warning light TOYOTA COROLLA HYBRID 2020 (in English) Service Manual

4568-2. Steps to take in an emergency
COROLLA HV_U
■Brake hold operated 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 re minder lights
●The rear passengers’ seat belt
reminder lights will illuminate for
approximately 60 seconds after
either rear door has been opened
and closed.
●If any rear seat be lt 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
is closed.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat belt buckle switch, front
passenger occupan
t classification
system (ECU and sensors), “AIR
BAG ON” indicator light, “AIR BAG
OFF” indicator light, seat belt pre-
tensioners, airbags, interconnecting
wiring and power sources. ( P. 3 1 )
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel ta nk cap loose?
If it is, tighten it securely.
The light will go off after several
driving trips.
If the light does not go off even after
several trips, con tact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficient or the voltage
temporarily drops, the electric power
steering system warning light may
come on and the warning buzzer
may sound.
■When the tire pressure warning
light comes on (ve hicles with a
tire pressure warning system)
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.462, 473
If none of the tires are punctured:
Turn the power switch off then turn it
to ON. Check if th e tire pressure
warning light com es on or blinks.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
Have the vehicle inspected by your Toyota dealer
immediately.

4578-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises
If the tire pressure warning light
blinks for approxi mately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your Toyota
dealer immediately.
If the tire pressure warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.419)
■The tire pressure warning light
may come on due to natural
causes (vehicles with a tire
pressure warning system)
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (afte r a few minutes).
■When a tire is replaced with a
spare tire (vehicl es with a tire
pressure warning system)
Vehicles with a compact spare tire:
The compact spare tire is not
equipped with a tire pressure warn-
ing valve and transmitter. If a tire
goes flat, the tire pressure warning
light will not turn off even though the
flat tire has been replaced with the
spare tire. Replace the spare tire
with the repaired tire and adjust the
tire inflation pressure. The tire pres-
sure warning light will go off after a
few minutes.
■Conditions that the tire pres-
sure warning system may not
function properly (vehicles with
a tire pressure warning system)
 P.416
WA R N I N G
■If both the ABS and the brake
system warning lights remain
on
Stop your vehicle in a safe place
immediately and contact your Toy-
ota dealer.
The vehicle will become
extremely unstable during brak-
ing, and the ABS system may fail,
which could cause an accident
resulting in death o r serious injury.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assis t to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
When steering wheel operations
are heavier than usual, grip the
steering wheel firmly and operate
it using more fo rce than usual.
■If the tire pressure warning
light comes on ( vehicles with
a tire pressure warning sys-
tem)
Be sure to observe the following
precautions.
Failure to do so could cause a
loss of vehicle control and result
in death or serious injury.
●Stop your vehicle in a safe place
as soon as possible. Adjust the
tire inflation pressure immedi-
ately.

4588-2. Steps to take in an emergency
COROLLA HV_U
WA R N I N G
●Vehicles with a compact spare
tire: If the tire pressure warning
light comes on ev en after tire
inflation pressure adjustment, it
is probable that you have a flat
tire. Check the ti res. If a tire is
flat, change it with the spare tire
and have the flat tire repaired by
the nearest Toy ota dealer.
●Vehicles with emergency tire
puncture repair kit: If the tire
pressure warning light comes
on even after tire inflation pres-
sure adjustment, it is probable
that you have a flat tire. Check
the tires. If a tire is flat, repair
the flat tire by using emergency
tire puncture repair kit.
●Avoid abrupt maneuvering and
braking.
If the vehicle tires deteriorate,
you could lose control of the
steering wheel or the brakes.
■If a blowout or sudden air
leakage should occur (vehi-
cles with a tire pressure warn-
ing system)
The tire pressure warning system
may not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer on the vehicle placard or tire
inflation pressure label (tire and
load information label). (If your
vehicle has tires of a different size
than the size indicated on the
vehicle placard or tire inflation
pressure label [tire and load infor-
mation label], you should deter-
mine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS-tire pressure warning sys-
tem) that illuminates a low tire
pressure telltale (tire pressure
warning light) w hen one or more
of your tires is significantly
under-inflated. Accordingly, when
the low tire pressure telltale (tire
pressure warning light) illumi-
nates, you should stop and check
your tires as soon as possible,
and inflate them to the proper
pressure. Driving on a signifi-
cantly under-inflat ed tire causes
the tire to overhea t and can lead
to tire failure. Under-inflation also
reduces fuel efficiency and tire
tread life, and may affect the vehi-
cle’s handling and stopping ability.
Please note that the TPMS (tire
pressure warning system) is not a
substitute for proper tire mainte-
nance, and it is the driver’s
responsibility to m aintain correct
tire pressure, even if under-infla-
tion has not reached the level to
trigger illuminati on of the TPMS
low tire pressure te lltale (tire pres-
sure warning light).
Your vehicle has also been
equipped with a TPMS (tire pres-
sure warning system) malfunc-
tion indicator to indicate when the
system is not operating properly.
The TPMS (tire pressure warning
system) malfunction indicator is
combined with the low tire pres-
sure telltale (tire pressure warning
light). When the system detects a
malfunction, the te lltale will flash
for approximately one minute and
then remain continuously illumi-
nated. This sequence will con-
tinue upon subsequent vehicle
start-ups as long as the malfunc-
tion exists. When the malfunction
indicator is illu minated, the sys-
tem may not be ab le to detect or
signal low tire pressure as
intended.

