battery LEXUS RX450h 2021 User Guide

862-1. Instrument cluster
being used very often.
The gasoline engine will automatically stop
and restart under various conditions.Eco area
Shows that the vehicle is being driven in an
Eco-friendly manner.
Power area
Shows that an Eco-friendly driving range is
being exceeded (durin g full power driving
etc.)
●Depending on the selected driving mode,
the Hybrid System Indicator or tachome-
ter will be displayed. The Hybrid System
Indicator or tachometer can be set to
always be displayed on of the
multi-information display. ( P.92)
●The Hybrid System Indicator is displayed
in the following situations:
• When the tachometer setting is set to
change according to the driving mode
and a driving mode other than sport
mode is selected
• When the tachometer setting is set to always display the Hybrid System Indica-
tor
●By keeping the indicator needle (except
F SPORT models) or bar display (F
SPORT models) within the Eco area,
more Eco-friendly driving can be
achieved.
●Charge area indicates regeneration* sta-
tus. Regenerated energy will be used to
charge the hybrid battery (traction bat-
tery).
*: When used in this manual, regeneration
refers to the conversion of energy cre-
ated by the movement of the vehicle into
electrical energy.
■Tachometer
Hybrid System Indicator switches to the
tachometer when driving mode is in sport
mode.
The settings of the tachometer display can
be changed on the multi-information dis-
play.
■Engine speed
On hybrid vehicles, engine speed is pre-
cisely controlled in order to help improve
fuel efficiency and reduce exhaust emis-
sions etc.
There are times when the engine speed that
is displayed may differ even when vehicle
operation and driving conditions are the
same.
■Outside temperature display
●In the following situations, the correct
outside temperature may not be dis-
played, or the display may take longer
than normal to change:
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has
changed suddenly (at the entrance/exit of
a garage, tunnel, etc.)
●When “--” or “E” is displayed, the system
may be malfunctioning. Take your vehicle
to your Lexus dealer.
■Liquid crystal display
Small spots or light sp ots may appear on the
display. This phenomenon is characteristic
of liquid crystal disp lays, and there is no
problem continuing to use the display.
■Customization
The gauges and meters can be customized
on of the multi-information display.
(  P.92)
C
D
WARNING
■The information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the information display
monitor may respond slowly, and display
changes may be delayed.

912-1. Instrument cluster
2
Vehicle status information and indicators
*4: This distance is computed based on your average fuel consumption. As a
result, the actual distance that can be
driven may differ from that displayed.
■Energy monitor
 P.99
■AWD Control
Displays the driving force applied to
each wheel using segments.
The greater the number of segments
displayed, the greater the driving force
applied.
■G-force (if equipped)
Displays lateral G-forces on the vehi-
cle. Also displays, around the periph-
ery of the G-force display, the left and
right steering amount, accelerator
pedal input, and brake fluid pressure.
Acceleration G-force on the vehi-
cle
Current G-force value (analyzed
value of front/rear and left/right
G-forces)
Record of the maximum G-forces
Accelerator pedal input
Brake fluid pressure
Steering amount
This display is intended for use as a guide- line. Depending on fact
ors such as the road
surface condition, temperature and vehicle
speed, the display may not show the actual
condition of the vehicle.
 Resetting the record of maximum
G-forces
Press and hold of the meter control
switch to reset the record.
Peak hold function
If lateral G-forces of 0.5 G or greater are
generated, the G-forc e value display will
turn amber and be held for 2 seconds.
■Tire pressure
 P.382
■Units (if equipped)
The units of measure used can be
changed while driving.
Unlike the units sett ing performed on the
settings display, th e units setting per-
formed on the drive information display
can be changed while driving.
■Blank (No items)
Displays no drive information contents.
■G-force display (if equipped)
●The G-force values may not be zero even
when the vehicle is parked, such as when
it is parked on an incline.
●Depending on the vehicle usage condi-
tions, the brake fluid pressure display may
not reach its maximum reading even
though the brake pedal is fully depressed.
●If a 12-volt battery terminal is discon-
nected and reconnect ed, the steering
amount display may be disabled tempo-
rarily. After driving th e vehicle for a while,
the display will be enabled.
■Tire pressure
• It may take a few minutes to display the tire inflation pressu re after the power
A
B
C
D
E
F

