radiator TOYOTA COROLLA 2023 Owners Manual

2966-2. Maintenance
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.308)
Brake fluid
Is the brake fluid at
the correct level?
( P.307)
Engine coolant
Is the engine cool-
ant at the correct
level? ( P.306)
Engine oil
Is the engine oil at
the correct level?
( P.304)
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.307)
Washer fluid
Is there sufficient
washer fluid?
( P.310)
Vehicle interior
ItemsCheck points
Accelerator
pedal
The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Continuously
variable trans-
mission “Park”
mechanismWhen parked on a
slope and the shift
lever is in P, is the
vehicle securely
stopped?
Brake pedal
• Does the brake
pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
( P.396)
• Does the brake pedal have the
correct amount
of free play?
( P.396)
ItemsCheck points

3016-3. Do-it-yourself maintenance
6
Maintenance and care
Radiator
and con-
denser
( P.307)

Tire infla-
tion pres-
sure
( P.328)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.310)
• 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 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.307)
■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.

3046-3. Do-it-yourself maintenance
Washer fluid tank ( P.310)
Engine coolant reservoir ( P.306)
Fuse boxes ( P.336)
Engine oil filler cap ( P.305)
Engine oil level dipstick ( P.304)
Battery ( P.308)
Brake fluid reservoir ( P.307)
Radiator ( P.307)
Condenser ( P.307)
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

3076-3. Do-it-yourself maintenance
6
Maintenance and care
perature: -31°F [-35°C])
For 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.
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

3877-2. Steps to take in an emergency
7
When trouble arises1Stop 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 sub-
sides.
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.86, 89)
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

3887-2. Steps to take in an emergency
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 cap 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.

445Alphabetical Index
Driving support system informa-tion display ..................... 94, 99
Dynamic radar cruise control 222
Eco Driving Indicator ........ 93, 98
Fuel economy................... 93, 98
Menu icons ....................... 91, 97
Meter control switches ..... 92, 97
Navigation system-linked display ....................................... 94, 99
Settings .......................... 95, 100
Tire pressure ........................ 313
Vehicle information display... 95, 100
Warning message ................ 366
N
Navigation system-linked display ........................................... 94, 99
Noise from under vehicle .......... 5
O
Odometer ............................ 87, 90
Odometer and trip meter display
Display change button...... 87, 90
Display items .................... 87, 90
Oil Engine oil ............................. 394
Open trays .............................. 275
Opener Fuel filler door ...................... 180
Hood..................................... 302
Trunk .................................... 118
Outside rear view mirrors Adjustment ........................... 132
BSM (Blind Spot Monitor)..... 232
Folding ................................. 133
Outside rear view mirror defog-gers ............................ 260, 265
RCTA function ...................... 237
Safe Exit Assist .................... 243
Outside temperature .......... 86, 89 Overheating.............................387
P
Paddle shift switches .....164, 165
Panic mode .............................109
Parking brake
Operation..............................168
Parking brake engaged warning buzzer.................................170
Warning light.........................363
Warning message.................170
Parking lights Light switch...........................173
Replacing light bulbs ............341
Wattage ................................398
PCS (Pre-Collision System) ...190 Function................................191
Warning light.........................361
PDA (Proactive driving assist) [PDA (Proactive driving assist)]............................................... 211
Personal lights ........................271 Wattage ................................398
Power outlet ............................278
Power steering (Electric power steering system) ...................249Warning light.........................358
Power windows Door lock linked window opera-tion......................................135
Jam protection function ........134
Operation..............................134
Window lock switch ..............136
Pre-Collision System (PCS) ...190 Function................................191
Warning light.........................361
R
Radiator ...................................307
RCTAFunction................................237