sensor TOYOTA GR YARIS 2023 Workshop Manual

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4-5. Using the driving support systems
Driving
ing operation.
■Automatic system cancelation of
emergency brake signal
The emergency brake signal will be can- celed in any of the following situations:
●The emergency flashers are turned on.
●The system judges from the vehicle deceleration that is not a sudden brak-
ing operation.
■Secondary Collision Brake operat- ing conditions (if equipped)
The system operates when the SRS air-
bag sensor detects a collision while the vehicle is in motion.However, the system does not operate
in any of the following situations.
●The vehicle speed is below 10 km/h (6 mph)
●Components are damaged
■Secondary Collision Brake auto-matic cancelation (if equipped)
The system is automatically canceled in any of the following situations.
●The vehicle speed drops below approximately 10 km/h (6 mph)
●A certain amount of time elapses during operation
●The accelerator pedal is depressed a large amount
■If a message about AWD is shown on the multi-information displa y
Perform the following actions.
MessageDetails/Actions
“AWD System
Overheated
Switching to
2WD Mode”
AWD system is overheating.
 Perform the following actions.
• Stop the vehicle in a safe place and let the engine idle.*
Once the display message on the multi-information display turns
off, there is no problem continuing to drive.
If the message does not disappear, have your vehicle checked by
any authorized Toyota retailer or Toyota authorized repairer, o r any
reliable repairer immediately.

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6-1. Maintenance and care
Maintenance and care
late on the windows for a long period.
Clean the windows with a soft, damp cloth as soon as possible.• Do not use wax or glass cleaners that
contain abrasives when cleaning the windows.• Do not use any metallic objects to
remove condensation build up.
●When the water-repellent perfor-
mance has become insufficient, the coating can be repaired. Consult any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
■Plated portions
If dirt cannot be removed, clean the
parts as follows:
●Use a soft cloth dampened with an
approximately 5% solution of neutral detergent and water to clean the dirt off.
●Wipe the surface with a dry, soft cloth to remove any remaining moisture.
●To remove oily deposits, use alcohol wet wipes or a similar product.
■Carbon film (if equipped)
●Do not attach a roof carrier on the car-bon-film. It may damage the film sur-
face.
●On l y u se lo w t em pe r a tu r e wat e r ; 50 ° C
(122°F) or less, for an automatic car wash and high pressure washer.
Do not use the high pressure washer to
the film edge to avoid coming off.
●Do not take heated water more than 90°C (194°F) directly. It may cause the film to come off easily.
●Only use a neutral detergent which is approved for car wash use and water.
●Do not wax or apply a coating to the film to keep film textured appearance.
●Dirt like bird droppings and oil should be cleaned off with a neutral detergent
immediately.
■Brake
●Painted brake calipers
• When using detergent, use neutral
detergent. Do not use hard brushes or abrasive cleaners, as they will dam-age the paint.
• Do not use detergent on the brake cal- ipers when they are hot.• Wash detergent off immediately after
use.
●Rust may form if the vehicle is parked
with wet brake pads or disc rotors, causing them to stick. Before parking the vehicle after it is washed, drive
slowly and apply the brakes several times to dry the parts.
WARNING
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may cause the electrical components, etc.
to catch fire.
■When cleaning the windshield
Set the wiper switch to off. If the wiper switch is in “AUTO”, the wipers may operate unexpectedly in the following
situations, and may result in hands being caught or other serious injuries and cause damage to the wiper
blades.
Off
AUTO
●When the upper part of the wind- shield where the raindrop sensor is
located is touched by hand
●When a wet rag or similar is held
close to the raindrop sensor

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6-1. Maintenance and care
WARNING
●If something bumps against the windshield
●If you directly touch the raindrop sensor body or if something bumps
into the raindrop sensor
■Precautions regarding the
exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled sufficiently, as touching a hot
exhaust pipe can cause burns.
■Precaution regarding the rear
bumper with Blind Spot Monitor (if equipped)
If the paint of the rear bumper is
chipped or scratched, the system may malfunction. If this occurs, consult with any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer.
NOTICE
■To prevent paint deterioration and corrosion on the body and components (aluminum wheels,
etc.)
●Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on
the paint surface
• If dead insects, insect droppings or
bird droppings are present on the paint surface
• After driving in an area contami- nated with soot, oily smoke, mine dust, iron powder or chemical sub-
stances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gas- oline are spilled on the paint sur-face
●If the paint is chipped or scratched, have it repaired immediately.
●To prevent the wheels from corrod-ing, remove any dirt and store in a
place with low humidity when stor- ing the wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a hard
brush. This may damage the surfaces of the lights.
●Do not apply wax to the surfaces of the lights.
Wax may cause damage to the lenses.
■To prevent damage to the wind-shield wiper arms
When lifting the wiper arms away
from the windshield, pull the driver side wiper arm upward first, and repeat for the passenger side. When
returning the wipers to their original position, do so from the passenger side first.
■When using an automatic car wash
Set the wiper switch to the off posi- tion. If the wiper switch is in “AUTO”, the wipers may operate and the wiper
blades may be damaged.

