sensor LEXUS ES300h 2022 Service Manual

2274-5. Using the driving support systems
4
Driving
OWhen tire chains, a compact spare tire or
an emergency tire puncture repair kit are
used.
QDetection range of the sensorsApproximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 2.0 ft. (60 cm)
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.
QMulti-information display, head-up disp
lay (if equipped) and Center Display
When an object is detected by a sensor, the approximate distance to the object will
be displayed on the multi-information display, Center Display, and head-up dis-
play. (As the distance to the object be comes short, the distance segments may
blink.)
 Approximate distance to object: 4.9 ft. (150 cm) to 2.0 ft. (60 cm)
*(Rear center
sensor)
Sensor detection display, object
distance
A
B
C
Multi-information displayCenter DisplayHead-up display

2284-5. Using the driving support systems
*: Automatic buzzer mute function is enabled. (P.229)
 Approximate distance to object: 3.3 ft. (100 cm) to 2.0 ft. (60 cm)* (Front cen-
ter sensor)
*: Automatic buzzer mute function is enabled. ( P.229)
 Approximate distance to object: 2.0 ft. (60 cm) to 1.5 ft. (45 cm)*
*: Automatic buzzer mute function is enabled. ( P.229)
 Approximate distance to object: 1.5 ft. (45 cm) to 1.0 ft. (30 cm)*
*: Automatic buzzer mute function is enabled. ( P.229)
 Approximate distance to object: 1.0 ft. (30 cm) to 0.5 ft. (15 cm)*1
*1: Automatic buzzer mute function is disabled. ( P.229)
*2: The distance segments will blink slowly.
Multi-information displayCenter DisplayHead-up display
Multi-information displayCenter DisplayHead-up display
Multi-information displayCenter DisplayHead-up display
Multi-information display*2Center Display*2Head-up display

2294-5. Using the driving support systems
4
Driving
Approximate distance to object: Less than 0.5 ft. (15 cm)*1
*1: Automatic buzzer mute function is disabled. ( P.229)
*2: The distance segments will blink rapidly.
QBuzzer operation and distance to
an object
A buzzer sounds when the sensors are
operating.
 The buzzer beeps faster as the vehi-
cle approaches an object. When the
vehicle comes within the following
distance of the object, the buzzer
sounds continuously:
Approximately 1.0 ft. (30 cm)
When 2 or more objects are
detected simultaneously, the buzzer
sounds for the nearest object. If one
or more objects come within
approximately 1.0 ft. (30 cm) of the
vehicle, the buzzer will repeat a long
tone, followed by fast beeps.
 Automatic buzzer mute function:
After a buzzer begins sounding, if
the distance between the vehicle
and the detected object does not
become shorter, the buzzer will be
muted automatically. (However, if
the distance between the vehicle
and object is 1.0 ft. [30 cm] or less,
this function will not operate.)
The buzzer sounds volume can be
adjusted. ( P.222)
Multi-information display*2Center Display*2Head-up display

2304-5. Using the driving support systems
Meter control switches
Turn the RCTA function on/off.
When the RCTA function is disabled, the
RCTA OFF indicator illuminates.
Outside rear view mirror indicators
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.
Center Display
If a vehicle approaching from the right or
left at the rear of the vehicle is detected,
the RCTA icon (P.232) for the detected
side will be displayed on the Center Dis-
play. This illustration shows an example of a
vehicle approaching from both sides of the
vehicle.
RCTA buzzer
If a vehicle approaching from the right or
left at the rear of the vehicle is detected, a
buzzer will sound.
RCTA (Rear Cross Traffic
Alert) function
The RCTA function uses the BSM
rear side radar sensors installed on
the inner side of the rear bumper.
This function is intended to assist
the driver in checking areas that
are not easily visible when backing
up.
WARNING
QCautions regarding the use of the
system
There is a limit to the degree of recogni-
tion accuracy and control performance
that this system can provide, do not
overly rely on this system. The driver is
always responsible for paying attention
to the vehicle’s surroundings and driving
safely. ( P.214)
QTo ensure the system can operate
properly
 P.215
System components
A
B
C
D

