sensor TOYOTA YARIS 2021 Service Manual

245
4
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Driving
●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 sen-
sor’s detection areas before the dis- play 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.
■Conditions under which the func-
tion may not function correctly
Certain vehicle conditions and the sur- rounding 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, water drops 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
displayed abnormally, or objects, such as a wall, may not be detected.
●A sensor is covered in any way.
●When a sensor or the area around a
sensor is extremely hot or cold.
●On an extremely bumpy road, on an
incline, on gravel, or on grass.
●The vicinity of the vehicle is noisy due
to vehicle horns, motorcycle engines, air brakes of large vehicles, or other loud noises producing ultrasonic
waves.
●There is another vehicle equipped
with parking assist sensors in the vicinity.
●A sensor is coated with a sheet of spray or heavy rain.
●If a sensor is hit by a large amount of water, such as when driving on a
flooded road.
●If the vehicle is significantly tilted.
●The vehicle is approaching a tall or curved curb.
●If objects draw too close to the sensor.
■Objects which may not be properly detected
The shape of the object may prevent the
sensor from detecting it. Pay particular 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 pro- jecting outwards in the direction of your vehicle
People may not be detected if they are wearing certain types of clothing.
■Detection range of the sensors
Approximately 100 cm (3.3 ft.)
Approximately 150 cm (4.9 ft.)
Sensor detection display,
object distance

246
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Approximately 60 cm (2.0 ft.)
The diagram shows the detection range
of the sensors. Note that the sensors
cannot detect objects that are extremely close to the vehicle.
The range of the sensors may change
depending on the shape of the object,
etc.
■The distance and buzzer
*: Automatic buzzer mute function is enabled. (→P.246)
■Buzzer operation and dis-
tance to an object
A buzzer sounds when the sensors
are operating.
zThe 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.
zWhen 2 or more objects are
detected simultaneously, the
buzzer sounds for the nearest
object.
zEven when the sensors are oper-
ating, the buzzer will be muted in
some situations. (automatic
buzzer mute function)■Adjusting the buzzer volume
The buzzer volume can be adjusted
on the multi-information display.
Use the meter control switches to
change settings. (→P.94, 100)
1Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select and then press and
hold .
Approximate distance to obstacleBuzzer
Front sensor:
100 cm to 60 cm (3.3 ft. to 2.0 ft.)
*
Rear sensor:
150 cm to 60 cm (4.9 ft. to 2.0 ft.)
*
Slow
60 cm to 45 cm (2.0 ft. to 1.5 ft.)*Medium
45 cm to 30 cm (1.5 ft. to 1.0 ft.)*Fast
30 cm to 15 cm (1.0 ft. to 0.5 ft.)ContinuousLess than 15 cm (0.5 ft.)

247
4
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Driving
3Select the volume and then
press .
Each time the switch is pressed, the volume 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 (if
equipped) will be muted simultane-
ously.
Mute will be canceled automatically
in the following situations:
z When the shift lever is changed.
z When the vehicle speed exceeds
a certain speed.
z When there is a malfunction in a
sensor or the system is tempo-
rarily unavailable.
z When the operating function is
disabled manually.
z When the engine switch is turned
off.
*: If equipped
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.
WARNING
■Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, tak-ing care to observe your surround-
ings.
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.
System components

248
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Meter control switches
Turning the RCTA function on/off.
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.
Use the meter control switches to
turn on/off the function. (→P.94,
100)
1Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select “RCTA” and then press
.
When the RCTA function is disabled,
the RCTA OFF indicator (→P.84) illumi-
nates. (Each time the engine switch is
turned off then changed to ON, the
RCTA function will be enabled automat-
ically.)
■Outside rear view mirror indicator
visibility
When under 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 “Rear Cross Traffic Alert
Unavailable See Owner’s Manual”
is shown on the multi-information
display
The sensor voltage has become abnor-
mal, or water, snow, mud, etc., may be
built up in the vicinity of the sensor area
of the position above the rear bumper.
(→P.238)
Removing the water, snow, mud, etc.,
from the vicinity of the sensor area
should return it to normal. Also, the sen-
sor may not function normally when
used in extremely hot or cold weather.
■When “Rear Cross Traffic Alert Mal-
function Visit Your Dealer” is
shown on the multi-information
display
There may be a sensor malfunction of
misaligned. Have the vehicle inspected
by any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer.
■Rear side radar sensors
→P. 2 3 8
■Operation of the RCTA func-
tion
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
Turning the RCTA function
on/off
RCTA function

250
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
3.
■Muting a buzzer temporarily
A mute button will be displayed on the
multi-information display when a vehi-
cles or 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 there is a malfunction in a sen-sor or the system is temporarily unavailable.
●When the operating function is dis-abled manually.
●When the engine switch is turned off.
■Conditions under which the RCTA function 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*
*: Depending on the conditions, detec-
tion of a vehicle and/or object may
occur.
■Conditions under which the RCTA function may not function correctly
●The RCTA function may not detect vehicles correctly in the following situ-ations:
• When a sensor is misaligned due to a strong impact to the sensor or its sur-rounding area
• When mud, snow, ice, a sticker, etc., is covering a sensor or its surrounding 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 • If a vehicle is approaching the rear of your vehicle rapidly
• When a towing eyelet is installed to the rear of the vehicle.• When backing up on a slope with a
sharp change in grade
• When backing out of a shallow angle
parking spot

251
4
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Driving
• Immediately after the RCTA function
is turned on • Immediately after the engine is started with the RCTA function on
• When the sensors cannot detect a vehicle due to obstructions
●Instances of the RCTA function unnecessarily detecting a vehicle and/or object may increase in the fol-
lowing situations: • When a vehicle passes by the side of your vehicle
• 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, sign, or parked vehicle, which may reflect electrical waves toward the rear of the vehicle, is short
• When a towing eyelet is installed to the rear of the vehicle
*: If equipped
■Parking Support Brake func-
tion (static objects)
→ P. 2 5 6
■Parking Support Brake func-
tion (rear-crossing vehicles)
→ P. 2 6 2
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 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

252
YARIS(HB) Owner's Manual_Europe_MK0001_en
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.94, 100)
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
■Limitations of the Parking Sup- port Brake 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.
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 engine 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 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

255
4
YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Driving
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.
●Initialization may not have been per-
formed after a battery terminal was
disconnected and reconnected. Initial-
ize the system. (→P.255)
If this message continues to be dis-
played even after initialization, have
the vehicle inspected by any autho-
rized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
■If a battery terminal has been dis-
connected and reconnected
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.

256
YARIS(HB) Owner's Manual_Europe_MK0001_en
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 collision
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 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

257
4
YARIS(HB) Owner's Manual_Europe_MK0001_en
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. 2 4 2
Types of sensorsWARNING
■To ensure the Parking Support Brake can operate properly
Observe the following precautions
regarding the sensors ( →P.242). Fail- ure to do so may cause a sensor to not operate properly, and may cause
an accident.
●Do not modify, disassemble or paint
the sensors.