sensor TOYOTA COROLLA HATCHBACK 2022 (in English) Repair Manual

3124-5. Using the driving support systems
*: If equipped
Meter control switches
Turning the RCTA function on/off.
When the RCTA function is disabled,
the RCTA OFF indicator illuminates.
Outside rear view mirror indica-
tors
When a vehicle approaching from the
right or left at the rear of the vehicle is
detected, both outside rear view mirror
indicators will 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.
Use the meter control switches to
enable/disable the RCTA function.
( P. 1 0 0 )
1 Press or to select .
2 Press or to select
“RCTA” and then press .
When the RCTA function is disabled, the RCTA OFF indicator ( P.87) illumi-
nates. (Each time the engine switch is
turned off then changed to ON, the
RCTA function will be enabled automat- ically.)
RCTA (Rear Crossing
Traffic Alert) function*
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.
WA R N I N G
■Cautions regarding the use of the system
There is a limit to the degree of recog-
nition accuracy and control perfor- mance that this system can
provide,do not overly rely on this sys-
tem. The driver is always responsible for paying attention to the vehicle’s
surroundings and driving safely.
( P.288)
■To ensure the system can oper-
ate properply
 P.300
System components
Turning the RCTA function
on/off

313
4
4-5. Using the driving support systems
Driving■Outside rear view mirror indicator visibility
In strong sunlight, the outside rear view
mirror indicator may be difficult 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
attached to the rear bumper around the sensors. ( P.300) Removing the water,
snow, mud, etc., from the attached to
the rear bumper around the sensors to normal.
Additionally, the function may not func-
tion normally when used in extremely hot or cold environments.
■Rear side radar sensors
 P. 3 0 0
■Operation of the RCTA function
The RCTA function uses rear side radar sensors to detect vehicles
approaching from the right or left at the rear of the vehicle and alerts the
driver of the presence of such vehicles by flashing the outside rear view
mirror indicators and sounding a buzzer.
Approaching vehicles
Detection areas of approaching vehicles
WA R N I N G
■Cautions regarding the use of
the function
The driver is solely responsible for safe driving. Always drive safely, tak-
ing care to observe your
surroundings.
The RCTA function is only a supple-
mentary function which alerts the
driver that a vehicle is approaching from the right or left at the rear of the
vehicle. As the RCTA function may
not function correctly under certain conditions, the driver’s own visual
confirmation of safety is necessary.
Over reliance on this function may lead to an accident resulting death or
serious injury.
RCTA function

3144-5. Using the driving support systems
■RCTA function detection areas
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of
faster vehicles approaching from
farther away.
Example:
■The RCTA function is operational
when
The RCTA function operates when all of
the following conditions are met:
●The engine switch is in ON.
●The RCTA function is on.
●The shift lever is in R.
●The vehicle speed is approximately 15
km/h (9 mph) or less.
●The approaching vehicle speed is
between approximately 8 km/h (5
mph) and 56 km/h (34 mph).
■Adjusting the buzzer volume
The buzzer volume can be adjusted on the multi-information display. The vol-
ume of buzzers for the Toyota parking
assist-sensor and RCTA function will be adjusted simultaneously.
Use the meter control switches to change settings. ( P.100)
1 Press or to select .
2 Press or to select “RCTA”
and then press and hold .
3 Select the volume and then press
.
Each time the switch is pressed, the vol-
ume level will change between 1, 2 and
3.
■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 function 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 tempo-
rarily canceled.
●When the operating function is disa-
bled manually.
●When the engine switch is turned off.
Approaching vehi-
cle speed
Approximate
alert distance
56 km/h (34 mph)
(fast)40 m (131 ft.)
8 km/h (5 mph)
(slow)5.5 m (18 ft.)

315
4
4-5. Using the driving support systems
Driving
■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
●Vehicles that the sensors cannot
detect due to obstructions
●Guardrails, walls, signs, parked vehi-
cles and similar stationary objects*
●Small motorcycles, bicycles, pedestri-
ans, etc.*
●Vehicles moving away from your vehi- cle
●Vehicles approaching from the park-
ing spaces next to your vehicle*
●The distance between the sensor and
approaching vehicle gets too close*: Depending on the conditions, detec-
tion of a vehicle and/or object may
occur.
■Situations in which the system may not operate properly
The RCTA function may not detect vehi-
cles correctly in the following situations:
●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 its 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 approach-
ing 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 addi-
tional trim strip, etc.), bicycle carrier, or snow plow
●When backing up on a slope with a sharp change in grade
●When backing out of a sharp angle
parking spot
●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

3164-5. Using the driving support systems
●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 turning while backing up
●When a vehicle turns into the detec-
tion area
■Situations in which the system may
operate even if there is no possibil- ity of a collision
Instances of the RCTA function unnec-
essary detecting a vehicle and/or object may increase in the following situations:
●When the parking space faces a street and vehicles are being driven on the
street
●When the distance between your vehi-
cle and metal objects, such as a
guardrail, wall, sigh, or parked vehi-
cle,which may reflect electrical waves toward the rear of the vehicle, is short
●When equipment that may obstruct a
sensor is installed, such as a towing eyelet, bumper protector (an addi-
tional trim strip, et c.), bicycle carrier,or
snow plow
●When a vehicle passes by the side of
your vehicle
●When a detected vehicle turns while
approaching the vehicle
●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 vehi-
cle and a guardrail, wall, etc., that
enters the detection area is short
●Gratings and gutters

