2021 LEXUS ES300h key battery

ES300h_OM_OM06209U_(U)
1
2
3
4
5
6
7
8
9
Pictorial indexSearch by illustration
For safety and
securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before drivingOpening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats, power windows)
DrivingOperations and advice which are necessary for driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance and
careCaring for your vehicle and maintenance procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: Battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

4TABLE OF CONTENTS
6-3. Do-it-yourself maintenanceDo-it-yourself service precautions............................................................ 317
Hood................................................... 319
Positioning a floor jack................ 319
Engine compartment................... 321
12-volt battery................................ 326
Tires ................................................... 329
Tire inflation pressure ................. 339
Wheels............................................... 341
Air conditioning filter..................342
Cleaning the hybrid battery (trac- tion battery) air intake vent and fil-
ter..................................................... 344
Electronic key battery ................ 347
Checking and replacing fuses 349
Headlight aim.................................. 351
Light bulbs ....................................... 352
7-1. Essential information Emergency flashers..................... 358
If your vehicle has to be stopped in an emergency ............................. 358
If the vehicle is trapped in rising water............................................... 359
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 361
If you think something is wrong ........................................................... 364
If a warning light turns on or a warn- ing buzzer sounds ..................... 365
If a warning message is displayed ........................................................... 375
If you have a flat tire..................... 379If the hybrid syst
em will not start
.......................................................... 386
If you lose your keys.................... 388
If the fuel filler door cannot be opened .......................................... 388
If the electronic key does not oper- ate properly ................................. 389
If the 12-volt battery is discharged ........................................................... 391
If your vehicle overheats ........... 396
If the vehicle becomes stuck ... 399
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 402
Fuel information............................ 409
Tire information ............................... 411
8-2. Customization Customizable features .............. 420
8-3. Items to initialize Items to initialize ............................. 431
9-1. For owners Reporting safety defects for U.S. owners ........................................... 434
Seat belt instructions for Canadian owners (in French) ................... 434
SRS airbag instructions for Cana- dian owners (in French) ......... 436
Headlight aim instructions for Canadian owners (in French) 44
2
7When trouble arises
8Vehicle specifications
9For owners

721-5. Theft deterrent system
●For Canada: The doors are unlocked
using the mechanical key.
●The trunk is unlocked using the mechani-
cal key.
●A person inside the vehicle opens a door,
the trunk or hood, or unlocks the vehicle
using a door lock switch.
●The 12-volt battery is recharged or
replaced when the vehicle is locked.
(  P.393)
■Alarm-operated door lock
In the following cases, depending on the sit-
uation, the door may automatically lock to
prevent improper entry into the vehicle:
●When a person remaining in the vehicle unlocks the door and the alarm is acti-
vated.
●While the alarm is activated, a person
remaining in the vehicle unlocks the door.
●When recharging or
replacing the 12-
volt battery
NOTICE
■To ensure the system operates cor-
rectly
Do not modify or remove the system. If
modified or removed, the proper opera-
tion of the system cannot be guaranteed.

