2023 TOYOTA COROLLA service

1824-5. Using the driving support systems
4-5.Using the driving support systems
*: If equipped
This Owner's Manual contains
information for Ver. 1. For the
latest information about the con-
trols, use, warnings/precautions,
etc. of each function of Toyota
Safety Sense, refer to the Digital
Owner's Manual at the Owner's
Manual website.
If the software of this system
has been updated after initial purchase of the vehicle, before
using this system, be sure to
read the Owner's Manual which
corresponds to the software ver-
sion of the system.
■Precautions for use
●Be aware that some functions
may temporarily be disabled if a
legal or safety related issue
occurs.
●If a connected services contract
has not been entered or has
expired, software updates will not
be able to be performed wire-
lessly.
If the software of this system
has been updated after initial
purchase of the vehicle, to
access the appropriate Owner’s
Manual, it is necessary to check
the software version of the sys-
tem and then visit the Owner's
Manual website.
The software version of the sys-
tem can be checked using One-
App.
Toyota Safety Sense
3.0 software update
*
It is necessary to enter a
connected services con-
tract, provided by Toyota, to
use these functions. For
details, contact your Toyota
dealer.
WARNING
■For safe use
When the Toyota Safety Sense
3.0 software is updated, the oper-
ating methods of functions may
change. Using this system without
knowing the correct operating
methods may lead to an accident
resulting in death or serious injury.
●Make sure to read the Digital
Owner's Manual which corre-
sponds to the software version
of the system, available at the
Owner's Manual website, before
using this system.
Content of the Toyota
Safety Sense Owner's
Manual
Checking your vehicle’s
Toyota Safety Sense ver-
sion
Checking the version
using OneApp

2534-6. Driving tips
4
Driving
4-6.Driving tips
Use fluids that are appropriate
to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
Have a service technician
inspect the condition of the
battery.
 Have the vehicle fitted with
four snow tires or purchase a
set of tire chains for the front
tires.
Ensure that all tires are the same
size and brand, and that chains
match the size of the tires.
Winter driving tips
Carry out the necessary
preparations and inspec-
tions before driving the
vehicle in winter. Always
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions
to reduce the risk of accidents.
Failure to do so m ay result in a
loss of vehicle control and cause
death or serious injury.
●Use tires of the size specified.
●Maintain the recommended
level of air pressure.
●Do not drive in excess of 75
mph (120 km/h), regardless of
the type of snow tires being
used.
●Use snow tires on all, not just
some wheels.
■Driving with tire chains
Observe the following precautions
to reduce the risk of accidents.
Failure to do so may result in the
vehicle being unable to be driven
safely, and may cause death or
serious injury.
●Do not drive in excess of the
speed limit specifi ed for the tire
chains being used, or 30 mph
(50 km/h), whichever is lower.
●Avoid driving on bumpy road
surfaces or over potholes.
●Avoid sudden acceleration,
abrupt steering, sudden brak-
ing and shifting operations that
cause sudden engine braking.
●Slow down sufficiently before
entering a curve to ensure that
vehicle control is maintained.
●Do not use LTA (Lane Tracing
Assist) system.
●Do not use LDA (Lane Depar-
ture Alert) system.
NOTICE
■Repairing or replacing snow
tires (vehicles with a tire pres-
sure warning system)
Request repairs or replacement of
snow tires from Toyota dealers or
legitimate tire retailers.
This is because the removal and
attachment of snow tires affects
the operation of the tire pressure
warning valves and transmitters.

2615-1. Using the air conditioning system and defogger
5
Interior features
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the engine compart-
ment at the location shown in the
following illustration.
●The meaning of each symbol on
the label are as follows:
■Location of air outlets
The air outlets and air volume
changes according to the
selected air flow mode.
: If equipped
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type
Requires registered
technician to service
air conditioning sys-
tem
Flammable refrigerant
WARNING
■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 (if equipped)
Do not touch the outside rear view
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.
Air outlet layout and oper-
ations

2665-1. Using the air conditioning system and defogger
is high.
●Outside/recirculated air mode may
automatically switch depending on
the temperature setting or the
inside temperature.
■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 a ccumulate in the
air conditioning system. This may
then cause odor to be emitted
from the vents.
●To reduce potential odors from
occurring:
• It is recommended that the air
conditioning system be set to out-
side air mode prior to turning the
vehicle off.
• The start timing of the blower may be 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. 3 3 1
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the engine compart-
ment at the location shown in the
following illustration.
●The meaning of each symbol on
the label are as follows:
■Customization
Some functions can be customized.
(  P.412)
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type
Requires registered
technician to service
air conditioning sys-
tem
Flammable refrigerant
WARNING
■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.

