LEXUS LS 500H (2019 year). Instruction — part 13
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4-5. Using the driving support systems
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■
If a warning message is displayed on the multi-information display
A system may be temporarily unavailable or there may be a malfunction in the system.
●
In the following situations, perform the actions specified in the table. When the normal
operating conditions are detected, the message will disappear and the system will
become operational.
If the message does not disappear, contact your Lexus dealer.
Situation
Actions
When the area around a sensor is covered
with dirt, moisture (fogged up, covered with
condensation, ice, etc.), or other foreign
matter
To clean the part of the windshield in front of
the front camera , use the windshield wipers
or the windshield defogger of the air condi-
tioning system (
205
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Driving
●
In the following situations, if the situation has changed (or the vehicle has been driven for
some time) and the normal operating conditions are detected, the message will disappear
and the system will become operational.
If the message does not disappear, contact your Lexus dealer.
• When the temperature around the radar sensor is outside of the operational range, such
as when the vehicle is in the sun or in an extremely cold environment
• When the front camera cannot detect objects in front of the vehicle, such as when driving
in the dark, snow, or fog, or when bright lights are shining into the front camera
When the temperature around the front
camera is outside of the operational range,
such as when the vehicle is in the sun or in an
extremely cold environment
If the front camera is hot, such as after the
vehicle had been parked in the sun, use the
air conditioning system to decrease the tem-
perature around the front camera.
If a sunshade was used when the vehicle
was parked, depending on its type, the sun-
light reflected from the surface of the sun-
shade may cause the temperature of the
front camera to become excessively high.
If the front camera is cold, such after the
vehicle is parked in an extremely cold envi-
ronment, use the air conditioning system to
increase the temperature around the front
camera.
The area in front of the front camera is
obstructed, such as when the hood is open
or a sticker is attached to the part of the
windshield in front of the front camera.
Close the hood, remove the sticker, etc. to
clear the obstruction.
Situation
Actions
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*
: If equipped
■
PCS (Pre-Collision System) (vehi-
cles with Lexus Safety System +
2.0)
■
LTA (Lane Tracing Assist)
■
AHB (Automatic High Beam)
■
RSA (Road Sign Assist)
*
*
: If equipped
■
Dynamic radar cruise control with
full-speed range
Two types of sensors, located behind
the front grille and windshield, detect
information necessary to operate the
drive assist systems.
Radar sensor
Front camera
Lexus Safety System + 2.0
*
The Lexus Safety System + 2.0 con-
sists of the following drive assist sys-
tems and contributes to a safe and
comfortable driving experience:
Driving assist system
WARNING
■
Lexus Safety System + 2.0
The Lexus Safety System + 2.0 is
designed to operate under the assump-
tion that the driver will drive safely, and is
designed to help reduce the impact to
the occupants and the vehicle in the case
of a collision or assist the driver in normal
driving conditions.
As there is a limit to the degree of recog-
nition 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.
Sensors
WARNING
■
To avoid malfunction of the radar sen-
sor
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
A
B
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Driving
WARNING
●
Keep the radar sensor and the grille
cover clean at all times.
Radar sensor
Grille cover
If the front of the radar sensor or the front
or back of the grille cover is dirty or cov-
ered with water droplets, snow, etc.,
clean it.
Clean the radar sensor and grille cover
with a soft cloth to avoid damaging them.
●
Do not attach accessories, stickers
(including transparent stickers) or
other items to the radar sensor, grille
cover or surrounding area.
●
Do not subject the radar sensor or its
surrounding area to a strong impact.
If the radar sensor, front grille, or front
bumper has been subjected to a
strong impact, have the vehicle
inspected by your Lexus dealer.
●
Do not disassemble the radar sensor.
●
Do not modify or paint the radar sen-
sor or grille cover.
●
If the radar sensor, front grille, or front
bumper needs to be removed and
installed, or replaced, contact your
Lexus dealer.
A
B
■
To avoid malfunction of the front cam-
era
Observe the following precautions.
Otherwise, the front camera may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
●
Keep the windshield clean at all times.
• If the windshield is dirty or covered
with an oily film, water droplets, snow,
etc., clean the windshield.
• If a glass coating agent is applied to the
windshield, it will still be necessary to
use the windshield wipers to remove
water droplets, etc. from the area of
the windshield in front of the front
camera.
• If the inner side of the windshield
where the front camera is installed is
dirty, contact your Lexus dealer.
●
Do not attach objects, such as stickers,
transparent stickers, etc., to the outer
side of the windshield in front of the
front camera (shaded area in the illus-
tration).
