rain sensor TOYOTA C-HR 2023 Owners Manual

30Pictorial index
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Assist grips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 575
Vanity lights*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Interior lights/personal lights . . . . . . . . . . . . . . . . . . . . . . . . P. 558
Theft sensor off switch*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 150
Inside rear view mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 270
Sun visors*2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Vanity mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
*1: If equipped
*2: NEVER use a rearward facing child
restraint on a seat protected by an
ACTIVE AIRBAG in front of it, DEATH
or SERIOUS INJURY to the CHILD
can occur. ( P. 6 3 )

431-1. For safe use
1
For safety and security
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The main SRS airbag system components are shown above. The
SRS airbag system is controlled by the airbag sensor assembly. As
the airbags deploy, a chemical reaction in the inflators quickl y fills the
airbags with non-toxic gas to help restrain the motion of the o ccu-
pants.
Front impact sensors
Airbag manual on-off switch (if
equipped)
Front passenger airbag
“PASSENGER AIR BAG” indi-
cator (if equipped)
Side impact sensors (front)
Side impact sensors (front
door)
Seat belt pretensioners and
force limiters (front)
Side airbags
Curtain shield airbags
Driver’s seat position sensor
(if equipped)
Driver airbag
Driver’s knee airbag (if
equipped)
SRS warning light
Airbag sensor assembly
Seat belt pretensioners and
force limiters (rear outboard
seats) (if equipped)

2093-2. Opening, closing and locking the doors
3
Operation of each component
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■ Note for the entry function
● Even when the electronic key is within the effective range (detection areas),
the system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unl ocked.
• The electronic key is near the ground or in a high place, or t oo close to
the rear bumper center w hen the back door is opened.
• The electronic key is on the instrument panel, floor, or in th e door pockets
or glove box when the hybrid syst em is started or power switch modes
are changed.
● Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio w ave recep-
tion conditions, it may be detected by the antenna outside the cabin and the
door will become lockable from the outside, possibly trapping t he electronic
key inside the vehicle.
● As long as the electronic key is within the effective range, the doors may be
locked or unlocked by anyone. However, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.
● Even if the electronic key is not inside the vehicle, it may be possible to start
the hybrid system if the electronic key is near the window.
● The doors may unlock or lock if a large amount of water splashes on the
door handle, such as in the rain or in a car wash when the elec tronic key is
within the effective range. (The doors will automatically be lo cked after
approximately 30 seconds if the doors are not opened and closed .)
● If the wireless remote control is used to lock the doors when the electronic
key is near the vehicle, there is a possibility that the door m ay not be
unlocked by the entry function. (Use the wireless remote contro l to unlock
the doors.)
● Touching the door lock sensor while wearing gloves may delay or prevent
lock operation. Remove the gloves and touch the lock sensor aga in.
● If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may lock and unlock repeatedly. In that ca se, follow the
following correction procedures to wash the vehicle.
• Place the electronic key in a location 2 m (6 ft.) or more awa y from the
vehicle. (Take care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the s mart entry &
start system. ( P. 207)

343
4
4-3. Operating the lights and wipers
Driving
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Windshield wipers and washer
Operating the lever operates the wipers or washer as follows:
Rain-sensing windshield
wiper operation
Low speed windshield
wiper operation
High speed windshield
wiper operation
Temporary operation
When “AUTO” is selected, the wip-
ers will operate automatically when
the sensor detects falling rain. The
system automatically adjusts wiper
timing in accordance with rain vol-
ume and vehicle speed.
When “AUTO” is selected, the sensor sensitivity can be adjusted as
follows by turning the switch ring.
Increases the rain-sensing
windshield wiper sensitivity
Decreases the rain-sensing
windshield wiper sensitivity
Operating the wiper lever
6

3444-3. Operating the lights and wipers
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Washer/wiper dual oper-
ation
Pulling the lever operates the wip-
ers and washer.
Wipers will automatically operate a
couple of times after the washer
squirts.
Vehicles with headlight cleaners:
When the headlights are on and
the lever is pulled and held, the
headlight cleaners will operate
once. After this, the headlight
cleaners will operate every 5th
time the lever is pulled.
■ The windshield wipers and washer can be operated when
The power switch is in ON mode.
■ Effects of vehicle speed on wiper operation
Even when the wipers are not in “AUTO” mode, wiper operation va ries
depending on vehicle speed when the washer is being used (delay until drip
prevention wiper sweep occurs).
■ Raindrop sensor
● If the wiper switch is turned to the “AUTO” position while the power switch is
in ON mode, the wipers will operate once to show that “AUTO” mo de is acti-
vated.
● If the temperature of the raindrop sensor is 90C (194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”.
■ If no windshield washer fluid sprays
Check that the washer nozzles are not blocked, or if there is w asher fluid in
the windshield washer fluid reservoir.
● 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 windshield.

