snow chains LEXUS ES300h 2022 Owners Manual

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

1934-5. Using the driving support systems
4
Driving
WARNING
QBefore using LTA system
ODo not rely solely upon the LTA sys-
tem. The LTA system does not auto-
matically drive the vehicle or reduce
the amount of attention that must be
paid to the area in front of the vehicle.
The driver must always assume full
responsibility for driving safely by pay-
ing careful attention to the surround-
ing conditions and operating the
steering wheel to correct the path of
the vehicle. Also, the driver must take
adequate breaks when fatigued, such
as from driving for a long period of
time.
OFailure to perform appropriate driving
operations and pay careful attention
may lead to an accident, resulting in
death or serious injury.
QSituations unsuitable for LTA system
In the following situations, use the LTA
switch to turn the system off. Failure to do
so may lead to an acc ident, resulting in
death or serious injury.
OVehicle is driven on a road surface
which is slippery due to rainy weather,
fallen snow, freezing, etc.
OVehicle is driven on a snow-covered
road.
OWhite (yellow) lines are difficult to see
due to rain, snow, fog, dust, etc.
OVehicle is driven in a temporary lane
or restricted lane due to construction
work.
OVehicle is driven in a construction
zone.
OA spare tire, tire chains, etc. are
equipped.
OWhen the tires have been excessively
worn, or when the tire inflation pres-
sure is low.
ODuring emergency towing
QPreventing LTA system malfunctions
and operations performed by mistake
ODo not modify the headlights or place
stickers, etc. on the surface of the
lights.
ODo not modify the suspension etc. If
the suspension etc. needs to be
replaced, contact your Lexus dealer.
ODo not install or place anything on the
hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar,
etc.).
OIf your windshield needs repairs, con-
tact your Lexus dealer.
QConditions in which functions may
not operate properly
In the following situations, the functions
may not operate properly and the vehi-
cle may depart from its lane. Drive safely
by always paying careful attention to
your surroundings and operate the
steering wheel to correct the path of the
vehicle without relying solely on the func-
tions.
OWhen the follow-up cruising display is
displayed ( P.197) and the preced-
ing vehicle changes lanes. (Your vehi-
cle may follow the preceding vehicle
and also change lanes.)
OWhen the follow-up cruising display is
displayed ( P.197) and the preced-
ing vehicle is swaying. (Your vehicle
may sway accordingly and depart from
the lane.)

2264-5. Using the driving support systems
that does not reflect ultrasonic waves (ex.
skirts with gathers or frills).
OWhen objects that are not perpendicular
to the ground, not perpendicular to the
vehicle traveling direction, uneven, or
waving are in the detection range.
OStrong wind is blowing.
OWhen driving in inclement weather such
as fog, snow or a sandstorm.
OWhen an object that cannot be detected
is between the vehicle and a detected
object.
OIf an object such as a vehicle, motorcycle,
bicycle or pedestrian cuts in front of the
vehicle or runs out from the side of the
vehicle.
OIf the orientation of a sensor has been
changed due to a collision or other
impact.
OWhen equipment that may obstruct a
sensor is installed, such as a towing eye-
let, bumper protector (an additional trim
strip, etc.), bicycle carrier, or snow plow.
OIf the front of the vehicle is raised or low-
ered due to the carried load.
OIf the vehicle cannot be driven in a stable
manner, such as when the vehicle has
been in an accident or is malfunctioning.
OWhen tire chains, a compact spare tire or
an emergency tire puncture repair kit are
used.
QSituations in which the system may
operate even if there is no possibility of a
collision
In some situations, such as the following, the
system may operate even though there is
no possibility of a collision.
OWhen driving on a narrow road.
OWhen driving toward a banner, flag, low- hanging branch or boom barrier (such as
those used at railroad crossings, toll
gates and parking lots).
OWhen there is a rut or hole in the surface
of the road.
OWhen driving on a metal cover (grating),
such as those used for drainage ditches.
OWhen driving up or down a steep slope.
OIf a sensor is hit by a large amount of
water, such as when driving on a flooded
road.
OThere is dirt, snow, water drops or ice on
a sensor. (Cleaning the sensors will
resolve this problem.)
OA sensor is coated with a sheet of spray
or heavy rain.
OWhen driving in inclement weather such
as fog, snow or a sandstorm.
OWhen strong winds are blowing.
OWhen vehicle horns, vehicle detectors,
motorcycle engines, air brakes of large
vehicles, the clearance sonar of other
vehicles or other devices which produce
ultrasonic waves are near the vehicle.
OIf the front of the vehicle is raised or low-
ered due to the carried load.
OIf the orientation of a sensor has been
changed due to a collision or other
impact.
OThe vehicle is approaching a tall or
curved curb.
ODriving close to columns (H-shaped steel
beams, etc.) in multi-story parking
garages, construction sites, etc.
OIf the vehicle cannot be driven in a stable
manner, such as when the vehicle has
been in an accident or is malfunctioning.
OOn an extremely bumpy road, on an
incline, on gravel, or on grass.

