check engine LEXUS ES300h 2022 Owner's Manual

3276-3. Do-it-yourself maintenance
6
Maintenance and care
QChecking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
QAdding fluid
Make sure to check the fluid type and
prepare the necessary items.
 Fluid type
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
Item
Clean funnel
QBrake fluid can absorb moisture from
the air
Excess moisture in the brake fluid can
cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.
If any washer does not work or “Wind-
shield Washer Fluid Low” is shown on
the multi-information display, the
washer tank may be empty. Add
washer fluid.
WARNING
QWhen the hybrid system is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
Checking and adding the brake
fluid
WARNING
QWhen filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
If fluid gets on your hands or in your eyes,
flush the affected area with clean water
immediately.
If you still experience discomfort, see a
doctor.
NOTICE
QIf the fluid level is low or high
It is normal for the brake fluid level to go
down slightly as the brake pads wear out
or when the fluid level in the accumulator
is high.
If the reservoir needs frequent refilling,
there may be a serious problem.
Adding the washer fluid
WARNING
QWhen adding washer fluid
Do not add washer fluid when the hybrid
system is hot or operating as washer fluid
contains alcohol and may catch fire if
spilled on the engine etc.

3496-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the power switch off.
2 Open the Fuse box cover.
Engine compartment: type A fuse
box
Push the tab in and lift the lid off.
Engine compartment: type B fuse
box
Push the tab in and lift the lid off.
Driver’s side instrument panel
Push the tab in and remove the lid. Make sure to push the tab in during
removal or installation.
3
Remove the fuse with the pullout
tool.
Only type A fuses can be removed using
the pullout tool.
4Check if the fuse is blown.
Type A and B:
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Type C:
Contact your Lexus dealer.
Type A
Checking and replacing
fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses

3767-2. Steps to take in an emergency
*: A buzzer sounds the first time a message is shown on the multi-information display.
In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.
 If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective action according to the warning light. ( P.364)
QWarning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
QWarning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
QIf “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check the level
of the engine oil, and add if necessary.
This message may appear if the vehicle is
stopped on a slope. Move the vehicle to a
level surface and check to see if the mes-
sage disappears.
QIf “Hybrid System Stopped Steering
Power Low” is displayed
This message is displayed if the hybrid sys-
tem is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering wheel
firmly and operate it using more force than
usual.
QIf “Hybrid system overheated Output
power reduced” is displayed
This message may be displayed when driv-
ing under severe operating conditions. (For
example, when driving up a long steep hill.)
Handling method:  P.396
QIf “Traction Battery Needs to be Pro-
tected Refrain From the Use of N Posi-
tion” is displayed
This message may be displayed when the
shift lever is in N.
As the hybrid battery (traction battery) can
not be charged when the shift lever is in N,
shift the shift lever to P when the vehicle is
stopped.
QIf “Traction Battery Needs to be Pro-
tected Shift into P to Restart” is dis-
played
This message is displayed when the hybrid
battery (traction battery) charge has
become extremely low because the shift
lever has been left in N for a certain amount
of time.
When operating the vehicle, shift to P and
restart the hybrid system.
QIf “Shift to P Before Exiting Vehicle” is
displayed
Message is displayed when the driver’s
door is opened without turning the power
Comes onDoes not sound
Indicates a condition, such as malfunction of electri-
cal components, their cond ition, or indicates the
need for maintenance
FlashesDoes not sound
Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly
Warning buzzer*Warning

3787-2. Steps to take in an emergency
ment” for the maintenance interval
applicable to your vehicle.
QIf “Maintenance Required Visit Your
Dealer” is displayed
Indicates that all maintenance is required to
correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message has been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. ( P.314)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
QIf “Oil Maintenance Required Soon” is
displayed
Indicates that the engine oil should be
scheduled to be changed.
Check the engine oil an d change it if neces-
sary. After changing the engine oil, make
sure to reset the message. ( P.314)
QIf “Oil Maintenance Required” is dis-
played
Indicates that the engine oil should be
changed.
Check and change the engine oil, and oil fil-
ter by your Lexus dealer. After changing
the engine oil, make sure to reset the mes-
sage. ( P.325)
QIf a message that indicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the multi-
information display is malfunctioning. Have
the vehicle inspected by your Lexus dealer
immediately.
QIf a message that indicates the need for
referring to Owner’s Manual is dis-
played
OIf any of the following messages are
shown on the multi-information display,
follow the instructions.
• “Engine Coolant Temp High” ( P.396)
OIf any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Access System with Elec. Key Malfunc-
tion”
• “Hybrid system malfunction”
•“Check Engine”
• “Hybrid battery system malfunction”
• “Accelerator system malfunction”
OIf any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Immediately
stop the vehicle and contact your Lexus
dealer.
•“Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
OIf any of the following messages are
shown on the multi-information display,
the vehicle may have run out of fuel. Stop
the vehicle in a safe place and, if the fuel
level is low, refuel the vehicle. ( P.62)
• “Hybrid system stopped”
• “Engine stopped”
OIf “Low Auxiliary Battery” is shown
• When the display goes off after several
seconds
*:
Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
• When the display does not go off:
Start up the hybrid system using the proce-
dures for “If the 12-volt battery is dis-
charged” ( P.391).
*: Displays for about 6 seconds
OIf “Maintenance required for Traction
battery cooling parts” is shown, the filter
may be clogged, the air intake vent may
be blocked, or there may be a gap in the
duct. Therefore, perform the following
correction procedure.
• If the air intake vent and filter of the
hybrid battery (traction battery) are dirty,
perform the procedure on P.343 to
clean them.
• If the warning message is shown when the air intake vent and filter of the hybrid