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7-2. Steps to take in an emergency
■Toyota parking assist-sensor OFF indicator (warning buzzer)
■“RCTA OFF” indicator (warning buzzer)
Warning lightDetails/Actions
(Flashes)
(if equipped)
Indicates a malfunction in the Toyota parking assist-sensor fun c-
tion
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Indicates that the system is temporarily unavailable, possibly due
to a sensor being dirty or covered with ice, etc.
 Follow the instructions displayed on the multi-information
display. ( P.206)
Warning lightDetails/Actions
(Flashes)
(if equipped)
Indicates a malfunction in the RCTA (Rear Crossing Traffic Aler t)
function
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Indicates that the rear bumper around the radar sensor is cover ed
with dirt, etc. ( P.200)
 Follow the instructions displayed on the multi-information
display. ( P.211)

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7-2. Steps to take in an emergency
When trouble arises
■PCS warning light
■Slip 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 sensor,
seat belt reminder and warning buzzer
●If luggage is placed on the front pas-senger seat, the front passenger detection sensor may cause the warn-
ing 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 passenger,
and the warning light may not operate properly.
■If the malfunction indicator lamp comes on while driving
For some models, the malfunction indi- cator lamp will come on if the fuel tank becomes completely empty. If the fuel
tank is empty, refuel the vehicle immedi- ately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer as soon as possi-
Warning lightDetails/Actions
(Flashes or illumi- nates)
(if equipped)
When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Collision
System).
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily unavail-
able, corrective action may be necessary.
 Follow the instructions displayed on the multi-information
display. ( P.156, 321)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability Con-
trol) system is disabled, the PCS warning light will illuminate .
 P. 2 1 8
Warning lightDetails/Actions
Indicates a malfunction in:
 The VSC system;
 The TRC system; or
 The hill-start assist control system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.

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7-2. Steps to take in an emergency
level of the engine oil, and add if neces-
sary.
This message may appear if the vehicle is stopped on a slope. Move the vehicle
to a level surface and check to see if the message disappears.
■If “Engine Stopped Steering Power Low” is displayed
This message is displayed if the engine is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering wheel firmly and operate it using more force than usual.
■If “Avoid Excessive Acceleration
Due to Temperature” is displayed
This message may be displayed when driving such as the following:
●While warming up the engine
●Continuously driving at extremely high load
Drive the vehicle for a while, while
avoiding extremely high load conditions.
■If “Auto Power OFF to Conserve Battery” is displayed
Power was cut off due to the automatic
power off function. Next time when start- ing the engine, increase the engine speed slightly and maintain that level for
approximately 5 minutes to recharge the battery.
■If “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunc- tioning. Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer immediately.
●The LED headlight system
●Automatic High Beam (if equipped)
■If a message that indicates the mal-
function of front camera is dis- played
The following systems may be sus-
pended until the problem shown in the message is resolved. ( P.156, 313)
●PCS (Pre-Collision system) (if
equipped)
●LTA (Lane Tracing Assist) (if
equipped)
●Automatic High Beam (if equipped)
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control (if equipped)
■If a message that indicates the mal-function of radar sensor is dis-
played
The following systems may be sus- pended until the problem shown in the
message is resolved. ( P.156, 313)
●PCS (Pre-Collision system) (if
equipped)
●LTA (Lane Tracing Assist) (if
equipped)
●Dynamic radar cruise control (if
equipped)
■If “Radar Cruise Control Unavail- able See Owner’s Manual” is dis-played (if equipped)
The dynamic radar cruise control sys- tem is suspended temporarily or until the problem shown in the message is
resolved. (causes and coping methods:  P.156)
■If “Radar Cruise Control Unavail- able” is displayed (if equipped)
The dynamic radar cruise control sys- tem cannot be used temporarily. Use the system when it becomes available
again.
■If a message that indicates the need for visiting your Toyota dealer is displayed
The system or part shown on the multi- information display is malfunctioning. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately.

