LEXUS ES300h 2022 Owners Manual

1794-5. Using the driving support systems
4
Driving
WARNING
OIf 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. (P.271)
OIf 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.
ODo not attach window tint to the wind-
shield.
OReplace the windshield if it is damaged
or cracked. After replacing the wind-
shield, the front camera must be
recalibrated. Contact your Lexus
dealer for details.
ODo not allow liquids to contact the
front camera.
ODo not allow bright lights to shine into
the front camera.
ODo 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.
ODo not subject the front camera to a
strong impact.
ODo not change the installation position
or direction of the front camera or
remove it.
ODo not disassemble the front camera.
ODo not modify any components of the
vehicle around the front camera
(inside rear view mirror, etc.) or ceil-
ing.
ODo not attach any accessories to the
hood, front grille or front bumper that
may obstruct the front camera. Con-
tact your Lexus dealer for details.
OIf a surfboard or other long object is to
be mounted on the roof, make sure
that it will not obstruct the front cam-
era.
ODo not modify the headlights or other
lights.

1804-5. Using the driving support systems
QIf 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.
OIn 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.
OIn 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 disap-
pear 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
• Depending on the conditions in the vicinity of the vehicle, the radar may judge the sur- rounding environment can not be properly re cognized. In that case, “Pre-Collision Sys-
SituationActions
When the area around a camera is covered
with dirt, moisture (fogged up, covered with
condensation, ice, etc.), or other foreign
matter
Using the wiper and A/C function, remove
the dirt and other attached matter. (P.271)
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 sunlight
reflected from the surface of the sunshade
may cause the temperature of the front cam-
era 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.
When “Pre-Collision System Radar In Self
Calibration Unavailable See Owner’s Man-
ual” is displayed.Check whether there is attached materials
on the radar sensor and radar sensor cover,
and if there is, remove it.

1814-5. Using the driving support systems
4
Driving
tem Unavailable See Owner’s Manual” is displayed.

1824-5. Using the driving support systems
The system can detect the following
(The detectable objects differs
depending on the function.):
Vehicles
 Bicyclists
 Pedestrians
QPre-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.
QPre-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.
QPre-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.
QEmergency steering assist
If the system determines that the possi-
bility of a frontal collision is high and
that there is sufficient space for the
vehicle to be steered into within its
lane, and the driver has begun evasive
maneuver or steering, emergency
steering assist will assist the steering
movements to help enhance the vehi-
cle stability and for lane departure pre-
vention. During operation, the
indicator will illuminate in green.
PCS (Pre-Collision System)
The pre-collision system uses a
radar sensor and front camera to
detect objects ( P.182) in front of
the vehicle. When the system
determines that the possibility of a
frontal collision with an object is
high, a warning operates to urge
the driver to take evasive action
and the potential br ake pressure is
increased to help the driver avoid
the collision. If the system deter-
mines that the possibility of a frontal
collision with an object is extremely
high, the brakes are automatically
applied to help avoid the collision or
help reduce the impact of the colli-
sion.
The pre-collision system can be dis-
abled/enabled and the warning tim-
ing can be changed. ( P.185)
Detectable objects
System functions

1834-5. Using the driving support systems
4
Driving
QIntersection right/left turn assis-
tance
If the system determines that there is a
high possibility of a collision in the fol-
lowing situations, it will assist with Pre-
collision warning and, if necessary Pre-
collision braking.
Depending on the configuration of the
intersection, it may not be possible to
support.
 When you turn right/left at an inter-
section and cross the path of an
oncoming vehicle
 When you turn right/left, pedestrian
is detected in the forward direction
and estimated to enter your vehi-
cle’s path (bicyclists are not
detected.)QSuspension control (if equipped)
When the system determines that the
possibility of a frontal collision is high,
the Adaptive Variable Suspension Sys-
tem ( P.253) will control the damp-
ing force of the shock absorbers to
help maintain an appropriate vehicle
posture.
WARNING
QLimitations of the pre-collision sys-
tem
OThe 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.

1844-5. Using the driving support systems
WARNING
OAlthough 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: P.188
• Conditions under which the system may not operate properly: P.190
ODo 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.
QPre-collision braking
OWhen the pre-collision braking func-
tion is operating, a large amount of
braking force will be applied.
OIf 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.
OThe 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.
OIn 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.
OIf the brake pedal is being depressed,
the system may determine that the
driver is taking ev asive action and pos-
sibly delay the operation timing of the
pre-collision braking function.
QEmergency steering assist
OAs emergency steering assist opera-
tion will be canceled when the system
determines that lane departure pre-
vention function has been completed.
OEmergency steering assist may not
operate or may be cancel in the fol-
lowing cases as the system may deter-
mine the driver is taking actions.
• If the accelerator pedal is being depressed strongly, the steering wheel
is being operated sharply, the brake
pedal is being depressed or the turn
signal lever is bein g operated. In this
case, the system may determine that
the driver is taking evasive action and
the emergency steering assist may not
operate.
• In some situations, while the emer- gency steering assist is operating,
operation of the function may be can-
celed if the accelerator pedal is
depressed strongly, the steering wheel
is operated sharply or the brake pedal
is being depressed and the system
determines that the driver is taking
evasive action.
• When the emergency 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.