317
4
4-5. Using the driving support systems
Driving
●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
*: If equipped
■Parking Support Brake func-
tion (static objects) (if
equipped)
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. 3 2 4 )
■Parking Support Brake func-
tion (rear-crossing vehicles) (if
equipped)
Rear radar sensors are used to
detect approaching vehicles in the
PKSB (Parking Suppor t
Brake)*
The Parking Support Brake
system consists of the follow-
ing 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 determines that the
possibility of a collision with a
detected object is extremely
high, the brakes are automati-
cally applied to help avoid the
collision or help reduce the
impact of the collision.
PKSB (Parking Support
Brake) system

3184-5. Using the driving support systems
detection area behind the vehicle
when backing up. ( P.327)
The Parking Support Brake can be
enabled/disabled on the multi-infor-
mation display. All of the Parking
WA R N I N G
■Cautions regarding the use of
the system
Do not overly rely on the system, as
doing so may lead to an accident.
●The driver is solely responsible for safe driving. Always drive carefully,
taking care to observe your
surroundings. The Parking Support Brake system is designed to pro-
vide support to lessen the severity
of collisions. However, it may not operate in some situations.
●The Parking Support Brake system is not designed to stop the vehicle
completely. Additionally, even if the
system has stopped the vehicle, it is necessary to depress the brake
pedal immediately as brake control
will be canceled after approximately 2 seconds.
●It is extremely dangerous to check the system operatio ns by intention-
ally driving the vehicle into the
direction of a wall, etc. Never attempt such actions.
■When to disable the Parking Sup-port Brake
In the following situations, disable the
Parking Support Br ake as the system may operate even though there is no
possibility of a collision.
●When inspecting the vehicle using
a chassis roller, chassis dynamo or
free roller
●When loading the vehicle onto a
boat, truck or other transport vessel
●If the suspension has been modi-
fied 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 equipment that may obstruct a sensor is installed, such as a tow-
ing eyelet, bumper protector (an
additional trim strip, etc.), bicycle carrier, or snow plow
●When using automatic car washing devices
●If the vehicle cannot be driven in a stable manner, such as when the
vehicle has been in an accident or
is malfunctioning
●When the vehicle is driven in a
sporty manner or off-road
●When the tires are not properly
inflated
●When the tires are very worn
●When a tire chains, compact spare
tire or an emergency tire puncture
repair kit is used
NOTICE
■If “Parking Support Brake Una- vailable” is displayed on the
multi-information display and the
PKSB OFF indicator is flashing
If this message is displayed immedi-
ately after the engine switch is
changed to ON, operate the vehicle carefully, paying attention to your
surroundings. It may be necessary to
drive the vehicle for a certain amount of time before the system returns to
normal. (If the system does not return
to normal after driving for a while, clean the sensors and their surround-
ing area on the bumpers.)
Enabling/Disabling the Park-
ing Support Brake

3224-5. Using the driving support systems
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is
high
Engine output reduced
System determines that possibility of collision with detected object is
extremely high
Brake control begins operating
Brake control strength increased
Example: Multi-informat ion display: “Brake!”
Example: Multi-information di splay: “Switch to Brake”
■If the Parking Support Brake has operated
If the vehicle is stopped due to operation
of the Parking Support Brake, the Park- ing Support Brake will be disabled and
the PKSB OFF indicator will illuminate. If
the Parking Support Brake operates unnecessarily, brake control can be
canceled by depressing the brake pedal
or waiting for approximately 2 seconds for it to automatically be canceled. Then,
the vehicle can be operated by depress-
ing the accelerator pedal.
■Re-enabling the Parking Support Brake
To re-enable the Parking Support Brake
when it is disabled due to operation of the Parking Support Brake, either ena-
ble the system again ( P.318), or turn
the engine switch off and then back to ON. Additionally, if the object becomes
no longer in the traveling direction of the
vehicle or if the traveling direction of the vehicle changes (such as changing from
moving forward to backing up, or from
backing up to moving forward), the sys-
tem will be re-enabled automatically.
■If “Parking Support Brake Unavaila-
ble” is displayed on the multi-infor- mation display and the PKSB OFF
indicator is flashing
●If this message is displayed, a sensor
on the front or rear bumper may be
dirty. Clean the sensors and their sur- rounding area on the bumpers.
■If “Parking Support Brake Unavaila-
ble” and “Parking Assist Unavaila-
ble Clean Parking Assist Sensor” are displayed on the multi-informa-
tion display and the PKSB OFF
indicator is flashing
●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. If this message
continues to be displayed even after cleaning the sensor, or is displayed
even though the sensor is clean, have
the vehicle inspected by any author- ized Toyota retailer or Toyota author-
ized repairer, or any reliable repairer.
●A sensor may be frozen. Once the ice
melts, the system will return to nor-
mal.
●Water may be continuously flowing
over the sensor surface, such as in a heavy rain. When the system deter-
mines that it is normal, the system will

3244-5. Using the driving support systems
*: If equipped
This function will operate in situations such as the following if an object is
detected in the traveling direction of the vehicle.
■When traveling at a low speed and the brake pedal is not
depressed, or is depressed late
Parking Suppor t Brake function (static objects)*
If the sensors detect a static object, such as a wall, in the travelling
direction of the vehicle and the system determines that a collision
may occur due to the vehicle suddenly moving forward due to an
accidental accelerator pedal oper ation, the vehicle moving the unin-
tended direction due to the wrong shift lever being selected, or while
parking or traveling at low speeds, the system will operate to lessen
the impact with the detected static object and reduce the resulting
damage.
Examples of function operation

325
4
4-5. Using the driving support systems
Driving
■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to the
wrong shift lever being selected
 P. 3 0 3
Types of sensors
WA R N I N G
■To ensure the system can oper- ate properly
 P.305
■If the Parking Support Brake function (static objects) oper-
ates unnecessarily, such as at a
railroad crossing
 P. 3 2 2
■Notes when washing the vehicle
 P. 3 0 5