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8-2. Customization
Vehicle specifications
■Automatic light control system (P.142)
■Lights (P.143)
■PCS (Pre-Collision System)* (P.158)
*: If equipped
■LTA (Lane Tracing Assist)* (P.170)
*: If equipped
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Extended Headlight Light-
ing (Time elapsed before
headlights automatically
turn off)
30 seconds
60 seconds
——O90 seconds
120 seconds
FunctionDefault settingCustomized setting
Welcome lampOnOff——O
FunctionDefault settingCustomized setting
PCS (Pre-Collision Sys-
tem)OnOff—O—
Adjust alert timingMiddleEarly—O—Late
FunctionDefault settingCustomized setting
Lane centering functionOnOff—O—
Alert sensitivityHighStandard—O—
Vehicle sway warning func-
tionOnOff—O—
Vehicle sway warning sen-
sitivityStandardHigh—O—Low

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8-2. Customization
Vehicle specifications
*: If equipped
■Toyota parking assist-sensor* (P.204)
*: If equipped
■RCTA (Rear Crossing Traffic Alert)* (P.210)
*: If equipped
■Air conditioning system (P. 2 2 8 )
FunctionDefault settingCustomized setting
Toyota parking assist-sen-
sorOnOff—O—
Buzzer volumeLevel2Level1—O—Level3
Detection distance of the
front center sensorFarNear——O
Detection distance of the
rear center sensorFarNear——O
Detection distance of the
corner sensorFarNear——O
FunctionDefault settingCustomized setting
RCTA (Rear Crossing Traf-
fic Alert) functionOnOff—O—
Buzzer volumeLevel2Level1—O—Level3
FunctionDefault settingCustomized setting
Switching between outside
air and recirculated air
mode linked to automatic
mode switch operation
OnOffO—O

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What to do if... (Troubleshooting)
Is the window lock switch
pressed?
The power window except for the one
at the driver’s seat cannot be operated
if the window lock switch is pressed.
( P. 1 2 4)
The auto power off function will
be operated if the vehicle is left
in ACC or ON (the engine is not
running) for a period of time.
( P.136)
 The seat belt reminder light is
flashing
Are the driver and the passenger wear-
ing the seat belts? ( P.316)
The parking brake indicator is on
Is the parking brake released?
( P. 1 4 1)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.313, 321)
 Did anyone inside the vehicle
open a door or anything move
inside the vehicle during setting
the alarm?
The sensor detects it and the alarm
sounds. ( P. 7 2)
Do one of the following to deacti-
vate or stop the alarms:
 Unlock the doors using the entry
function or wireless remote con-
trol.
 Starting 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-infor-
mation display. ( P.321)
When a warning light turns on or
a warning message is displayed,
refer to P.313, 321.
 Stop the vehicle in a safe place
and repair the flat tire temporarily
with the emergency tire puncture
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)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on or a
warning message is dis-
played
When a problem has
occurred
If you have a flat tire

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Alphabetical Index
C
Card holders ................................. 239
Care ....................................... 246, 249
Aluminum wheels ....................... 246
Exterior....................................... 246
Interior ........................................ 249
Matte paint ................. 252, 256, 259
Seat belts ................................... 249
Chains ........................................... 225
Child restraint system .................... 45
Points to remember...................... 45
Riding with children ...................... 44
Child safety ..................................... 44
Airbag precautions ....................... 38
Battery precautions ............ 274, 342
Child restraint system .................. 45
Heated steering wheel and seat
heater precautions ................... 233
How your child should wear the seat
belt ............................................. 32
Installing child restraints............... 45
Power window lock switch ......... 124
Power window precautions ........ 123
Removed electronic key battery pre-
cautions ................................... 294
Seat belt precautions ................... 44
Cleaning ................................ 246, 249
Aluminum wheels ....................... 246
Exterior....................................... 246
Interior ........................................ 249
Radar sensor ............................. 153
Seat belts ................................... 249
Clock ..........................................81, 83
Condenser ..................................... 272
Consumption screen ...................... 94
Cooling system .............................271
Engine overheating .................... 344
Cruise control
Dynamic radar cruise control ..... 179
Cup holders ...................................238
Current fuel consumption ..............86
Curtain shield airbags ....................34
Customizable features ................. 359
D
Daytime running light system ..... 142
Deck board .................................... 239
Defogger
Outside rear view mirrors ........... 230
Rear window .............................. 230
Windshield.................................. 229
Differential ..................................... 354
Dimensions ...................................348
Display
Dynamic radar cruise control ..... 179
Head-up display ........................... 90
LTA (Lane-Tracing Assist) .......... 175
Multi-information display ..............84
Toyota parking assist-sensor...... 204
Warning message ...................... 321
Display change button ................... 82
Do-it-yourself maintenance ......... 263
Door
Double locking system ................. 71
Door lock
Back door ...................................104
Side doors .................................. 101
Smart entry & start system ......... 107
Wireless remote control ............... 99