ECU LEXUS ES300h 2022 Service Manual

1183-2. Opening, closing and locking the doors and trunk
effective range (detection areas), the sys-
tem may not operate properly in the fol-
lowing cases:
• The electronic key is too close to the win- dow or outside door handle, near the
ground, or in a high place when the doors
are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the center
of the rear bumper when the trunk is
opened.
• The electronic key is on the instrument
panel, rear package tray or floor, or in the
door pockets or glove box when the
hybrid system is started or power switch
modes are changed.
ODo not leave the electronic key on top of
the instrument panel or near the door
pockets when exiting the vehicle.
Depending on the radio wave reception
conditions, it may be detected by the
antenna outside the cabin and the doors
will become lockable from the outside,
possibly trapping the electronic key
inside the vehicle.
OAs long as the electronic key is within the
effective range, the doors may be locked
or unlocked by anyone. However, only
the doors detecting the electronic key
can be used to unlock the vehicle.
OEven if the electronic key is not inside the
vehicle, it may be possible to start the
hybrid system if the electronic key is near
the window.
OThe doors may unlock or lock if a large
amount of water splashes on the door
handle, such as in the rain or in a car
wash, when the electronic key is within
the effective range. (The doors will auto-
matically be locked after approximately
60 seconds if the doors are not opened
and closed.)
OIf the wireless remote control is used to
lock the doors when the electronic key is
near the vehicle, there is a possibility that
the door may not be unlocked by the
entry function. (Use the wireless remote
control to unlock the doors.)
OTouching the door lock sensor while
wearing gloves may delay or prevent
lock operation. Remove the gloves and
touch the lock sensor again.
OWhen the lock operation is performed
using the lock sensor, recognition signals
will be shown up to two consecutive
times. After this, no recognition signals
will be given.
OUnlocking the vehicle may take more
time if another electronic key is within the
effective range.
OIf the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. In this case, follow the follow-
ing correction procedures to wash the
vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle.
(Take care to ensure that the key is not
stolen.)
• Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( P.117)
OIf the electronic key is inside the vehicle
and a door handle becomes wet during a
car wash, a message may be shown on
the multi-information display and a
buzzer will sound outside the vehicle. To
turn off the alarm, lock all the doors.
OThe lock sensor may not work properly if
it comes into contact with ice, snow, mud,
etc.
Clean the lock sensor and attempt to
operate it again.
OA sudden approach to the effective
range or door handle may prevent the
doors from being unlocked. In this case,
return the door handle to the original
position and check that the doors unlock
before pulling the door handle again.
QWhen the vehicle is not driven for
extended periods
OTo prevent theft of the vehicle, do not
leave the electronic key within 6 ft. (2 m)
of the vehicle.
OThe smart access system with push-but-
ton start can be deactivated in advance.
OBattery-saving mode can reduce the
power consumption of electronic keys.
( P.117)

1263-4. Adjusting the steering wheel and mirrors
3-4.A djusting the steering wheel and mirrors
Manual adjustment type
1 Hold the steering wheel and pull
the lever down.
2 Adjust to the ideal position by mov-
ing the steering wheel horizontally
and vertically.
After adjustment, pull the lever up to
secure the steering wheel.
Power adjustment type
Operating the switch moves the steer-
ing wheel in the following directions: 1
Up
2 Down
3 Toward the driver
4 Away from the driver
QThe power adjustment type steering
wheel can be adjusted when
The power switch is in ACCESSORY or
ON mode.
QAutomatic adjustment of the steering
position (power adjustment type)
A desired steering position can be entered
to memory and recalled automatically by
the driving position memory system.
(  P.121)
QPower easy access system (vehicles
with power adjustment type steering
wheel)
The driver’s seat and steering wheel move
in accordance with power switch mode and
the driver’s seat belt condition. ( P.121)
QCustomization
The steering wheel movement can be
changed. (Customizable features: P.421)
Steering wheel
Adjustment procedure
WARNING
QCaution while driving
Do not adjust the steering wheel while
driving.
Doing so may cause the driver to mis-
handle the vehicle and cause an acci-
dent, resulting in death or serious injury.

