2023 TOYOTA COROLLA HATCHBACK radiator

2676-2. Maintenance
6
Maintenance and care
General maintenance
Listed below are the general
maintenance items that
should be performed at the
intervals specified in the
“Owner’s Warranty Informa-
tion Booklet” or “Owner’s
Manual Supplement/Sched-
uled Maintenance Guide”. It
is recommended that any
problem you notice should
be brought to the attention
of your Toyota dealer or
qualified service shop for
advice.
WARNING
■If the engine is running
Turn the engine off and ensure
that there is adequate ventilation
before performing maintenance
checks.
Engine compartment
ItemsCheck points
BatteryCheck the connec-
tions. ( P.279)
Brake fluid
Is the brake fluid at
the correct level?
( P.278)
Engine coolant
Is the engine cool-
ant at the correct
level? ( P.277)
Engine oil
Is the engine oil at
the correct level?
( P.275)
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.278)
Washer fluid
Is there sufficient
washer fluid?
( P.281)
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

2726-3. Do-it-yourself maintenance
Radiator
and con-
denser
( P.278)

Tire infla-
tion pres-
sure
( P.299)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.281)
• 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 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.
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 fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.278)
■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.

2756-3. Do-it-yourself maintenance
6
Maintenance and care
Washer fluid tank (P.281)
Engine coolant reservoir ( P.275)
Fuse boxes ( P.306)
Engine oil filler cap ( P.276)
Engine oil level dipstick ( P.275)
Battery ( P.279)
Brake fluid reservoir ( P.278)
Radiator ( P.278)
Condenser ( P.278)
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

2786-3. Do-it-yourself maintenance
perature: -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.363)
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 d amaging 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

3627-2. Steps to take in an emergency
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.72, 75)
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

3637-2. Steps to take in an emergency
7
When trouble arises
able.
6Start 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 op erating 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.)
7 If 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 sca rf 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.

417Alphabetical Index
Navigation system-linked display....................................... 80, 85
Settings ............................ 81, 86
Tire pressure ........................ 285
Vehicle information display81, 86
Warning message ................ 330
N
Navigation system-linked display ........................................... 80, 85
Noise from under vehicle .......... 5
O
Odometer ............................ 73, 76
Odometer and trip meter display
Display change button...... 73, 76
Display items .................... 73, 76
Oil Engine oil ............................. 368
Open tray ................................ 247
Opener Back door ............................. 101
Fuel filler door ...................... 157
Hood..................................... 273
Outside rear view mirrors Adjustment ........................... 115
BSM (Blind Spot Monitor)..... 209
Folding ................................. 116
Outside rear view mirror defog-gers .................................... 237
RCTA function ...................... 214
Safe Exit Assist .................... 219
Outside temperature .......... 72, 75
Overheating ............................ 362
P
Paddle shift switches ..... 139, 140
Panic mode ............................... 93
Parking brake Operation ............................. 142 Parking brake engaged warning
buzzer.................................144
Warning light.........................326
Warning message.................144
Parking lights Light switch...........................148
Replacing light bulbs ............309
PCS (Pre-Collision System) ...167 Function................................168
Warning light.........................324
PDA(Proactive driving assist)[PDA(Proactive driving
assist)] ...................................187
Personal lights ........................243 Wattage ................................372
Power outlets ..........................251
Power steering (Electric power steering system) ...................226Warning light.........................322
Power windows Door lock linked window opera-tion...................................... 118
Jam protection function ........ 117
Operation.............................. 117
Window lock switch .............. 119
Pre-Collision System (PCS) ...167 Function................................168
Warning light.........................324
R
Radiator ...................................278
RCTAFunction................................214
RCTA function .........................215
Rear Cross Traffic Alert (RCTA) ...............................................214
Rear seats ...............................108 Head restraints ..................... 110
Rear side marker lights Light switch...........................148
Rear turn signal lights Replacing light bulbs ............309