warning TOYOTA COROLLA 2021 (in English) Manual PDF

4867-3. Do-it-yourself maintenance
COROLLA_U
When replacing wheels, care
should be taken to ensure that
they are equivalent to those
removed in load capacity, diam-
eter, rim width and inset
*.
Replacement wheels are avail-
able at your Toyota dealer.
*: Conventionally referred to as off- set.
Toyota does not recommend
using the following:
 Wheels of different sizes or
types
 Used wheels
 Bent wheels that have been
straightened
■When replacing wheels (vehi-
cles with a tire pressure warn-
ing system)
The wheels of your vehicle are
equipped with tire pressure warning
valves and transmit ters that allow
the tire pressure warning system to
provide advance warning in the
event of a loss in tire inflation pres-
sure. Whenever wheels are
replaced, the tire pressure warning
valves and transmitters must be
installed. ( P.480)
Wheels
If a wheel is bent, cracked or
heavily corroded, it should
be replaced. Otherwise, the
tire may separate from the
wheel or cause a loss of
handling control.
Wheel selection
WA R N I N G
■When replacing wheels
●Do not use wheels that are a dif-
ferent size from those recom-
mended in the Owner’s Manual,
as this may result in a loss of
handling control.
●Never use an inner tube in a
leaking wheel which is designed
for a tubeless tire.
Doing so may result in an acci-
dent, causing death or serious
injury.
■When installing the wheel
nuts
●Be sure to install the wheel nuts
with the tapered ends facing
inward.(P.539) Installing the
nuts with the tapered ends fac-
ing outward can cause the
wheel to break and eventually
cause the wheel to come off
while driving, wh ich could lead
to an accident resulting in death
or serious injury.
●Never use oil or grease on the
wheel bolts or wheel nuts.
Oil and grease may cause the
wheel nuts to be excessively
tightened, leading to bolt or disc
wheel damage. In addition, the
oil or grease can cause the
wheel nuts to loosen and the
wheel may fall off, causing an
accident and resulting in death
or serious injury. Remove any
oil or grease fr om the wheel
bolts or wheel nuts.
■Use of defective wheels pro-
hibited
Do not use cracke d or deformed
wheels. Doing so could cause the
tire to leak air during driving, pos-
sibly causing an accident.

4877-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Use only Toyota wheel nuts
and wheel nut wrenches
designed for use with your
aluminum wheels.
 When rotating, repairing or
changing your tires, check
that the wheel nuts are still
tight after driving 1000 miles
(1600 km).
 Be careful not to damage the
aluminum wheels when using
tire chains.
 Use only Toyota genuine bal-
ance weights or equivalent
and a plastic or rubber ham-
mer when balancing your
wheels. 1
Turn the engine switch off.
2 Open the glove box. Slide off
the damper (if equipped).
3 Push in the glove box on the
vehicle’s outer side to discon-
nect the claws. Then pull out
the glove box and disconnect
the lower claws.
4 Unlock the filter cover ( ),
pull the filter cover out of the
NOTICE
■Replacing tire pressure warn-
ing valves and transmitters
(vehicles with a tire pressure
warning system)
●Because tire repair or replace-
ment may affect the tire pres-
sure warning valves and
transmitters, make sure to have
tires serviced by your Toyota
dealer or other qualified service
shop. In addition, make sure to
purchase your tire pressure
warning valves and transmit-
ters at your Toyota dealer.
●Ensure that only genuine Toyota
wheels are used on your vehi-
cle.
Tire pressure warning valves
and transmitters may not work
properly with non-genuine
wheels.
Aluminum wheel precau-
tions (if equipped)
Air conditioning filter
The air conditioning filter
must be changed regularly
to maintain air conditioning
efficiency.
Removing the air condi-
tioning filter

501
8
8
When trouble arises
COROLLA_U
When trouble arises
.8-1. Essential informationEmergency flashers .... 502
If your vehicle has to be stopped in an emergency.................................. 502
If the vehicle is trapped in rising water ................ 504
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 505
If you think something is wrong ........................ 509
Fuel pump shut off system .................................. 510
If a warning light turns on or a warning buzzer sounds.................................. 511
If a warning message is dis- played........................ 521
If you have a flat tire (vehi- cles without spare tire).................................. 523
If you have a flat tire (vehi- cles with a spare tire)
.................................. 534
If the engine will not start .................................. 542
If you lose your keys ... 544
If the electronic key does not operate properly .. 544
If the vehicle battery is dis- charged ..................... 546If your vehicle overheats
.................................. 550
If the vehicle becomes stuck .................................. 553

5118-2. Steps to take in an emergency
8
When trouble arises
COROLLA_U
■Brake system warning light (warning buzzer)
■Brake system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
If a war ning light tur ns on or a war ning buzzer
sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunction
in the system. However, if this continues to occur, have the
vehicle inspected by your Toyota dealer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(U.S.A.)
or
(Red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction i n the parking brake system
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates that the engine c oolant temperature is exces-
sively high
 Immediately stop the vehicle in a safe place.
Handling method ( P.550)

5128-2. Steps to take in an emergency
COROLLA_U
■Charging system warning light
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
■Malfunction indicator lamp (warning buzzer)
■SRS warning light (warning buzzer)
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
Indicates that the engine oil pressure is excessively low
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The electronic engine control system;
 The electronic throttle control system; or
 The electronic continuously variable transmission control
system (if equipped)
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
Indicates a malfunction in:
The SRS airb ag system;
 The front passenger occupan t classification system; or
 The seat belt pretensioner system
 Have the vehicle inspected by your Toyota dealer
immediately.