1273-4. Adjusting the steering wheel and mirrors
3
Before driving
Press on or close to the mark.The height of the rear view mirror can
be adjusted to suit your driving pos-
ture.
Adjust the height of the rear view mir-
ror by moving it up and down.
Responding to the level of brightness
of the headlights of vehicles behind, the
reflected light is automatically
reduced.
Turn the automatic anti-glare function
mode on/off
WARNING
QAfter adjusting the steering wheel
(manual adjustment type)
Make sure that the steering wheel is
securely locked.
Otherwise, the steering wheel may move
suddenly, possibly causing an accident,
and resulting in death or serious injury.
Also, the horn may not sound if the steer-
ing wheel is not securely locked.
Sounding the horn
Inside rear view mirror
The rear view mirror’s position can
be adjusted to enable sufficient
confirmation of the rear view.
Adjusting the height of rear view
mirror
WARNING
QCaution while driving
Do not adjust the position of the mirror
while driving.
Doing so may lead to mishandling of the
vehicle and cause an accident, resulting
in death or serious injury.
Anti-glare function

1414-1. Before driving
4
Driving
WARNING
QIf you hear a squealing or scraping
noise (brake pad wear limit indica-
tors)
Have the brake pads checked and
replaced by your Lexus dealer as soon as
possible. Rotor damage may result if the
pads are not replaced when needed. It is
dangerous to drive the vehicle when the
wear limits of the brake pads and/or
those of the brake discs are exceeded.
QWhen the vehicle is stopped
ODo not depress the accelerator pedal
unnecessarily.
If the shift lever is in any position other
than P or N, the vehicle may acceler-
ate suddenly and unexpectedly, caus-
ing an accident.
OIn order to prevent accidents due to
the vehicle rolling away, always keep
depressing the brake pedal while
stopped with the “READY” indicator is
illuminated, and apply the parking
brake as necessary.
OIf the vehicle is stopped on an incline,
in order to prevent accidents caused
by the vehicle rolling forward or back-
ward, always depress the brake pedal
and securely apply the parking brake
as needed.
OAvoid revving or racing the engine.
Running the engine at high speed
while the vehicle is stopped may cause
the exhaust system to overheat, which
could result in a fire if combustible
material is nearby.
QWhen the vehicle is parked
ODo not leave glasses, cigarette light-
ers, spray cans, or soft drink cans in the
vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plas-
tic material of glasses to deform or
crack.
• Soft drink cans may fracture, causing the contents to spray over the interior
of the vehicle, and may also cause a
short circuit in the vehicle’s electrical
components.
ODo not leave cigarette lighters in the
vehicle. If a cigarette lighter is in a
place such as the glove box or on the
floor, it may be lit accidentally when
luggage is loaded or the seat is
adjusted, causing a fire.
ODo not attach adhesive discs to the
windshield or windows. Do not place
containers such as air fresheners on
the instrument panel or dashboard.
Adhesive discs or containers may act
as lenses, causing a fire in the vehicle.
ODo not leave a door or window open if
the curved glass is coated with a met-
allized film such as a silver-colored
one. Reflected sunlight may cause the
glass to act as a lens, causing a fire.
OAlways apply the parking brake, shift
the shift lever to P, stop the hybrid sys-
tem and lock the vehicle.
Do not leave the vehicle unattended
while the “READY” indicator is illumi-
nated.
If the vehicle is parked with the shift
lever in P but the parking brake is not
set, the vehicle may start to move, pos-
sibly leading to an accident.
ODo not touch the exhaust pipes while
the “READY” indicator is illuminated
or immediately after turning the hybrid
system off.
Doing so may cause burns.

