
4TABLE OF CONTENTS
Emission inspection and mainte-nance (I/M) programs ............. 313
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 314
Hood................................................... 316
Positioning a floor jack................ 316
Engine compartment................... 318
12-volt battery................................ 323
Tires ................................................... 326
Tire inflation pressure ................. 334
Wheels.............................................. 336
Air conditioning  filter..................338
Electronic key battery ................ 339
Checking and replacing fuses . 341
Headlight aim................................. 343
Light bulbs ....................................... 344
7-1. Essential information Emergency flashers..................... 350
If your vehicle has to be stopped in  an emergency ............................. 350
If the vehicle is trapped in rising  water................................................ 351
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................... 353
If you think something is wrong ........................................................... 356
If a warning light turns on or a warn- ing buzzer sounds ..................... 358
If a warning message is displayed ........................................................... 368
If you have a flat tire..................... 372If the hybrid syst
em will not start
.......................................................... 379
If you lose your keys..................... 381
If the fuel filler door cannot be  opened ........................................... 381
If the electronic key does not oper- ate properly ................................. 382
If the 12-volt battery is discharged .......................................................... 384
If your vehicle overheats ........... 389
If the vehicle becomes stuck ... 392
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 394
Fuel information............................. 401
Tire information ............................ 403
8-2. Customization Customizable features ................ 412
8-3. Items to initialize Items to initialize ........................... 423
9-1. For owners Reporting safety defects for U.S. owners ........................................... 426
Seat belt instructions for Canadian  owners (in French) ................... 426
SRS airbag instructions for Cana- dian owners (in French) ......... 428
Headlight aim instructions for  Canadian owners (in French) 434
7When trouble arises
8Vehicle specifications
9For owners 

591-3. Hybrid system
1
For safety and security
When a certain level of impact is 
detected by the impact sensor, the 
emergency shut off system blocks the 
high voltage current and stops the fuel 
pump to minimize the risk of electrocu-
tion and fuel leakage. If the emergency 
shut off system activates, your vehicle 
will not restart. To restart the hybrid system, contact your Lexus dealer.
A message is automatically displayed 
when a malfunction occurs in the 
hybrid system or an improper opera-
tion is attempted.
If a warning message is shown on the 
multi-information display, read the 
message and follow the instructions.
■If a warning light comes on, a warning 
message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In this 
case, try to start the system again. If the 
“READY” indicator does not come on, con-
tact your Lexus dealer.
NOTICE
■Hybrid battery (traction battery) air 
intake vent
●Make sure not to block the air intake 
vent with anything, such as a seat 
cover, plastic cover, or luggage. If the 
vents become blocked, the hybrid bat-
tery (traction battery) input and output 
may be restricted, leading to a reduc-
tion in hybrid battery (traction battery) 
output and a malfunction.
●When dust etc. has accumulated in the 
air intake vent, periodically clean it 
with a vacuum cleaner to prevent the 
vent from clogging.
●A filter is installed to the air intake vent. 
When the filter remains noticeably 
dirty even after cleaning the air intake 
vent, filter cleaning or replacement is 
recommended. When cleaning or 
replacing the filter, contact your Lexus 
dealer. 
Refer to P.304 for details on how to 
clean the filter.
●Do not get water or foreign materials 
in the air intake vent as this may cause 
a short circuit and damage the hybrid 
battery (traction battery).
●Do not carry large amounts of water 
such as water cooler bottles in the 
vehicle. If water spills onto the hybrid 
battery (traction battery), the battery 
may be damaged. Have the vehicle 
inspected by your
 Lexus dealer.
Emergency shut off system
Hybrid warning message 

2555-3. Using the air conditioning system
5
Interior features
ditioning setting depending on the 
temperature setting or inside tempera-
ture.
■Registering air conditioning settings to 
electronic keys
●Unlocking the vehicle using an electronic 
key and turning the power switch to ON 
mode will recall that key’s registered air 
conditioning settings.
●When the power switch is turned off, the 
current air conditioning settings will auto-
matically be registered to the electronic 
key that was used to unlock the vehicle.
●The system may not operate correctly if 
more than one electronic key is in the 
vicinity or if the smart access system with 
push-button start is used to unlock the 
passenger door.
●Vehicles with the driving position mem-
ory: The doors that can recall the air con-
ditioning setting
* when unlocked using 
the smart access system with push-but-
ton start can be changed. For details, 
contact your Lexus dealer.
*: The doors that can recall the driving posi-
tion memory are changed at the same 
time.
■Operation of the air conditioning sys-
tem in Eco drive mode
In Eco drive mode, the air conditioning sys-
tem is controlled as follows to prioritize fuel 
efficiency:
●Engine speed and compressor operation 
controlled to restri ct heating/cooling 
capacity
●Fan speed restricted when automatic 
mode is selected
To improve air conditioning performance, 
perform the following operations:
●Turn off eco air conditioning mode 
(  P.255)
●Adjust the fan speed
●Turn off Eco drive mode ( P.202)
■When the outside temperature falls to 
nearly 32°F (0°C)
The dehumidification function may not  operate even when “A/C” is selected.
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning 
system to the outside air mode.
●During use, various odors from inside and 
outside the vehicle may enter into and 
accumulate in the air conditioning sys-
tem. This may then cause odor to be 
emitted from the vents.
●When parking, the system automatically 
switches to fresh air intake mode to 
encourage better air circulation through-
out the vehicle, helping to reduce odors 
that occur when starting the vehicle.
■Using the voice command system
Air conditioning system can be operated 
using voice commands. For details, refer to 
the “NAVIGATION AND MULTIMEDIA 
SYSTEM OWNER’S MANUAL”.
■Air conditioning filter
 P.338
■Customization
Settings (e.g. A/C Auto  switch operation) 
can be changed. 
(Customizable features  P.412)
WARNING
■To prevent the windshield from fog-
ging up
Do not use the windshield defogger 
switch during cool air operation in 
extremely humid weather. The difference 
between the temperature of the outside 
air and that of the windshield can cause 
the outer surface of the windshield to fog 
up, blocking your vision.
■When the outside rear view mirror 
defoggers are operating
Do not touch the outside rear view mir-
ror surfaces, as they can become very 
hot and burn you. 

