sensor TOYOTA COROLLA HATCHBACK 2021 (in English) Service Manual

2655-2. Basic information before operation
COROLLA H/B_U
5
Audio
●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 by 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 screen 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
ACC or ON, or restart the sys-
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

2665-2. Basic information before operation
COROLLA H/B_U
tem by press and hold the
“POWER VOLUME” knob for
3 seconds or more.
●Capacitive touch screen button
sensor sensitivity can be adjusted.
( P.296)
1 Press the “HOME” button.
2 Check that the home screen
is displayed.
 Selecting a screen will display
it full screen.
●The display information and area
on the home screen can be cus-
tomize.
●The home screen can be set to
several types of split layouts
Home screen
On the home screen, multi-
ple screens, such as the
audio/visual system screen,
hands-free screen and clock
screen, can be displayed
simultaneously.
Home screen operation

4778-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
■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 rear bumper around the radar sensor is
covered with dirt, etc. ( P.230)
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.234)
Warning lightDetails/Actions
(Flashes or illu-
minates)
If a buzzer sounds simultaneously:
A malfunction has occurred in the PCS (Pre-Collision Sys-
tem).
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.
 Possible causes and corrective actions ( P.176,
482)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled , the PCS warning light will illu-
minate.
 P. 1 8 5
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.

4788-2. Steps to take in an emergency
COROLLA H/B_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 not detect a pas-
senger, and the warning light may not operate properly.
■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. 2 9 )
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 off after the parking brake is fully released,
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.
Warning lightDetails/Actions
(Orange)
(if equipped)
Indicates a malfunction in the iMT
 Have the vehicle inspected by your Toyota dealer
immediately.

5399-2. Customization
COROLLA H/B_U
9
Vehicle specifications
■Power windows ( P.125)
■Automatic light control system ( P.160)
■Lights (P.160)
Theft deterrent panic
modeOnOff——O
Locking operation when
door openedOnOffO—O
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
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
FunctionDefault settingCustomized setting
Daytime running light
systemOnOffO—O
FunctionDefault settingCustomized setting

557What to do if... (Troubleshooting)
COROLLA H/B_U
 Is the electronic key battery
weak or depleted?
In this case, the engine can be
started in a temporary way.
( P.505)
 Is the battery discharged?
( P.506)
 Is the engine switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the engine switch in ON. ( P.148)
It is locked automatically to
prevent theft of the vehicle.
( P.142)
 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.127)
 The auto power off function will be operated if the vehicle
is left in ACC or ON mode
(the engine is not running) for
a period of time. (
P.146)
 The seat belt reminder light is
flashing
Are the driver and the front passen-
ger wearing the seat belts?
( P.475)
 The parking brake indicator is
on
Is the parking brake released?
( P.154)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.472, 482)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 6 6 )
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.)
The shift lever cannot be
shifted from P even if you
depress the brake pedal
(vehicles with a continu-
ously variable transmis-
sion)
The steering wheel can-
not be turned after the
engine is stopped
The windows do not open
or close by operating the
power window switches
The engine switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds (vehicles
with an alarm)

561Alphabetical Index
COROLLA H/B_U
Child safety Airbag precautions ................. 34
Battery precautions ...... 440, 509
Child restraint system............. 47
Heated steering wheel and seat heater precautions ............. 399
How your child should wear the seat belt................................ 26
Power window lock switch.... 127
Power window precautions .. 126
Rear door child-protectors.... 104
Removed electronic key battery precautions......................... 457
Seat belt extender precautions ............................................. 26
Seat belt precautions ............. 44
Child-protectors ..................... 104
Cleaning Exterior ................................. 420
Interior .................................. 422
Radar sensor........................ 173
Seat belts ............................. 422
Wheels and wheel ornaments........................................... 420
Clock ............... 74, 76, 78, 81, 297
Coat hooks .............................. 417
Command list ......................... 342
Condenser .............................. 438
Console box ............................ 405
Consumption screen................ 93
Continuously variable transmis- sion ........................................ 147If the shift lever cannot be shifted from P................................. 148
M mode ................................ 150
Paddle shift switches.... 149, 150
Cooling system ...................... 437 Engine overheating ............. 510
Cruise control Dynamic radar cruise control 215
Dynamic radar cruise control with full-speed range .......... 204 Cup holders.............................404
Current fuel consumption........84
Curtain shield airbags ..............29
Customizable features ...........535
D
Daytime running light system160
DCM .........................382, 383, 384
Defogger
Outside rear view mirrors .....395
Rear window.........................395
Windshield ............................394
Dimensions .............................514
Dinghy towing .........................141
Display Dynamic radar cruise control 215
Dynamic radar cruise control with full-speed range ..........204
Head-up display .....................89
LDA (Lane Departure Alert with steering control)..................201
LTA (Lane-Tracing Assist) .....192
Multi-information display.........82
RCTA ....................................233
Warning message.................482
Display change button .......75, 80
Distance until next engine oil change .....................................80
Do-it-yourself maintenance ...426
Door lock Back door .............................105
Side doors ............................101
Smart key system .................108
Wireless remote control..........99
Doors Automatic door locking and unlocking system ................104
Back door .............................105
Door glasses ........................125
Door lock ......................101, 105
Open door warning buzzer .102, 104