2384-5. Using the driving support systems
QSituations in which the system may not
operate properly
OSome pedestrians, such as the following,
may not be detected by the rear camera
detection function, preventing the func-
tion from operating properly:
• Pedestrians who are bending forward or squatting
• Pedestrians who are lying down
• Pedestrians who are running
• Pedestrians who suddenly enter the detection area
• People riding a bicycle, skateboard, or other light vehicle
• Pedestrians wearing oversized clothing such as a rain coat, long skirt, etc., making
their silhouette obscure
• Pedestrians whose body is partially hid- den by an object, such as a cart or
umbrella
• Pedestrians which are obscured by dark- ness, such as at night
OIn some situations, such as the following,
pedestrians may not be detected by the
rear camera detection function, prevent-
ing the function from operating properly:
• When backing up in inclement weather (rain, snow, fog, etc.)
• When the rear camera is obscured (dirt, snow, ice, etc. are attached) or scratched
• When a very bright light, such as the sun,
or the headlights of another vehicle,
shines directly into the rear camera
• When backing up in a place where the
surrounding brightness changes sud-
denly, such as at the entrance or exit of a
garage or underground parking lot
• When backing up in a dim environment such as during dusk or in an underground
parking lot
• When the camera position and direction are deviated
• When a towing hook is attached
• When water droplets are flowing on the camera lens
• When the vehicle height is extremely
changed (nose up, nose down)
• When tire chains or an emergency tire
puncture repair kit are used
QSituations in which the system may
operate unexpectedly
OEven though there are no pedestrians in the detection area, some objects, such as
the following, may be detected, possibly
causing the rear camera detection func-
tion to operate.
• Three dimensional objects, such as a pole, traffic cone, fence, or parked vehi-
cle
• Moving objects, such as a car or motor- cycle
• Objects moving toward your vehicle when backing up, such as flags or pud-
dles (or airborne matter, such as smoke,
steam, rain, or snow)
• Cobblestone or gravel roads, tram rails, road repairs, white lines, pedestrian
crossings or fallen leaves on the road
• Metal covers (gratings), such as those used for drainage ditches
• Objects reflected in a puddle or on a wet road surface
•Shadows on the road
OIn some situations, such as the following,
the rear camera detection function may
operate even though there are no pedes-
trians in the detection area.
• When backing up toward the roadside or
a bump on the road
• When backing up toward an incline/decline
• If the rear of the vehicle is raised or low- ered due to the carried load
• If a bumper protector, such as an addi-
tional trim strip, is installed to the rear
bumper
• If the orientation of the rear camera has
been changed due to a collision or other
impact, or removal and installation
• If a towing eyelet is installed to the rear of
the vehicle
• When water is flowing over the rear cam- era lens
• When the rear camera is obscured (dirt, snow, ice, etc. are attached) or scratched
• If there is a flashing light in the detection
area, such as the emergency flashers of
another vehicle
• When tire chains or an emergency tire puncture repair kit are used.
OSituations in which the rear camera
detection function may be difficult to
notice
• The buzzer may be difficult to hear if the surrounding area is noisy, the volume of

2404-5. Using the driving support systems
QParking 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.251)
WARNING
QCautions regarding the use of the
system
Do not overly rely on the system, as
doing so may lead to an accident.
Always drive while checking the safety of
the surroundings of the vehicle.
Depending on the vehicle and road con-
ditions, weather, etc., the system may not
operate.
The detection capabilities of sensors and
radars are limited. Always drive while
checking the safety of the surroundings
of the vehicle.
OThe 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.
OThe Parking Support Brake system is
not designed to stop the vehicle com-
pletely. Additionally, even if the system
has stopped the vehicle, it is necessary
to depress the brake pedal immedi-
ately as brake control will be canceled
after approximately 2 seconds.
OIt is extremely dangerous to check the
system operations by intentionally
driving the vehicle in to the direction of
a wall, etc. Never attempt such actions.
QWhen 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.
OWhen inspecting the vehicle using a
chassis roller, chassis dynamo or free
roller.
OWhen loading the vehicle onto a boat,
truck or other transport vessel.
OIf the suspension has been modified or
tires of a size other than specified are
installed.
OIf the front of the vehicle is raised or
lowered due to the carried load.
OWhen 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.
OWhen using automatic car washing
devices.
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 tire chains, a compact spare tire
or an emergency tire puncture repair
kit are used.

