sensor TOYOTA COROLLA 2021 (in English) Service Manual

2754-5. Using the driving support systems
4
Driving
COROLLA_Uoff. The EPS syst
em should return
to normal within 10 minutes.
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor de tects a collision
while the vehicle is in motion.
However, the system does not oper-
ate in any of the following situations.
●The vehicle speed is below 6 mph
(10 km/h)
●Components are damaged
■Secondary Collision Brake
automatic cancellation
The system is automatically can-
celed in any of th e following situa-
tions.
●The vehicle speed drops below
approximately 6 mph (10 km/h)
●A certain amount o f time elapses
during operation
●The accelerator pedal is
depressed a large amount
WA R N I N G
■The ABS does not operate
effectively when
●The limits of tire gripping perfor-
mance have been exceeded
(such as excessively worn tires
on a snow covered road).
●The vehicle hydroplanes while
driving at high speed on wet or
slick roads.
■Stopping distance when the
ABS is operating may exceed
that of normal conditions
The ABS is not designed to
shorten the vehicle’s stopping dis-
tance. Always maintain a safe dis-
tance from the vehicle in front of
you, especially in the following sit-
uations:
●When driving on d irt, gravel or
snow-covered roads
●When driving with tire chains
●When driving over bumps in the
road
●When driving over roads with
potholes or uneven surfaces
■TRAC/VSC may not operate
effectively when
Directional control and power may
not be achievable while driving on
slippery road surfaces, even if the
TRAC/VSC system is operating.
Drive the vehicle carefully in con-
ditions where stability and power
may be lost.
■Active Cornering Assist does
not operate effectively when
●Do not overly rely on Active
Cornering Assist. Active Corner-
ing Assist may not operate
effectively when accelerating
down slopes or driving on slip-
pery road surfaces.
●When Active Corn ering Assist
frequently operates, Active Cor-
nering Assist may temporarily
stop operating to ensure proper
operation of the brakes, TRAC
and VSC.
■Hill-start assist control does
not operate effectively when
●Do not overly rely on hill-start
assist control. Hill-start assist
control may not o perate effec-
tively on steep inclines and
roads covered with ice.
●Unlike the parking brake,
hill-start assist control is not
intended to hold the vehicle sta-
tionary for an extended period
of time. Do not attempt to use
hill-start assist control to hold
the vehicle on an incline, as
doing so may lead to an acci-
dent.

2915-2. Basic information before operation
5
Audio
COROLLA_Uoperated.
●The displayed image may become
darker and moving images may
be slightly distorted when the
screen is cold.
●In extremely cold conditions, the
screen may not be displayed and
the data input b
y a user may be
deleted. Also, the screen buttons
may be harder than usual to
depress.
●When you look at the screen
through polarized material such as
polarized sunglasses, the screen
may be dark and hard to see. If
so, look at the scr een from differ-
ent angles, adjust the screen set-
tings on the display settings
screen or take off your sun-
glasses.
●When is displayed on the
screen, select to return to the
previous screen.
The operable areas of the
capacitive touch screen buttons
use capacitive touch sensors
and may not operate properly in
the following situations:
 If the screen is dirty or wet 
If a source of strong electro-
magnetic waves is brought
near the screen
 If a glove is worn during oper-
ation
 If the screen is touched by a
fingernail
 If a stylus is used to operate
the buttons
 If your palm touches the oper-
able area of another button
during operation
 If a button is touched quickly
 If the operable part of a
capacitive touch screen but-
ton is touched by or covered
with a metal object, such as
the following, it may not oper-
ate properly:
• Magnetic isolation cards
• Metallic foil, such as the inner
packaging of a cigarette box
• Metallic wallets or bags
•Coins
• Discs, such as a CD or DVD
 If the operable part of a
capacitive touch screen but-
ton is wiped, it may operate
unintentionally.
 If the capacitive touch screen
button is being touched when
the engine switch is changed
to ACC or ON, the button may
not operate properly. In this
case, remove anything touch-
ing the button, turn the engine
switch off and then turn it to
NOTICE
●To prevent damaging the
screen, lightly touch the screen
buttons with your finger.
●Do not use objects other than
your finger to touch the screen.
●Wipe off fingerprints using a
glass cleaning cloth. Do not use
chemical cleaners to clean the
screen, as they may damage
the touch screen.
Capacitive touch screen
buttons

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.

