Toyota C-HR (2023 year). Manual in english - page 23

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4-5. Using the driving support systems

When an object is detected by a sensor, the approximate distance to
the  object  will  be  displayed  on  the  multi-information  display.  (As  the
distance  to  the  object  becomes  short,  the  distance  segments  may
blink.)
The  front  side  sensor  displays  and  rear  side  sensor  displays  (if
equipped) are not shown until a scan of the side areas is completed.

■

Corner sensors

The distance display and buzzer

Approximate distance to

object

Multi-information display

Buzzer

60 cm (2.0 ft.) to

45 cm (1.5 ft.)

Medium

45 cm (1.5 ft.) to

30 cm (1.0 ft.)

Fast

30 cm (1.0 ft.) to

15 cm (0.5 ft.)

Continuous

Less than 15 cm

(0.5 ft.)

Continuous

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4-5. Using the driving support systems

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■

Center sensors

Approximate distance to

object

Multi-information display

Buzzer

Front: 100 to 60 cm

(3.3 to 2.0 ft.)

Rear: 150 to 60 cm

(4.9 to 2.0 ft.)

Slow

60 cm (2.0 ft.) to

45 cm (1.5 ft.)

Medium

45 cm (1.5 ft.) to

30 cm (1.0 ft.)

Fast

30 cm (1.0 ft.) to

15 cm (0.5 ft.)

Continuous

Less than 15 cm

(0.5 ft.)

Continuous

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4-5. Using the driving support systems

■

Buzzer operation and distance to an object

A buzzer sounds when the sensors are operating.

●

The buzzer beeps faster as the vehicle approaches an object.
When the vehicle comes within approximately 30 cm (1.0 ft.) of
the object, the buzzer sounds continuously.

●

When 2 or more objects are detected simultaneously, the buzzer
sounds for the nearest object. If one or more objects come within
approximately 30 cm (1.0 ft.) of the vehicle, the buzzer will repeat
a long tone, followed by fast beeps.

●

Automatic buzzer mute function: After a buzzer begins sounding,
if the distance between the vehicle and the detected object does
not become shorter, the buzzer will be muted automatically.
(However, if the distance between the vehicle and object is
30 cm (1.0 ft.) or less, this function will not operate.)

■

Adjusting the buzzer volume

The buzzer volume can be adjusted on the multi-information dis-
play.
The volume of buzzers for the Toyota parking assist-sensor and
RCTA function (if equipped) will be adjusted simultaneously.
Use the meter control switches to change settings. (



P. 169)

Press “



” or “



” to select

Press “



” or “



” to select “Vehicle Settings”, and then press

Press “



” or “



” to select

, and

select the volume and then press

Each time the switch is pressed, the volume level will change between
1, 2 and 3.

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4-5. Using the driving support systems

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■

Muting a buzzer

A mute button will be displayed on the multi-information display

when an object is detected. To mute the buzzer, press

The buzzers for the Toyota parking assist-sensor and RCTA func-
tion (if equipped) will be muted simultaneously.
Mute will be canceled automatically in the following situations:

●

When the shift lever is changed.

●

When the vehicle speed exceeds a certain speed.

●

When the operating function is temporarily canceled.

●

When the operating function is disabled manually.

●

When the power switch is turned off.

Approximately 100 cm (3.3 ft.)
Approximately 150 cm (4.9 ft.)
Approximately 60 cm (2.0 ft.)
Approximately 60 cm (2.0 ft.) (if
equipped)

• The diagram shows the detection

range of the sensors. Note that
the sensors cannot detect objects
that are extremely close to the
vehicle.

• Vehicles with side sensors: For

details regarding object detection
in the side areas. (



P. 461)

• The range of the sensors may

change depending on the shape
of the object, etc.

Vehicles with side sensors: The object detection range can be
changed. (



P. 785)

Detection range of the sensors

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4-5. Using the driving support systems

■

The system can be operated when

●

The power switch is in ON mode.

●

Toyota parking assist-sensor function is on.

●

The vehicle speed is less than about 10 km/h (6 mph).

●

A shift lever other than P is selected.

●

Vehicles with side sensors: Steering wheel is turned approximately 90° or
more

■

If “Parking assist unavailable. Clean parking assist sensor” is displayed
on the multi-information display

A sensor may be covered with ice, snow, dirt, etc. Remove the ice, snow, dirt,
etc., from the sensor to return the system to normal.
Also, due to ice forming on a sensor at low temperatures, a warning message
may be displayed or the sensor may not be able to detect an object. Once the
ice melts, the system will return to normal.