983-1. Key information
3-1.Key information
The following keys are provided with
the vehicle.
Electronic keys
• Operating the smart access system with push-button start ( P.112)
• Operating the wireless remote control function
Mechanical keys
Key number plate
■When riding in an aircraft
When bringing an elec tronic key onto an
aircraft, make sure you do not press any
buttons on the electronic key while inside
the aircraft cabin. If you are carrying an
electronic key in your bag etc., ensure that
the buttons are not likely to be pressed
accidentally. Pressing a button may cause
the electronic key to emit radio waves that
could interfere with the operation of the air-
craft.
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will
sound in the cabin when the hybrid sys-
tem is stopped.
●Battery-saving mode can reduce the
power consumption of electronic keys
that are not used for long periods of time.
(  P.113)
●As the electronic key always receives
radio waves, the battery will become
depleted even if the electronic key is not
used. The following symptoms indicate
that the electronic key battery may be
depleted. Replace the battery when nec-
essary. ( P.347)
• The smart access system with push-but- ton start or the wireless remote control
does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself
(  P.347). However, as there is a danger
that the electronic key may be damaged, it
is recommended that replacement be car-
ried out by your Lexus dealer.
●To avoid serious dete rioration, do not
leave the electronic key within 3 ft. (1 m)
of the following electrical appliances that
produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless
phones
•Table lamps
• Induction cookers
■Replacing the battery
 P.347
■Confirmation of the registered key
number
The number of keys already registered to
the vehicle can be confirmed. Ask your
Lexus dealer for details.
■If “A New Key has been Registered
Contact Your Dealer for Details” is
shown on the multi-information display
This message will be displayed each time
the driver’s door is opened when the doors
are unlocked from the outside for approxi-
mately 10 days after a new electronic key
has been registered.
If this message is disp layed but you have not
had a new electronic key registered, ask
your Lexus dealer to check if an unknown
electronic key (other than those in your
Keys
Key types
A
B
C

1003-1. Key information
To take out the mechanical key, push
the release button and take the key out.
The mechanical key can only be inserted in
one direction, as the key only has grooves
on one side. If the key cannot be inserted in
a lock cylinder, turn it over and re-attempt
to insert it.
After using the mechanical key, store it in
the electronic key. Carry the mechanical
key together with the electronic key. If the
electronic key battery is depleted or the
entry function does not operate properly,
you will need the mechanical key.
( P.389)
■When required to leave the vehicle’s
key with a parking attendant
Turn the trunk opener main switch off
(  P.111), lock the glove box ( P.281) and
armrest door ( P.294) as circumstances
demand.
Remove the mechanical key for your own
use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
 P.388
Using the mechanical key

1023-2. Opening, closing and locking the doors and trunk
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.71)
■Impact 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.
■Operation signals
A buzzer sounds and the emergency flash-
ers flash to indicate that the doors have
been locked/unlocked. (Locked: once;
Unlocked: twice)
Windows and moon roof: A buzzer sounds
to indicate that the windows and moon roof
are opening.
■Security 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.)
■When 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.
■Open door warning buzzer
If an attempt to lock the doors is made when
a door is not fully closed, a buzzer sounds
continuously for 5 seconds. Fully close the
door to stop the buzzer, and lock the vehi-
cle once more.
■Setting the alarm
Locking the doors will set the alarm system.
(  P.71)
■Conditions affecting the operation of
the smart access system with push-but-
ton start or wireless remote control
 P.114
■If 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)
■If the 12-volt batte ry is discharged
The doors cannot be locked and unlocked
using the smart access system with push-
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.