5188-2. Steps to take in an emergency
COROLLA_Uis 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 occupant 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.32)
■Electric power steering system
warning light (warning buzzer)
When the battery charge becomes
insufficient or the voltage temporar-
ily 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.523, 534
If none of the tires are punctured:
Turn the engine 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.481)
■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 ca se, adjusting the
tire inflation pressure will turn off the
warning ligh t (after a few minutes).
■When a tire is replaced with a
spare tire (vehicles with a tire
pressure warning system)
Vehicles with a co mpact 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.478
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.

5859-2. Customization
9
Vehicle specifications
COROLLA_U
■Power windows and moon roof* ( P.142, 145)
*: If equipped
■Moon roof* ( P.145)
*: If equipped
■Automatic light control system ( P.186)
FunctionDefault settingCustomized setting
Mechanical key linked
operationOffOn——O
Wireless remote control
linked operationOffOn (open only)——O
Wireless remote control
linked operation signal
(buzzer)
OnOff——O
FunctionDefault settingCustomized setting
Linked operation of com-
ponents when key is
used (open only)
Slide onlyTilt only——O
Linked operation of com-
ponents when wireless
remote control is used
Slide onlyTilt only——O
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
Off
O—O60 seconds
90 seconds
Windshield wiper linked
headlight illuminationOnOff——O

606What to do if... (Troubleshooting)
COROLLA_U
The seat belt reminder light is
flashing
Are the driver and the passenger
wearing the seat belts? ( P.514)
 The parking brake indicator is
on
Is the parking brake released?
( P.180
, 181)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.511, 521)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 8 2 )
Do one of the following to deac-
tivate or stop the alarms:
 Unlock the doors.
 Turn the engine switch to
ACC or ON, or start the
engine. (The alarm will be
deactivated or stopped after a
few seconds.)
 Is the electronic key left inside
the vehicle?
Check the message on the
multi-information display. ( P.521)
 When a warning light turns on
or a warning message is dis-
played, refer to P.511, 521.
 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.523)
 Vehicles with a spare tire:
Stop the vehicle in a safe
place and replace the flat tire
with the spare tire. ( P.534)
 Try the procedure for when
the vehicle becomes stuck in
mud, dirt, or snow. ( P.553)
An alarm is activated and
the horn sounds (vehicles
with an alarm)
A warning buzzer sounds
when leaving the vehicle
( v e h i c l e s w i t h a s m a r t k e y
system)
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

609Alphabetical Index
COROLLA_URiding with children ................ 47
Types of child restraint system
installation met hod ............... 50
Using an anchor bracket ........ 68
Child safety Airbag precautions ................. 36
Battery precautions ...... 473, 550
Child restraint system............. 50
Heated steering wheel and seat
heater precautions ............. 426
How your child should wear the seat belt................................ 28
Moon roof precau tions ......... 146
Power window lock switch.... 144
Power window precautions .. 143
Rear door child-protectors.... 121
Removed electronic key battery precautions......................... 491
Seat belt extender precautions ............................................. 28
Seat belt precautions ............. 47
Trunk precautions................. 122
Child-protectors ..................... 121
Cleaning Exterior ................................. 452
Interior .................................. 454
Radar sensor........................ 197
Seat belts ............................. 454
Wheels and wheel ornaments........................................... 452
Clock ............... 91, 93, 95, 98, 322
Coat hooks .............................. 443
Command list ......................... 367
Condenser .............................. 471
Console box ............................ 432
Consumption screen.............. 106
Continuously variable transmis- sion ................................ 169, 172If the shift lever cannot be shifted from P......................... 171, 173
M mode ................................ 175
Paddle shift switches.... 174, 175 Cooling system .......................470
Engine overheating ..............550
Cruise control Dynamic radar cruise control 240
Dynamic radar cruise control with full-speed range ..........229
Cup holders.............................431
Current fuel consumption......102
Curtain shield airbags ..............31
Customizable featu res ...........581
D
Daytime running light system186
DCM .................................406, 407
Defogger
Outside rear view mirrors ...418, 422
Rear window.................418, 422
Windshield ....................417, 422
Dimensions .............................556
Dinghy towing .........................162
Display Dynamic radar cruise control 240
Dynamic radar cruise control with full-speed range ..........229
LDA (Lane Departure Alert with steering control)..................226
LTA (Lane Tracing Assist) .....217
Multi-information display.......100
RCTA ....................................258
Warning message.................521
Display change button .......92, 97
Do-it-yourself maintenance ...458
Door lock Doors .................................... 117
Key ....................................... 118
Smart key system .................125
Wireless remote control........ 112
Doors Automatic door locking and unlocking system ................121
Door glasses ........................142