1854-5. Using the driving support systems
4
Driving
QEnabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on ( P.85) of
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.
QChanging the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on ( P.85) of the
multi-information display.
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).
WARNING
QWhen 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:
OWhen the vehicle is being towed
OWhen your vehicle is towing another
vehicle
OWhen transporting the vehicle via
truck, boat, train or similar means of
transportation
OWhen the vehicle is raised on a lift with
the hybrid system on and the tires are
allowed to rotate freely
OWhen inspecting the vehicle using a
drum tester such as a chassis
dynamometer or speedometer tester,
or when using an on vehicle wheel bal-
ancer
OWhen a strong impact is applied to the
front bumper or front grille, due to an
accident or other reasons
OIf the vehicle cannot be driven in a sta-
ble manner, such as when the vehicle
has been in an accident or is malfunc-
tioning
OWhen the vehicle is driven in a sporty
manner or off-road
OWhen the tires are not properly
inflated
OWhen the tires are very worn
OWhen tires of a size other than speci-
fied are installed
OWhen tire chains are installed
OWhen a compact spare tire or an
emergency tire puncture repair kit is
used
OIf equipment (snow plow, etc.) that
may obstruct the radar sensor or front
camera is temporarily installed to the
vehicle
Changing settings of the pre-
collision system

1864-5. Using the driving support systems
If the pre-collision warning timing is
changed, emergency steering assist tim-
ing will also be changed accordingly.
If late is selected, emergency steering
assist would not operate in case of an
emergency.
1 Early
2 Middle
This is the default setting.
3Late
QOperational conditio ns for each pre-collision function
The pre-collision system is enabled and the syst em determines that the possibility of a fron-
tal collision with a detected object is high.
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 lever is in R
• When the VSC OFF indicator is illuminated (o nly the pre-collision warning function will
be operational)
The operation speeds and operation cancellation for each function is listed below.
OPre-collision warning
While the pre-collision warning function is operat ing, if the steering wheel is operated heav-
ily or suddenly, the pre-collision warning may be cancelled.
Detectable objectsVehicle speedRelative speed between your
vehicle and object
Preceding and stopped vehi- clesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 7 to 110 mph (10 to 180 km/h)
Oncoming vehiclesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 13 to 110 mph (20 to 180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to 80 km/h)Approx. 7 to 50 mph (10 to 80 km/h)

1874-5. Using the driving support systems
4
Driving
OPre-collision brake assist
OPre-collision braking
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.
OEmergency steering assist
When the turn signal lights are flashing, emer gency steering assist will not operate in case of
an emergency.
If any of the following occur while the emergency steering assist function is operating, it will
be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
• The brake pedal is depressed.
OIntersection right/left turn assistance (pre-collision warning)
When the turn signal lights are not flashing, support for turning left or right at an intersection
which targets oncoming vehicles does not work.
Detectable objectsVehicle speedRelative speed between your vehicle and object
Preceding and stopped vehi- clesApprox. 20 to 110 mph (30 to 180 km/h)Approx. 20 to 110 mph (30 to 180 km/h)
Bicyclists and pedestriansApprox. 20 to 50 mph (30 to 80 km/h)Approx. 20 to 50 mph (30 to 80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
Preceding and stopped vehi- clesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 7 to 110 mph (10 to 180 km/h)
Oncoming vehiclesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 13 to 110 mph (20 to 180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to 80 km/h)Approx. 7 to 50 mph (10 to 80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
Preceding and stopped vehi-cles, bicyclists and pedestri- ansApprox. 25 to 50 mph (40 to 80 km/h)Approx. 25 to 50 mph (40 to 80 km/h)

1884-5. Using the driving support systems
OIntersection right/left turn assistance (pre-collision braking)
When the turn signal lights are not flashing, support for turning left or right at an intersection
which targets oncoming vehicles does not work.
QObject detection function
The system detects objects based on their
size, profile, motion, etc. However, an
object may not be detected depending on
the surrounding brightness and the motion,
posture, and angle of the detected object,
preventing the system from operating
properly. ( P.190) The illustration shows
an image of detectable objects.
QConditions under which the system may
operate even if there is no possibility of a
collision
OIn 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 detectable object, etc. • When changing lanes while overtaking a
detectable object, etc.
• When approaching a detectable object
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 detectable object, etc.
• When approaching objects on the road- side, such as detectable objects, guard-
rails, utility poles, trees, or walls
• When there is a detectable object or other object by the roadside at the
entrance of a curve
Detectable objectsVehicle speedOncoming vehicle
speedRelative speed
between your vehi- cle and object
Oncoming vehiclesApprox. 7 to 15 mph (10 to 25 km/h)Approx. 20 to 35
mph (30 to 55 km/h)Approx. 25 to 50 mph (40 to 80 km/h)
PedestriansApprox. 7 to 15 mph (10 to 25 km/h)Approx. 7 to 15 mph (10 to 25 km/h)
Detectable objectsVehicle speedOncoming vehicle speedRelative speed
between your vehi- cle and object
Oncoming vehiclesApprox. 10 to 15 mph (15 to 25 km/h)Approx. 20 to 28
mph (30 to 45 km/h)Approx. 28 to 43
mph (45 to 70 km/h)
PedestriansApprox. 7 to 15 mph (10 to 25 km/h)Approx. 7 to 15 mph (10 to 25 km/h)