warning LEXUS ES300h 2022 Owners Manual

3376-3. Do-it-yourself maintenance
6
Maintenance and care
ing light starts slowly blinking 3
times.
Then a message will be displayed on the
multi-information display.
When registration is being performed, the
tire pressure warning light will blink for
approximately 1 minute then illuminate and
“--” will be displayed for the inflation pres-
sure of each tire on the multi-information
display.
6Drive at approximately 25 mph
(40 km/h) or more for approxi-
mately 10 to 30 minutes.
Registration is complete when the tire
pressure warning light turns off and the
inflation pressure of each tire is displayed
on the multi-information display. Registra-
tion may take longer than normal to com-
plete if the vehicle speed cannot be
maintained at approximately 25 mph (40
km/h) or more. If registration cannot be
completed after driving for 1 hour or more,
perform the registration procedure again
from the beginning.
7Initialize the tire pressure warning
system. ( P.335)
QWhen registering ID codes
OID code registration is performed while
driving at a vehicle speed of approxi-
mately 25 mph (40 km/h) or more.
OBefore performing ID code registration,
make sure that no wheels with tire pres-
sure warning valve and transmitters
installed are near the vehicle.
OMake sure to initialize the tire pressure warning system after
registering the ID
codes. If the system is initialized before
registering the ID codes, the initialized
values will be invalid.
OID codes can be registered by yourself,
but depending on the driving conditions
and driving environment, registration
may take some time to complete.
QCanceling ID code registration
OTo cancel ID code registration after it has
been started, turn the power switch off
before driving the vehicle.
If the vehicle is driven after ID code regis-
tration is started, to cancel registration,
perform the ID code registration start
procedure again and turn the power
switch off before driving.
OIf ID code registration has been can-
celed, the tire pressure warning light will
blink for approximately 1 minute when the
power switch is turned to ON mode and
then illuminate. The tire pressure warning
system will be operational when the tire
pressure warning light turns off.
OIf the warning light does not turn off even
after several minutes have elapsed, ID
code registration may not have been
canceled correctly. To cancel registra-
tion, perform the ID code registration
start procedure again and then turn the
power switch off before driving.
QIf ID codes are not registered properly
OIn the following situations, ID code regis-
tration may take longer than usual to be
completed or may not be possible. Nor-
mally, registration completes within
approximately 30 minutes.
• Vehicle is not parked for approximately 20 minutes or more before driving
• Vehicle is not driven at approximately 25
mph (40 km/h) or more
• Vehicle is driven on unpaved roads
• Vehicle is driven ne ar other vehicles and
system cannot recognize tire pressure
warning valve and tran smitters of your
vehicle over those of other vehicles
• Wheel with tire pressure warning valve
and transmitter installed is inside or near
the vehicle
OIf registration does not complete after
driving for 1 hour or more, perform the ID

3386-3. Do-it-yourself maintenance
code registration procedure again from
the beginning.
OIf the vehicle is reversed during registra-
tion, the data up to that point is reset, so
perform the registration procedure again
from the beginning.
OIn the following situations, ID code regis-
tration will not be started or was not com-
pleted properly and the system will not
operate properly. Perform the ID code
registration procedure again.
• If, when attempting to start ID code regis- tration, the tire pressure warning light
does not blink slowly 3 times.
• If, when the vehicle has been driven for about 20 minutes after performing ID
code registration, the tire pressure warn-
ing light blinks for approximately 1 minute
and then illuminates.
OIf ID code registration cannot be com-
pleted after performing the above proce-
dure, contact your Lexus dealer.
The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
(  P.407)
Tire valve
Tire inflation pressure
Checking the specifi ed tire infla-
tion pressure
Inspection and adjustment pro-
cedure
A

3396-3. Do-it-yourself maintenance
6
Maintenance and care
Tire pressure gauge
1 Remove the tire valve cap.
2 Press the tip of the tire pressure
gauge onto the tire valve.
3 Read the pressure using the gauge
gradations.
4 If the tire inflation pressure is not at
the recommended level, adjust the
pressure.
If you add too much air, press the
center of the valve to deflate.
5 After completing the tire inflation
pressure measurement and adjust-
ment, apply soapy water to the
valve and check for leakage.
6 Put the tire valve cap back on.
QTire inflation pressure check interval
You should check tire inflation pressure
every two weeks, or at least once a month.
Do not forget to check the spare.
QEffects of incorrect tire inflation pres-
sure
Driving with incorrect tire inflation pressure
may result in the following:
OReduced fuel economy
OReduced driving comfort and poor han-
dling
OReduced tire life due to wear
OReduced safety
ODamage to the drivetrain
If a tire needs frequent inflating, have it
checked by your Lexus dealer.
QInstructions for checking tire inflation
pressure
When checking tire inflation pressure,
observe the following:
OCheck only when the tires are cold.
If your vehicle has been parked for at
least 3 hours or has not been driven for more than 1 mile or 1.5 km, you will get an
accurate cold tire inflation pressure read-
ing.
OAlways use a tire pressure gauge.
It is difficult to judge if a tire is properly
inflated based only on its appearance.
OIt is normal for the tire inflation pressure
to be higher after driving as heat is gener-
ated in the tire. Do not reduce tire infla-
tion pressure after driving.
ONever exceed the vehicle capacity
weight.
Passengers and luggage weight should
be placed so that the vehicle is balanced.
B
WARNING
QProper inflation is critical to save tire
performance
Keep your tires properly inflated.
If the tires are not properly inflated, the
following conditions may occur which
could lead to an accident resulting in
death or serious injury:
OExcessive wear
OUneven wear
OPoor handling
OPossibility of blowouts resulting from
overheated tires
OAir leaking from between tire and
wheel
OWheel deformation and/or tire dam-
age
OGreater possibility of tire damage
while driving (due to road hazards,
expansion joints, sharp edges in the
road, etc.)

