check engine TOYOTA COROLLA 2021 (in English) Owner's Guide

3055-3. Connectivity settings
5
Audio
COROLLA_U
1Display the Bluetooth® set-
tings screen. ( P.302)
2 Follow the steps in “Connect-
ing a Bluetooth
® device” from
step 2. (P.303)
■Reconnecting the Blue-
tooth
® phone
If a Bluetooth
® phone is discon-
nected due to poor reception
from the Bluetooth
® network
when the engine switch is in
ACC or ON, the system auto-
matically reconnects the Blue-
tooth
® phone.
Up to 5 Bluetooth
® devices can
be registered.
Bluetooth
® compatible phones
(HFP) and audio players (AVP)
can be registered simultane-
ously.
This operation cannot be per-
formed while driving.
1 Display the Bluetooth
® set-
tings screen. ( P.302)
2 Select “Add New Device”.
When another Bluetooth®
device is connected
To disconnect the Bluetooth®
device, select “Yes”.
When 5 Bluetooth® devices
have already been registered
A registered device needs to be
replaced. Select “Yes”, and select
the device to be replaced.
3 Follow the steps in “Register-
ing a Bluetooth
® phone for
the first time” from step 5.
( P.298)
This operation cannot be per-
formed while driving.
1 Display the Bluetooth
® set-
tings screen. ( P.302)
2 Select “Remove Device”.
3 Select the desired device.
4 Select “Yes” when the confir-
mation screen appears.
5 Check that a confirmation
screen is displayed when the
operation is complete.
When deleting a Bluetooth® phone,
the contact data will be deleted at
the same time.
Registering a Bluetooth®
device
Deleting a Bluetooth®
device

3935-14. Phone settings
5
Audio
COROLLA_U
Backed-up contact data (vCard
formatted) can be transferred
from USB device or Bluetooth
®
phone to this system.
1 Connect a USB device.
( P.330)
2 Select “Transfer Contacts
from Device”.
3 Select “From USB”.
4 Select “USB 1” or “USB 2”
when the multiple USB
devices are connected. If a
USB device is connected,
skip this procedure.
5 Select “Replace Contacts” or
“Add Contact”. If the contact
is already registered, skip
this procedure.
“Replace Contacts”: Select to trans-
fer the contact fro m the connected
USB device or Bluetooth
® phone
and replace the current one.
“Add Contact”: Select to transfer
the desired contact data from the
connected USB device or Blue-
tooth
® phone to add to the current
one.
6 Select a desired file from
vCard file list.
7 Check that a confirmation
screen is displayed when the
operation is complete.
●Depending on the type of Blue-
tooth® phone used and number of
files, it may take time to display
vCard file lists and download con-
tacts.
●Downloading may not complete
correctly in the following cases:
• If the engine switch is turned off
during downloading.
• If the USB device or Bluetooth
®
phone is removed before down-
loading is complete.
New contact data can be regis-
tered.
Up to 4 numbers per person can
be registered. For PBAP com-
patible Bluetooth
® phones, this
function is available when “Auto-
matic Transfer” is set to off.
( P.390)
1 Select “New Contact”.
2 Enter the name and select
“OK”.
3 Enter the phone number and
select “OK”.
4 Select the phone type for the
phone number.
5 To add another number to
this contact, select “Yes”.
■Registering a new contact
in a different way (from the
call history screen)
1 Display the phone top
screen. ( P.373)
2 Select “History” and select a
contact not yet registered in
the contact list.
3 Select “Add to Contacts”.
4 Follow the steps in “Register-
ing a new contact to the con-
From USB device
Registering a new contact
to the contacts list

4015-15. What to do if... (Bluetooth®)
5
Audio
COROLLA_U
■In other situations
The Bluetooth
® connection sta-
tus is displayed at the top of the
screen each time the engine
switch is in ACC or ON.
Even though all conceivable
measures have been taken, the
symptom status does not
change.
For details, refer to the owner’s
manual that came with the cellular
phone.
Likely causeSolution
Connection con-
firmation display
on this system is
set to on.
To turn off the
display, set con-
nection confir-
mation display
on this system to
off. ( P.308)
Likely causeSolution
The cellular
phone is not
close enough to
this system.Bring the cellu-
lar phone closer
to this system.
Radio interfer-
ence has
occurred.
Turn off Wi-Fi®
devices or other
devices that may
emit radio
waves.
The cellular
phone is the
most likely cause
of the symptom.
Turn the cellular
phone off,
remove and rein-
stall the battery
pack, and then
restart the cellu-
lar phone.
Enable the cellu-
lar phone’s Blue-
tooth
®
connection.
Stop the cellular
phone’s security
software and
close all applica-
tions.
Before using an
application
installed on the
cellular phone,
carefully check
its source and
how its opera-
tion might affect
this system.
Likely causeSolution

