TOYOTA C-HR 2023 Owners Manual

4694-5. Using the driving support systems
4
Driving
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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.)

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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

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

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● If the front of the vehicle is raised or lowered due to the carried load
■ Situations in which the system may operate even if there is no possibil-
ity of a collision
Instances of the RCTA function unnecessary detecting a vehicle and/or object
may increase in the following situations:
● 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 turning while backing up
● When a vehicle turns into the detection
area
● When the parking space faces a street
and vehicles are being driven on the
street
● When the distance between your vehicle
and metal objects, such as a guardrail,
wall, sigh, or parked vehicle, which may
reflect electrical waves toward the rear
of the vehicle, is short

4744-5. Using the driving support systems
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● When there are spinning objects near your vehicle such as the fan of an air
conditioning unit
● When water is splashed or sprayed toward the rear bumper, such as from a
sprinkler
● Moving objects (flags, exhaust fumes, large rain droplets or snowflakes, rain
water on the road surface, etc.)
● When the distance between your vehicle and a guardrail, wall, etc., that
enters the detection area is short
● Gratings and gutters
● 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
● If the front of the vehicle is raised or lowered due to the carried load
● When a vehicle passes by the side of
your vehicle
● When a detected vehicle turns while
approaching the vehicle

475
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4-5. Using the driving support systems
Driving
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PKSB (Parking Suppor t Brake)
■Parking Support Brake function (static objects)
Ultrasonic sensors are used to detect static objects, such as a wall,
in the detection area when driving at a low speed or backing up .
( P. 483)
■Parking Support Brake function (rear-crossing vehicles) (if
equipped)
Rear radar sensors are used to detect approaching vehicles in t he
detection area behind the vehicle when backing up. ( P. 4 8 7 )
: If equipped
The Parking Support Brake system consists of the following
functions that operate when driving at a low speed or backing
up, such as when parking. When the system determines that a
collision with a detected object is high, a warning operates to
urge the driver to take evasive action. If the system determine s
that the possibility of a collision with a detected object is
extremely high, the brakes are automatically applied to help
avoid the collision or help reduce the impact of the collision.
PKSB (Parking Support Brake) system

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The Parking Support Brake can be enabled/disabled on the multi-
information display.
Use the meter control switches to enable/disable the parking su pport
brake. ( P. 169)
Press “ ” or “” of the meter control switches and select .
Press “ ” or “” of the meter control switches and select .
Press on the meter control switches to enable/disable the sys-
tem.
When the Parking Support Brake is disabled, the PKSB OFF indica tor
(P. 159) illuminates.
To re-enable the system when it was disabled, select on the mu lti-
information display, select and then On. If disabled using thi s method,
the system will not be re-enabled by turning the power switch o ff and then
to ON mode.
Enabling/Disabling the Parking Support Brake
1
2
3

4774-5. Using the driving support systems
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Driving
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If the hybrid system output restriction control or brake control oper-
ates, a buzzer will sound and a message will be displayed on th e
multi-information display, to alert the driver.
Depending on the situation, hybrid system output restriction co ntrol
will operate to either limit acceleration or restrict output as much as
possible.
● Hybrid system output restriction control is operating (acceleration
restriction)
Acceleration greater than a certain amount is restricted by the sys-
tem.
Multi-information display: “Object Detected, Acceleration Reduc ed.”
PKSB OFF indicator: Not illuminated
Buzzer: Does not sound
● Hybrid system output restriction control is operating (output
restricted as much as possible)
The system has determined that stronger-than-normal brake opera -
tion is necessary.
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
● Brake control is operating
The system determined that emergency braking is necessary.
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
● Vehicle stopped by system operation
The vehicle has been stopped by brake control operation.
Multi-information display: “Switch to Brake.” (If the accelerat or
pedal is not depressed, “Press brake pedal” will be displayed.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep
Displays and buzzers for hybrid system output restriction con-
trol and brake control

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If the Parking Support Brake determines that a collision with a
detected object or pedestrian is possible, the hybrid system ou tput will
be restricted to restrain any increase in the vehicle speed. (H ybrid
system output restriction control: See figure 2.)
Additionally, if the accelerator pedal continues to be depresse d, the
brakes will be applied automatically to reduce the vehicle spee d.
(Brake control: See figure 3.)
● Figure 1: When the PKSB (Parking Support Brake) is disabled
Hybrid system output
Braking force
Time
System overview