
Radar cruise control (dynamic radar cruise control with
full-speed range)...................204
Radiator ...................................438
Radio........................................308 Displaying the radio ID ......... 311
How to subscribe to SiriusXM Satellite Radio ....................310
Presetting a station ...............308
Radio broadcast data system309
Refer to the tabl e below to iden-
tify the problem and take the
suggested corrective action 311
RCTA Function................................233
Warning message.................234