2019 Lexus ES300h fuel pressure

3156-3. Do-it-yourself maintenance
6
Maintenance and care
Radiator and
condenser
( P.321)

Tire inflation
pressure
( P.334)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.322)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Make sure that the “IGNITION ON”
on the multi-information display and
the “READY” indicator are both off.
●Keep hands, clothi ng and tools away
from the moving fan and engine drive
belt.
●Be careful not to touch the engine,
power control unit, radiator, exhaust
manifold, etc. right after driving as they
may be hot. Oil and other fluids may
also be hot.
●Do not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are
flammable.
ItemsParts and tools■When working near the electric cool-
ing fan or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the
electric cooling fan may automatically
start to run if the air conditioning is on
and/or the coolant temperature is high.
(  P.321)
■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

3356-3. 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 measurem ent and adjust-
ment, apply soapy water to the
valve and check for leakage.
6
Put the tire valve cap back on.
■Tire 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.
■Effects of incorrect tire inflation pres-
sure
Driving with incorrect ti re inflation pressure
may result in the following:
●Reduced fuel economy
●Reduced driving comfort and poor han-
dling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drivetrain
If a tire needs frequent inflating, have it
checked by your Lexus dealer.
■Instructions for checking tire inflation
pressure
When checking tire inflation pressure,
observe the following:
●Check 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.
●Always use a tire pressure gauge.
It is difficult to judge if a tire is properly
inflated based only on its appearance.
●It is normal for the ti
re inflation pressure
to be higher after driving as heat is gen-
erated in the tire. Do not reduce tire infla-
tion pressure after driving.
●Never exceed the vehicle capacity
weight.
Passengers and luggage weight should
be placed so that the vehicle is balanced.
B
WARNING
■Proper 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:
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resulting from
overheated tires
●Air leaking from between tire and
wheel
●Wheel deformation and/or tire dam-
age
●Greater possibility of tire damage
while driving (due to road hazards,
expansion joints, sharp edges in the
road, etc.)

3677-2. Steps to take in an emergency
7
When trouble arises
WARNING
●Avoid abrupt maneuvering and brak-
ing.
If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], yo u should determine
the proper tire infl ation pressure for
those tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale
(tire pressure warnin g light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).
Your vehicle has also been equipped with
a TPMS (tire pressure warning system)
malfunction indicator to indicate when
the system is not operating properly. The
TPMS (tire pressure warning system)
malfunction indicator is combined with
the low tire pressure telltale (tire pres-
sure warning light) . When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS (tire pressure warning system)
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
(tire pressure warning system) from func-
tioning properly. Always check the
TPMS (tire pressure warning system)
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS (tire
pressure warning system) to continue to
function properly.
NOTICE
■To ensure the tire pressure warning
system operates properly
Do not install tires with different specifi-
cations or makers, as the tire pressure
warning system may not operate prop-
erly.

3797-2. Steps to take in an emergency
7
When trouble arises
One of the following may be the cause
of the problem:
The electronic key may not be func-
tioning properly. ( P.383)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( P.161)
 There may be a malfunction in the
immobilizer system. ( P.60)
 There may be a malfunction in the
steering lock system.
 The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system.
One of the following may be the cause
WARNING
■Speed limit when using the compact
spare tire
Do not drive at speeds in excess of 50
mph (80 km/h) when a compact spare
tire is installed on the vehicle.
The compact spare tire is not designed
for driving at high speeds. Failure to
observe this precaution may lead to an
accident causing deat h or serious injury.
■After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their
storage location to reduce the possibility
of personal injury during a collision or
sudden braking.
NOTICE
■Be careful when driving over bumps
with the compact spare tire installed
on the vehicle
The vehicle becomes lower when driving
with the compact spare tire compared to
when driving with standard tires. Be
careful when driving over uneven road
surfaces.
■Driving with tire chains and the com-
pact spare tire
Do not fit tire chains to the compact
spare tire.
Tire chains may damage the vehicle body
and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pr essure warning valve
and transmitter may be damaged if not
handled correctly.
If the hybrid system will not
s
tart
Reasons for the hybrid system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:
The hybrid system will not start
even though the correct starting
procedure is being followed.
(  P.135)
The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.

3817-2. Steps to take in an emergency
7
When trouble arises
Remove the cover inside the trunk and
pull the lever.
Using the lever to open the fuel filler door
may not allow for an adequate reduction in
fuel tank pressure before refueling. To pre-
vent fuel from spilling out, turn the cap
slowly when removing it. During refueling,
fuel may spill out from the filler opening
due to air being discharged from inside the
fuel tank. Therefore, fill the fuel tank care-
fully and slowly.
If you lose your keys
New genuine mechanical keys can
be made by your Lexus dealer using
another mechanical key and the
key number stamped on your key
number plate. Keep the plate in a
safe place such as your wallet, not in
the vehicle.
NOTICE
■When an electronic key is lost
If the electronic key remains lost, the risk
of vehicle theft increases significantly.
Visit your Lexus deal er immediately with
all remaining electronic keys that were
provided with your vehicle.
If the fuel filler door cannot
b
e opened
If the fuel filler door opener switch
cannot be operated, contact your
Lexus dealer to service the vehicle.
In case where refueling is urgently
necessary, the following procedure
can be used to open the fuel filler
door.
Opening the fuel filler door

