warning lights TOYOTA COROLLA HYBRID 2021 (in English) User Guide

962-1. Instrument cluster
COROLLA HV_UThere may be a malfunction in a
system if the lights do not come
on, or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the
multi-information display.
The indicators inform the driver
of the operating state of the
vehicle’s various systems.
WA R N I N G
■If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
hybrid system, th is could mean
that these systems are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by your Toyota dealer
immediately if this occurs.
Indicators
Turn signal indicator
(  P.166)
(U.S.A.)
Headlight indicator
( P.173)
(Canada)
Tail light indicator
( P.173)
Headlight high beam indi-
cator ( P.175)
Automatic High Beam
indicator ( P.175)
PCS warning light
*1, 2
(  P.191)
Cruise control indicator
(  P.207)
Dynamic radar cruise con-
trol indicator ( P.207)
Cruise control “SET” indi-
cator ( P.207)
*3
LTA i n d i c a t o r ( P.202)
BSM outside rear view
mirror indicators
*4, 5 (if
equipped) (P.221)
BSM indicator (if
equipped) (P.221)
RCTA OFF indicator
*1, 2
(if equipped) ( P.226)
(Flashes)
Slip indicator*1 ( P.241)
VSC OFF indicator
*1, 2
(  P.241)
Smart key system indica-
tor
*6 (  P.157)
“READY” indicator
(  P.157)
EV drive mode indicator
(  P.162)
(U.S.A.)
Parking brake indicator
( P.167)
(Canada)
Parking brake indicator
( P.167)
Brake hold standby indi-
cator
*1 (  P.170)
Brake hold operated indi-
cator
*1 (  P.170)
EV indicator ( P.81)
Low outside temperature
indicator
*7 (  P. 9 8 )
Security indicator ( P. 8 8 ,
90)

2004-5. Using the driving support systems
COROLLA HV_U
■Lane departure alert func-
tion
When the system determines
that the vehicle might depart
from its lane or course
*, a warn- ing is displayed on the
multi-information display, and a
warning buzzer will sound to
alert the driver.
When the warning buzzer sounds,
check the area around your vehicle
and carefully operate the steering
wheel to move the vehicle back to
the center of the lane.
Vehicle with BSM: When the sys-
tem determines that the vehicle
might depart from its lane and that
the possibility of a collision with an
overtaking vehicle in the adjacent
lane is high, the lane departure
alert will operate even if the turn
signals are operating.
*: Boundary between asphalt and
the side of the road, such as
grass, soil, or a curb
■Steering assist function
When the system determines
that the vehicle might depart
from its lane or course
*, the sys-
WA R N I N G
●The traffic lane is excessively
narrow or wide.
●The vehicle is extremely tilted
due to carrying heavy luggage
or having improper tire pres-
sure.
●The distance to the preceding
vehicle is extremely short.
●The vehicle is moving up and
down a large amount due to
road conditions during driving
(poor roads or road seams).
●When driving in a tunnel or at
night with the headlights off or
when a headlight is dim due to
its lens being dirty or it being
misaligned.
●The vehicle is struck by a cross-
wind.
●The vehicle is affected by wind
from a vehicle driven in a
nearby lane.
●The vehicle has just changed
lanes or crossed an intersec-
tion.
●Tires which differ by structure,
manufacturer, b rand or tread
pattern are used.
●Snow tires, etc. are equipped.
●The vehicle is being driven at
extremely high speeds.
Functions included in LTA
system

2104-5. Using the driving support systems
COROLLA HV_U
This mode employs a radar to detect the presence of vehicles up to
approximately 328 ft. (100 m) ahead, determines the current vehi-
cle-to-vehicle following distance, and operates to maintain a s uitable
following distance from the vehicle ahead. The desired vehi-
cle-to-vehicle distance can also be set by operating the vehi-
cle-to-vehicle distance switch.
When driving on downhill slopes, t he vehicle-to-vehicle distance may
become shorter.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver.
Example of deceleration crui sing and follow-up cruising
When a preceding vehicle driving slower than the set speed
appears
When a vehicle is detected runni ng ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle s peed is nec-
essary, the system applies the brakes (the stop lights will come on at this
time). The system will respond to changes in the speed of the vehicle
ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach warning warns you when the system cannot decelerate suffi-
ciently to prevent your vehicle from closing in on the vehicle ahead.
When the vehicle ahead of you st ops, your vehicle will also stop (vehicle is
stopped by system control). Afte r the vehicle ahead starts off, pressing the
“+RES” switch or depressing the accelerator pedal (start-off operation) will
resume follow-up cruising. If the start-off operation is not pe rformed, system
control continues to keep your vehicle stopped.
Driving in vehicle-to-vehicle distance control mode

2414-5. Using the driving support systems
COROLLA HV_U
4
Driving
■The Secondary Collision
Brake
When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle
speed and help reduce the pos-
sibility of further damage due to
a secondary collision.
■When the TRAC/VSC/ABS sys-
tems are operating
The slip indicator light will flash
while the TRAC/VSC/ABS systems
are operating.
■Disabling the TRAC system
If the vehicle gets stuck in mud, dirt
or snow, the TRAC system may
reduce power from the hybrid sys-
tem to the wheels. Pressing to
turn the system off may make it eas-
ier for you to rock the vehicle in
order to free it.
To turn the TRAC system off, quickly
press and release .
The “Traction Control Turned OFF”
will be shown on the multi-informa-
tion display.
Press again to turn the system
back on.
■Turning off both TRAC and VSC
systems
To turn the TRAC and VSC systems
off, press and hold for more
than 3 seconds while the vehicle is
stopped.
The VSC OFF indicator light will
come on and the “Traction Control
Turned OFF” will be shown on the
multi-information display.
*
Press again to turn the system
back on.
*: PCS will also be disabled (only
Pre-Collision warning is avail-
able). The PCS warning light will
come on and a message will be
displayed on the multi-information
display. ( P.196)
■When the message is dis-
played on the multi-information
display showing that TRAC has
been disabled even if has
not been pressed
TRAC is temporary deactivated. If
the information continues to show,
contact your Toyota dealer.
■Operating conditions of
hill-start assist control
When the following four conditions
are met, the hill-star t assist control
will operate:
●The shift lever is in a position
other than P or N (when starting
off forward/backward on an
upward incline)

