2021 LEXUS ES350 engine

2234-5. Using the driving support systems
4
Driving
■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 engine switch is turned off.
Vehicles with the Intuitive parking assist
 P.213
■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 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
function 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

2244-5. Using the driving support systems
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
• 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.78)
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

2254-5. Using the driving support systems
4
Driving
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.68) 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 engine switch is in IGNITION 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.213)
The RCD buzzer sound is linked with the
RCTA buzzer.
■If “Rear Camera Detection Unavailable
Remove the Dirt of Rear Camera” is
displayed on the multi-information dis-
play
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
system should return to normal. (It may be
necessary 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
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,
When a pedestrian is detected
A
A
B
B
C
C

2274-5. 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.233)
■Parking Support Brake function
(rear-crossing vehicles) (if
equipped)
Rear radar sensors are used to detect
approaching vehicles in the detection
area behind the vehicle when backing
up. ( P.239)
■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.243)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
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
surroundings. 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.)

2284-5. Using the driving support systems
The Parking Support Brake can be
enabled/disabled on the multi-infor-
mation display. All of the Parking Sup-
port Brake functions (static objects,
rear-crossing vehicles, and rear
pedestrians) are enabled/disabled
simultaneously.
Use the meter control switches to
enable/disable the parking support
brake. ( P.78)
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.68)
illuminates on the multi-information dis-
play.
To re-enable the system, select on the
multi-information display, select and
turn it on. If the system is disabled, it will
remain off even if the engine switch is
turned to IGNTION ON mode after the
engine switch has been turned off.
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
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, 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 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):
“Press Brake Pedal”
Enabling/Disabling the Parking
Support Brake
Displays and buzzers for engine
output restriction control and
brake control

2294-5. Using the driving support systems
4
Driving
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 engine output w ill be restricted to restrain any increase
in the vehicle speed. (Engine output restriction control: Se e 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
Engine output
Braking force
Time
System overview
A
B
C

2304-5. Using the driving support systems
Figure 2 When engine output restriction control operates
Engine output
Braking force
Time
Engine output restriction control begins operating
System determines that po ssibility of collision with detected object is high
Engine output reduced
Example: Multi-information display:
“BRAKE!”
 Figure 3 When brake control operates
Engine output
A
B
C
D
E
F
G
A

2314-5. Using the driving support systems
4
Driving
Braking force
Time
Engine output restriction control begins operating
System determines that po ssibility of collision with detected object is high
Engine 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
indicator will turn off. ( P.68)
●Turn the PKSB system on ( P.228)
●Turn the engine switch off, and then back
to IGNITION 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
sensor 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 battery terminal was dis-
connected and reconnected. Initialize the
system. ( P.232)
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
B
C
D
E
F
G
H
I
J
K