2314-5. Using the driving support systems
4
Driving
Use the meter control switches to
enable/disable the RCTA function.
( P.86)
Vehicles without the Intuitive park-
ing assist
1 Press or to select .
2 Press or to select “RCTA”
and then press “OK”.
3 Press or to select “RCTA”
and then press “OK”.
Vehicles with the Intuitive parking
assist
1 Press or to select .
2 Press or to select “PKSA”
and then press “OK”.
3 Press or to select “RCTA”
and then press “OK”.
When the RCTA function is disabled, the
RCTA OFF indicator ( P.74) illuminates
on the multi-information display. (Each time the power switch is turned off then
changed to ON mode, the RCTA function
will be enabled automatically.)
QOutside rear view mirror indicator visi-
bility
In strong sunlight, the outside rear view mir-
ror indicator may be difficult to see.
QHearing the RCTA buzzer
The RCTA buzzer may be difficult to hear
over loud noises, such as if the audio system
volume is high.
QWhen “Rear Cross Traffic Alert
Unavailable” is shown on the multi-
information display
Ice, snow, mud, etc., may be attached to the
rear bumper around the sensors. ( P.215)
Remove the ice, snow, mud, etc., attached
to the rear bumper around the sensors to
return the function to normal. Additionally,
the sensors may not operate normally when
driving in extremely hot or cold environ-
ments.
QRear side radar sensors
 P.215
QOperation 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 ve hicle and alerts the driver of the presence
of such vehicles by flashing the outside rear view mirror indicators and sounding a
buzzer.
Turning the RCTA function
on/off
NOTICE
QBefore using the RCTA function
Do not place obstacles near the sensors.
RCTA function

2334-5. Using the driving support systems
4
Driving
QThe RCTA function is operational when
The RCTA function operates when all of the
following conditions are met:
OThe power switch is in ON mode.
OThe RCTA function is on.
OThe shift lever is in R.
OThe vehicle speed is less than approxi-
mately 5 mph (8 km/h).
OThe approaching vehicle speed is
between approximately 5 mph (8 km/h)
and 18 mph (28 km/h).
QSetting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display.
Use the meter control switches to change
settings. ( P.86)
Vehicles without the Intuitive parking
assist
1 Press or to select .
2 Press or to select “RCTA”,
then press “OK”.
3 Press or to select and then
press “OK”.
Each time the switch is pressed, the volume
level will change between 1, 2 and 3.
Vehicles with the Intuitive parking assist
 P.222
QMuting a buzzer temporarily
Vehicles without the Intuitive parking
assist
A mute button will be displayed on the
multi-information display when an object is
detected. To mute the buzzer, press “OK”.
OWhen the shift lever is changed.
OWhen the vehicle speed exceeds a cer-
tain speed.
OWhen the operating function is tempo-
rarily canceled.
OWhen the operating function is disabled
manually.
OWhen the power switch is turned off.
Vehicles with the Intuitive parking assist
 P.222
QConditions under wh ich the system will
not detect a vehicle
The RCTA function is not designed to
detect the following types of vehicles
and/or objects:
OVehicles approaching from directly
behind
OVehicles backing up in a parking space
next to your vehicle
OVehicles that the sensors cannot detect
due to obstructions
OGuardrails, walls, signs, parked vehicles
and similar stationary objects*
OSmall motorcycles, bicycles, pedestrians,
etc.*
OVehicles moving away from your vehicle
OVehicles approaching from the parking
spaces next to your vehicle*
OThe distance between the sensor and
approaching vehicle gets too close
*: Depending on the conditions, detection of a vehicle and/or object may occur.
QSituations in which the system may not
operate properly
The RCTA function may not detect vehicles
correctly in the following situations:
OWhen the sensor is misaligned due to a
strong impact to the sensor or its sur-
rounding area.
OWhen mud, snow, ice, a sticker, etc., is
covering the sensor or surrounding area
on the rear bumper.
OWhen driving on a road surface that is
wet with standing water during bad

