2022 TOYOTA GR YARIS sensor

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4-3. Operating the lights and wipers
4-3.Operating the lights and wipers
Operating the switch turns
on the lights as follows:
1 The headlights, daytime
running lights ( P.142) and all
the lights listed below turn on
and off automatically.
2 The front position, tail,
license plate and instrument
panel lights turn on.
3 The headlights and all the
lights listed above turn on.
■AUTO mode can be used when
The engine switch is in ON.
■Daytime running light system
To make your vehicle more visible to
other drivers during daytime driving, the
daytime running lights turn on automati-
cally whenever the engine is started and
the parking brake is released with the
headlight switch in the position.
(Illuminate brighter than the front posi-
tion lights.) Daytime running lights are
not designed for use at night.
■Headlight control sensor
The sensor may not function properly if
an object is placed on the sensor, or anything that blocks the sensor is affixed to the windshield.
Doing so interferes with the sensor detecting the level of ambient light and may cause the automatic headlight sys-
tem to malfunction.
■Automatic light off system
●When the light switch is in or
: The headlights and front fog
lights turn off automatically if the
engine switch is turned to ACC or
OFF.
●When the light switch is in : The
headlights and all lights turn off auto-
matically if the engine switch is turned
to ACC or OFF.
To turn the lights on again, turn the
engine switch to ON, or turn the light
switch once and then back to
Headlight switch
The headlights can be oper-
ated manually or automatically.
Operating instructions

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4-3. Operating the lights and wipers
Driving
4 Temporary operation
When “AUTO” is selected, the wipers
will operate automatically when the
sensor detects falling rain. The system
automatically adjusts wiper timing in
accordance with rain volume and vehi-
cle speed.
When “AUTO” is selected, the sen-
sor sensitivity can be adjusted as
follows by turning the switch ring.
5 Increases the rain-sensing wind-
shield wiper sensitivity
6 Decreases the rain-sensing
windshield wiper sensitivity
7 Washer/wiper dual oper-
ation
Pulling the lever operates the wipers
and washer.
Wipers will automatically operate a cou-
ple of times after the washer squirts.
■The windshield wiper and washer can be operated when
The engine switch is in ON.
■Effects of vehicle speed on wiper operation
Vehicle speed affects the Intermittent
wiper interval.
■Raindrop sensor
●The raindrop sensor judges the
amount of raindrops. An optical sensor is adopted. It may not operate properly when sunlight
from the rising or setting of the sun intermittently strikes the windshield, or if bugs etc. are present on the wind-
shield.
●If the wiper is turned to AUTO mode
while the engine switch is in ON, the wipers will operate once to show that AUTO mode is activated.
●If the temperature of the raindrop sen-sor is 85°C (185°F) or higher, or -15°C
(5°F) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the windshield washer fluid reservoir.

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4-3. Operating the lights and wipers
WARNING
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the windshield is subject to vibra-
tion in AUTO mode. Take care that your fingers or anything else do not become caught in the windshield wip-
ers.
■Caution regarding the use of
washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility. This may lead to an accident, result-
ing in death or serious injury.
NOTICE
■When there is no washer fluid
spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled
toward you and held continually.
■When a nozzle becomes blocked
In this case, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. Do not try to clear it with a pin or other object. The nozzle will be damaged.

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4-5. Using the driving support systems
Driving
4-5.Using the d riving s upport sy ste ms
*: If equipped
■PCS (Pre-Collision System)
 P. 1 5 8
■LTA (Lane Tracing Assist)
 P. 1 7 0
■AHB (Automatic High Beam)
 P. 1 4 5
■RSA (Road Sign Assist) (if
equipped)
 P. 1 9 0
■Dynamic radar cruise control
 P. 1 7 9
Two types of sensors, located
behind the front grille and wind-
shield, detect information neces-
sary to operate the drive assist
systems.
Radar sensor
Front camera
Toyota Safety Sense*
The Toyota Safety Sense con-
sists of the following drive
assist systems and contrib-
utes to a safe and comfortable
driving experience:
Driving assist system
WARNING
■Toyota Safety Sense
The Toyota Safety Sense is designed to operate under the assumption that the driver will drive safely, and is
designed to help reduce the impact to the occupants and the vehicle in the case of a collision or assist the driver
in normal driving conditions. As there is a limit to the degree of rec-ognition accuracy and control perfor-
mance that this system can provide, do not overly rely on this system. The driver is always responsible for paying
attention to the vehicle’s surroundings and driving safely.
Sensors
WARNING
■To avoid malfunction of the radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not operate properly, possibly leading to an accident resulting in death or seri-
ous injury.

