2020 LEXUS LS500H engine

2624-5. Using the driving support systems
may shorten, or detection may be impos-
sible.
• 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 sensor’s
detection areas before the display 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 sounding.
■Conditions under which the function
may not function correctly
Certain vehicle conditions and the sur-
rounding environment may affect the ability
of a sensor to correctly detect objects. Par-
ticular instances where this may occur are
listed below.
●There is dirt, snow 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 dis-
played 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 sen-
sor 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 detectin g 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 project-
ing outwards in the direction of your vehi-
cle
People may not be de tected if they are
wearing certain types of clothing.
■Certification
For vehicles sold in the U.S.A.

2664-5. 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 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.267) 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 th e 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.81)
1 Press or to select .
2 Press or to select “PKSA”
and then press .
3 Press or to select “RCTA”
and then press .
When the RCTA function is disabled, the
RCTA OFF indicator ( P.68) illuminates.
(Each time the engine switch is turned off
then changed to IGNITION ON mode,
the RCTA function will be enabled auto-
matically.)
RCTA (Rear cross traffic
alert) function*
The RCTA function uses the BSM
rear side radar sensors installed
behind the rear bumper. This func-
tion is intended to assist the driver
in checking areas that are not easily
visible when backing up.
System components
A
B
C
Turning the RCTA function
on/off
D

2684-5. Using the driving support systems
played on the Center Display.
Example (Lexus parking assist mon-
itor) (if equipped): Vehicles are
approaching from both sides of the
vehicle
■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 far-
ther 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 IGNITION ON
mode.
●The RCTA function is on.
●The shift position is in R.
●The vehicle speed is less than approxi- mately 5 mph (8 km/h).
●The approaching vehicle speed is
between approximately 5 mph (8 km/h)
and 18 mph (28 km/h).
■Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. ( P.258)
■Conditions under which the RCTA func-
tion 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
Approaching vehi- cle speed Approximate
alert distance
18 mph (28 km/h) (fast)65 ft. (20 m)
5 mph (8 km/h) (slow)18 ft. (5.5 m)
A

2694-5. Using the driving support systems
4
Driving
●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*
*
: Depending on the conditions, detection of a vehicle and/or object may occur.
■Conditions under which the RCTA func-
tion may not function correctly
●The RCTA function may not detect vehi-
cles correctly in the following situations:
• 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 approaching
with only a small gap between each vehi-
cle
• 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
• 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 vehi-
cle due to obstructions
●Instances of the RCTA function unneces-
sarily detecting a vehicle and/or object
may increase in the following 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

2704-5. Using the driving support systems
• When 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
• When a towing eyelet is installed to the
rear of the vehicle
*: If equipped
Pedestrian detection icon
Displayed automatically when a pedestrian
is detected.
RCD OFF icon
When the RCD function is disabled, the
RCD OFF icon illuminates. (Each time the
engine switch is turned off then changed to
IGNITION ON mode, the RCD function
will be enabled automatically.)
Use the meter control switches to
enable/disable the RCD function.
( P.81)
1 Press or to select .
RCD (Rear Camera Detec-
tion) function*
When the vehicle is backing up, the
rear camera detection function can
detect pedestrians in the detection
area behind the vehicle. If a pedes-
trian is detected, a buzzer will
sound and an icon will be displayed
on the Center Display to inform the
driver of the pedestrian.
Center Display
Turning the RCD function on/off
A
B

