2022 LEXUS ES300h change key battery

1053-2. Opening, closing and locking the doors and trunk
3
Before driving
To prevent unintended triggering of the
alarm, unlock the doors using the wireless
remote control and open and close a door
once after the settings have been changed.
(If a door is not opened within 60 seconds
after is pressed, the doors will be
locked again and the alarm will automati-
cally be set.)
In a case that the alarm is triggered, imme-
diately stop the alarm. (P.68)
QImpact detection door lock release sys-
tem
In the event that the vehicle is subject to a
strong impact, all the doors are unlocked.
Depending on the force of the impact or the
type of accident, however, the system may
not operate.
QOperation signals
A buzzer sounds and the emergency flash-
ers flash to indicate that the doors have
been locked/unlocked. (Locked: once;
Unlocked: twice)
A buzzer sounds to indicate that the win-
dows and moon roof are opening.
QSecurity feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked,
the security feature automatically locks the
vehicle again. (However, depending on the
location of the electronic key, the key may
be detected as being in the vehicle. In this
case, vehicle may be unlocked.)
QWhen the doors cannot be locked by
the lock sensor on the upper part of the
door handle
When the doors cannot be locked even if
the lock sensor on the surface of the door
handle is touched by a finger, touch the lock
sensor with the palm.
If you are wearing gloves, remove them.
QDoor lock buzzer
If an attempt to lock the doors using the
smart access system with push-button start
is made when a door other than the door
you are locking is open, a buzzer sounds
continuously for 5 seconds. Fully close all
the doors, and lock the vehicle once more.
QSetting the alarm
Locking the doors will set the alarm system.
(  P.68)
QConditions affectin g the operation of
the smart access system with push-but-
ton start or wirele ss remote control
 P.117
QIf the smart access system with push-
button start or the wireless remote con-
trol does not operate properly
Use the mechanical key to lock and unlock
the doors. ( P.389)
Replace the key battery with a new one if it
is depleted. ( P.347)
QIf the 12-volt battery is discharged
The doors cannot be locked and unlocked
using the smart access system with push-
button start or wireless remote control.
Multi-information display/BeepUnlocking function
Exterior: Beeps 3 times
Interior: Pings once
Holding the driver’s
door handle unlocks
only the driver’s door.
Holding a passenger’s
door handle unlocks all
the doors.
Exterior: Beeps twice
Interior: Pings onceHolding a door handle
unlocks all the doors.

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)

1484-2. Driving procedures
4-2 . D riving p roce dures
1Press the parking brake switch to
check that the parking brake is set.
( P.159)
Parking brake indicator will come on.
2 Check that the shift lever is in P.
3 Firmly depress the brake pedal.
and a message will be displayed on
the multi-information display.
If it is not displayed, the hybrid system can-
not be started.
4 Press the power switch shortly and
firmly.
When operating the power switch, one
short, firm press is enough. It is not neces-
sary to press and hold the switch.
If the “READY” indicator turns on, the
hybrid system will operate normally.
Continue depressing the brake pedal until
the “READY” indicator is illuminated.
The hybrid system can be started from any
power switch mode.
5Check that the “READY” indicator
is illuminated.
The vehicle will not move when the
“READY” indicator is off.
QPower switch illumination
According to the situation, the power
switch illumination operates as follows.
OWhen a door is opened, or the power
switch mode is changed from ACCES-
SORY or ON mode to off, the power
switch illumination slowly blinks.
OWhen depressing the brake pedal with
carrying the electronic key on your per-
son, the power switch illumination rapidly
blinks.
OWhen the power switch is in ACCES-
SORY or ON mode, the power switch
illumination illuminates.
QIf the hybrid system does not start
OThe immobilizer system may not have
been deactivated. ( P.67)
Contact your Lexus dealer.
OIf a message related to start-up is shown
on the multi-information display, read the
message and follow the instructions.
OIf the door is unlocked with the mechani-
cal key, the hybrid system cannot be
started using the smart access system
with push-button start. Refer to P.390 to
start the hybrid system. However, if the
electronic key is carried inside the vehi-
cle and the doors are locked ( P.106),
the hybrid system can be started.
QWhen the ambient temperature is low,
such as during winter driving conditions
(for vehicles sold in except Canada)
OWhen starting the hybrid system, the
flashing time of the “READY” indicator
may be long. Leave the vehicle as it is
until the “READY” indicator is steady on,
as steady means the vehicle is able to
move.
OWhen the hybrid battery (traction bat-
tery) is extremely cold (below approxi-
mately -22°F [-30°C]) under the
influence of the outside temperature, it
may not be possible to start the hybrid
Power (ignition) switch
Performing the following opera-
tions when carrying the electronic
key on your person starts the hybrid
system or changes power switch
modes.
Starting the hybrid system