■

If “Parking assist Malfunction Visit your dealer” is displayed on the
multi-information display

The system may not operate due to the malfunction of a sensor.
Have the vehicle inspected by any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.

■

Sensor detection information

The following situations may occur during use.

●

The sensors may be able to only detect objects near the front and rear bum-
pers.

●

Depending on the shape of the object and other factors, the detection dis-
tance may shorten, or detection may be impossible.

●

If an object is extremely close to a sensor, it may not be detected.

●

There will be a short delay between object detection and display. Even at
low speeds, there is a possibility that the object will come within the sensor’s
detection areas before the display is shown and the warning beep sounds.

●

It might be difficult to hear the buzzer due to the volume of the audio system
or air flow noise of the air conditioning system.

●

It may be difficult to hear the buzzer if buzzers for other systems are sound-
ing.

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4-5. Using the driving support systems

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■

Objects which the system may not be properly detected

The shape of the object may prevent the sensor from detecting it. Pay partic-
ular attention to the following objects:

●

Wires, fences, ropes, etc.

●

Cotton, snow and other materials that absorb sound waves

●

Sharply-angled objects

●

Low objects

●

Tall objects with upper sections projecting outwards in the direction of your
vehicle

People may not be detected if they are wearing certain types of clothing.

■

Object warning function (vehicles with side sensors)

■

Obstacle detection in side areas (vehicles with side sensors)

●

Objects in the side areas are detected while driving by scanning the side
areas with the side sensors. Recognized objects are retained in memory for
up to approximately 2 minutes.

●

Objects may not be detected in the side areas until the scan completes.
After the power switch is turned to ON mode, scanning completes after driv-
ing the vehicle for a short period of time.

●

When an object such as another vehicle, pedestrian or animal is detected
by the side sensors, the object may continue to be detected even after it has
left the side sensor detection area.

■

Situations in which the system may not operate properly

Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect objects. Particular instances where this
may occur are listed below.

●

There is dirt, snow or ice on a sensor. (Cleaning the sensors will resolve this
problem.)

●

A sensor is frozen. (Thawing the area will resolve this problem.)

In especially cold weather, if a sensor is frozen the sensor display may be dis-
played abnormally, or objects, such as a wall, may not be detected.

When an object in the side areas is within
the vehicle course while the vehicle is
moving forward or backward, this function
inform the driver by the display and the
buzzer.

Object
Calculated vehicle course

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4-5. Using the driving support systems

●

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 detection 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.), bicycle 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.

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4-5. Using the driving support systems

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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 operate 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 parking 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

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4-5. Using the driving support systems

●

The vehicle is approaching a tall or curved curb

●

Driving close to columns (H-shaped steel beams, etc.) in multi-story parking
garages, construction sites, etc.

●

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

■

Customization

Setting of buzzer volume can be changed.
(Customizable features:



P. 785)

●

On an extremely bumpy road, on an
incline, on gravel, or on grass

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4-5. Using the driving support systems

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WARNING

■

Cautions regarding the use of the system

There is a limit to the degree of recognition 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’ surroundings
and driving safely.

■

To ensure the system can operate properly

Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely
and possibly cause an accident.

●

Do not damage the sensors, and always keep them clean.

●

Do not attach a sticker or install an electronic component, such as a backlit
license plate (especially fluorescent type), fog lights, fender pole or wire-
less antenna near a radar sensor.

●

Do not  subject the  surrounding area of  the  sensor  to a  strong  impact. If
subjected  to  an  impact,  have  the  vehicle  inspected  by  any  authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer. If the
front  or  rear  bumper  needs  to  be  removed/installed  or  replaced,  contact
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

●

Do not modify, disassemble or paint the sensors.

●

Do not attach a license plate cover.

●

Keep your tires properly inflated.

■

When to disable the function

In the following situations, disable the function as it may operate even
though there is no possibility of a collision.

●

Failing to observe the warnings above.

●

A non-genuine Toyota suspension (lowered suspension, etc.) is installed.

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4-5. Using the driving support systems

WARNING

■

Side sensors (if equipped)

In the following situations, the clearance sonar may not operate normally
and may result in an unexpected accident. Drive carefully.

