2023 TOYOTA C-HR Owners Manual

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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

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● 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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WARNING
■Cautions regarding the use of the system
There is a limit to the degree of recognition accuracy and cont rol perfor-
mance that this system can provide, do not overly rely on this system. The
driver is always responsible for paying attention to the vehicl e’ 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 d riven 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 autho rized
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, o r 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 ope rate 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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WARNING
■Side sensors (if equipped)
In the following situations, the clearance sonar may not operat e 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 a rea.
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.

467
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RCTA (Rear Crossing Traffic Aler t)
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 o f 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 appro ximately
1 second immediately after the RCTA function is turned on.
“RCTA OFF” indicator
Illuminates when the Rear Cross ing Traffic Alert is disabled.
: If equipped
Summary of the Rear Crossing Traffic Alert

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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 out side 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 s ensor area of
bumper ( P. 448).
Removing the water, snow, mud, etc., from the vicinity of the s ensor area
bumper should return it to normal.
Also, the sensor may not function normally when used in extreme ly 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 vehic le
inspected by any authorized Toyota retailer or Toyota authorize d repairer, or
any reliable repairer.
■ Rear side radar sensors
 P. 448
Turning the RCTA function on/off
1
2
3

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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 v ehicle. It
uses radar sensors to alert the driver of the other vehicle’s e xistence
through flashing the outside rear view mirror indicators and so unding
a buzzer.
RCTA function
Approaching vehicles Detection areas
WARNING
■ Cautions regarding the use of the system
There is a limit to the degree of recognition accuracy and cont rol perfor-
mance that this system can provide, do not overly rely on this system. The
driver is always responsible for paying attention to the vehicl e’s surround-
ings and driving safely. (P. 451)
■ To ensure the system can operate properly
P. 448

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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 vehicleSpeedApproximate
alert distance
Fast28 km/h (18 mph)20 m (65 ft.)
Slow8 km/h (5 mph)5.5 m (18 ft.)