4064-5. Using the driving support systems
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■ Conditions in which the function may not operate or detect correctly
In the following situations, RSA does not operate normally and may not rec-
ognize signs, display the incorrect sign, etc. However, this do es not indicate a
malfunction.
● The front camera is misaligned due to a strong impact being applied to the
sensor, etc.
● Dirt, snow, stickers, etc., are on the windshield near the front camera.
● In inclement weather such as heavy rain, fog, snow or sand storms.
● Light from an oncoming vehicle, the sun, etc., enters the front camera.
● The sign is dirty, faded, tilted or bent.
● The contrast of electronic sign is low.
● All or part of the sign is hidden by the leaves of a tree, a pole, etc.
● The sign is only visible to the front camera for a short amount of time.
● The driving scene (turning, lane change, etc.) is judged incorrectly.
● If a sign not appropriate for the currently traveled lane, but the sign exists
directly after a freeway branches, or in an adjacent lane just before merging.
● Stickers are attached to the rear of the preceding vehicle.
● A sign resembling a system compatible sign is recognized.
● Side road speed signs may be detected and displayed (if positioned in sight
of the front camera) while the vehicle is traveling on the main road.
● Roundabout exit road speed signs may be detected and displayed (if posi-
tioned in sight of the front camera) while traveling on a round about.
● The front of the vehicle is raised or lowered due to the carried load
● The surrounding brightness is not sufficient or changes suddenly.
● When a sign intended for trucks, etc. is recognized.
● The vehicle is driven in a country with a different direction of traffic.
● The navigation system map data is outdated. (vehicles with navigation sys-
tem)
● The navigation system is not operating. (vehicles with navigation system)
● The speed information displayed on the meter and on the navigation system
(if equipped) may be different due to the navigation system usi ng map data.

4524-5. Using the driving support systems
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■ Conditions under which the system may not function correctly
● The BSM function may not detect vehicles correctly in the following situa-
tions:
• When the sensor is misaligned due to a strong impact to the se nsor or its
surrounding area
• When mud, snow, ice, a sticker, etc., is covering the sensor o r surround-
ing area on the rear bumper
• When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap b etween
each vehicle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your v ehicle and
the vehicle that enters the detection area
• When the difference in speed between your vehicle and another vehicle
is changing
• When a vehicle enters a detection area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the d etection area
• When driving up and down consecutive steep inclines, such as h ills, dips
in the road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven
surfaces
• When vehicle lanes are wide, or when driving on the edge of a lane, and
the vehicle in an adjacent lane is far away from your vehicle
• When a bicycle carrier or other accessory is installed to the rear of the
vehicle
• When there is a significant difference in height between your vehicle and
the vehicle that enters the detection area
• Immediately after the BSM system is set to on
• When towing a trailer

4624-5. Using the driving support systems
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● On an extremely bumpy road, on an incline, on gravel, or on grass.
● When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices which
produce ultrasonic waves are near the vehicle
● A sensor is coated with a sheet of spray or heavy rain.
● If objects draw too close to the sensor.
● When a pedestrian is wearing clothing that does not reflect ultrasonic waves
(ex. skirts with gathers or frills).
● When objects that are not perpendicular to the ground, not perpendicular to
the vehicle traveling direction, uneven, or waving are in the d etection range.
● Strong wind is blowing
● When driving in inclement weather such as fog, snow or a sandstorm
● When an object that cannot be detected is between the vehicle and a
detected object
● If an object such as a vehicle, motorcycle, bicycle or pedestrian cuts in front
of the vehicle or runs out from the side of the vehicle
● If the orientation of a sensor has been changed due to a collision or other
impact
● When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicy cle carrier, or
snow plow
● If the front of the vehicle is raised or lowered due to the carried load
● If the vehicle cannot be driven in a stable manner, such as when the vehicle
has been in an accident or is malfunctioning
● When a tire chains, compact spare tire or an emergency tire puncture repair
kit is used
● When a sensor or the area around a
sensor is extremely hot or cold.

4634-5. Using the driving support systems
4
Driving
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■ Situations in which the system may operate even if there is no possibil-
ity of a collision
In some situations, such as the following, the system may opera te even
though there is no possibility of a collision.
● When driving toward a banner, flag, low-hanging branch or boom barrier
(such as those used at railroad crossings, toll gates and parki ng lots)
● When there is a rut or hole in the surface of the road
● When driving on a metal cover (grating), such as those used for drainage
ditches
● When driving up or down a steep slope
● If a sensor is hit by a large amount of water, such as when driving on a
flooded road
● There is dirt, snow, water drops or ice on a sensor. (Cleaning the sensors
will resolve this problem.)
● A sensor is coated with a sheet of spray or heavy rain
● When driving in inclement weather such as fog, snow or a sandstorm
● When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices which
produce ultrasonic waves are near the vehicle
● If the front of the vehicle is raised or lowered due to the carried load
● If the orientation of a sensor has been changed due to a collision or other
impact
● When driving on a narrow road
●When strong winds are blowing

4724-5. Using the driving support systems
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■ Situations in which the system may not operate properly
The RCTA function may not detect vehicles correctly in the foll owing situa-
tions:
● When the sensor is misaligned due to a strong impact to the sensor or its
surrounding area
● When mud, snow, ice, a sticker, etc., is covering the sensor or surrounding
area on the position above the rear bumper
● When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
● When multiple vehicles are approaching with only a small gap between
each vehicle
● When a vehicle is approaching at high speed
● When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicy cle carrier, or
snow plow
● When towing a trailer
● When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area
● When a sensor or the area around a sensor is extremely hot or cold
● If the suspension has been modified or tires of a size other than specified
are installed
● When backing up on a slope with a
sharp change in grade
● When backing out of a sharp angle park-
ing spot