From the top of the windshield to
approximately 0.4 in. (1 cm) below
the bottom of the front camera
Approximately 7.9 in. (20 cm)
(Approximately 4.0 in. [10 cm] to the
right and left from the center of the
front camera)
A
B
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WARNING
●
If the part of the windshield in front of
the front camera is fogged up or cov-
ered with condensation, or ice, use the
windshield defogger to remove the
fog, condensation, or ice. (
●
If water droplets cannot be properly
removed from the area of the wind-
shield in front of the front camera by
the windshield wipers, replace the
wiper insert or wiper blade.
If the wiper inserts or wiper blades need
to be replaced, contact your Lexus
dealer.
●
Do not attach window tint to the wind-
shield.
●
Replace the windshield if it is damaged
or cracked.
If the windshield needs to be replaced,
contact your Lexus dealer.
●
Do not allow liquids to contact the
front camera.
●
Do not allow bright lights to shine into
the front camera.
●
Do not dirty or damage the front cam-
era.
When cleaning the inside of the wind-
shield, do not allow glass cleaner to
contact the lens of the front camera.
Also, do not touch the lens.
If the lens is dirty or damaged, contact
your Lexus dealer.
●
Do not subject the front camera to a
strong impact.
●
Do not change the installation position
or direction of the front camera or
remove it.
●
Do not disassemble the front camera.
●
Do not modify any components of the
vehicle around the front camera
(inside rear view mirror, etc.) or ceiling.
●
Do not attach any accessories to the
hood, front grille or front bumper that
may obstruct the front camera. Con-
tact your Lexus dealer.
●
If a surfboard or other long object is to
be mounted on the roof, make sure
that it will not obstruct the front cam-
era.
●
Do not modify the headlights or other
lights.
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■
Certification
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4-5. Using the driving support systems
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If a warning message is displayed on the multi-information display
A system may be temporarily unavailable or there may be a malfunction in the system.
●
In the following situations, perform the actions specified in the table. When the normal
operating conditions are detected, the message will disappear and the system will
become operational.
If the message does not disappear, contact your Lexus dealer.
Situation
Actions
When the area around a sensor is covered
with dirt, moisture (fogged up, covered with
condensation, ice, etc.), or other foreign
matter
To clean the part of the windshield in front of
the front camera , use the windshield wipers
or the windshield defogger of the air condi-
tioning system (
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4
Driving
●
In the following situations, if the situation has changed (or the vehicle has been driven for
some time) and the normal operating conditions are detected, the message will disappear
and the system will become operational.
If the message does not disappear, contact your Lexus dealer.
• When the temperature around the radar sensor is outside of the operational range, such
as when the vehicle is in the sun or in an extremely cold environment
• When the front camera cannot detect objects in front of the vehicle, such as when driving
in the dark, snow, or fog, or when bright lights are shining into the front camera
When the temperature around the front
camera is outside of the operational range,
such as when the vehicle is in the sun or in an
extremely cold environment
If the front camera is hot, such as after the
vehicle had been parked in the sun, use the
air conditioning system to decrease the tem-
perature around the front camera.
If a sunshade was used when the vehicle
was parked, depending on its type, the sun-
light reflected from the surface of the sun-
shade may cause the temperature of the
front camera to become excessively high.
If the front camera is cold, such after the
vehicle is parked in an extremely cold envi-
ronment, use the air conditioning system to
increase the temperature around the front
camera.
The area in front of the front camera is
obstructed, such as when the hood is open
or a sticker is attached to the part of the
windshield in front of the front camera.
Close the hood, remove the sticker, etc. to
clear the obstruction.
Situation
Actions
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Pedestrian alert
When the system determines that
there is a possibility of a frontal collision
with a stationary or moving pedestrian
in front of your vehicle, a message will
be displayed on the head-up display to
warn the driver.
■
Pre-collision warning
When the system determines that the
possibility of a frontal collision is high, a
buzzer will sound and a warning mes-
sage will be displayed on the
multi-information display to urge the
driver to take evasive action.
■
Pre-collision brake assist
When the system determines that the
possibility of a frontal collision is high,
the system applies greater braking
force in relation to how strongly the
brake pedal is depressed.
■
Pre-collision braking
If the system determines that the possi-
bility of a frontal collision is extremely
high, the brakes are automatically
applied to help avoid the collision or
reduce the impact of the collision.