●

Objects may not be detected in the side areas until the vehicle is driven for
a short time and a scan of the side areas is completed. (



P. 461)

●

Even after the scan of the side areas is completed, objects such as other
vehicles, people or animals that approach from the sides cannot be
detected.

●

Even after the scan of the side areas is completed, objects may not be
detected depending on the surrounding situation of the vehicle.
At that time, the side sensor displays (



P. 455) temporary turn off.

■

Notes when washing the vehicle

Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

●

When using a high pressure washer to wash the vehicle, do not spray the
sensors directly, as doing so may cause a sensor to malfunction.

●

When using steam to clean the vehicle, do not direct steam too close to
the sensors as doing so may cause a sensor to malfunction.

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RCTA (Rear Crossing Traffic Alert)



The RCTA function uses the BSM rear side radar sensors installed
behind the rear bumper. This function is intended to assist the driver
in checking areas that are not easily visible when backing up.

Outside rear view mirror indicators

When a vehicle approaching from the right or left at the rear of the vehicle
is detected, both outside rear view mirror indicators flash.

RCTA buzzer

If a vehicle approaching from the right or left at the rear of the vehicle is
detected, a buzzer will sound. The buzzer also sounds for approximately
1 second immediately after the RCTA function is turned on.

“RCTA OFF” indicator

Illuminates when the Rear Crossing Traffic Alert is disabled.



: If equipped

Summary of the Rear Crossing Traffic Alert

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4-5. Using the driving support systems

Press “



” or “



” of the meter control switches, select

Press “



” or “



” of the meter control switches, select

Press “



” or “



” of the meter control switches, select “RCTA”.

When the RCTA function is disabled, the “RCTA OFF” indicator (



P. 467)

illuminates. (Each time the power switch is turned off and then changed to
ON mode, the RCTA function will be enabled automatically.)

■

The outside rear view mirror indicators visibility

When under strong sunlight, the outside rear view mirror indicator may be dif-
ficult to see.

■

Hearing the RCTA buzzer

The RCTA buzzer may be difficult to hear over loud noises, such as if the
audio system volume is high.

■

When “RCTA Unavailable.” is shown on the multi-information display

Water, snow mud, etc., may be built up in the vicinity of the sensor area of
bumper (



P. 448).

Removing the water, snow, mud, etc., from the vicinity of the sensor area
bumper should return it to normal.
Also, the sensor may not function normally when used in extremely hot or
cold weather.

■

When “RCTA Malfunction Visit Your Dealer.” is shown on the multi-infor-
mation display

There may be a sensor malfunction or misaligned. Have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.

■

Rear side radar sensors



P. 448

Turning the RCTA function on/off

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The RCTA functions when your vehicle is in reverse. It can detect
other vehicles approaching from the right or left rear of the vehicle. It
uses radar sensors to alert the driver of the other vehicle’s existence
through flashing the outside rear view mirror indicators and sounding
a buzzer.

RCTA function

Approaching vehicles

Detection areas

WARNING

■

Cautions regarding the use of the system



P. 451)

■

To ensure the system can operate properly



P. 448

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4-5. Using the driving support systems

The areas that vehicles can be detected in are outlined below.

To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:

■

The RCTA function is operational when

The RCTA function operates when all of the following conditions are met:

●

The RCTA system is set to on. (



P. 468)

●

The shift lever is in R.

●

Vehicle speed is less than approximately 8 km/h (5 mph).

●

Approaching vehicle speed is between approximately 8 km/h (5 mph) and
28 km/h (18 mph).

■

Adjusting the buzzer volume



P. 458

RCTA function detection areas

Approaching vehicle

Speed

Approximate
alert distance

Fast

28 km/h (18 mph)

20 m (65 ft.)

Slow

8 km/h (5 mph)

5.5 m (18 ft.)

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■

Muting a buzzer



P. 459

■

Conditions under which the system will not detect a vehicle

The RCTA function is not designed to detect the following types of vehicles
and/or objects:

●

Vehicles approaching from directly behind

●

Vehicles backing up in a parking space next to your vehicle

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles moving away from your vehicle

●

Vehicles approaching from the parking spaces next to your vehicle

●

The distance between the sensor and approaching vehicle gets too close

: Depending on the conditions, detection of a vehicle and/or object may

occur.

●

Vehicles that the sensors cannot detect
due to obstructions

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