932-1. Instrument cluster
2
Vehicle status information and indicators
be changed to automatically according to
the driving mode.
Needle (F SPORT models)
Select to set the tachometer needle color.
Rev indicator (F SPORT models)
( P.85)
• Select to enable/disable the Rev indica-
tor.
• Select to set the desired engine speed at which the Rev indicator will begin to be
displayed.
Selectable engine speed range:
2000 rpm to 6000 rpm
 Rev peak (F SPORT models)
( P.85)
Select to enable/dis able the Rev peak.
Default setting
Select to reset the meter display settings to
the default setting.
■Vehicle functions and settings that
can be changed
 P.480
■Background color of the indicator/shift
position display area (except F SPORT
models)
The background color of the indicator/shift
position display area is changed according
to the driving mode as follows ( P.281):
●Eco drive mode: Blue
●Sport mode: Red
■Suspension of the settings display
●Some settings cannot be changed while
driving. When changi ng settings, park
the vehicle in a safe place.
●If a warning message is displayed, opera-
tion of the settings display will be sus-
pended.
Displays suggestions to the driver in
the following situations. To select a
response to a displayed suggestion,
use the meter control switches.
■Suggestion to enable the power
back door
If the power back door system is dis-
abled (setting on set to off) and the
power back door switch on the instru-
ment panel is operated, a suggestion
message will be displayed asking if you
wish to enable the power back door
system.
To enable the power back door system,
select “Yes”.
After enabling the power back door sys-
tem, press the power back door switch
again to open or close the power back
door.
WARNING
■Cautions during setting up the dis-
play
As the hybrid system needs to be operat-
ing during setting up the display, ensure
that the vehicle is parked in a place with
adequate ventilation. In a closed area
such as a garage, ex haust gases includ-
ing harmful carbon monoxide (CO) may
collect and enter the vehicle. This may
lead to death or a serious health hazard.
NOTICE
■While setting up the display
To prevent 12-volt battery discharge,
ensure that the hybrid system is operat-
ing while setting up the display features.
Suggestion function

972-1. Instrument cluster
2
Vehicle status information and indicators
■Changing settings of the head-up
display
Select on the multi-information
display ( P.480) to change the fol-
lowing settings:
 Display brightness/position
Select to adjust the brightness and position
of the head-up display.
 Display content
Select to enable/dis able the following
items:
• Route guidance to destination (if equipped)
• Driving assist system status (if equipped)
• Compass (if equipped)
• Audio system operation status
 Hybrid System Indicator/Tachome-
ter
Select to display Hybrid System Indica-
tor/tachometer/no content.
Display angle
Select to adjust the angle of the head-up
display.
■Enabling/disabling of the head-up dis-
play
If the head-up display is disabled, it will
remain disabled when the power switch is
turned off then back to ON mode.
■Display brightness
The brightness of the head-up display can
be adjusted on of the multi-information
display. Also, it is automatically adjusted
according to the ambient brightness.
■Automatic adjustment of the head-up
display position (if equipped)
A desired head-up display position can be
entered to memory and recalled automati-
cally by the driving position memory sys-
tem. ( P.142)
■When the 12-volt battery is discon-
nected
The customize settings of the head-up dis-
play will be reset.
Displays the following multi-informa-
tion display linked icons:
: Master warning icon
Displayed when a warn ing message is dis-
WARNING
■Caution for changing settings of the
head-up display
As the hybrid system needs to be operat-
ing while changing th e settings of the
head-up display, ensure that the vehicle
is parked in a place with adequate venti-
lation. In a closed area such as a garage,
exhaust gases including harmful carbon
monoxide (CO) may collect and enter
the vehicle. This may lead to death or a
serious health hazard.
NOTICE
■When changing the settings of the
head-up display
To prevent 12-volt battery discharge,
ensure that the hybrid system is operat-
ing while the changing the settings of the
head-up display.
Information icon/Master warn-
ing icon

1012-1. Instrument cluster
2
Vehicle status information and indicators
These images are examples only, and may vary slightly from actual conditions.
■Hybrid battery (traction battery)
status
Center Display
Low
High
Multi-information displayLow
High
These images are examples only, and may
vary slightly from actual conditions.
When the vehicle is charging the hybrid battery (traction battery)
Center DisplayMulti-information display
When there is no energy flow
Center DisplayMulti-information display
A
B
A
B

1063-1. 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.125)
• Operating the wireless remote control function ( P.107)
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 acci-
dentally. Pressing a button may cause the
electronic key to em it 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.
●To reduce key battery depletion when the
electronic key is to not be used for long
periods of time, set the electronic key to
the battery-saving mode. ( P.126)
●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.
• 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.
●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.393
■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 one week 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
possession) has be en registered.
Keys
The keys
A
B
C

1083-1. Key information
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.447)
■When required to leave the vehicle’s
key with a parking attendant
Lock the glove box as circumstances
demand. ( P.326)
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.446
■If a wrong key is used
The key cylinder rotates freely, isolated
from the internal mechanism.