2344-5. Using the driving support systems
weather, such as heavy rain, snow, or fog.
OWhen multiple vehicles are approaching
with only a small gap between each vehi-
cle.
OWhen a vehicle is approaching at high
speed.
OWhen equipment that may obstruct a
sensor is installed, such as a towing eye-
let, bumper protector (an additional trim
strip, etc.), bicycle carrier, or snow plow.
OWhen backing up on a slope with a sharp
change in grade.
OWhen backing out of a sharp angle park-
ing spot.
OWhen towing a trailer.
OWhen there is a significant difference in
height between your vehicle and the
vehicle that enters the detection area.
OWhen a sensor or the area around a sen-
sor is extremely hot or cold.
OIf the suspension has been modified or
tires of a size other than specified are
installed.
OIf the front of the vehicle is raised or low-ered due to the carried load.
OWhen turning while backing up.
OWhen a vehicle turns into the detection
area.
QSituations in which the system may
operate even if there is no possibility of a
collision
Instances of the RCTA function unneces-
sarily detecting a vehicle and/or object may
increase in the following situations:
OWhen the parking space faces a street
and vehicles are being driven on the
street.
OWhen the distance between your vehicle
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.

2354-5. Using the driving support systems
4
Driving
OWhen equipment that may obstruct a
sensor is installed, such as a towing eye-
let, bumper protector (an additional trim
strip, etc.), bicycle carrier, or snow plow.
OWhen a vehicle passes by the side of your
vehicle.
OWhen a detected vehicle turns while
approaching the vehicle.
OWhen there are spinning objects near
your vehicle such as the fan of an air con-
ditioning unit.
OWhen water is splashed or sprayed
toward the rear bumper, such as from a
sprinkler.
OMoving objects (flags, exhaust fumes,
large rain droplets or snowflakes, rain
water on the road surface, etc.).
OWhen the distance between your vehicle
and a guardrail, wall, etc., that enters the
detection area is short.
OGratings and gutters.
OWhen a sensor or the area around a sen-
sor is extremely hot or cold.
OIf the suspension has been modified or
tires of a size other than specified are
installed.
OIf the front of the vehicle is raised or low-
ered due to the carried load.

2394-5. Using the driving support systems
4
Driving
the audio system volume is high, the air
conditioning system is being used, etc.
• If the temperature in the cabin is
extremely high or low, the Center Dis-
play may not operate correctly.
*: If equipped
QParking 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.246)
QParking Support Brake function
(rear-crossing vehicles)
Rear radar sensors are used to detect
approaching vehicles in the detection
area behind the vehicle when backing
up. ( P.249)
PKSB (Parking Support
Brake)
*
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 deter-
mines that the possibility of a colli-
sion with a detected object or
pedestrian is high, a warning oper-
ates to urge the driver to take eva-
sive action. If the system
determines that the possibility of a
collision with a detected object or
pedestrian 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

2404-5. Using the driving support systems
QParking Support Brake function
(rear pedestrians) (if equipped)
A rear camera sensor is used to detect
pedestrians in the detection area
behind the vehicle when backing up.
(  P.251)
WARNING
QCautions 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 vehicle.
Depending on the vehicle and road con-
ditions, weather, etc., the system may not
operate.
The detection capabilities of sensors and
radars are limited. Always drive while
checking the safety of the surroundings
of the vehicle.
OThe driver is solely responsible for safe
driving. Always drive carefully, taking
care to observe your surroundings.
The Parking Support Brake system is
designed to provide support to lessen
the severity of collisions. However, it
may not operate in some situations.
OThe Parking Support Brake system is
not designed to stop the vehicle com-
pletely. Additionally, even if the system
has stopped the vehicle, it is necessary
to depress the brake pedal immedi-
ately as brake control will be canceled
after approximately 2 seconds.
OIt is extremely dangerous to check the
system operations by intentionally
driving the vehicle in to the direction of
a wall, etc. Never attempt such actions.
QWhen to disable the Parking Support
Brake
In the following situations, disable the
Parking Support Brake as the system
may operate even though there is no
possibility of a collision.
OWhen inspecting the vehicle using a
chassis roller, chassis dynamo or free
roller.
OWhen loading the vehicle onto a boat,
truck or other transport vessel.
OIf the suspension has been modified or
tires of a size other than specified are
installed.
OIf the front of the vehicle is raised or
lowered due to the carried load.
OWhen 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.
OWhen using automatic car washing
devices.
OIf the vehicle cannot be driven in a sta-
ble manner, such as when the vehicle
has been in an accident or is malfunc-
tioning.
OWhen the vehicle is driven in a sporty
manner or off-road.
OWhen the tires are not properly
inflated.
OWhen the tires are very worn.
OWhen tire chains, a compact spare tire
or an emergency tire puncture repair
kit are used.