1494-2. Driving procedures
4
Driving
system. In this case, try to start the hybrid
system again after the temperature of the
hybrid battery increases due to the out-
side temperature increase etc.
QSounds and vibrations specific to a
hybrid vehicle
 P.60
QIf the 12-volt battery is discharged
The hybrid system cannot be started using
the smart access system with push-button
start. Refer to P.391 to restart the hybrid
system.
QElectronic key battery depletion
 P.100
QConditions affecting operation
 P.117
QNotes for the entry function
 P.117
QSteering lock function
OAfter turning the power switch off and
opening and closing the doors, the steer-
ing wheel will be locked due to the steer-
ing lock function. Operating the power
switch again automatically cancels the
steering lock.
OWhen the steering lock cannot be
released, “Push Power Switch while
Turning Steering Wheel in Either Direc-
tion” will be displayed on the multi-infor-
mation display.
Check that the shift lever is set in P. Press
the power switch shortly and firmly while
turning the steering wh eel left and right.
OTo prevent the steering lock motor from
overheating, the motor may be sus-
pended if the hybrid system is turned on
and off repeatedly in a short period of
time. In this case, refrain from operating
the power switch. After about 10 sec- onds, the steering lock motor will resume
functioning.
QIf there is a malfunction in the smart
access system with push-button start
If “Access System with Elec. Key Malfunc-
tion See Owner’s Manual” is displayed on
the multi-information display, the system
may be malfunctioning. Have the vehicle
inspected by your Lexus dealer immedi-
ately.
QIf the “READY” indicator does not
come on
In the event that the “READY” indicator
does not come on even after performing
the proper procedures for starting the vehi-
cle, contact your Lexus dealer immediately.
QIf the hybrid system is malfunctioning
 P.65
QElectronic key battery
 P.347
QOperation of the power switch
OIf the switch is not pressed shortly and
firmly, the power switch mode may not
change or the hybrid system may not
start.
OIf attempting to restart the hybrid system
immediately after turning the power
switch off, the hybrid system may not start
in some cases. After turning the power
switch off, please wait a few seconds
before restarting the hybrid system.
QCustomization
If the smart access system with push-button
start has been deactivated in a customized
setting, refer to P.421.
WARNING
QWhen starting the hybrid system
Always start the hybrid system while sit-
ting in the driver’s seat. Do not depress
the accelerator pedal while starting the
hybrid system under any circumstances.
Doing so may cause an accident result-
ing in death or serious injury.

1644-3. Operating the lights and wipers
QAutomatic light off system
OWhen the headlights come on: The head-
lights and tail lights turn off 30 seconds
after the driver’s door is opened and
closed if the power switch is turned to
ACCESSORY mode or turned off. (The
lights turn off immediately if on
the key is pressed after all the doors are
locked.)
OWhen only the tail lights come on: The tail
lights turn off automatically if the power
switch is turned to ACCESSORY mode
or turned off and the driver’s door is
opened.
For the U.S.A.: To turn the lights on again,
turn the power switch to ON mode, or turn
the light switch off once and then back to
or .
For Canada: To turn the lights on again, turn
the power switch to ON mode, or turn the
light switch to position once and then
back to or .
QLight reminder buzzer
A buzzer sounds when the power switch is
turned off or turned to ACCESSORY
mode and the driver’s door is opened while
the lights are turned on.
QAutomatic headlight leveling system (if
equipped)
The level of the headlights is automatically
adjusted according to the number of pas-
sengers and the loading condition of the
vehicle to ensure that the headlights do not
interfere with other road users.
QWindshield wiper linked headlight illu-
mination
When driving during daytime with the
headlight switch turned to , if the wind-
shield wipers are used, the headlights will
turn on automatically after several seconds
to help enhance the visibility of your vehicle.
Q12-volt battery-saving function
In order to prevent the 12-volt battery of the
vehicle from discharging, if the headlights
and/or tail lights are on when the power
switch is turned off the 12-volt battery sav-
ing function will operate and automatically
turn off all the lights after approximately 20
minutes.
When the power switch is turned to ON
mode, the 12-volt battery-saving function
will be disabled.
When any of the following are performed,
the 12-volt battery-saving function is can-
celed once and then reactivated. All the
lights will turn off automatically 20 minutes
after the 12-volt battery-saving function has
been reactivated:
OWhen the headlight switch is operated
OWhen a door is opened or closed
QWelcome light illumination control
The parking lights, tail lights and license
plate lights automatically turn on at night
when the doors are unlocked using the
entry function or wireless remote control if
the light switch is in the position.
QIf “Headlight System Malfunction Visit
Your Dealer” is displayed
 P.377
QCustomization
Settings (e.g. light sensor sensitivity) can be
changed.
(Customizable features:  P.421)

