2020 Lexus ES300h systems information

2224-5. Using the driving support systems
■Outside rear view mirror indicator visi-
bility
In strong sunlight, the outside rear view mir-
ror 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” is shown on the multi-
information display
Ice, snow, mud, etc., may be attached to the
rear bumper around the sensors.
(  P.209) 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 environments.
■Rear side radar sensors
 P.209
■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
WARNING
■Cautions regarding the use of the
function
The driver is solely responsible for safe
driving. Always driv e safely, taking care
to observe your surroundings.
The RCTA function is only a supplemen-
tary 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 cor-
rectly under certain conditions, the
driver’s own visual confirmation of safety
is necessary. Over reli ance on this func-
tion may lead to an accident resulting
death or serious injury.
NOTICE
■Before using the RCTA function
Do not place obstacles near the sensors.
RCTA function
A
B

2234-5. Using the driving support systems
4
Driving
■RCTA icon display
When a vehicle approaching from the
right or left at the rear of the vehicle is
detected, the following will be dis-
played on the Center Display.
Example (Lexus parking assist monitor) (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 power switch is in ON mode.
●The RCTA function is on.
●The shift lever 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.
Use the meter control switches to change
settings. ( P.80)
Vehicles without the Intuitive parking
assist
1 Press or to select .
2 Press or to select “Vehicle Set-
tings”, 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.214
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

2244-5. Using the driving support systems
■Muting 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”.
●When the shift lever is changed.
●When the vehicle speed exceeds a cer-
tain speed.
●When the operating function is tempo-
rarily canceled.
●When the operating function is disabled
manually.
●When the power switch is turned off.
Vehicles with the Intuitive parking assist
 P.214
■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
●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 the 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 the sensor or 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

2264-5. Using the driving support systems
2Press or to select “PKSA”
and then press “OK”.
3 Press or to select “RCD”
and then press “OK”.
When the RCD function is disabled, the
RCD OFF indicator ( P.73) illuminates
on the multi-information display.
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 power switch is in ON mode.
●RCD function is on.
●The shift lever is in R.
■Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. ( P.214)
The RCD buzzer sound is linked with the
RCTA buzzer.
■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 12-
volt battery has been disconnected and
reconnected, fully turn the steering wheel
to the left and then the right on level
ground.
●If this message is di splayed only when the
shift lever is in R, the rear camera 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
When a pedestrian is detected
A
A
B
B
C
C

2294-5. Using the driving support systems
4
Driving
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 pedestri-
ans) are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. (P.80)
1 Press or to select .
2 Press or to select and
then press “OK”.
When the Parking Support Brake is dis-
abled, the PKSB OFF indicator ( P.73)
illuminates on the multi-information dis-
play.
To re-enable the system, select on the
multi-information disp lay, select and
turn it on. If the system is disabled, it will
remain off even if the power switch is
turned to ON mode after the power switch
has been turned off.
If the hybrid system output restriction con-
trol or brake control operates, a buzzer will
sound and a message will be displayed on
the Center Display and multi-information
display, 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, hybrid system output restriction control will operate to
either limit acceleration or restrict output
as much as possible.

Hybrid system 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
Hybrid system output restriction
control is operating (output
restricted as much as possible)
The system has determined that stronger-
than-normal brake operation is necessary.
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):
Enabling/Disabling the Parking
Support Brake
Displays and buzzers for hybrid
system output restriction con-
trol and brake control

2304-5. Using the driving support systems
“Press Brake Pedal”
Multi-information display: “Switch to
Brake” (If the accelerator pedal is not
depressed, “Press Brake Pedal” will be dis-played.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep
If the Parking Support Brake
determines that a collision with a detected object or
pedestrian 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 below.)
Additionally, if the accelerator pedal contin ues to be depressed, the brakes will be
applied automatically to re duce the vehicle speed. (Brake control: See figure 3
below.)
 Figure 1 When the PKSB (Parki ng Support Brake) is disabled
Hybrid system output
Braking force
Time
 Figure 2 When hybrid system ou tput restriction control operates
System overview
A
B
C

2314-5. Using the driving support systems
4
Driving
Hybrid system output
Braking force
Time
Hybrid system output restriction control begins operating
System determines that po ssibility of collision with detected object is high
Hybrid system output reduced
Example: Multi-information display:
“BRAKE!”
 Figure 3 When brake control operates
Hybrid system output
Braking forceA
B
C
D
E
F
G
A
B

2324-5. Using the driving support systems
Time
Hybrid system output restriction control begins operating
System determines that po ssibility of collision with detected object is high
Hybrid system output reduced
System determines that possibility of col lision with detected object is extremely
high
Brake control begins operating
Brake control strength increased
Example: Multi-informat ion display: “BRAKE!”
Example: Multi-information display: “Switch to Brake”
■If the Parking Support Brake has oper-
ated
If the vehicle is stopped due to operation of
the Parking Support Brake, the Parking
Support Brake will be disabled and the
PKSB OFF indicator will illuminate. If the
Parking Support Brake operates unneces-
sarily, brake control can be canceled by
depressing the brake pedal or waiting for
approximately 2 seconds for it to automati-
cally be canceled. Then, the vehicle can be
operated by depressing the accelerator
pedal.
■Re-enabling the Park ing Support Brake
To re-enable the Parking Support Brake
when it has been disabled due to system
operation, perform any of the following
operations. At this time, the PKSB OFF indi-
cator will turn off. ( P.73)
●Turn the PKSB system on ( P.229)
●Turn the power switch off, and then back
to ON mode
●Shift the shift lever to P
●Drive with no operation targets in the
traveling direction of the vehicle
●Change the traveling direction of the
vehicle*
*
: Except the Parking Support Brake func- tion (rear pedestrian)
■If “Parking Support Brake Unavailable”
is displayed on th e multi-information
display and the PKSB OFF indicator is
flashing
●If this message is di splayed only when the
shift lever is in R, the rear camera lens
may be dirty. Clean the camera lens. If
this message is disp layed when the shift
lever is in any position other than R, a sen-
sor on the front or rear bumper may be
dirty. Clean the sensors and their sur-
rounding area on the bumpers.
●Initialization may not have been per-
formed after a 12-volt battery terminal
was disconnected and reconnected. Ini-
tialize the system. ( P.233)
If this message continues to be displayed
even after initializati on, have the vehicle
inspected by your Lexus dealer.
■If “Parking Support Brake Unavailable”
and “Parking Assist Unavailable Clean
Parking Assist Sensor” are displayed on
the multi-information display and the
PKSB OFF indicator is flashing
●A sensor may be cove red with ice, snow,
dirt, etc. In this case, remove the ice,
snow, dirt, etc., from the sensor to return
the system to normal. If this message is
shown even after removing dirt from the
sensor, or shown when the sensor was
not dirty to begin with, have the vehicle
inspected at your Lexus dealer.
●A sensor may be frozen. Once the ice
C
D
E
F
G
H
I
J
K