5138-2. Steps to take in an emergency
8
When trouble arises
COROLLA_U
■ABS warning light
■Brake Override System warning light/Drive-Start Control
warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The ABS; or
 The brake assist system
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
When a buzzer sounds:
Indicates a malfunction in:
The Brake Override System; or
 The Drive-Start Control (if equipped)
 Have the vehicle inspected by your Toyota dealer
immediately.
Indicates that the shift position was changed and
Drive-Start Control (if equ ipped) was operated while
depressing the accelerator pedal.
 Momentarily release the accelerator pedal.
When a buzzer does not sound:
Indicates that the accelerator and brake pedals are being
depressed simultaneously, and the Brake Override System
is operating.
 Release the accelerator pedal and depress the brake
pedal.

5148-2. Steps to take in an emergency
COROLLA_U
■Electric power steering system warning light (warning
buzzer)
■Low fuel level warning light
■Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)*
*: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the driver that his or
her seat belt is not fastened. O nce the engine switch is turned to ON, the
buzzer sounds. If the seat belt is still un fastened, the buzzer sounds inter-
mittently for a certain period of time after the vehicle reache s a certain
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt w arning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the seat belt is unfas-
tened, the buzzer sounds intermittently for a certain period of time after the
vehicle reaches a certain speed.
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunction in th e EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates that remaining fuel is approximately 2 gal. (7.5 L,
1.6 Imp. gal.) or less
 Refuel the vehicle.
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat
belts
Fasten the seat belt.
If the front passenger’s se at is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (w arning buzzer) turn off.

5158-2. Steps to take in an emergency
8
When trouble arises
COROLLA_U
■Rear passengers’ seat belt reminder lights (warning buzzer)*
*: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning buzzer sounds to alert t he rear pas-
senger that his or he r seat belt is not fastened. If the seat b elt is unfas-
tened, the buzzer sounds intermittently for a certain period of time, after the
seat belt is fastened and unfast ened and the vehicle reaches a certain
speed.
■Tire pressure warning light
■LTA indicator/LDA indicator (warning buzzer)
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.
Warning lightDetails/Actions
(if equipped)
When the light comes on after blinking for approximately 1
minute:
Malfunction in the tire pressure warning system
Have the system checked by your Toyota dealer.
When the light comes on:
Low tire inflation pressure such as
 Natural causes
 Flat tire
 Immediately stop the vehicle in a safe place.
Handling method ( P.518)
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in the LTA (Lane Tracing Assist) or
LDA (Lane Departure Aler t with steering control)
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.220, 228)

5168-2. Steps to take in an emergency
COROLLA_U
■RCTA OFF indicator (warning buzzer)
■PCS warning light
■Slip indicator
Warning lightDetails/Actions
(Flashes)
(if equipped)
Indicates a malfunction in the RCTA (Rear Cross Traffic
Alert) function
 Have the vehicle inspected by your Toyota dealer
immediately.
Indicates that the re ar bumper around the radar sensor is
covered with dirt, etc. ( P.255)
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.259)
Warning lightDetails/Actions
(Flashes or illu-
minates)
When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Colli-
sion System).
Have the vehicle inspected by your Toyota dealer
immediately.
If a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily
unavailable, corrective action may be necessary.
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.201)
If the PCS (Pre-Collision Syst em) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 2 1 0
Warning lightDetails/Actions
Indicates a malfunction in:
The VSC system;
 The TRAC system; or
 The hill-start assist control system
 Have the vehicle inspected by your Toyota dealer
immediately.

5178-2. Steps to take in an emergency
8
When trouble arises
COROLLA_U
■Parking brake indicator
■Brake hold operated indicator
■iMT indicator
■Warning buzzer
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.
■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may n ot detect a pas- senger, and the warning light may
not operate properly.
■Operation of rear passengers’
seat belt reminder lights
●The rear passengers’ seat belt
reminder lights w
ill illuminate for
approximately 60 seconds after
either rear door has been opened
and closed.
●If any rear seat belt is fastened
and then unfastened, the corre-
sponding light for that seat will illu-
minate continuously . If either rear
door is opened and closed while a
rear passengers’ seat belt light is
illuminated, it will tu rn off approxi-
mately 60 seconds after the door
Warning lightDetails/Actions
(Flashes)
(U.S.A.)
or
(Flashes)
(Canada)
It is possible that the parking brake is not fully engaged or
released
 Operate the parking brake once again.
This light comes on when the parking brake is not released.
If the light turns of f after the parking brake is fully release d,
the system is operating normally.
Warning lightDetails/Actions
(Flashes)
(if equipped)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Orange)
(if equipped)
Indicates a malfunction in the iMT
 Have the vehicle inspected by your Toyota dealer
immediately.