4598-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises■Warning messages
The warning messages explained
below may differ from the actual
messages according to operation
conditions and vehicle specifica-
tions.
■Warning buzzer
A buzzer may sound when a mes-
sage is displayed.
The buzzer may not be audible if the
vehicle is in a noisy location or if the
audio system volume is high.
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check
WA R N I N G
TPMS (tire pressure warning sys-
tem) malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS
(tire pressure warning system)
from functioning properly. Always
check the TPMS (tire pressure
warning system) malfunction tell-
tale after replacing one or more
tires or wheels on your vehicle to
ensure that the r eplacement or
alternate tires and wheels allow
the TPMS (tire pressure warning
system) to continue to function
properly.
NOTICE
■To ensure the tire pressure
warning system operates
properly (vehicles with a tire
pressure warning system)
Do not install tires with different
specifications or makers, as the
tire pressure warning system may
not operate properly.
If a war ning message
is displayed
The multi-information dis-
play shows warnings for
system malfunctions and
incorrectly performed oper-
ations, and messages that
indicate a need for mainte-
nance. When a message is
displayed, perform the
appropriate corrective
action for the message.
If a warning message is dis-
played again after the
appropriate actions have
been performed, contact
your Toyota dealer.
Additionally, if a warning
light comes on or flashes at
the same time that a warn-
ing message is displayed,
take the appropriate correc-
tive action for the warning
light. ( P.450)

4708-2. Steps to take in an emergency
COROLLA HV_U
23.
22 Turn the compressor switch
on to inflate the tire until the
specified air pressure is
reached. Drive for about 3
miles (5 km) and then per-
form step 20.
23 Attach the air release cap to
the end of the hose.
If the air release cap is not
attached, the sealant may leak and
the vehicle ma y get dirty.
24Store the bottle in the trunk
while it is connected to the
compressor.
25 Taking precautions to avoid
sudden braking, sudden
acceleration and sharp turns,
drive carefully at under 50
mph (80 km/h) to the nearest
Toyota dealer that is less
than 62 miles (100 km) away
for tire repair or replacement.
When having the tire repaired or
replaced, make sure to tell the Toy-
ota dealer that the sealant is
injected.
■If the tire is i nflated to more
than the specified air pressure
1 Disconnect the hose from the
valve. 2
Install the air release cap to the
end of the hose and push the
protrusion on the air release cap
into the tire valve to let some air
out.
3 Disconnect the hose from the
valve, remove the air release cap
from the hose an d then recon-
nect the hose.
4 Turn the compressor switch on
and wait for seve ral seconds,
and then turn it off. Check that
the air pressure indicator shows
the specified air pressure.
(  P.501)
If the air pressure is under the des-
ignated pressure, turn the compres-
sor switch on again and repeat the
inflation procedure until the speci-
fied air pressure is reached.
■The valve of a tire that has been
repaired (vehicles without a tire
pressure warning system)
After a tire is repaired with the emer-
gency tire puncture repair kit, the
valve should be replaced.
■After a tire is re paired with the
emergency tire puncture repair
kit (vehicles with a tire pressure
warning system)
●The tire pressure warning valve
and transmitter should be
replaced.
●Even if the tire inflation pressure is
at the recommended level, the tire
pressure warning light may come
on/flash.

4798-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises
the compact spare tire after the tire
pressure warning light comes on,
the light remains on.
■If you have a flat front tire on a
road covered with snow or ice
Install the compact spare tire on one
of the rear wheels of the vehicle.
Perform the following steps and fit
tire chains to the front tires:
1 Replace a rear tire with the com-
pact spare tire.
2 Replace the flat front tire with the
tire removed from the rear of the
vehicle.
3 Fit tire chains to the front tires.
■When reinstalling the wheel
ornament (except compact
spare tire)
Align the cutout o f the wheel orna-
ment with the valve stem as shown
in the illustration.
WA R N I N G
■When using the compact
spare tire
●Remember that the compact
spare tire provided is specifi-
cally designed for use with your
vehicle. Do not use your com-
pact spare tire on another vehi-
cle.
●Do not use more than one com-
pact spare tires simultaneously.
●Replace the compact spare tire
with a standard tire as soon as
possible.
●Avoid sudden acceleration,
abrupt steering, sudden brak-
ing and shifting operations that
cause sudden engine braking.
■When the compact spare tire
is attached
The vehicle speed may not be
correctly detected, and the follow-
ing systems may not operate cor-
rectly:
• ABS & Brake assist
• VSC
•TRAC
• Automatic High Beam
• Dynamic radar cruise control with full-speed range
• EPS
• PCS (Pre-Collision System)
• LTA (Lane Tracing Assist)
• Tire pressure warning system (if equipped)
• BSM (Blind Spot Monitor) (if equipped)
• Rear view monitor system
■Speed limit when using the
compact spare tire
Do not drive at speeds in excess
of 50 mph (80 km /h) when a com-
pact spare tire is installed on the
vehicle.
The compact spare tire is not
designed for driving at high
speeds. Failure to observe this
precaution may lead to an acci-
dent causing death or serious
injury.