616Alphabetical Index
COROLLA_URear Cross Traffic Alert (RCTA)
............................................... 258
Rear seats ............................... 134 Head restraints ..................... 136
Rear side marker lights Light switch .......................... 186
Replacing light bulbs .... 496, 497
Wattage ................................ 566
Rear turn signal lights Replacing light bulbs .... 497, 498
Turn signal lever ................... 179
Wattage ................................ 566
Rear view mirror Inside rear view mirror.......... 139
Outside rear view mirrors ..... 140
Rear view monitor system ..... 263 If you notice any symptoms.. 268
Rear window defogger ... 418, 422
Receiving a call using the Blue- tooth
® hands-free system ... 381
Refueling Capacity ............................... 558
Fuel types............................. 558
Opening the fuel tank cap .... 194
Registering/Connecting a Blue- tooth
® device ........................ 298
Profiles ................................. 301
Registering a Bluetooth
® audio
player for the first time........ 301
Registering a Bluetooth
® phone
for the first time .................. 298
Replacing Electronic key battery ........... 489
Fuses ................................... 492
Light bulbs ............................ 495
Tires ..................................... 534
Wireless remote control battery........................................... 489
Reporting safety defects for U.S. owners................................... 592
Resetting the message indicat- ing maintenance is required 458 Road Sign Assist ....................250
RSA (Road Sign Assist) .........250
S
Safety Connect .........................73
Screen adjustment .
................296
Seat belt reminder light..514, 515
Seat belts...................................27 Adjusting the seat belt ............29
Automatic Locking Retractor ..29
Child restraint sys tem installation
.............................................50
Cleaning and maintaining the seat belt ..............................454
Emergency Locking Retractor 29
How to wear your seat belt .....28
How your child should wear the seat belt ................................28
Pregnant women, proper seat belt use .................................27
Reminder light and buzzer .514, 515
Seat belt extender ..................28
Seat belt pretensioners ..........30
SRS warning light .................512
Seat heaters ............................426
Seating capacity .............161, 556
Seats Adjustment ...........................133
Adjustment precautions ........133
Child seats/child restraint system installation ............................48
Cleaning ...............................454
Head restraints .....................136
Properly sitting in the seat ......25
Seat heaters ....... ..................426
Secondary Collision Brake ....272
Sensor Automatic headlight system .187
Automatic High Beam system...........................................189
BSM (Blind Spot M onitor) .....253

617Alphabetical Index
COROLLA_UInside rear view mirror.......... 140
LDA (Lane Departure Alert with
steering control) ................. 221
LTA (Lane Tracing Assist) ..... 211
Radar sensor................ 196, 255
RCTA .................................... 259
Service Connect ..................... 407
Service reminder message .... 458
Setup button (Menu screen) 285, 288
Setup screen ........................... 288
Shift lever Continuously variable transmis-sion............................. 169, 172
If the shift lever cannot be shifted from P......................... 171, 173
Manual transmission ............ 176
Shift lock system............ 171, 173
Side airbags .............................. 31
Side marker lights Light switch .......................... 186
Replacing light bulbs ............ 497
Wattage ................................ 566
Side mirrors Adjustment ........................... 140
BSM (Blind Spot Monitor)..... 253
Folding ................................. 141
RCTA function ...................... 258
Side turn signal lights Replacing light bulbs ............ 496
Turn signal lever ................... 179
Side windows ...... ................... 142
SiriusXM (SXM) ....................... 333
Smart key system Antenna location .................. 125
Entry functions ..................... 117
Starting the engine ............... 164
Snow tires ............................... 277
Spare tire ................................. 534 Inflation pressure.................. 564
Storage location ................... 535
Spark plug ............................... 561 Specifications .........................556
Speedometer .......................91, 95
Status icon ..............................286
Status icon explanation ........286
Steering lock Column lock release .....163, 165
Steering lock system warning message .............................165
Steering switch ...............349, 364 Audio switch .........................349
Talk switch ............................364
Steering wheel Adjustment ...........................138
Heated steering wheel..........426
Meter control switches..........101
Stop lights Replacing light bulbs ............496
Storage features ... ..................430
Stuck If the vehicle becomes stuck 553
Sun visors ...............................442
Sunshade Roof ......................................145
Switches Automatic High Beam system...........................................189
Brake Hold switch .................184
Display change button ......92, 97
Door lock switches ...............120
Driving mode select switch ...271
Dynamic radar cruise control switch .................................240
Dynamic radar cruise control with full-speed range switch230
Emergency flashers switch...502
Engine switch ...............163, 164
Garage door opener switches ...........................................444
Heated steering wheel switch ...........................................426
Ignition switch ...............163, 164