4788-2. Steps to take in an emergency
COROLLA HV_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 in:
The regenerative braking system;
 The electronically contr olled brake system; or
 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.517)

4828-2. Steps to take in an emergency
COROLLA HV_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 (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.485)
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in the LTA (Lane Tracing Assist)
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.206)

4848-2. Steps to take in an emergency
COROLLA HV_U
■Parking brake indicator
■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 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
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 2 )
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficient or the voltage
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 switch 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)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Toyota dealer
immediately.

4858-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises
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 (vehicles with a
tire pressure warning system)
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.490, 501
If none of the tires are punctured:
Turn the power switch off then turn it
to ON. Check if the tire pressure
warning light comes on or blinks.
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.447)
■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 tran
smitter. 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. Replac e 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.444
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.

568Alphabetical Index
COROLLA HV_U
B
Back-up lights Replacing light bulbs ............ 466
Wattage ................................ 530
Battery (12-volt battery) Battery checking................... 439
If the 12-volt battery is dis-charged .............................. 513
Preparing and c hecking before
winter.................................. 247
Warning light ........................ 479
Battery (traction battery) ......... 83
Blind Spot Monitor (BSM) ...... 221
Bluetooth
® audio .................... 315
Registering/Conn ecting a Blue-
tooth
® device...................... 317
Bluetooth® button (Setup
screen) .................................. 258
Bluetooth
® details settings ... 272
Bluetooth® setup screen ...... 273
Connecting a Bluetooth® device
........................................... 273
Deleting a Bluetooth
® device275
Detailed settings screen ....... 277
Displaying the Bluetooth
® setup
screen ................................ 272
Editing the Bluetooth
® device
information ......................... 276
Registering a Bluetooth
® device
........................................... 275
Bluetooth
® device information
............................................... 276
Bluetooth
® hands-free system
............................................... 343
Bluetooth
® phone message func-
tion......................................... 354 Calling the message sender. 357
Checking received messages ........................................... 355
Displaying the message screen ........................................... 354 Receiving a mess
age ...........354
Replying to a message (dicta- tion reply)............................356
Replying to a message (quick reply) ..................................356
Bottle holders .........................398
Brake Brake hold ............................170
Fluid..............................438, 528
Parking brake .......................167
Regenerative braking .............81
Warning light.........................478
Brake assist ............................240
Break-in tips ............................147
Brightness control Instrument panel light control101
BSM (Blind Spot Monitor) ......221
C
Care Exterior .................................420
Interior ..................................422
Seat belts .............................422
Wheels and wheel ornaments...........................................420
Cargo capacity ........................155
Chains......................................248
Child restraint system Fixed with a LATCH system ...64
Fixed with a seat belt..............59
Front passenger occupant clas-sification system ...................41
Points to remember ................48
Riding with children ................47
Types of child restraint system installation method ...............50
Using an anchor bracket ........68
Child safety 12-volt battery precautions .439, 516
Airbag precautions .................36
Child restraint system .............50

571Alphabetical Index
COROLLA HV_U
Engine switch (power switch)157 If your vehicle has to be stopped in an emergency................. 471
Enhanced VSC ........................ 240
Entering letters and num- bers/list screen operation ... 263Entering letters and numbers263
List screen ............................ 264
EPS (Electric Power Steering) ............................................... 240Warning light ........................ 481
Establishing an Android Auto connection ............................ 285
Establishing an Apple CarPlay connection ............................ 284
EV drive mode ........................ 162
EV indicator .............................. 81
Event data recorder (EDR)......... 8
F
Flat tire Tire pressure warning system........................................... 443
Vehicles with a spare tire ..... 501
Vehicles without a spare tire 490
Floor mats ................................. 24
Fluid Brake .................................... 528
Hybrid transmission.............. 528
Washer ................................. 440
FM ............................................ 303
Front passenger occupant clas- sification system .................... 41
Front seats Adjustment ........................... 133
Cleaning ............................... 422
Correct driving posture ........... 25
Head restraints ..................... 136
Seat heaters ......................... 393
Front side marker lights Light switch .......................... 173
Replacing light bulbs ............ 464 Wattage ................................530
Front turn signal lights Replacing light bulbs ............464
Turn signal lever ...................166
Fuel Capacity ...............................525
Fuel gauge .............................98
Information ......... ..................531
Refueling ..............................180
Type......................................525
Warning light.........................481
Fuel consumption Average fuel economy ..........104
Current fuel consumption .....104
Fuel economy .........................104
Fuel filler door If the fuel filler door cannot be opened ............................... 511
Refueling ..............................180
Fuel gauge.................................98
Functional overview ...............372
Fuses .......................................461
G
Garage door opene r ............... 411
Gauges ......................................98
General button (Setup screen) .......................................258, 291
General settings .....................291 Displaying the general settings screen.................................291
General settings screen .......291
Glove box ................................398
H
Hands-free system .................343
Head restraints .......................136
Headlights Automatic High Beam system...........................................175
Light switch...........................173