3857-2. Steps to take in an emergency
7
When trouble arises
76 ft•lbf (103 N•m, 10.5 kgf•m)
5Stow the flat tire, tire jack and all
tools.
QThe compact spare tire
OThe compact spare tire is identified by
the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily,
and only in an emergency.
OMake sure to check the tire inflation
pressure of the compact spare tire.
( P.407)
QAfter completing the tire change
The tire pressure warning system must be
reset. ( P.334)
QWhen using the compact spare tire
As the compact spare tire is not equipped
with a tire pressure warning valve and
transmitter, low inflation pressure of the
spare tire will not be indicated by the tire
pressure warning system. Also, if you
replace the compact spare tire after the tire
pressure warning light comes on, the light
remains on.
QWhen the compact spare tire is
attached
The vehicle becomes lower when driving
with the compact spare tire compared to
when driving with standard tires.
QIf you have a flat front tire on a road cov-
ered with snow or ice (vehicles with 17-
inch tires)
Install the compact spare tire on one of the
rear wheels of the vehicle. Perform the fol-
lowing steps and fit tire chains to the front
tires: 1
Replace a rear tire with the compact
spare tire.
2 Replace the flat front tire with the tire
removed from the rear of the vehicle.
3 Fit tire chains to the front tires.
WARNING
QWhen using the compact spare tire
ORemember that the compact spare tire
provided is specifically designed for
use with your vehicle. Do not use your
compact spare tire on another vehicle.
ODo not use more than one compact
spare tire simultaneously.
OReplace the compact spare tire with a
standard tire as soon as possible.
OAvoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
QWhen the compact spare tire is
attached
The vehicle speed may not be correctly
detected, and the following systems may
not operate correctly:
• ABS & Brake assist
•VSC
•TRAC
• Dynamic radar cruise control with full- speed range
• PCS (Pre-Collision System)
•EPS
• Adaptive Variable Suspension system (if equipped)
• LTA (Lane Tracing Assist)
• Panoramic view monitor (if equipped)
• Lexus parking assist monitor (if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• BSM (Blind Spot Monitor)
• AHB (Automatic High Beam)

3987-2. Steps to take in an emergency
as soon as possible.
6After stopping the hybrid system
and waiting for 5 minutes or more,
start the hybrid system again and
check if “Hybrid system over-
heated Output power reduced” is
shown on the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and contact your
Lexus dealer.
If the message is not displayed:
The hybrid system temperature has
dropped and the vehicle may be driven
normally.
However, if the message appears again
frequently, contact your Lexus dealer.
WARNING
QWhen inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
OIf steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
OAfter the hybrid system has been
turned off, check that the “READY”
indicator are off.
When the hybrid system is operating,
the gasoline engine may automatically
start, or the cooling fan may suddenly
operate even if the gasoline engine
stops. Do not touch or approach rotat-
ing parts such as the fan, which may
lead to fingers or clothing (especially a
tie, a scarf or a muffler) getting caught,
resulting in serious injury.
ODo not loosen the coolant inlet cap or
coolant reservoir caps while the hybrid
system and radiator are hot.
High temperature steam or coolant
could spray out.
NOTICE
QWhen adding engine/power control
unit coolant
Add coolant slowly after the hybrid sys-
tem has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too
quickly can cause damage to the hybrid
system.
QTo prevent damage to the cooling
system
Observe the following precautions:
OAvoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
ODo not use any coolant additive.

4048-1. Specifications
Except for Canada
For Canada
QOil 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.
QEngine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor
Oil” or equivalent to satisfy the follow-
ing grade and viscosity.
Oil grade: ILSAC GF-6B 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.
Hybrid battery (traction battery)
TypeLithium-ion battery
Voltage3.7 V/cell
Capacity4.0 Ah
Quantity70 cells
Nominal voltage259 V
TypeNickel-metal hydride battery
Voltage7.2 V/module
Capacity6.5 Ah (3HR)
Quantity34 modules
Nominal 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.)

