2018 LEXUS LS500H Owners Manual

2814-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 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 pedes-
trians) are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. ( → P.87)
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.72)
illuminates on the multi-information dis-
play.
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 power switch
off and then to ON mode.
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 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.Enabling/Disabling the Parking
Support Brake
Displays and buzzers for hybrid
system output restriction con-
trol and brake control

282 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) Center Display (Panoramic view monitor):
“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 operatesSystem overview
A
B
C

2834-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving Hybrid system output
Braking force
Time
Hybrid system output restrict ion control begins operating
System determines that po ssibility of collision with detected object is high
Hybrid system output reduced
Example: Multi-infomation display:
“BRAKE!”
 Figure 3 When brake control operates
Hybrid system output
Braking force
Time A
B
C
D
E
F
G
A
B
C

284 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) Hybrid system output restrict ion 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-infomation display:
“BRAKE!”
Example: Multi-infomation 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 is disabled due to operation of the
Parking Support Brake, either enable the
system again ( → P.281), or turn the power
switch off and then back to ON mode.
Additionally, if the ob ject becomes no lon-
ger 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 moving forward), the system will be
re-enabled automatically.
■
If “Parking Support Brake Unavailable”
is displayed on th e multi-information
display and the PKSB OFF indicator is
flashing
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. ●
A sensor may be cove red with ice, snow,
dirt, etc. Remove the ice, snow, dirt, etc.,
from the sensor to return the system to
normal.
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 wi ll return to normal.●
If this message is di splayed only when the
R shift position is selected, the rear cam-
era lens may be dirty. Clean the camera
lens. If this message is displayed in any
forward shift position , a sensor on the
front or rear bumper may be dirty. Clean
the sensors and their surrounding area
on the bumpers. ●
If this message continues to be displayed
even after cleaning the sensor, or is dis-
played even though the sensor is clean,
have the vehicle inspected by your Lexus
dealer. ●
Initialization may not have been per-
formed after a 12-volt battery terminal
was disconnected and reconnected. Ini-
tialize the system. ( → P.284)
If this message continues to be displayed
even after initializati on, have the vehicle
inspected by your Lexus dealer.
■
If a 12-volt battery terminal has been
disconnected and reconnected
The system needs to be initialized. To initial-
ize the system, drive the vehicle straight
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more. D
E
F
G
H
I
J
K

2854-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving Additionally, for vehicles with the Parking
Support Brake function, turn the steering
wheel fully to the left and right with the vehi-
cle stopped.

286 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) *
:If equipped
This function will operate in si tuations 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 lateParking Support Brake function (static objects) *
If the sensors detect a static object, such as a wall, in the travelling 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 oper-
ation, the vehicle moving the unintended direction due to the wrong shift posi-
tion 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

2874-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving ■
When the accelerator peda l is depressed excessively
■
When the vehicle moves in the unintend ed direction due to the wrong shift
position being selected
→ P.266
Types of sensors WARNING
■
To ensure the Parking Support Brake
can operate properly
Observe the following precautions
regarding the sensors ( → P.287). Failure
to do so may cause a sensor to not oper-
ate properly, and may cause an accident. ●
Do not modify, disassemble or paint
the sensors.
●
Do not replace a sensor with a part
other than a genuine part.
●
Do not subject a sensor or its sur-
rounding area to a strong impact.
●
Do not damage the sensors, and
always keep them clean.

288 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) ■
The Parking Support Brake function
(static object) will operate when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
( → P.73, 74) and all of the following condi-
tions are met: ●
Hybrid system output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is 10 mph (15 km/h) or
less.
• There is a static ob ject in the traveling
direction of the vehicle and 6 to 13 ft. (2
to 4 m) away.
• The Parking Support Brake determines
that a stronger-than-normal brake opera-
tion is necessary to avoid a collision. ●
Brake control
• Hybrid system output restriction control
is operating.
• The Parking Support Brake determines
that an immediate brake operation is nec-
essary to avoid a collision.
■
The Parking Support Brake function
(static objects) will stop operating when
The function will stop operating if any of the
following conditions are met:
●
Hybrid system output restriction control
• The Parking Support Brake is disabled.
• The system determines that the collision
has become avoidable with normal brake
operation.WARNING●
If the area around a radar sensor is
subjected to an impact, the system
may not operate properly due to a
sensor malfunction. Have the vehicle
inspected by your Lexus dealer.■
Handling the suspension
Do not modify the suspension, as
changes to the height or inclination of the
vehicle may prevent the sensors from
detecting objects correctly or cause the
system to not operate or operate unnec-
essarily. ■
If the Parking Support Brake function
(static objects) operates unnecessar-
ily, such as at a railroad crossing
In the event that the Parking Support
Brake function (static objects) operates
unnecessarily, such as at a railroad cross-
ing, brake control w ill be canceled after
approximately 2 seconds, allowing you
to proceed forward and leave the area,
brake control can also be canceled by
depressing the brake pedal. Depressing
the accelerator pedal after brake control
is canceled will allow you to proceed for-
ward and leave the area. ■
Notes when washing the vehicle
Do not apply intensive bursts of water or
steam to the sensor area.
Doing so may result in the sensor mal-
functioning.
●
When using a high pressure washer to
wash the vehicle, do not spray the sen-
sors directly, as doing so may cause a
sensor to malfunction.
●
When using steam to clean the vehicle,
do not direct steam too close to the
sensors as doing so may cause a sen-
sor to malfunction.
■
When 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. ●
When inspecting the vehicle using a
chassis roller, chassis dynamo or free
roller ●
When loading the vehicle onto a boat,
truck or other transport vessel ●
If the suspension has been modified or
tires of a size othe r than specified are
installed ●
If the front of the vehicle is raised or
lowered due to the carried load ●
When 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