3406-3. Do-it-yourself maintenance
When replacing wheels, care should
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, diameter, rim width and inset
*.
Replacement wheels are available at
your Lexus dealer.
*: Conventionally referred to as offset.
Lexus does not recommend using the
following:
 Wheels of different sizes or types
 Used wheels
 Bent wheels that have been
straightened
QWhen replacing wheels
The wheels of your vehicle are equipped
with tire pressure warning valves and trans-
mitters that allow the tire pressure warning
system to provide advance warning in the
event of a loss in tire inflation pressure.
Whenever wheels are replaced, tire pres-
sure warning valves and transmitters must
be installed. ( P.334)
NOTICE
QWhen inspecting and adjusting tire
inflation pressure
Be sure to put the tire valve caps back
on.
If a valve cap is not installed, dirt or mois-
ture may get into the valve and cause an
air leak, resulting in decreased tire infla-
tion pressure.
Wheels
If a wheel is bent, cracked or heav-
ily corroded, it should be replaced.
Otherwise, the tire may separate
from the wheel or cause a loss of
handling control.
Wheel selection
WARNING
QWhen replacing wheels
ODo not use wheels that are a different
size from those recommended in the
Owner’s Manual, as this may result in a
loss of handling control.

3416-3. Do-it-yourself maintenance
6
Maintenance and care
Use only Lexus wheel nuts and
wrenches designed for use with
your aluminum wheels.
 When rotating, repairing or chang-
ing your tires, check that the wheel
nuts are still tight after driving 1000
miles (1600 km).
 Vehicles with 17-inch tires: Be care-
ful not to damage the aluminum
wheels when using tire chains.
 Use only Lexus genuine balance
weights or equivalent and a plastic or rubber hammer when balancing
your wheels.
WARNING
ONever use an inner tube in a leaking
wheel which is designed for a tubeless
tire. Doing so may result in an acci-
dent, causing death or serious injury.
QUse of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air
during driving, possibly causing an acci-
dent.
NOTICE
QReplacing tire pressure warning
valves and transmitters
OBecause tire repair or replacement
may affect the tire pressure warning
valves and transmitters, make sure to
have tires serviced by your Lexus
dealer or other qualified service shop.
In addition, make sure to purchase
your tire pressure warning valves and
transmitters at your Lexus dealer.
OEnsure that only genuine Lexus wheels
are used on your vehicle.
Tire pressure warning valves and
transmitters may not work properly
with non-genuine wheels.
Aluminum wheel precautions

3456-3. Do-it-yourself maintenance
6
Maintenance and care
6Reinstall the filter to the cover.
1 Engage the filter to the 2 claws as
shown in the illustration.
2 Engage the 3 claws to install the fil-
ter.
Make sure that the filter is not crooked or
deformed when installing it.
7Install the air intake vent cover.
1 Insert the tab of the cover as shown
in the illustration.
2 Push the cover to engage the 7
claws. 8
Using a Phillips screwdriver, install
the clip.
QScheduled maintenance of the air
intake vent is necessary when
In some situations such as when the vehicle
is used frequently or in heavy traffic or dusty
areas, the air intake vent may need to be
cleaned more regularly.
For details, refer to “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.
QCleaning the air intake vent
ODust in the air intake vent may interfere
with the cooling of the hybrid battery
(traction battery). If charging/discharg-
ing of the hybrid battery (traction battery)
becomes limited, the distance that the
vehicle can be driven using the electric
motor (traction motor) may be reduced
and the fuel economy may be reduced.
Inspect and clean the air intake vent peri-
odically.
OImproper handling of the air intake vent
cover and filter may re sult in damage to
them. If you have any concerns about
cleaning the filter, contact your Lexus
dealer.
QIf “Maintenance required for Traction
battery cooling parts See owner’s man-
ual” is displayed on the multi-informa-
tion display
OIf this warning message is displayed on
the multi-information display, remove the
air intake vent cover and clean the filter.
(  P.343)
OAfter cleaning the air intake vent, start
the hybrid system and check that the
warning message is no longer displayed.
After the hybrid system is started, it may