1103-2. Opening, closing and locking the doors and trunk
■Using the mechanical key
The trunk can be also opened using the
mechanical key. ( P.389)
If the trunk is unlocked using the mechani-
cal key, the power trunk lid and trunk easy
closer will not be operational. To return
them to an operational state, fully close the
trunk lid by hand.
■If the smart access system with push-
button start or the wireless remote con-
trol does not operate properly
Use the mechanical key to unlock the trunk.
(  P.389)
Replace the key battery with a new one if it
is depleted. ( P.347)
■Hands Free Power Trunk Lid operating
conditions (vehicle s with power trunk
lid)
●When the Hands Free Power Trunk Lid
(kick sensor) operation setting is turned
on and the power switch is turned off
●When an electronic key is carried within
the operation range
■Situations in which the Hands Free
Power Trunk Lid may not operate prop-
erly (vehicles with power trunk lid)
In the following situations, the Hands Free
Power Trunk Lid may not operate properly:
●When a foot remain s under the rear
bumper
●If the rear bumper is strongly hit with a
foot or is touched for a while
If the rear bumper has been touched for a
while, wait for a short time before
attempting to operate the Hands Free
Power Trunk Lid again.
●When operated while a person is too
close to the rear bumper
●When an external radio wave source interferes with the communication
between the electronic key and the vehi-
cle (
P.114)
●When the vehicle is parked near an elec-
trical noise source which affects the sen-
sitivity of the Hands Free Power Trunk
Lid, such as a pay parking spot, gas sta-
tion, electrically heated road, or fluores-
cent light
●When the vehicle is near a TV tower,
electric power plant, radio station, large
display, airport or ot her facility that gen-
erates strong radio waves or electrical
noise
●When a large amount of water is applied
to the rear bumper, such as when the
vehicle is being washed or in heavy rain
●When mud, snow, ice, etc. is attached to
the rear bumper
●When the vehicle has been parked for a
while near objects that may move and
contact the rear bumper, such as plants
●When an accessory is installed to the rear
bumper
If an accessory has been installed, turn
the Hands Free Power Trunk Lid (kick
sensor) operation setting off.
■Preventing unintentional operation of
the Hands Free Power Trunk Lid (vehi-
cles with power trunk lid)
When an electronic key is in the operation
range, the Hands Free Power Trunk Lid
may operate unintentionally, so be careful
in the following situations.
●When a large amount of water is applied
to the rear bumper, such as when the
vehicle is being washed or in heavy rain
●When dirt is wiped off the rear bumper
●When a small animal or small object, such
as a ball, moves under the rear bumper
●When an object is moved from under the
rear bumper
●If someone is swinging their legs while sit-
ting on the rear bumper
●If the legs or another part of someone’s
body contacts the rear bumper while
passing by the vehicle
●When the vehicle is parked near an elec-

1133-2. Opening, closing and locking the doors and trunk
3
Before driving
●When an exterior alarm sounds once for
5 seconds
●When an interior alarm sounds continu-
ously
■If “Key Detected in Vehicle” is shown on
the multi-information display
An attempt was made to lock the doors
using the smart access system with push-
button start while the electronic key was still
inside the vehicle. Retrieve the electronic
key from the vehicle and lock the doors
again.
■Battery-saving function
The battery-saving function will be acti-
vated in order to prevent the electronic key
battery and the 12-volt battery from being
discharged while the vehicle is not in opera-
tion for a long time.
●In the following situations, the smart
access system with pu sh-button start may
take some time to unlock the doors.
• The electronic key has been left within
approximately 6 ft. (2 m) of the outside of
the vehicle for 10 minutes or longer.
• The smart access system with push-but-
ton start has not been used for 5 days or
longer.
●If the smart access system with push-but-
ton start has not been used for 14 days or
longer, the doors cann ot be unlocked at
any doors except the dr iver’s door. In this
case, take hold of the driver’s door han-
dle, or use the wireless remote control or
mechanical key, to unlock the doors.
■Turning an electronic key to battery-
saving mode
●When battery-saving mode is set, battery
depletion is minimized by stopping the
electronic key from receiving radio
waves.
Press twice while pressing and
holding . Confirm that the elec-
tronic key indicator flashes 4 times.
While the battery-saving mode is set, the
smart access system with push-button
start cannot be used. To cancel the func-
tion, press any of the electronic key but-
tons.
●Electronic keys that will not be used for
long periods of time can be set to the bat-
tery-saving mode in advance.
SituationCorrection proce-
dure
The trunk was
closed while the
electronic key was
still inside the trunk
and all the doors
were locked.
Retrieve the elec-
tronic key from the
trunk and close the
trunk lid.
An attempt was
made to lock the
vehicle while a door
was open.Close all of the
doors and lock the
doors again.
SituationCorrection proce-dure
The power switch
was turned to
ACCESSORY
mode while the
driver’s door was
open (or the driver’s
door was opened
while the power
switch was in
ACCESSORY
mode).
Turn the power
switch off and close
the driver’s door.
The power switch
was turned off while
the driver’s door
was open.
Close the driver’s
door.