287
6
6
Maintenance and care
Maintenance and care
.6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 288
Cleaning and protecting the vehicle interior ........... 291
6-2. Maintenance Maintenance requirements.................................. 294
General maintenance.. 296
Emission inspection and maintenance (I/M) pro-
grams ........................ 298
6-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 300
Hood ........................... 302
Positioning a floor jack .................................. 303
Engine compartment ... 304
Tires ............................ 311
Tire inflation pressure.. 328
Wheels ......... ...............330
Air conditioning filter .... 331
Wireless remote con- trol/electronic key battery.................................. 333
Checking and replacing fuses.......................... 336
Headlight aim .............. 339
Light bulbs................... 340

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

2986-2. Maintenance
The OBD system determines
that a problem exists some-
where in the emission control
system. Your vehicle may not
pass the I/M test and may need
to be repaired. Contact your
Toyota dealer to service the
vehicle.
When the battery is discon-
nected or discharged
Readiness codes that are set
during ordinary driving are erased.
Also, depending on your driving
habits, the readiness codes may
not be completely set.
When the fuel tank cap is
loose
Tires
• Is the tire infla-
tion pressure
correct?
• The tires should not be damaged
or excessively
worn.
• Have the tires been rotated
according to the
maintenance
schedule?
• The wheel nuts should not be
loose.
Windshield
wipers
• The wiper blades should not show
any signs of
cracking, split-
ting, wear, con-
tamination or
deformation.
• The wiper blades should clear the
windshield with-
out streaking or
skipping.
ItemsCheck pointsEmission inspection
and maintenance (I/M)
programs
Some states have vehicle
emission inspection pro-
grams which include OBD
(On Board Diagnostics)
checks. The OBD system
monitors the operation of
the emission control sys-
tem.
If the malfunction indica-
tor lamp comes on
Your vehicle may not pass
the I/M test in the follow-
ing situations:

3066-3. Do-it-yourself maintenance
●When the engine is new, for
example directly after purchasing
the vehicle or after replacing the
engine
●If low quality oil or oil of an inap-
propriate viscosity is used
●When driving at high engine
speeds or with a heavy load, or
when driving while accelerating or
decelerating frequently
●When leaving the engine idling for
a long time, or wh en driving fre-
quently through heavy traffic
The coolant level is satisfactory
if it is between the “MAX” and
“MIN” lines on the reservoir
when the engine is cold.
Reservoir
“MAX” line
“MIN” line
If the level is on or below the “MIN”
line, add coolant up to the “MAX”
line. ( P.387)
■Coolant selection
Only use “Toyota Super Long Life
Coolant” or a similar high quality
ethylene glycol ba sed non-silicate,
non-amine, non-nitrite, and
non-borate coolant with long-life
hybrid organic acid technology.
For the U.S.A.:
“Toyota Super Long Life Coolant” is
a mixture of 50% c oolant and 50%
deionized water. (Minimum tem-
WARNING
■Used engine oil
●Used engine oil contains poten-
tially harmful contaminants
which may cause skin disorders
such as inflammation and skin
cancer, so care should be taken
to avoid prolonged and
repeated contact. To remove
used engine oil from your skin,
wash thoroughly with soap and
water.
●Dispose of used oil and filters
only in a safe an d acceptable
manner. Do not dispose of used
oil and filters in household trash,
in sewers or onto the ground.
Call your Toyota dealer, service
station or auto parts store for
information concerning recy-
cling or disposal.
●Do not leave used engine oil
within the rea ch of children.
NOTICE
■To prevent serious engine
damage
Check the oil level on a regular
basis.
■When replacing the engine oil
●Be careful not to spill engine oil
on the vehicle components.
●Avoid overfilling, or the engine
could be damaged.
●Check the oil level on the dip-
stick every time you refill the
vehicle.
●Be sure the engine oil filler cap
is properly tightened.
Checking the engine cool-
ant