454Alphabetical index
ACCESSORY mode ................................ 151
Compartment ............................................. 323
Hood.................................................................. 321
How to start the hybrid system ........... 148
Identification number ...............................403
If the hybrid system will not start ........386
If your vehicle has to be stopped in an emergency ............................................... 358
Ignition switch (power switch) ............. 148
Overheating .................................................396
Power switch ................................................ 148
Tachometer ............................................ 76, 80
Engine coolant .............................................. 325 Capacity .........................................................405
Checking ....................................................... 325
Preparing and checking before winter.........................................................................260
Engine coolant temperature gauge76, 80
Engine oil ........................................................ 323 Capacity .........................................................404
Checking ....................................................... 323
Preparing and checking before winter.........................................................................260
Warning light ...............................................365
Engine oil maintenance data .................. 325
EPS (Electric Power Steering) .............. 253 Function .......................................................... 253
Warning light ...............................................366
EV drive mode................................................153
Event data recorder (EDR) ........................... 8
EV indicator ...................................................... 60
F
Flat tire ............................................................. 379 Tire pressure warning system ............. 333
Floor mats ...........................................................22
Fluid Brake................................................................406
Hybrid transmission .................................406
Washer ........................................................... 327
Footwell light ................................................. 282
Front passenger occupant classification system ...............................................................37
Front seats ........................................................120 Adjustment ..................................................... 120
Cleaning ............................................................ 311
Correct driving posture ............................ 23
Driving position memory .......................... 121
Head restraints..............................................124
Memory recall function.............................123
Power easy access system ...................... 121
Seat heaters ..................................................278
Seat position memory ................................ 121
Seat ventilators ............................................278
Front side marker light ................................163 Light switch .................................................... 163
Front side marker lights Replacing light bulbs................... 352, 353
Wattage ......................................................... 409
Front turn signal lights ................................ 158 Replacing light bulbs................... 352, 353
Turn signal lever .......................................... 158
Wattage ......................................................... 409
Fuel ...................................................................... 174 Capacity ........................................................ 403
Fuel gauge...............................................76, 80
Information ..................................................... 410
Refueling...........................................................174
Type ................................................................. 403
Warning light ...............................................367
Fuel consumption Average fuel economy .............................. 87
Current fuel consumption ........................ 87
Fuel filler door ................................................. 174 If the fuel filler door cannot be opened......................................................................... 388
Refueling...........................................................174
Fuel gauge ................................................. 76, 80
Fuses ................................................................. 349
G
Garage door opener ................................. 298
Gauges ....................................................... 76, 80
Glove box ....................................................... 286

462Alphabetical index
Trunk grip ..........................................................112
Trunk light..........................................................112
Trunk opener main switch ........................114
Trunk opener switch ................................... 110
Trunk storage extension ........................ 297
Wireless remote control............................. 111
Trunk light .......................................................... 112
Turn signal lights ........................................... 158 Replacing light bulbs....................352, 353
Turn signal lever .......................................... 158
Wattage..........................................................409
U
USB charging ports.................................... 290
V
Vanity lights.................................................... 289
Vanity mirrors ............................................... 289
Vehicle data recordings ..................................7
Vehicle identification number ................ 402
Vehicle Stability Control (VSC) ........... 253
Ventilators (seat ventilators)................... 278
VSC (Vehicle Stability Control) ........... 253
W
Warning buzzersABS ..................................................................366
Airbags ...........................................................365
Approach warning......................................210
Brake hold....................................................... 371
Brake Override System .........................366
Brake system ............................................... 364
Charging system .......................................365
Downshifting ....................................... 157, 158
Drive-Start Control ..................................366
Electric power steering ..........................366
Engine .............................................................365
High coolant temperature .................... 364
Hybrid system overheat........................... 371
Hybrid system .............................................365 Intuitive parking assist ................. 229, 368
Low engine oil pressure........................ 365
LTA (Lane Tracing Assist) ......... 192, 368
Open door..................................................... 107
Open hood .................................................... 107
Open trunk .................................................... 107
Open window ...............................................132
PKSA (Parking Support Alert) ........... 222
PKSB (Parking Support Brake) ........ 369
Pre-collision braking ................................. 182
RCD (Rear Camera Detection) ....... 369
RCTA (Rear Cross Traffic Alert) ..... 369
Seat belt ..........................................................367
Warning label .................................................. 62
Warning lights............................................... 364 ABS.................................................................. 366
Brake hold operated indicator .............371
Brake system................................................364
Charging system....................................... 365
Electric power steering.......................... 366
High coolant temperature.....................364
Hybrid system overheat ...........................371
Inappropriate pedal operation........... 366
Intuitive parking assist OFF indicator......................................................................... 368
Low engine oil pressure........................ 365
Low fuel level ...............................................367
LTA indicator .............................................. 368
Malfunction indicator lamp .................. 365
Master warning light...................................371
Parking brake indicator ..........................370
PCS...................................................................370
PKSB OFF indicator ............................... 369
RCD OFF indicator................................. 369
RCTA OFF indicator .............................. 369
Seat belt reminder light...........................367
Slip indicator.................................................370
SRS ................................................................... 365
Tire pressure ............................................... 368
Warning messages ..................................... 374
Washer ..............................................................169 Checking ....................................................... 327