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

3917-2. Steps to take in an emergency
7
When trouble arises
QAlarm (for Canada)
Using the mechanical key to lock the doors
will not set the alarm system.
If a door is unlocked using the mechanical
key when the alarm system is set, the alarm
may be triggered.
QChanging power switch modes
Release the brake pedal and press the
power switch in step 3 above.
The hybrid system does not start and modes
will be changed each time the switch is
pressed. ( P.151)
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.69)
2 Open the hood ( P.321) and
open the fuse box cover.
If the 12-volt battery is dis-
charged
The following procedures may be
used to start the hybrid system if the
12-volt battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the hybrid system

Alphabetical index453
RCTA ..............................................................230
Warning message..................................... 374
Distance until next engine oil change .. 78, 84
Do-it-yourself maintenance ......................315
Door courtesy lights ................................... 282
Door lock Doors................................................................ 104
Smart access system with push-button start ................................................................... 115
Wireless remote control..........................102
Doors ................................................................. 104 Automatic door locking and unlocking system ............................................................107
Door glasses ................................................... 131
Door lock........................................................ 104
Open door warning buzzer ..................107
Outside rear view mirrors ......................128
Rear door child-protectors ....................107
Drive distance .................................................. 87
Drive info 1/Drive info 2 .............................. 87
Driver’s seat position memory .................. 121 Driving position memory...........................121
Memory recall function ............................ 123
Drive-Start Control (DSC) Sudden start restraint control................143
Driving............................................................... 138 Break-in tips ...................................................139
Correct driving posture .............................23
Driving Mode Select switch................... 219
Hybrid vehicle driving tips ....................258
Procedures .................................................... 138
Winter drive tips.........................................260
Driving information display ........................ 87
Driving Mode Select switch......................219
Driving range ................................................... 87
Driving support system information display ............................................................................. 89
DSC (Drive-Start Control) Sudden start restraint control................143
Dynamic radar cruise control with full- speed range ................................................ 204 Warning message .......................................213
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 253
Eco drive mode ..............................................219
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 87
Electric motor (traction motor) ................ 59
Electric Power Steering (EPS) Function ..........................................................253
Warning light .............................................. 366
Electronically Controlled Brake System (ECB) ............................................................ 253
Electronic key ................................................ 100 Battery-saving function.............................. 117
If the electronic key does not operate properly ...................................................... 389
Replacing the battery............................... 347
Emergency, in case of If a warning buzzer sounds...................364
If a warning light turns on.......................364
If a warning message is displayed ..... 374
If the 12-volt battery is discharged ..... 391
If the electronic key does not operate properly ...................................................... 389
If the fuel filler door cannot be opened ......................................................................... 388
If the hybrid system will not start ....... 386
If the vehicle is submerged or water on the road is rising ..................................... 359
If you have a flat tire .................................. 379
If you lose your keys ................................ 388
If you think something is wrong.......... 362
If your vehicle becomes stuck ............ 399
If your vehicle has to be stopped in an emergency................................................ 358
If your vehicle needs to be towed ...... 361
If your vehicle overheats ....................... 396
Emergency flashers ....................................358
Energy monitor ............................................... 95
Engine