4078-1. Specifications
8
Vehicle specifications
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire pressure when the vehicle has been parked for three hours or
more, or has not been driven more than 1 mile or 1.5 km under that
condition
Maximum inflation
pressureThe maximum cold inflated pressure to which a tire may be inflated,
shown on the sidewall of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a manufacturer
Accessory weight
The combined weight (in excess of those standard items which may
be replaced) of hybrid transmissi on, power steering, power brakes,
power windows, power se ats, radio and heater, to the extent that
these items are available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment, including the
maximum capacity of fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional engine

444Alphabetical index
Ignition switch (power switch) ..............135
Overheating.................................................389
Power switch .................................................135
Tachometer ..................................................... 70
Engine coolant.............................................. 320 Capacity ......................................................... 397
Checking ....................................................... 320
Preparing and checking before winter......................................................................... 242
Engine coolant temperature gauge ....... 70
Engine oil ......................................................... 318 Capacity .........................................................396
Checking ........................................................ 318
Preparing and checking before winter......................................................................... 242
Warning light ...............................................359
Engine oil maintenance data .................. 320
EPS (Electric Power Steering) .............. 236 Function .......................................................... 236
Warning light ...............................................360
EV drive mode................................................139
Event data recorder (EDR) ........................... 8
EV indicator ...................................................... 54
F
Flat tire ............................................................. 372 Tire pressure warning system ............. 328
Floor mats ...........................................................22
Fluid Brake................................................................398
Hybrid transmission .................................398
Washer ........................................................... 322
Footwell light ................................................. 265
Front passenger occupant classification system ...............................................................37
Front seats ....................................................... 109
Adjustment..................................................... 109
Cleaning.........................................................303
Correct driving posture .............................23
Driving position memory .......................... 110
Head restraints .............................................. 113
Memory recall function ............................... 111 Power easy access system ...................... 110
Seat heaters ....................................................261
Seat position memory ................................ 110
Seat ventilators ..............................................261
Front side marker light ............................... 150 Light switch .................................................... 150
Front side marker lights Replacing light bulbs ....................344, 345
Front turn signal lights .................................145 Replacing light bulbs ....................344, 345
Turn signal lever .......................................... 145
Fuel ....................................................................... 161 Capacity ........................................................ 395
Fuel gauge ........................................................ 70
Information ..................................................... 401
Refueling............................................................ 161
Type ................................................................. 395
Warning light ................................................ 361
Fuel consumption Average fuel economy .............................. 74
Current fuel consumption ........................ 74
Fuel filler door .................................................. 161 If the fuel filler do or cannot be opened
........................................................................... 381
Refueling............................................................ 161
Fuel gauge ......................................................... 70
Fuses ...................................................................341
G
Garage door opener ................................. 284
Gauges ............................................................... 70
Glove box ....................................................... 269
Glove box light ............................................. 269
Grocery bag hooks ...................................... 271
H
Hands Free Power Trunk Lid .................... 98
Headlights ....................................................... 150 Adaptive Front-lighting System (AFS)........................................................................... 152
Automatic High Beam system ............. 153

447What to do if... (Troubleshooting)Alphabetical index447
Master warning light .................................. 365
Menu icons.........................................................73
MeterClock .................................................................. 70
Hybrid System Indicator ............................. 71
Indicators .......................................................... 67
Instrument panel light control .................72
Meter control switches ...............................74
Meters ................................................................ 70
Multi-information display ...........................73
Settings .............................................................. 75
Warning lights ............................................ 358
Warning message.....................................368
Mirrors Inside rear view mirror............................... 116
Outside rear view mirror defoggers254
Outside rear view mirrors ........................117
Vanity mirrors...............................................272
Moon roof Door lock linked moon roof operation........................................................................... 123
Jam protection function............................ 123
Operation........................................................ 122
Multi-information display .............................73 Audio system-linked display................... 75
Drive information 1/Drive information 2.............................................................................74
Driving information display.......................74
Driving support system information dis- play ................................................................... 75
Dynamic radar cruise control with full- speed range ................................................187
Energy monitor................................................81
LTA (Lane-Tracing Assist) ...................... 181
Menu icons .......................................................73
Meter control switches ...............................74
Navigation system-linked display ........ 75
Pop-up display................................................73
Settings .............................................................. 75
Suggestion function..................................... 76
Tire pressure ................................................ 328
Warning message.....................................368N
Navigation system-linked display.....75, 77
Noise from under vehicle ...............................6
O
Odometer ..........................................................72
Odometer and trip meter display “ODO TRIP” switch .................................... 72
Display items ................................................... 72
Pop-up display ............................................... 72
“ODO TRIP” switch .......................................72
Oil Engine oil....................................................... 396
Opener Fuel filler door ................................................. 161
Hood ................................................................. 316
Trunk ................................................................... 97
Outer foot lights Replacing light bulbs ................................344
Outside door handle lig hts...................... 265
Outside rear view mirrors .......................... 117 Adjustment ....................................................... 117
BSM (Blind Spot Monitor)......................197
Folding................................................................ 118
Linked mirror functi on when reversing
............................................................................. 118
Mirror position memory ............................ 110
Outside rear view mirror defoggers254
RCTA function ............................................... 211
Outside temperature.................................... 70
Overheating .................................................. 389
P
Paddle shift switches ..........................143, 144
Panic mode ....................................................... 89
Parking assist sensors (intuitive parking assist) ............................................................. 205
Parking brake..................................................146 Operation ....................................................... 146
Parking brake engaged warning buzzer............................................................................147