2022 TOYOTA YARIS Owners Manual

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4-5. Using the driving support systems
Driving
■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 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 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
●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:

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●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 vehicle,
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, etc.), 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
●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

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4-5. Using the driving support systems
Driving
*: If equipped
■Parking Support Brake func-
tion (static objects)
 P. 2 7 0
■Parking Support Brake func-
tion (rear-crossing vehicles)
 P. 2 7 3
PKSB (Parking Support
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 the possibility
of a collision with a detected
object is high, a warning oper-
ates 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 automatically
applied to help avoid the colli-
sion or help reduce the impact
of the collision.
PKSB (Parking Support
Brake) system
WARNING
■Cautions regarding the use of the system
Do not overly rely on the system, as doing so may lead to an accident.
Always drive while checking the
safety of the surroundings of the vehi- cle.
Depending on the vehicle and road
conditions, weather, etc., the system may not operate.
The detection capabilities of sensors
and radars are limited. Always drive while checking the safety of the sur-roundings of the vehicle.
●The driver is solely responsible for safe driving. Always drive carefully,
taking care to observe your sur- roundings. 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 operations 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 Brake 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

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4-5. Using the driving support systems
The Parking Support Brake can be
enabled/disabled on the multi-infor-
mation display. All of the Parking
Support Brake functions (static
objects and rear-crossing vehicles)
are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. ( P.104, 110)
1 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select and then press .
WARNING
●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 “PKSB Unavailable” is dis-played on the multi-information
display and the PKSB OFF indi- cator is on
If this message is displayed immedi-
ately after the power switch is changed to ON, operate the vehicle carefully, paying attention to your sur-
roundings. It may be necessary to drive the vehicle for a certain amount of time before the system returns to
normal. (If the system is not return to normal after driving for a while, clean the sensors and their surrounding
area on the bumpers.)
Enabling/Disabling the Park-
ing Support Brake

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4-5. Using the driving support systems
Driving
When the Parking Support Brake is dis-
abled, the PKSB OFF indicator ( P. 9 2 ) illuminates.
To re-enable the system when it was
disabled, select on the multi-infor-
mation display, select and then
On. If disabled using this method, the
system will not be re-enabled by turning
the power switch off and then to ON.
If the hybrid system output restric-
tion control or brake control oper-
ates, a buzzer will sound and a
message will be displayed on the
multi-information display and head-
up display (if equipped) to alert the
driver.
Depending on the situation, hybrid sys-
tem output restriction control will oper-
ate to either limit acceleration or restrict
output as much as possible.
 Hybrid system output restriction
control is operating (accelera-
tion restriction)
Acceleration greater than a certain
amount is restricted by the system.
Multi-information display: “Object
Detected Acceleration Reduced”
Head-up display (if equipped): No
warning displayed
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 stron-
ger-than-normal brake operation is nec-
essary.
Multi-information display and head-up
display (if equipped): “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
 Brake control is operating
The system determined that emer-
gency braking is necessary.
Multi-information display and head-up
display (if equipped): “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
 Vehicle stopped by system oper-
ation
The vehicle has been stopped by brake
control operation.
Multi-information display and head-up
display (if equipped): “Switch to Brake”
(If the accelerator pedal is not
depressed, “Press Brake Pedal” will be
displayed.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep
If the Parking Support Brake deter-
mines that a collision with a
detected object is possible, the
hybrid system output will be
restricted to restrain any increase in
the vehicle speed. (Hybrid system
output restriction control: See figure
2.)
Additionally, if the accelerator pedal
continues to be depressed, the
Display and buzzer for
hybrid system output
restriction control and brake
control
System overview

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4-5. Using the driving support systems
brakes will be applied automatically
to reduce the vehicle speed. (Brake
control: See figure 3.)
 Figure 1: When the PKSB (Park-
ing Support Brake) is not operat-
ing
Hybrid system output
Braking force
Time
 Figure 2: When hybrid system
output restriction control oper-
ates
Hybrid system output
Braking force
Time
Hybrid system output restriction
control begins operating (Sys-
tem determines that possibility
of collision with detected object
is high)
 Figure 3: When engine output
restriction control and brake con-
trol operates
Hybrid system output
Braking force
Time
Hybrid system output restriction
control begins operating (Sys-
tem determines that possibility
of collision with detected object
is high)
Brake control begins operating
(System determines that possi-
bility of collision with detected
object is extremely high)
■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 can- celed by depressing the brake pedal or waiting for approximately 2 seconds for

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4-5. Using the driving support systems
Driving
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
enable the system again ( P.266), or turn the power 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 mov-ing forward), the system will be re-
enabled automatically.
■If “PKSB Unavailable” is displayed on the multi-information display and the PKSB OFF indicator is on
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.
●A sensor may be covered with water
drops, ice, snow, dirt, etc. Remove the water drops, ice, snow, dirt, etc., from the sensor to return the system to nor-
mal. 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 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 this message continues to be dis-played even after cleaning the sensor,
or is displayed even though the sen- sor is clean, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
■If a 12-volt battery terminal has
been disconnected and recon- nected
The system needs to be initialized. To
initialize the system, drive the vehicle straight ahead for 5 seconds or more at a speed of approximately 35 km/h (22
mph) or more.

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4-5. 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 Support Brake function (static objects)*
If the sensors detect a static object, such as a wall, in the traveling
direction of the vehicle and the system determines that a colli sion
may occur due to the vehicle suddenly moving forward due to an
accidental accelerator pedal operation, the vehicle moving the unin-
tended direction due to the wrong shift position being selected, or
while parking or traveling at low speeds, the system will opera te to
lessen the impact with the detected static object and reduce th e
resulting damage.
Examples of function operation