■
Active steering assist
If the system determines that the possi-
PCS (Pre-Collision System)
(vehicles with Lexus Safety
System + A)
The pre-collision system uses a
front radar sensor and front camera
to detect vehicles and pedestri-
ans/bicyclists in front of your vehi-
cle and front side radar sensors to
detect vehicles approaching from
the front left or right side. When the
system determines that the possi-
bility of a frontal collision with a
vehicle or pedestrian/bicyclist is
high, a warning operates to urge
the driver to take evasive action
and the potential brake pressure is
increased to help the driver avoid
the collision. If the system deter-
mines that the possibility of a frontal
collision with a vehicle or pedes-
trian/bicyclist is extremely high, the
brakes are automatically applied to
help avoid the collision or help
reduce the impact of the collision.
The pre-collision system can be dis-
abled/enabled and the warning tim-
ing can be changed. (
System functions
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Driving
bility of a collision with an object, such
as a guardrail, or pedestrian is high,
even though the brakes are applied,
and that the collision may be avoidable
through steering control, the system
will steer the vehicle automatically to
help avoid the collision or help reduce
the impact of the collision.
■
Pre-collision seat belts (front seat
only)
If the system determines that the possi-
bility of a frontal collision is high, the
system will retract the seat belts. Addi-
tionally, the system may retract the seat
belts if the brakes are applied suddenly
or control of the vehicle is lost.
■
Pre-collision seatbacks (front pas-
senger’s seat / power rear seat [if
equipped])
If the system determines that the possi-
bility of a frontal collision is high, it may
move the seatbacks of the front pas-
senger’s seat and power rear seats to
the upright position automatically, if
reclined.
If a seat is being adjusted, it may not be
moved by the pre-collision seat function.
■
Suspension control
When the system determines that the
possibility of a frontal collision is high,
the Adaptive Variable Suspension Sys-
tem (
P.302) will control the damp-
ing force of the shock absorbers to
help maintain an appropriate vehicle
posture.
■
Steering control
When the system determines that the
possibility of a frontal collision is high
and the driver is operating the steering
wheel, the LDH system (
control the turning angle of the front
and rear wheels and effort necessary
to turn the steering wheel to help
enhance steering responsiveness.
WARNING
■
Limitations of the pre-collision system
●
The driver is solely responsible for safe
driving. Always drive safely, taking
care to observe your surroundings.
Do not use the pre-collision system
instead of normal braking operations
under any circumstances. This system
will not prevent collisions or lessen col-
lision damage or injury in every situa-
tion. Do not overly rely on this system.
Failure to do so may lead to an acci-
dent, resulting in death or serious
injury.
●
Although this system is designed to
help avoid a collision or help reduce
the impact of the collision, its effective-
ness may change according to various
conditions, therefore the system may
not always be able to achieve the same
level of performance.
Read the following conditions care-
fully. Do not overly rely on this system
and always drive carefully.
• Conditions under which the system
may operate even if there is no possi-
bility of a collision:
• Conditions under which the system
may not operate properly:
●
Do not attempt to test the operation of
the pre-collision system yourself.
Depending on the objects used for
testing (dummies, cardboard objects
imitating detectable objects, etc.), the
system may not operate properly, pos-
sibly leading to an accident.
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WARNING
■
Pre-collision braking
●
When the pre-collision braking func-
tion is operating, a large amount of
braking force will be applied.
●
If the vehicle is stopped by the opera-
tion of the pre-collision braking func-
tion, the pre-collision braking function
operation will be canceled after
approximately 2 seconds. Depress the
brake pedal as necessary.
●
The pre-collision braking function may
not operate if certain operations are
performed by the driver. If the acceler-
ator pedal is being depressed strongly
or the steering wheel is being turned,
the system may determine that the
driver is taking evasive action and pos-
sibly prevent the pre-collision braking
function from operating.
●
In some situations, while the pre-colli-
sion braking function is operating,
operation of the function may be can-
celed if the accelerator pedal is
depressed strongly or the steering
wheel is turned and the system deter-
mines that the driver is taking evasive
action.
●
If the brake pedal is being depressed,
the system may determine that the
driver is taking evasive action and pos-
sibly delay the operation timing of the
pre-collision braking function.
■
Active steering assist
●
The steering wheel may turn automati-
cally when active steering assist is
operating.
●
As active steering assist operation will
be canceled when the system deter-
mines that a collision has been
avoided, operate the steering wheel as
necessary.
●
In the following situations, the system
may determine that the driver is taking
evasive action. In this case, the active
steering assist may not operate or may
be canceled.
• If the accelerator pedal is being
depressed strongly or the steering
wheel is being operated. In this case
the system may determine that the
driver is taking evasive action and the
pre-collision braking may not operate.