3066-1. 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.
■Scheduled maintenance of the air 
intake vent filter 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 filter may need to 
be cleaned more regularly.
For details, refer to “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.
■Air intake vent maintenance
●If the vehicle is driven with the air intake 
vent clogged, the hybrid battery (traction 
battery) may overheat and the fuel con-
sumption may increase.
●Depending on the conditions under 
which the vehicle is used, the air intake 
vent may need to be cleaned more regu-
larly.
■Cleaning the air intake vent filter
●Improper handling of the air intake vent 
cover and filter may result in damage to 
them. If you have any concerns about 
cleaning the filter, contact your Lexus 
dealer.
●If the vehicle is driven with the air intake 
vent filter clogged, the hybrid battery 
(traction battery) may overheat and the 
fuel consumption may increase.
●Depending on the conditions under 
which the vehicle is used, the air intake 
vent filter may need to be cleaned more 
regularly. 

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. 
![Lexus ES300h 2019  Owners Manual (OM06178U) 3968-1. Specifications
■Oil capacity (Drain and refill [Ref-
erence
*])
*: The engine oil capacity is a reference quantity to be used when changing the 
engine oil. Warm up the engine and turn 
off  Lexus ES300h 2019  Owners Manual (OM06178U) 3968-1. Specifications
■Oil capacity (Drain and refill [Ref-
erence
*])
*: The engine oil capacity is a reference quantity to be used when changing the 
engine oil. Warm up the engine and turn 
off](/manual-img/36/12858/w960_12858-395.png)
3968-1. Specifications
■Oil capacity (Drain and refill [Ref-
erence
*])
*: The engine oil capacity is a reference quantity to be used when changing the 
engine oil. Warm up the engine and turn 
off the hybrid system, wait more than 5 
minutes, and check the oil level on the 
dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in 
your Lexus vehicle. Use Lexus 
approved “Toyota Genuine Motor Oil” 
or equivalent to satisfy the following 
grade and viscosity.
Oil grade: API SN/RC multigrade 
engine oil
Recommended viscosity: SAE 0W-16 SAE 0W-16 is the best choice for good 
fuel economy and good
 starting in cold 
weather.
If SAE 0W-16 is not available, SAE 
0W-20 oil may be used. However, it 
must be replaced with SAE 0W-16 at 
the next oil change.
Outside temperature
Oil viscosity (0W-16 is explained here 
as an example):
• The 0W in 0W-16 indicates the  characteristic of the oil which allows 
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output88 kW
Maximum torque149 ft•lbf (202 N•m, 20.6 kgf•m)
Hybrid battery (traction battery)
TypeNickel-metal hydride battery
Voltage7.2 V/cell
Capacity6.5 Ah (3HR)
Quantity34 modules
Overall voltage244.8 V
Lubrication system
With filter4.8 qt. (4.5 L, 4.0 Imp.qt.)
Without filter4.4 qt. (4.2 L, 3.7 Imp.qt.)
A 

441What to do if... (Troubleshooting)441Alphabetical index
Alphabetical index
A
A/C ................................................................... 253Air conditioning filter ...............................338
Automatic air conditioning system ... 253
ABS (Anti-lock Brake System).............. 236 Function .......................................................... 236
Warning light ...............................................360
ACA (Active Cornering Assist) ........... 236
Active Cornering Assist (ACA) ........... 236
Adaptive Front-lighting System (AFS) .152
AFS (Adaptive Front-lighting System) .152
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi-tions .................................................................... 31
Curtain shield airbag  precautions ....... 33
Front passenger occupant classification  system ..............................................................37
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 33
Side and curtain shield airbags operating  conditions........................................................ 31
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ......................................359
Air conditioning filter ................................. 338
Air conditioning system ............................ 253 Air conditioning filter ...............................338
Automatic air conditioning system ... 253
Alarm ................................................................... 62 Alarm .................................................................. 62
Warning buzzer ........................................ 358
Anchor brackets ...................................... 43, 51
Antennas (smart access system with push- button start) ..................................................102 Anti-lock Brake System (ABS).............. 236
Function ..........................................................236
Warning light .............................................. 360
Approach warning........................................193
Armrest..............................................................281
Assist grips .......................................................281
Audio system-linked display ...................... 75
Auto Glide Control .................................... 203
Automatic headlight leveling system ..... 151
Automatic High Beam ................................153
Automatic light control system............... 150
Auxiliary box.................................................. 270
Average fuel economy..................................74
Average vehicle speed .................................74
B
Back-up lights Replacing light bulbs ................................344
Battery (12-volt battery) ........................... 323 Battery checking ........................................ 323
If the 12-volt battery is discharged ... 384
Preparing and checking before winter.......................................................................... 242
Warning light .............................................. 359
Battery (traction batter y) ............................ 56
Blind Spot Monitor (BSM)......................... 197
Brake Brake hold ...................................................... 148
Fluid.................................................................. 398
Parking brake ............................................... 146
Regenerative braking ................................. 54
Warning light .............................................. 358
Brake assist .................................................... 236
Break-in tips..................................................... 127
Brightness control Instrument panel light control................. 72
BSM (Blind Spot Monitor)......................... 197
C
Care ...................................................... 300, 303 Aluminum wheels ..................................... 300