2564-5. Using the driving support systems
WARNING
QThe ABS does not operate effectively
when
OThe limits of tire gripping performance
have been exceeded (such as exces-
sively worn tires on a snow covered
road).
OThe vehicle hydroplanes while driving
at high speed on wet or slick roads.
QStopping distance when the ABS is
operating may exceed that of normal
conditions
The ABS is not designed to shorten the
vehicle’s stopping distance. Always
maintain a safe distance from the vehicle
in front of you, especially in the following
situations:
OWhen driving on dirt, gravel or snow-
covered roads
OWhen driving with tire chains
OWhen driving over bumps in the road
OWhen driving over roads with pot-
holes or uneven surfaces
QTRAC/VSC may not operate effec-
tively when
Directional control and power may not
be achievable while driving on slippery
road surfaces, even if the TRAC/VSC
system is operating.
Drive the vehicle carefully in conditions
where stability and power may be lost.
QActive Cornering Assist does not
operate effectively when
ODo not overly rely on Active Corner-
ing Assist. Active Cornering Assist
may not operate effectively when
accelerating down slopes or driving on
slippery road surfaces.
OWhen Active Cornering Assist fre-
quently operates, Active Cornering
Assist may temporarily stop operating
to ensure proper operation of the
brakes, TRAC and VSC.
QHill-start assist control does not oper-
ate effectively when
ODo not overly rely on hill-start assist
control. Hill-start assist control may
not operate effectively on steep
inclines and roads covered with ice.
OUnlike the parking brake, hill-start
assist control is not intended to hold
the vehicle stationary for an extended
period of time. Do not attempt to use
hill-start assist control to hold the vehi-
cle on an incline, as doing so may lead
to an accident.
QWhen the TRAC/ABS/VSC is acti-
vated
The slip indicator light flashes. Always
drive carefully. Reckless driving may
cause an accident. Exercise particular
care when the indicator light flashes.
QWhen the TRAC/VSC systems are
turned off
Be especially careful and drive at a
speed appropriate to the road condi-
tions. As these are the systems to help
ensure vehicle stability and driving force,
do not turn the TRAC/VSC systems off
unless necessary.
QSecondary Collision Brake
Do not rely solely upon the Secondary
Collision Brake. This system is designed
to help reduce the possibility of further
damage due to a secondary collision,
however, that effect changes according
to various conditions. Overly relying on
the system may result in death or serious
injury.

2604-6. Driving tips
Use fluids that are appropriate to
the prevailing outside temperatures.
•Engine oil
• Engine coolant/power control unit cool-
ant
•Washer fluid
 Have a service technician inspect
the condition of the 12-volt battery.
 Have the vehicle fitted with four
snow tires or purchase a set of tire
chains for the front tires.
*
Ensure that all tires are the specified size
and brand, and that chains match the size
of the tires.
*: Tire chains cannot be mounted on vehi-
cles with 18-inch/19-inch tires.
Perform the following according to the
driving conditions:
 Do not try to forcibly open a window
Winter driving tips
Carry out the necessary prepara-
tions and inspection s before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Preparation for winter
WARNING
QDriving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
OUse tires of the specified size.
OMaintain the recommended level of air
pressure.
ODo not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
OUse snow tires on all, not just some
wheels.
QDriving with tire chains (vehicles with
17-inch tires)
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
ODo not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
OAvoid driving on bumpy road surfaces
or over potholes.
OAvoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
OSlow down sufficiently before entering
a curve to ensure that vehicle control
is maintained.
ODo not use LTA (Lane Tracing Assist)
system.
NOTICE
QRepairing or replacing snow tires
Request repairs or replacement of snow
tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle