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

4577-2. Maintenance
7
Maintenance and care
COROLLA_U
7-2.Maintenance
■Repair and replacement
It is recommended that genuine
Toyota parts be used for repairs to
ensure performanc e of each sys-
tem. If non-Toyota parts are used in
replacement or if a repair shop other
than a Toyota dealer performs
repairs, confirm the warranty cover-
age.
■Allow inspection and repairs to
be performed by a Toyota
dealer
●Toyota technicians are
well-trained specialists and are
kept up to date with the latest ser-
vice information. They are well
informed about the operation of all
systems on your vehicle.
●Keep a copy of the repair order. It
proves that the maintenance that
has been performed is under war-
ranty coverage. If any problem
should arise while your vehicle is
under warranty, your Toyota
dealer will promptly take care of it.
General maintenance should be
performed on a daily basis. This
can be done by yourself or by a
Toyota dealer.
Scheduled maintenance should
be performed at specified inter-
vals according to the mainte-
nance schedule.
For details about maintenance
items and schedules, refer to the
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”.
Maintenance require-
ments
To ensure safe and econom-
ical driving, day-to-day care
and regular maintenance
are essential. It is the
owner’s responsibility to
perform regular checks.
Toyota recommends the
maintenance below.
WA R N I N G
■If your vehicle is not properly
maintained
Improper maintenance could
result in serious damage to the
vehicle and possible death or seri-
ous injury.
■Handling of the battery
●Engine exhaust, some of its
constituents, and a wide variety
of automobile components con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects and
other reproductive harm. Work
in a well ventilated area.
●Oils, fuels and fluids contained
in vehicles as well as waste pro-
duced by component wear con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects or
other reproductive harm. Avoid
exposure and wash any
affected area immediately.
●Battery posts, terminals and
related accessories contain lead
and lead compounds which are
known to cause brain damage.
Wash your hands after han-
dling. ( P.472)
General maintenance
Scheduled maintenance

4587-2. Maintenance
COROLLA_U
■Resetting the message indicat-
ing maintenance is required
After the required maintenance is
performed according to the mainte-
nance schedule, please reset the
message.
To reset the messa ge, follow the
procedure described below:
1 Press or of the meter
control switch to select .
2 Press or to select “Vehi-
cle Settings” and then press and
hold .
3 Press or to select
“Scheduled Maintenance” and
then press .
4 Press or to select “Yes”
and then press .
A message will be displayed on the
multi-information display when the
reset procedure has been com-
pleted.
You can perform some mainte-
nance procedures by yourself.
Please be aware that do-it-your-
self maintenance may affect
warranty coverage.
The use of Toyota repair manuals is
recommended.
For details about warranty cover-
age, refer to the separate “Owner’s
Warranty Information Booklet” or
“Owner’s Manual Supplement”.
Do-it-yourself mainte-
nance
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.
WA R N I N G
■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.472)
Brake fluid
Is the brake fluid at
the correct level?
( P.471)
Engine coolant
Is the engine cool-
ant at the correct
level? ( P.470)
Engine oil
Is the engine oil at
the correct level?
( P.467)

4607-2. Maintenance
COROLLA_U
Parking brake
• Does the park-ing brake oper-
ate normally?
• When parked on a slope and the
parking brake is
on, is the vehicle
securely
stopped?
Seat belts
• Do the seat belts operate
smoothly?
• The seat belts should not be
damaged.
Seats
Do the seat con-
trols operate prop-
erly?
Steering wheel
• Does the steer-ing wheel rotate
smoothly?
• Does the steer- ing wheel have
the correct
amount of free
play?
• There should not be any strange
sounds coming
from the steer-
ing wheel.
Vehicle exterior
ItemsCheck points
Doors/trunkDo the doors/trunk
operate smoothly?
Engine hood
Does the engine
hood lock system
work properly?
ItemsCheck points
Fluid leaks
There should not
be any signs of
fluid leakage after
the vehicle has
been parked.
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 points

4677-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
2.0 L 4-cylinder (M20A-FKS) engineWasher fluid tank ( P.474)
Engine coolant reservoir ( P.470)
Fuse boxes ( P.492)
Engine oil filler cap ( P.468)
Engine oil level dipstick ( P.467)
Battery ( P.472)
Brake fluid reservoir ( P.471)
Radiator ( P.471)
Condenser ( P.471)
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
more than 5 minutes for the
oil to drain back into the bot-
tom of the engine.Checking and adding the
engine oil

4687-3. Do-it-yourself maintenance
COROLLA_U
2Holding a rag under the end,
pull the dipstick out.
1.8 L 4-cylinder (2ZR-FAE)
engine
2.0 L 4-cylinder (M20A-FKS)
engine
3 Wipe the dipstick clean.
4 Reinsert the dipstick fully.
5 Holding a rag under the end,
pull the dipstick out and
check the oil level.
Low Normal
Excessive
The shape of the dipstick may differ
depending on the type of vehicle or
engine.
6
Wipe the dipstick and reinsert
it fully.
■Checking the oil type and
preparing the item needed
Make sure to check the oil type
and prepare the items needed
before adding oil.
 Engine oil selection
P.558, 559
 Oil quantity (Low  Full)
1.6 qt. (1.5 L, 1.3 Imp. qt.)
 Item
Clean funnel
■Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
1.8 L 4-cylinder (2ZR-FAE)
engine

4697-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
2.0 L 4-cylinder (M20A-FKS)
engine
1 Remove the oil filler cap by
turning it counterclockwise.
2 Add engine oil slowly, check-
ing the dipstick.
3 Install the oil filler cap by
turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will
be consumed while driving. In the
following situatio ns, oil consump-
tion may increase, and engine oil
may need to be refilled in between
oil maintenance intervals.
●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
WA R N I N G
■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 o il and filters
only in a safe and acceptable
manner. Do not dispose of used
oil and filters in h ousehold 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 reach of children.
NOTICE
■To prevent serious engine
damage
Check the oil le vel 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 engin e oil filler cap
is properly tightened.