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4-5. Using the driving support systems
WARNING
●Keep the radar sensor and the radar sensor cover clean at all
times.
Radar sensor
Radar sensor cover
If the front of the radar sensor or the
front or back of the radar sensor
cover is dirty or covered with water
droplets, snow, etc., clean it.
Clean the radar sensor and radar
sensor cover with a soft cloth to avoid
damaging them.
●Do not attach accessories, stickers
(including transparent stickers) or other items to the radar sensor, radar sensor cover or surrounding
area.
●Do not subject the radar sensor or
its surrounding area to a strong impact.If the radar sensor, front grille, or
front bumper has been subjected to a strong impact, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
●Do not disassemble the radar sen-sor.
●Do not modify or paint the radar sensor or radar sensor cover.
●In the following cases, the radar sensor must be recalibrated. Con-tact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer for details.
• When the radar sensor or front
grille are removed and installed, or replaced
• When the front bumper is replaced
■To avoid malfunction of the front camera
Observe the following precautions. Otherwise, the front camera may not operate properly, possibly leading to
an accident resulting in death or seri- ous injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow, etc., clean the windshield.
• If a glass coating agent is applied to the windshield, it will still be neces-
sary to use the windshield wipers to remove water droplets, etc., from the area of the windshield in front of
the front camera.
• If the inner side of the windshield
where the front camera is installed is dirty, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

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4-5. Using the driving support systems
■Certifications for the Toyota Safety Sense
 P. 4 2 3
■If a warning message is displayed on the multi-information display
A system may be temporarily unavailable or there may be a malfu nction in the sys- tem.
●In the following situations, perform the actions specified in t he table. When the nor- mal operating conditions are detected, the message will disappe ar and the system will become operational.
If the message does not disappear, contact any authorized Toyot a retailer or Toyota authorized repairer, or any reliable repairer.
SituationActions
When the area around a camera is cov-
ered with dirt, moisture (fogged up, cov-
ered with condensation, ice, etc.), or
other foreign matter
Using the wiper and A/C function,
remove the dirt and other attached mat-
ter. ( P.229).
When the temperature around the front
camera is outside of the operational
range, such as when the vehicle is in the
sun or in an extremely cold environment
If the front camera is hot, such as after
the vehicle had been parked in the sun,
use the air conditioning system to
decrease the temperature around the
front camera.
If a sunshade was used when the vehicle
was parked, depending on its type, the
sunlight reflected from the surface of the
sunshade may cause the temperature of
the front camera to become excessively
high.
If the front camera is cold, such after the
vehicle is parked in an extremely cold
environment, use the air conditioning
system to increase the temperature
around the front camera.
The area in front of the front camera is
obstructed, such as when the hood is
open or a sticker is attached to the part of
the windshield in front of the front cam-
era.
Close the hood, remove the sticker, etc.,
to clear the obstruction.
When “Pre-Collision System Radar In
Self Calibration Unavailable See
Owner’s Manual” is displayed.
Check whether there is attached materi-
als on the radar sensor and radar sensor
cover, and if there is, remove it.

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4-5. Using the driving support systems
Driving
●In the following situations, if the situation has changed (or the vehicle has been
driven for some time) and the normal operating conditions are d etected, the mes- sage will disappear and the system will become operational.
If the message does not disappear, contact any authorized Toyot a retailer or Toyota authorized repairer, or any reliable repairer.• When the temperature around the radar sensor is outside of the operational range,
such as when the vehicle is in the sun or in an extremely cold environment • When the front camera cannot detect objects in front of the ve hicle, such as when driving in the dark, snow, or fog, or when bright lights are sh ining into the front
camera • Depending on the conditions in the vicinity of the vehicle, th e radar may judge the surrounding environment can not be properly recognized. In that case, “Pre-Colli-
sion System Unavailable See Owner’s Manual” is displayed.

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4-5. Using the driving support systems
*: If equipped
The system can detect the following (The detectable objects differs
depending on the function.):
PCS (Pre-Collision System)*
The pre-collision system uses a rad ar sensor and front camera to
detect objects ( P.158) in front of the vehicle. When the system
determines that the possibility of a frontal collision with an object is
high, a warning operates to urge the driver to take evasive act ion
and the potential brake pressure is increased to help the drive r
avoid the collision. If the syste m determines that the possibility of a
frontal collision with an object is extremely high, the brakes are
automatically applied to help avoid the collision or help reduc e the
impact of the collision.
The pre-collision system can be di sabled/enabled and the warning
timing can be changed. ( P.162)
Detectable objects and function availability