1103-2. Opening, closing and locking the doors
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.75)
■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
Doors:
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 or panoramic
moon roof:
A buzzer sounds.
■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.
■When the door cannot be locked by the
lock sensor on the surface of the door
handle
When the door cannot be locked even if the
lock sensor on the surface of the door han-
dle is touched by a finger, touch the lock
sensor with the palm.
When gloves are being worn, remove the
gloves.
■Door lock buzzer
If an attempt to lock the doors using the
smart key system is made when a door is
not fully closed, a buzzer will sound continu-
ously for 5 seconds. Fully close the door to
stop the buzzer, and lock the doors again.
■Setting the alarm
Locking the doors will set the alarm system.
(  P.75)
■Conditions affecting the operation of
the smart access system with push-but-
ton start or wireless remote control
 P.126
■If the smart access system with
push-button start or the wireless remote
control does not operate properly
Use the mechanical key to lock and unlock
the doors. ( P.447)
Replace the key battery with a new one if it
is depleted. ( P.393)
■If the 12-volt batte ry is discharged
The doors cannot be locked and unlocked
using the smart access system with
push-button start or wireless remote con-
trol. Lock or unlock the doors using the
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 any of the
passenger door
handles unlocks all
the doors.
Exterior: Beeps twice
Interior: Pings once
Holding a door han-
dle unlocks all the
doors.

1193-2. Opening, closing and locking the doors
3
Before driving
If the rear bumper has been touched for a
while, wait for a short time before
attempting to operate the Hands Free
Power Back Door again.
●When standing excessively close to the
rear bumper
●When an external radio wave source
interferes with the communication
between the electronic key and the vehi-
cle ( P.126)
●When the vehicle is parked near metal, or
an external radio wave or electrical noise
source which affects the sensitivity of the
Hands Free Power Back Door, such as a
pay parking spot, gas station, electrically
heated road, fluorescent light, or metal
plate
●When the vehicle is near a TV tower,
electric power plant, radio station, large
display, airport or other 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 Back Door (kick sen-
sor) operation setting off.
●RX450hL: When a ti re other than the
spare tire is stored in the spare tire stor-
age area
■Preventing unintentional operation of
the Hands Free Power Back Door (if
equipped)
When an electronic ke y is in the operation
detection area, the Ha nds Free Power Back
Door 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-
trical noise source which affects the sen-
sitivity of the Hands Free Power Back
Door, 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 the vehicle is parked in a place
where objects such as plants are near the
rear bumper
●If luggage, etc. is set near the rear
bumper
●If accessories or a vehicle cover is
installed/removed ne ar the rear bumper
●When the vehicle is being towed
To prevent unintentiona l operation, turn the
Hands Free Power Back Door (kick sensor)
operation setting off.
■When reconnecting the 12-volt battery
To enable the power back door to operate
properly, close the power back door manu-
ally.
■Jam protection function
Sensors are installed in the right and left
sides of the power back door. When the
door is automatically closing and the sen-
sors are pushed due to an object being
caught, etc., the jam protection function will
operate.
From that position the door will automati-
cally move a little in the opposite direction
and then the function will stop.

1213-2. Opening, closing and locking the doors
3
Before driving
WARNING
●If the operating conditions of the
power back door (P.117) are no lon-
ger met, a buzzer may sound and the
power back door may stop opening or
closing. The power back door must
then be operated manually. Take extra
care on an incline in this situation, as
the power back door may move sud-
denly.
●On an incline, the power back door
may suddenly shut af ter it opens. Make
sure the power back door is fully open
and secure.
●In the following situations, the power
back door may detect an abnormality
and automatic operation may be
stopped. In this case, the power back
door must then be operated manually.
Take extra care in this situation, as the
stopped power back door may sud-
denly open or close, causing an acci-
dent.
• When the power back door contacts an obstacle
• When the 12-volt battery voltage sud- denly drops, such as when the power
switch is turned to ON mode or the
hybrid system is started during auto-
matic operation
●If a bicycle carrier or similar heavy
object is attached to the power back
door, the power back door may not
operate, causing a malfunction, or the
power back door may suddenly shut
again after being opened, causing
someone’s hands, arms, head or neck
to be caught and in jured. When install-
ing an accessory part to the power
back door, using a genuine Lexus part
is recommended.
■Jam protection function
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
●Never use any part of your body to
intentionally activa te the jam protec-
tion function.
●The jam protection function may not
work if something gets caught just
before the power back door fully
closes. Be careful not to get fingers
caught or anything else.
●The jam protection function may not
work depending on the shape of the
object that is caught. Be careful not to
catch fingers or anything else.
■Hands Free Power Back Door (if
equipped)
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
●Check the safety of the surrounding
area to make sure there are no obsta-
cles or anything that could cause any
of your belongings to get caught.
●Exhaust gasses cause the exhaust
pipes to become quite hot. When
operating the Hands Free Power Back
Door, be careful not to touch the
exhaust pipe.
●Do not operate the Hands Free Power
Back Door if there is little space under
the rear bumper.