2714-5. Using the driving support systems
4
Driving
2Press or to select “PKSA”
and then press .
3 Press or to select “RCD”
and then press .
When the RCD function is disabled, the
RCD OFF indicator ( P.68) illuminates.
If the rear camera detection function
detects a pedestrian in the detection
area, the buzzer and pedestrian detec-
tion will operate as follows:
If a pedestrian is detected in area
Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on
If a pedestrian is detected in area
Buzzer (When the vehicle is sta-
tionary): Sounds 3 times
Buzzer (When the vehicle is back-
ing up, when a pedestrian
approaches the rear of the vehicle): Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on
If the system determines that your
vehicle may collide with a pedes-
trian in area
Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on■The rear camera dete
ction function is
operational when
●The engine switch is in IGNITION ON
mode.
●RCD function is on.
●The shift position is in R.
■Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. ( P.258)
■If “Rear Camera Detection Unavailable
Remove the Dirt of Rear Camera” is dis-
played on the multi-information display
A rear camera lens ma y be dirty or covered
with snow or ice. In such cases, if it is
removed from the rear camera lens, the sys-
tem should return to normal. (It may be nec-
essary to drive the vehicle for some time
before the system returns to normal.)
■If “Rear Camera Detection Unavail-
able” is displayed on the multi-informa-
tion display
●If this message is di splayed after the bat-
tery has been disconnected and recon-
nected, fully turn the steering wheel to
the left and then the right on level ground.
●If this message is di splayed only when the
R shift position is selected, the rear cam-
era lens may be dirty. Clean the rear
camera lens.
■Situations in which the system may not
operate properly
●Some pedestrians, such as the following,
may not be detected by the rear camera
detection function, preventing the func-
tion from operating properly:
When a pedestrian is detected
A
A
B
B
C
C

2734-5. Using the driving support systems
4
Driving
*: If equipped
■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.279)
■Parking 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.285)
■Parking 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.289)PKSB (Parking Support
B
rake)*
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 a collision with a
detected object or pedestrian is
high, a warning operates to urge
the driver to take evasive action. If
the system determines that the pos-
sibility 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 colli-
sion.
PKSB (Parking Support Brake)
system
WARNING
■Limitations of the Parking Support
Brake 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 provide 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 com-
pletely. Additionally, even if the system
has stopped the vehicl e, it is necessary
to depress the brake pedal immedi-
ately as brake control will be canceled
after approximately 2 seconds.
NOTICE
■If “Parking Support Brake Unavail-
able” is displayed on the multi-infor-
mation display and the PKSB OFF
indicator is flashing
If this message is displayed immediately
after the engine swit ch is changed to
IGNITION ON mode, operate the vehi-
cle 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 rear camera
lens.)

2744-5. Using the driving support systems
The Parking Support Brake can be
enabled/disabled on the multi-informa-
tion display. All of the Parking Support
Brake functions (static objects,
rear-crossing vehicles, and rear pedes-
trians) are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. (P.81)
1 Press or to select .
2 Press or to select
and then press .
When the Parking Support Brake is dis-
abled, the PKSB OFF indicator ( P.68)
illuminates.
To re-enable the system when it was dis-
abled, select on the multi-information
display, select and then On. If dis-
abled using this method, the system will not
be re-enabled by turning the engine switch
off and then to IGNITION ON mode.
If the engine output restriction control or
brake control operates, a buzzer will sound
and a message will be displayed on the
Center Display and multi-information dis-
play, to alert the driver. On vehicles with a
head-up display, the head-up display will
display the same message as the
multi-information display.
Depending on the situation, engine output
restriction control will operate to either limit acceleration or restrict output as
much as possible.

Engine output restriction control is
operating (acceleration restriction)
Acceleration greater than a certain
amount is restricted by the system.
Center Display (Panoramic view monitor):
No warning displayed
Multi-information display: “Object
Detected Acceleration Reduced”
PKSB OFF indicator: Not illuminated
Buzzer: Does not sound
Engine output restriction control is
operating (output restricted as
much as possible)
The system has determined that stron-
ger-than-normal brake operation is neces-
sary.
Center Display (Panoramic view monitor):
“BRAKE!”
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
Brake control is operating
The system determined that emergency
braking is necessary.
Center Display (Panoramic view monitor):
“BRAKE!”
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
Vehicle stopped by system opera-
tion
The vehicle has been stopped by brake
control operation.
Center Display (Panoramic view monitor):
“Press Brake Pedal”
Enabling/Disabling the Parking
Support Brake
Displays and buzzers for engine
output restriction control and
brake control