1424-1. Before driving
WARNING
QWhen taking a nap in the vehicle
Always turn the hybrid system off. Oth-
erwise, if you accidentally move the shift
lever or depress the accelerator pedal,
this could cause an accident or fire due
to hybrid system overheating. Addition-
ally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may col-
lect and enter the vehicle, leading to
death or a serious health hazard.
QWhen braking
OWhen the brakes are wet, drive more
cautiously.
Braking distance increases when the
brakes are wet, and this may cause
one side of the vehicle to brake differ-
ently than the other side. Also, the
parking brake may not securely hold
the vehicle.
OIf the electronically controlled brake
system does not operate, do not follow
other vehicles closely and avoid hills or
sharp turns that require braking.
In this case, braking is still possible, but
the brake pedal should be depressed
more firmly than usual. Also, the brak-
ing distance will in crease. Have your
brakes fixed immediately.
OThe brake system consists of 2 or
more individual hydraulic systems; if
one of the systems fails, the other(s)
will still operate. In this case, the brake
pedal should be depressed more
firmly than usual and the braking dis-
tance will increase. Have your brakes
fixed immediately.
NOTICE
QWhen driving the vehicle
ODo not depress the accelerator and
brake pedals at the same time while
driving, as this may restrain the hybrid
system output.
ODo not use the accelerator pedal or
depress the accelerator and brake
pedals at the same time to hold the
vehicle on a hill.
QAvoiding damage to vehicle parts
ODo not turn the steering wheel fully in
either direction and hold it there for an
extended period of time.
Doing so may damage the power
steering motor.
OWhen driving over bumps in the road,
drive as slowly as possible to avoid
damaging the wheels, underside of the
vehicle, etc.
QIf you get a flat tire while driving
A flat or damaged tire may cause the fol-
lowing situations. Hold the steering
wheel firmly and gradually depress the
brake pedal to slow down the vehicle.
OIt may be difficult to control your vehi-
cle.
OThe vehicle will make abnormal
sounds or vibrations.
OThe vehicle will lean abnormally.
Information on what to do in case of a flat
tire ( P.379)
QWhen encountering flooded roads
Do not drive on a road that has flooded
after heavy rain etc. Doing so may cause
the following serious damage to the vehi-
cle:
OEngine stalling
OShort in electrical components
OEngine damage caused by water
immersion
In the event that you drive on a flooded
road and the vehicle is flooded, be sure
to have your Lexus dealer check the fol-
lowing:
OBrake function

1444-1. Before driving
Cargo capacity depends on the total
weight of the occupants.
(Cargo capacity) = (Total load capac-
ity)  (Total weight of occupants) Steps for Determining Correct Load
Limit

(1) Locate the statement “The com-
bined weight of occupants and cargo
should never exceed XXX kg or XXX
lbs.” on your vehicle’s placard.
(2) Determine the combined weight of
the driver and passengers that will be
riding in your vehicle.
(3) Subtract the combined weight of
the driver and passengers from XXX
kg or XXX lbs.
(4) The resulting figure equals the
available amount of cargo and luggage
load capacity.
For example, if the “XXX” amount
equals 1400 lbs. and there will be five
150 lb passengers in your vehicle, the
amount of available cargo and luggage
load capacity is 650 lbs. (1400 − 750
(5  150) = 650 lbs.)
(5) Determine the combined weight of
luggage and cargo being loaded on
the vehicle. That weight may not safely
exceed the available cargo and lug-
gage load capacity calculated in Step
4.
(6) If your vehicle will be towing a
trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this
reduces the available cargo and lug-
gage load capacity of your vehicle.
(  P.146)Lexus does not recommend towing a
trailer with your vehicle. Your vehicle is not
designed for trailer towing.
Cargo and luggage
Take notice of the following infor-
mation about storage precautions,
cargo capacity and load:
WARNING
QThings that must not be carried in the
trunk
The following things may cause a fire if
loaded in the trunk:
OReceptacles containing gasoline
OAerosol cans
QStorage precautions
Observe the following precautions.
Failure to do so may prevent the pedals
from being depressed properly, may
block the driver’s vision, or may result in
items hitting the driver or passengers,
possibly causing an accident.
OStow cargo and luggage in the trunk
whenever possible.
ODo not place cargo or luggage in or on
the following locations.
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the package tray
• On the instrument panel
• On the dashboard
• In front of the Center Display
OSecure all items in the occupant com-
partment.
Capacity and distribution