• In some situations, while the active
steering assist is operating, operation
of the function may be canceled if the
accelerator pedal is depressed
strongly or the steering wheel is turned
and the system determines that the
driver is taking evasive action.
• When the active steering assist is
operating, if the steering wheel is held
firmly or is operated in the opposite
direction to that which the system is
generating torque, the function may be
canceled.
• If the brake pedal is depressed, the sys-
tem may determine that the driver is
taking evasive action and the active
steering assist operation may be
delayed.
■
Pre-collision seat belts with comfort
function
If the pre-collision seat belts have oper-
ated and the seat belts are locked in a
retracted position, immediately stop the
vehicle in a safe place, release and
retract the seat belts to unlock them and
then fasten them again.
Also, if a seat belt can be loosened, it can
be unlocked by slightly retracting it with-
out releasing it.
■
When to disable the pre-collision sys-
tem
In the following situations, disable the
system, as it may not operate properly,
possibly leading to an accident resulting
in death or serious injury:
●
When the vehicle is being towed
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Driving
■
Enabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on
(
the multi-information display.
The system is automatically enabled each
time the power switch is turned to ON
mode.
If the system is disabled, the PCS warn-
ing light will turn on and a message will
be displayed on the multi-information
display.
If the pre-collision system is disabled,
the pedestrian alert system will also be
disabled. At this time, the FCTA (Front
Cross Traffic Alert) (
will also be disabled.
■
Enabling/Disabling the pedestrian
alert system
The pedestrian alert can be
enabled/disabled on
(
the multi-information display. At this
time, the FCTA (Front Cross Traffic
Alert) system will also be enabled/dis-
abled.
WARNING
●
When your vehicle is towing another
vehicle
●
When transporting the vehicle via
truck, boat, train or similar means of
transportation
●
When the vehicle is raised on a lift with
the hybrid system on and the tires are
allowed to rotate freely
●
When inspecting the vehicle using a
drum tester such as a chassis dyna-
mometer or speedometer tester, or
when using an on vehicle wheel bal-
ancer
●
When a strong impact has been
applied to the front bumper, rear
bumper or front grille, due to an acci-
dent or other reasons
●
If the vehicle cannot be driven in a sta-
ble manner, such as when the vehicle
has been in an accident or is malfunc-
tioning
●
When the vehicle is driven in a sporty
manner or off-road
●
When the tires are not properly
inflated
●
When the tires are very worn
●
When tires of a size other than speci-
fied are installed
●
When tire chains are installed
●
When a compact spare tire or an
emergency tire puncture repair kit is
used
●
If equipment (snow plow, etc.) that may
obstruct a radar sensor or the front
camera is temporarily installed to the
vehicle
Changing settings of the pre-col-
lision system
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Changing the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on
(
multi-information display. The warning
timing for the pedestrian and FCTA
(Front Cross Traffic Alert) system will
also be changed.
The warning timing setting is retained
when the power switch is turned off. How-
ever, if the pre-collision system is disabled
and re-enabled, the operation timing will
return to the default setting (middle).
1
Early
2
Middle
This is the default setting.
3
Late
■
Changing the pedestrian alert tim-
ing
If the pre-collision warning timing is
changed, the pedestrian alert and
FCTA (Front Cross Traffic Alert) timing
will also be changed accordingly.