568Alphabetical Index
COROLLA H/B_U
RCTA function......................... 235
Rear Cross Traffic Alert (RCTA) ............................................... 233
Rear seats ............................... 116 Head restraints ..................... 118
Rear side marker lights Light switch .......................... 160
Rear turn signal lights Replacing light bulbs ............ 461
Turn signal lever ................... 153
Rear view mirror Inside rear view mirror.......... 122
Outside rear view mirrors ..... 123
Rear view monitor system ..... 238 If you notice any symptoms.. 242
Rear window defogger ........... 395
Rear window wiper ................. 168
Receiving a call using the Blue- tooth
® hands-free system ... 356
Refueling Capacity ............................... 515
Fuel types............................. 515
Opening the fuel tank cap .... 170
Registering/Connecting a Blue- tooth
® device ........................ 272
Profiles ................................. 275
Registering a Bluetooth
® audio
player for the first time........ 275
Registering a Bluetooth
® phone
for the first time .................. 272
Replacing Electronic key battery ........... 456
Fuses ................................... 458
Light bulbs ............................ 460
Reporting safety defects for U.S. owners................................... 546
Resetting the message indicat- ing maintenance is required 426
Road Sign Assist .................... 225
RSA (Road Sign Assist) ......... 225
S
Safety Connect .........................58
Screen adjustment .................270
Seat belt reminder light..475, 476
Seat belts...................................25 Automatic Locking Retractor ..27
Child restraint system installation.............................................47
Cleaning and maintaining the seat belt ..............................422
Emergency Locking Retractor 27
How to wear your seat belt .....26
How your child should wear the seat belt ................................26
Pregnant women, proper seat belt use .................................25
Reminder light and buzzer .475, 476
Seat belt extender ..................26
Seat belt pretensioners ..........28
SRS warning light .................473
Seat heaters ....... .....................399
Seating capacity .............140, 514
Seats Adjustment ........................... 115
Adjustment precautions ........ 115
Child seats/child restraint system
installation ............................45
Cleaning ...............................422
Head restraints ..................... 118
Properly sitting in the seat ......23
Seat heaters .........................399
Secondary Collision Brake ....247
Sensor Automatic headlight system .161
Automatic High Beam system...........................................163
BSM (Blind Spot Monitor) .....228
LDA (Lane Departure Alert with steering control)..................196
LTA (Lane Tracing Assist) .....186

569Alphabetical Index
COROLLA H/B_U
Radar sensor................ 172, 230
RCTA .................................... 235
Service Connect ..................... 384
Service reminder message .... 426
Setup button (Menu screen) 259, 262
Setup screen ........................... 262
Shift lever Continuously variable transmis-sion..................................... 147
Manual transmission ............ 151
Side airbags .............................. 29
Side marker lights Light switch .......................... 160
Wattage ................................ 520
Side mirrors Adjustment ........................... 123
BSM (Blind Spot Monitor)..... 228
Folding ................................. 123
RCTA function ...................... 233
Side turn signal lights Replacing light bulbs ............ 461
Turn signal lever ................... 153
Side windows ................... ...... 125
SiriusXM (SXM) ....................... 308
Smart key system Antenna location .................. 108
Entry functions ............. 101, 106
Starting the engine ............... 142
Snow tires ............................... 251
Spare tire Inflation pressure.................. 519
Storage location ................... 495
Spark plug ............................... 517
Specifications ......................... 514
Speedometer ...................... 74, 78
Status icon .............................. 260 Status icon explanation ........ 260
Steering lock Column lock release............. 142
Steering lock system warning message............................. 142 Steering switch ...............324, 339
Audio switch .........................324
Talk switch ............................339
Steering wheel Adjustment ...........................121
Heated steering wheel..........399
Meter control switches............83
Stop lights Replacing light bulbs ............461
Storage features ... ..................403
Stuck If the vehicle becomes stuck 512
Sun visors ...............................416
Switches Brake Hold switch .................157
Display change button ......75, 80
Door lock switches ...............103
Driving mode select switch ...245
Dynamic radar cruise control switch .................................215
Dynamic radar cruise control with full-speed range switch205
Emergency flashers switch ...464
Engine switch .......................142
Heated steering wheel switch ...........................................399
Ignition switch .......................142
Instrument panel light control switches..........................76, 81
Light switches .......................160
LTA (Lane-Tracing Assist) switch ...........................................191
Meter control switches............83
Outside rear view mirror switches..............................123
Paddle shift swit ches ....149, 150
Parking brake switch ............154
PCS OFF switch ...................180
Power door lock switch.........103
Power window switches .......125
RCTA switch .........................234