5019-1. Specifications
COROLLA HV_U
9
Vehicle specifications
N, 30.6 kgf) while the hyb rid system is operating.
*2: Make sure to confirm that the brake system warning light (yell ow) does
not illuminate. (If th e brake system warning light illuminates, refer to
P.450.)
Ty p e A
Ty p e B
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size195/65R15 91S, T125/70D17 98M
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front
38 psi (260 kPa, 2.6 kgf/cm
2 or bar)
Rear
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Spare
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size15  6 1/2J, 17  4T (compact spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size195/65R15 91S
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front
38 psi (260 kPa, 2.6 kgf/cm
2 or bar)
Rear
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Spare
None
Wheel size15  6 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

5371-1. What to do if... (Troubleshooting)
COROLLA HV_U537What to do if... (Troubleshooting)
 Is the power switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON. ( 
P.150)
It is locked automatically to
prevent theft of the vehicle.
( P.144)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( 
P.129)
The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
hybrid system is not operat-
ing) for a period of time.
( P.146)
 The seat belt reminder light is flashing
Are the driver and the passenger
wearing the seat belts? (

P. 4 5 3)
The parking brake indicator is
on
Is the parking br ake released?
( 
P.153)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.450, 459)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( 
P. 7 7)
Do one of the following to deac-
tivate or stop the alarms:
Unlock the doors.
 Turn the power switch to ACC
or ON, or start the hybrid sys-
tem. (The alarm will be deacti-
vated or stopped after a few
seconds.)
 Is the electronic key left inside
the vehicle?
Check the message on the
multi-informat ion display. (
P.459)
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The steering wheel can-
not be turned after the
hybrid system is stopped
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds
A warning buzzer sounds
when leaving the vehicle

538What to do if... (Troubleshooting)
COROLLA HV_U
 When a warning light turns on
or a warning message is dis-
played, refer to P.450, 459.
 Vehicles with an emergency
tire puncture repair kit: Stop
the vehicle in a safe place and
repair the flat tire temporarily
with the emergency tire punc-
ture repair kit. ( P.462)
 Vehicles with a spare tire:
Stop the vehicle in a safe
place and replace the flat tire
with the spare tire. ( P.473)
 Try the procedure for when
the vehicle becomes stuck in
mud, dirt, or snow. ( P.492)
A warning light turns on
or a warning message is
displayed
When a problem has
occurred
If you have a flat tire
The vehicle becomes
stuck

5391-1. What to do if... (Troubleshooting)
COROLLA HV_U539Alphabetical Index
Alphabetical Index
A
A/C Air conditioning filter ............. 426
Automatic air conditioning sys-tem ..................................... 358
ABS (Anti-lock Brake System) ............................................... 220Warning light ........................ 452
ACA (Active Cornering Assist) ............................................... 221
Active Cornering Assist (ACA) ............................................... 221
Air conditioning filter ............. 426
Air conditioning system Air conditioning filter ............. 426
Automatic air conditioning sys-tem ..................................... 358
Airbags Airbag operating conditions.... 33
Airbag precautions for your child............................................. 36
Correct driving posture ........... 25
Curtain shield airbag operating conditions ............................. 34
Curtain shield airbag precautions ............................................. 36
Front passenger occupant clas- sification system ................... 40
General airbag precautions .... 36
Locations of airbags ............... 31
Modification and disposal of air- bags ..................................... 39
Side airbag operating conditions ............................................. 34
Side airbag precautions ......... 36
Side and curtain shield airbags operating conditions ............. 34
Side and curtain shield airbags precautions........................... 36
SRS airbags ........................... 31
SRS warning light................. 452 Alarm
Alarm ......................................77
Warning buzzer ....................450
AM ............................................279
Anchor brackets ... ..............49, 59
Antennas (smart key system) 111
Anti-lock Brake System (ABS) ...............................................220Warning light.........................452
Apple CarPlay .................264, 265
Approach warning ..................198
Apps button (Menu screen) ...235
Armrest ......... ......................... ..382
Assist grips .............................382
Audio .......................................274 Audio source ........................275
Operating information ...........296
Reordering the audio source 275
Screen adjustment ...............277
Some basics .........................275
Sound settings......................276
Turning the sys tem on and off
...........................................275
USB/AUX port ......................276
Voice command system .......278
AUDIO button ..........................233
Audio button (Menu screen) ..235
Audio settings.........................295 Common settings .................295
Radio settings.......................295
Audio source...........................275
Audio system-linked display ...93
Automatic air conditioning sys- tem .........................................358
Automatic High Beam ............160
Automatic light control system ...............................................159
AUX ..........................................291
Average fuel economy .............90
Average vehicle speed .............93