■
Operational conditions
The pre-collision system is enabled and the system determines that the possibility of a frontal
collision with a vehicle, pedestrian/bicyclist, guardrail, etc. or a front side collision with a
vehicle is high. Each function is operational at the following speeds:
●
Pedestrian alert
●
Pre-collision warning
objects
Vehicle speed
Pedestrians
Approx. 20 to 40 mph (30 to 65 km/h)
objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding vehicles
Approx. 3 to 110 mph (5 to
180 km/h)
Approx. 3 to 110 mph (5 to
180 km/h)
Bicyclists and pedestrians
Approx. 3 to 50 mph (5 to
80 km/h)
Approx. 3 to 50 mph (5 to
80 km/h)
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●
Pre-collision brake assist
●
Pre-collision braking
●
Active steering assist
The system may not operate in the following situations:
●
If a 12-volt battery terminal has been disconnected and reconnected and then the vehicle
has not been driven for a certain amount of time
●
If the shift position is in R
●
If VSC is disabled (only the pedestrian alert and pre-collision warning function will be
operational)
●
When there is insufficient safe or unobstructed space for the vehicle to be steered into
●
When an object is approaching the area the vehicle is to be steered into
■
Vehicle, pedestrian or bicyclist detec-
tion function
The pre-collision system detects vehicles,
pedestrians and bicyclists based on the size,
profile, and motion of the person. However,
objects
Vehicle speed
Approaching vehicle speed
Vehicles approaching from
the front left or right side
Approx. 7 to 37 mph (10 to
60 km/h)
Approx. 10 to 37 mph (15 to
60 km/h)
objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding vehicles
Approx. 20 to 110 mph (30
to 180 km/h)
Approx. 20 to 110 mph (30
to 180 km/h)
Bicyclists and pedestrians
Approx. 20 to 50 mph (30
to 80 km/h)
Approx. 20 to 50 mph (30
to 80 km/h)
objects
Vehicle speed
Approaching vehicle speed
Vehicles approaching from
the front left or right side
Approx. 19 to 37 mph (30 to
60 km/h)
Approx. 10 to 37 mph (15 to
60 km/h)
objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding vehicles
Approx. 3 to 110 mph (5 to
180 km/h)
Approx. 3 to 110 mph (5 to
180 km/h)
Bicyclists and pedestrians
Approx. 3 to 50 mph (5 to
80 km/h)
Approx. 3 to 50 mph (5 to
80 km/h)
objects
Vehicle speed
Pedestrians
Approx. 25 to 40 mph (40 to 65 km/h)
Guardrail
Approx. 37 to 50 mph (60 to 80 km/h)
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a vehicle, pedestrian or bicyclist may not be
detected depending on the surrounding
brightness and the motion, posture, and
angle of the person, preventing the system
from operating properly. (
The illustration shows an image of vehicles,
pedestrians and bicyclists.
■
Cancelation of pre-collision braking
and active steering assist
If either of the following occur while the
pre-collision braking function is operating, it
will be canceled:
●
The accelerator pedal is depressed
strongly.
●
The steering wheel is turned sharply or
abruptly.
■
Conditions under which the system may
operate even if there is no possibility of a
collision
●
In some situations such as the following,
the system may determine that there is a
possibility of a frontal collision and oper-
ate.
• When passing a vehicle, pedestrian or
bicyclist
• When changing lanes while overtaking a
vehicle, pedestrian or bicyclist
• When approaching a vehicle, pedestrian
or bicyclist in an adjacent lane or on the
roadside, such as when changing the
course of travel or driving on a winding
road
• When rapidly closing on a vehicle,
pedestrian, bicyclist, etc.
• When approaching objects on the road-
side, such as vehicle, pedestrian, bicyclist,
guardrails, traffic signs, utility poles, street
lights, trees, walls, etc.
• When there is a vehicle, pedestrian, bicy-
clist or object by the roadside at the
entrance of a curve
• When there are patterns or paint in front
of your vehicle that may be mistaken for a
vehicle, pedestrian or bicyclist
• When the front of your vehicle is hit by
water, snow, dust, etc.
• When overtaking a vehicle, pedestrian or
bicyclist that is changing lanes or making
a right/left turn
• When passing a vehicle, pedestrian or
bicyclist in an oncoming lane that is
stopped to make a right/left turn
• When a vehicle, pedestrian or bicyclist
approaches very close and then stops
before entering the path of your vehicle
• If the front of your vehicle is raised or low-
ered, such as when on an uneven or
undulating road surface
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Driving
• When driving on a road surrounded by a
structure, such as in a tunnel or on an iron
bridge
• When there is a metal object (manhole
cover, steel plate, etc.), steps, dips, or a
protrusion on the road surface or road-
side
• When a crossing pedestrian or bicyclist
approaches very close to the vehicle
• When passing through a place with a low
structure above the road such as a low
ceiling, underpass, bridge girder, traffic
sign, etc.
• When passing under an object (road
sign, billboard, etc.)
• When approaching an electric toll gate
barrier, parking area barrier, or other
barrier that opens and closes
• When using an automatic car wash
• When driving through or under objects
that may contact the vehicle, such as thick
grass, tree branches, or a banner
• When driving through steam or smoke
• When driving near an object that reflects
radio waves, such as a large truck or
guardrail
• When driving near a TV tower, broad-
casting station, electric power plant, or
other location where strong radio waves
or electrical noise may be present
• When passing an oncoming vehicle on a
narrow road
• When driving close to objects such as
walls or poles on a median
• When passing an oncoming vehicle
around a sharp curve
• When passing a vehicle which is making
a left/right turn
• When being passed by a vehicle
approaching from the left or right side in
front of your vehicle
• When making a left/right turn while a
vehicle is approaching from the left or
right side in front of your vehicle
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