2614-6. Driving tips
4
Driving
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
immediately to prevent it from
freezing.
 To ensure proper operation of the
climate control system fan, remove
any snow that has accumulated on
the air inlet vents in front of the
windshield.
 Check for and remove any excess
ice or snow that may have accumu-
lated on the exterior lights, vehicle’s
roof, chassis, around the tires or on
the brakes.
 Remove any snow or mud from the
bottom of your shoes before getting
in the vehicle.
QTo protect the windshield wipers
 P.172
Accelerate the vehicle slowly, keep a
safe distance between you and the
vehicle ahead, and drive at a reduced
speed suitable to road conditions.
 Park the vehicle and move the shift
lever to P without setting the park-
ing brake. The parking brake may
freeze up, preventing it from being
released. If the vehicle is parked
without setting the parking brake,
make sure to block the wheels.
Failure to do so may be dangerous
because it may cause the vehicle to move unexpectedly, possibly lead-
ing to an accident.
When the parking brake is in automatic
mode, release the parking brake after shift-
ing the shift lever to P. (
P.159)
 If the vehicle is left parked with the
brakes damp in cold temperatures,
there is a possibility of the brakes
freezing.
 If the vehicle is parked without set-
ting the parking brake, confirm that
the shift lever cannot be moved out
of P
*.
*: The shift lever will be locked if it is
attempted to be shifted from P to any
other position without depressing the
brake pedal. If the shift lever can be
shifted from P, there may be a problem
with the shift lock system. Have the vehi-
cle inspected by your Lexus dealer
immediately.
Vehicles with 17-inch tires
Use the correct tire chain size when
mounting the tire chains.
Chain size is regulated for each tire
size.
When driving the vehicle
When parking the vehicle
WARNING
QWhen parking the vehicle
When parking the vehicle without apply-
ing the parking brake, make sure to
chock the wheels. If you do not chock the
wheels, the vehicle may move unexpect-
edly, possibly resulting in an accident.
Selecting tire chains

2624-6. Driving tips
Side chain:0.12 in. (3 mm) in diameter
0.39 in. (10 mm) in width
1.18 in. (30 mm) in length
Cross chain:
0.16 in. (4 mm) in diameter
0.55 in. (14 mm) in width
0.98 in. (25 mm) in length
Vehicles with 18-inch/19-inch tires
Tire chains cannot be mounted.
Snow tires should be used instead.
Regulations regarding the use of tire
chains vary depending on location and
type of road. Always check local regu-
lations before installing chains.
QTire chain installation
Observe the following precautions when
installing and re moving chains:
OInstall and remove tire chains in a safe
location.
OInstall tire chains on the front tires. Do not
install tire chains on the rear tires.
OInstall tire chains on front tires as tightly as possible. Retighten chains after driving
1/4 - 1/2 mile (0.5 - 1.0 km).
OInstall tire chains following the instruc-
tions provided with the tire chains.
To enable the windshield wipers to be
lifted when heavy snow or icy condi-
tions are expected, change the rest
position of the windshield wipers from
the retracted position below the hood
to the service position using the wiper
lever. (
P.172)
Regulations on the use of tire
chains (vehicles with 17-inch
tires)
A
B
C
D
E
F
NOTICE
QFitting tire chains
The tire pressure warning valves and
transmitters may not function correctly
when tire chains are fitted.
Windshield wipers

3336-3. Do-it-yourself maintenance
6
Maintenance and care
Your vehicle is equipped with a tire
pressure warning system that uses tire
pressure warning valves and transmit-
ters to detect low tire inflation pressure
before serious problems arise.
If the tire pressure drops below a
predetermined level, the driver is
warned by a screen display and a
warning light. ( P.368)
 The tire pressure detected by the
tire pressure warning system can be
displayed on the multi-information
display. ( P.85)
The illustration used is intended as an
example, and may differ from the image
that is actually displayed on the multi-infor-
mation display.
QRoutine tire inflation pressure checks
The tire pressure warning system does not
replace routine tire inflation pressure
checks. Make sure to check tire inflation
pressure as part of your routine of daily
vehicle checks.
QTire inflation pressure
OIt may take a few minutes to display the
tire inflation pressure after the power
switch is turned to ON mode.
It may also take a few minutes to display
the tire inflation pressure after inflation
pressure has been adjusted.
OTire inflation pressure changes with tem-
perature. The displayed values may also
be different from the values measured
using a tire pressure gauge.
QSituations in which the tire pressure
warning system may not operate prop-
erly
OIn the following cases, the tire pressure
warning system may not operate prop-
erly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is
not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehi-
cle, particularly around the wheels or
wheel housings.
• If the tire inflation pressure is extremely
higher than the specified level.
• If wheel without tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warn- ing valves and transmitters is not regis-
tered in the tire pressure warning
computer.
OPerformance may be affected in the fol-
lowing situations.
• Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates
strong radio waves or electrical noise
• When carrying a portable radio, cellular
phone, cordless phone or other wireless
communication device
If tire position information is not correctly
displayed due to the radio wave conditions,
the display may be corrected by driving and
changing the radio wave conditions.
OWhen the vehicle is parked, the time
taken for the warning to start or go off
could be extended.
OWhen tire inflation pressure declines rap-
idly for example when a tire has burst, the
warning may not function.
Tire pressure warning system