1744-4. Refueling
4-4 . Ref ueling
Close all the doors and windows,
and turn the power switch off.
 Confirm the type of fuel.
QFuel types
 P.410
QFuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi-
cle has a fuel tank opening that only accom-
modates the special nozzle on unleaded
fuel pumps.
Opening the fuel tank cap
The fuel tank of your vehicle has a
special structure, which requires a
reduction in fuel tank pressure
before refueling. After the opener
switch has been pressed, it will take
several seconds until the vehicle is
ready for refueling.
Before refueling the vehicle
WARNING
QWhen refueling the vehicle
Observe the following precautions while
refueling the vehicle. Failure to do so
may result in death or serious injury.
OAfter exiting the vehicle and before
opening the fuel door, touch an
unpainted metal surface to discharge
any static electricity. It is important to
discharge static electricity before refu-
eling because sparks resulting from
static electricity can cause fuel vapors
to ignite while refueling.
OAlways hold the grips on the fuel tank
cap and turn it slowly to remove it.
A whooshing sound may be heard
when the fuel tank cap is loosened.
Wait until the sound cannot be heard
before fully removing the cap. In hot
weather, pressurized fuel may spray
out the filler neck and cause injury.
ODo not allow anyone that has not dis-
charged static electricity from their
body to come close to an open fuel
tank.
ODo not inhale vaporized fuel.
Fuel contains substances that are
harmful if inhaled.
ODo not smoke while refueling the vehi-
cle.
Doing so may cause the fuel to ignite
and cause a fire.
ODo not return to the vehicle or touch
any person or object that is statically
charged.
This may cause static electricity to
build up, resulting in a possible ignition
hazard.
QWhen refueling
Observe the following precautions to
prevent fuel overflowing from the fuel
tank:
OSecurely insert the fuel nozzle into the
fuel filler neck.
OStop filling the tank after the fuel noz-
zle automatically clicks off.
ODo not top off the fuel tank.
NOTICE
QRefueling
OFinish refueling within 30 minutes. If
more than 30 minutes passes, the
internal valve closes. In this condition,
fuel may overflow during the refueling
process.
Press the fuel filler door opener switch
again.

1754-4. Refueling
4
Driving
1Press the opener switch.
The fuel filler door will open within about
10 seconds of the switch being pressed.
Before refueling is possible, a message will
be shown on the multi-information display
in the instrument cluster to indicate the
progress of the fuel filler door opener.
2Turn the fuel tank cap slowly and
remove it, then hang it on the back
of the fuel filler door.
QIf the fuel filler door cannot be opened
 P.388
After refueling, turn the fuel tank cap
until you hear a click. Once the cap is
released, it will turn slightly in the
opposite direction.
QWhen “Check Fuel Cap” is displayed on
the multi-information display
The fuel tank cap may be unfastened or
loose. Turn the power switch off, check the
cap and tighten it securely. If the message
remains, wait a few seconds and then turn
the power switch off once again.
NOTICE
OMake sure that the fuel filler door lock
is not pushed by the fuel nozzle boot,
etc. If the switch is held, the internal
valve closes and fuel may overflow. To
prevent it, press the fuel filler door
opener switch again.
ODo not spill fuel during refueling.
Doing so may damage the vehicle,
such as causing the emission control
system to operate abnormally or dam-
aging fuel system components or the
vehicle’s painted surface.
Opening the fuel tank cap
Closing the fuel tank cap

2184-5. Using the driving support systems
QConditions under which the system may
not function correctly
OThe Blind Spot Monitor may not detect
vehicles correctly in the following situa-
tions:
• When the sensor is misaligned due to a strong impact to the sensor or its sur-
rounding area
• When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area
on the rear bumper
• When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap between each vehi-
cle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in
speed between your vehicle and the
vehicle that enters the detection area
• When the difference in speed between
your vehicle and another vehicle is
changing
• When a vehicle enters a detection area
traveling at about the same speed as your
vehicle
• As your vehicle starts from a stop, a vehi-
cle remains in the detection area
• When driving up and down consecutive steep inclines, such as hills, dips in the
road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a lane, and the
vehicle in an adjacent lane is far away
from your vehicle
• When an accessory (such as a bicycle carrier) or towing eyelet is installed to the
rear of the vehicle
• When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area
• Immediately after the Blind Spot Monitor
is turned on
OInstances of the Blind Spot Monitor
unnecessarily detecting a vehicle and/or
object may increase in the following situ-
ations:
• When the sensor is misaligned due to a strong impact to the sensor or its sur- rounding area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the
detection area is short
• When driving up and down consecutive steep inclines, such as hills, dips in the
road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehi-
cle traveling in a lane other than the adja-
cent lanes enters the detection area
• When driving on roads with sharp bends,
consecutive curves, or uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle
and a following vehicle is short
• When an accessory (such as a bicycle carrier) or towing eyelet is installed to the
rear of the vehicle

2885-5. Using the storage features
Raise the hooks when needed.
The cargo hooks are provided for securing
loose items.
Lift the luggage mat up.
Trunk features
Cargo hooks
WARNING
QWhen the cargo net hooks are not in
use
To avoid injury, always return the cargo
net hooks to their stowed positions when
not in use.
Grocery bag hooks
Luggage mat