3466-3. Do-it-yourself maintenance
be necessary to drive the vehicle up to
approximately 20 minutes before the
warning message disappears. If the warn-
ing message does not disappear after
driving for appropriately 20 minutes,
have the vehicle inspected by your Lexus
dealer.
WARNING
QWhen cleaning the air intake vent
ODo not use water or other liquids to
clean the air intake vent. If water is
applied to the hybrid battery (traction
battery) or other components, a mal-
function or fire may occur.
OBefore cleaning the air intake vent,
make sure to turn the power switch off
to stop the hybrid system.
QWhen removing the air intake vent
cover
Do not touch the service plug located
near the air intake vent. ( P.63)
NOTICE
QWhen cleaning the air intake vent
When cleaning the air intake vent, make
sure to only use a vacuum to suck out
dust and clogs. If a compressed air blow
gun, etc. is used to blow out dust and
clogs, the dust or clogs may be pushed
into the air intake vent, which may affect
the performance of the hybrid battery
(traction battery) and cause a malfunc-
tion.
QTo prevent damage to the vehicle
ODo not allow water or foreign matter
to enter the air intake vent when the
cover is removed.
OCarefully handle the removed filter so
that it will not be damage.
If the filter is damaged, have it
replaced with a new filter by your
Lexus dealer.
OMake sure to reinstall the filter and
cover to their original positions after
cleaning.
ODo not install anything to the air intake
vent other than the exclusive filter for
this vehicle or use the vehicle without
the filter installed.
QIf “Maintenance required for Trac-
tion battery cooling parts See
owner’s manual” is displayed on the
multi-information display
If the vehicle is continuously driven with
the warning message (indicating that
charging/discharging of the hybrid bat-
tery (traction battery) may become lim-
ited) displayed, the hybrid battery
(traction battery) may malfunction.

3486-3. Do-it-yourself maintenance
WARNING
QBattery precautions
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury.
ODo not swallow the battery. Doing so
may cause chemical burns.
OA coin battery or button battery is
used in the electronic key. If a battery
is swallowed, it may cause severe
chemical burns in as little as 2 hours
and may result in death or serious
injury.
OKeep away new and removed batter-
ies from children.
OIf the cover cannot be firmly closed,
stop using the electr onic key and stow
the key in the place where children
cannot reach, and then contact your
Lexus dealer.
OIf you accidentally swallow a battery or
put a battery into a part of your body,
get emergency medical attention
immediately.
QTo prevent battery explosion or leak-
age of flammable liquid or gas
OReplace the battery with a new battery
of the same type. If a wrong type of
battery is used, it may explode.
ODo not expose batteries to extremely
low pressure due to high altitude or
extremely high temperatures.
ODo not burn, break or cut a battery.
NOTICE
QWhen replacing the battery
Use a screwdriver of appropriate size.
Applying excessive force may deform or
damage the cover.
QFor normal operation after replacing
the battery
Observe the following precautions to
prevent accidents:
OAlways work with dry hands.
Moisture may cause the battery to
rust.
ODo not touch or move any other com-
ponent inside the remote control.
ODo not bend either of the battery ter-
minals.

3506-3. Do-it-yourself maintenance
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
QAfter a fuse is replaced
OWhen installing the lid, make sure that the
tab is installed securely.
OIf the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement. ( P.352)
OIf the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.
QIf there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
A
B
A
B
A
B
WARNING
QTo prevent system breakdowns and
vehicle fire
Observe the following precautions.
Failure to do so may cause damage to
the vehicle, and possibly a fire or injury.
ONever use a fuse of a higher amperage
rating than that indicated, or use any
other object in place of a fuse.
OAlways use a genuine Lexus fuse or
equivalent.
Never replace a fuse with a wire, even
as a temporary fix.
ODo not modify the fuses or fuse boxes.
NOTICE
QBefore replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.

3556-3. Do-it-yourself maintenance
6
Maintenance and care
bumper.
8Engage the clips to the front
bumper to install the fender liner,
and then remove the protective
tape.
WARNING
QReplacing light bulb
OTurn off the light. Do not attempt to
replace the bulb immediately after
turning off the light.
The bulb become very hot and may
cause burns.
ODo not touch the glass portion of the
light bulb with bare hands. When it is
unavoidable to hold the glass portion,
use and hold with a clean dry cloth to
avoid getting moisture and oils on the
bulb.
Also, if the bulb is scratched or
dropped, it may blow out or crack.
OFully install light bulb and any parts
used to secure it. Failure to do so may
result in heat damage, fire, or water
entering the light unit. This may dam-
age the light or cause condensation to
build up on the lens.
QTo prevent damage or fire
OMake sure bulb is fully seated and
locked.
OCheck the wattage of the bulb before
installing to prevent heat damage.