2022 LEXUS ES300h warning

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.

357
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers.................. 358
If your vehicle has to be stopped in an emergency ..................... 358
If the vehicle is submerged or water on the road is rising .. 359
7-2. Steps to take in an emergency
If your vehicle needs to be towed......................................................... 361
If you think something is wrong ........................................................ 362
If a warning light turns on or a warning buzzer sounds ....... 364
If a warning message is displayed ........................................................ 374
If you have a flat tire.................. 379
If the hybrid system will not start ........................................................ 386
If you lose your keys ................. 388
If the fuel filler door cannot be opened........................................ 388
If the electronic key does not operate properly .................... 389
If the 12-volt battery is discharged ......................................................... 391
If your vehicle overheats ........ 396
If the vehicle becomes stuck 399

3597-1. Essential information
7
When trouble arises
press it briefly 3 times or more in
succession.
5 Stop the vehicle in a safe place by
the road.
If the door can be opened, open the
door and exit the vehicle.
 If the door can not be opened, open
the window using the power win-
dow switch and ensure an escape
route.
 If the window can be opened, exit
the vehicle through the window.
 If the door and window cannot be
opened due to the rising water,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle and then
open the door after waiting for the
rising water to enter the vehicle, and
exit the vehicle. When the outside
water level exceeds half the height
of the door, the door cannot be
opened from the inside due to water
pressure.
QWater level exceeds the floor
When the water level exceeds the floor and
WARNING
QIf the hybrid system has to be turned
off while driving
Power assist for the steering wheel will
be lost, making the steering wheel
heavier to turn. Decelerate as much as
possible before turning off the hybrid
system.
If the vehicle is submerged
or water on the road is rising
This vehicle is not designed to be
able to drive on roads that are
deeply flooded with water. Do not
drive on roads where the roads may
be submerged or the water may be
rising. It is dangerous to remain in
the vehicle, if it anticipated that the
vehicle will be flooded or set a drift.
Remain calm and follow the follow-
ing.

3607-1. Essential information
time has passed, the electrical equipment
will get damaged, the power windows will
not operate, the engine and motor will stop,
and the vehicle may not be able to get mov-
ing.
QUsing an emergency escape hammer*1
Laminated glass*2 is used in the windshield
and the windows on this vehicle.
Laminated glass cannot be shattered with
an emergency hammer
*1.*1: Contact your Lexus dealer or
aftermarket accessory manufacturer for
further information about an emergency
hammer.
*2: If equipped
QHow to distinguish laminated glass
When looking from the cross-sectional
view point, laminated glass is two sheets of
glass pasted together.
Laminated glass
Tempered glass
WARNING
QCaution while driving
Do not drive on roads where the roads
may be submerged or the water may be
rising. Otherwise the vehicle may be
damaged and cannot move, as well as
become flooded and set a drift, which
may lead to death.
A
B

3617-2. Steps to take in an emergency
7
When trouble arises
7-2.Steps to take in an emergency
The following may indicate a problem
with your transmission. Contact your
Lexus dealer or commercial towing
service before towing.
The hybrid system warning message
is shown on the multi-information
display and the vehicle does not
move.
 The vehicle makes an abnormal
sound.
From the front Release the parking brake.
Turn automatic mode off. (
P.160)
From the rear
Use a towing dolly under the front
wheels.
If your vehicl e needs to be
towed
If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.
Situations when it is necessary to
contact dealers before towing
Towing with a wheel-lift type
truck
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
QWhen towing the vehicle
Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the front wheels contacting
the ground, the drivetrain and related
parts may be damaged or electricity
generated by the operation of the motor
may cause a fire to occur depending on
the nature of the damage or malfunction.