2021 LEXUS RX450h Owners Manual

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.

1223-2. Opening, closing and locking the doors
NOTICE
■Back door spindles
The power back door is equipped with
spindles that hold the power back
door in place.
Observe the following precautions.
Failure to do so may cause damage to
the back door spindle , resulting in
malfunction.
●Do not attach any foreign objects, such
as stickers, plastic sheets, or adhesives
to the spindle rod.
●Do not attach any accessories other
than genuine Lexus parts to the power
back door.
●Do not place your ha nd on the spindle
or apply lateral forces to it.
■To prevent back door closer malfunc-
tion
●Do not apply excessive force to the
power back door while the back door
closer is operating. Applying excessive
force may cause the back door closer
to malfunction.
●If the power back door is opened and
closed repeatedly in a short amount of
time, the back door closer may stop
operating. In this case, manually open
the power back door once and wait for
a while before attempting to close it
again.
A
A
■To prevent malfunction of the power
back door
●Make sure that there is no ice between
the power back door and frame that
would prevent movement of the power
back door. Operating the power back
door when excessive load is present
on the power back door may cause a
malfunction.
●Do not apply excessive force to the
power back door while the power
back door is operating.
●Take care not to damage the sensors
installed on the right and left edges of
the power back door (
P.119) with a
knife or other sharp object. If a sensor
is disconnected, the power back door
will not close automatically.
■Close & lock function/Hands free
close & lock function
When closing the power back door using
the close & lock function/hands free
close & lock function, a different buzzer
than the normal one will sound before
the operation begins.
To check that the operation has started
correctly, check that a different buzzer
than the normal one has sounded.
Additionally, when the power back door
is fully closed and locked, operation sig-
nals will indicate that all of the doors have
been locked.
Before leaving the vehicle, make sure
that the operational signals have oper-
ated and that all of the doors are locked.
■Hands Free Power Back Door pre-
cautions (if equipped)
The kick sensor is lo cated behind lower
center part of the rear bumper. Observe
the following to ensure that the Hands
Free Power Back Door function operates
properly:

1233-2. Opening, closing and locking the doors
3
Before driving
The power back door system can be
enabled/disabled on the multi-informa-
tion display. (P.88)
1 Press or of the meter con-
trol switches and select .
2 Press or of the meter con-
trol switches, select the “Vehicle
Settings” and then press .
3 Press or of the meter con-
trol switches, select and
then press .
4 Press or of the meter con-
trol switches, and then select
“PBD”.
5 ON and OFF will be switched over
with presses of on the meter
control switches.
When OFF is selected and the operations
of the power back door is made to stop
from the of multi-information display,
unless it is set to ON , the operation of the
power back door will not return. (No
return in the power switch operation)
NOTICE
●Keep the lower center part of the rear
bumper clean at all times.
If the lower center part of the rear
bumper is dirty or covered with snow, the
Hands Free Power Back Door may not
operate. In this situation, clean off the dirt
or snow, move the vehicle from the cur-
rent position and then check if the Hands
Free Power Back Door operates. If it
does not operate, have the vehicle
inspected by your Lexus dealer.
●Do not apply coatings that have a rain
clearing (hydrophilic ) effect, or other
coatings, to the lower center part of
the rear bumper.
●Do not park the vehicle near objects
that may move and contact the lower
center part of the rear bumper, such as
grass or trees.
If the vehicle has been parked for a while
near objects that may move and contact
the lower center part of the rear bumper,
such as grass or trees, the Hands Free
Power Back Door ma y not operate. In
this situation, move the vehicle from the
current position and then check if the
Hands Free Power Back Door operates.
If it does not operate, have the vehicle
inspected by your Lexus dealer.
●Do not subject the rear bumper or its
surrounding area to a strong impact.
If the rear bumper or its surrounding area
has been subjected to a strong impact,
the Hands Free Power Back Door may
not operate properly.
If the Hands Free Power Back Door does
not operate in the following situations,
have the vehicle inspected by your Lexus
dealer.
• The kick sensor or its surrounding area has been subjected to a strong impact.
• The lower center part of the rear bumper is scratched or damaged.
●Do not disassemble the rear bumper.
●Do not attach stickers to the rear
bumper.
●Do not paint the rear bumper.
●If a bicycle carrier or similar heavy
object is attached to the power back
door, disable the Hands Free Power
Back Door (kick sensor).
Canceling the power back door
system

1243-2. Opening, closing and locking the doors
The Hands Free Power Back Door
(kick sensor) can be enabled/disabled
on the multi-information display.
( P.88)
1 Press or of the meter con-
trol switches and select .
2 Press or of the meter con-
trol switches, select the “Vehicle
Settings” and then press .
3 Press or of the meter con-
trol switches, select and
then press .
4 Press or of the meter con-
trol switches, and then select “Kick
Sensor”.
5 ON and OFF will be switched over
with presses of on the meter
control switches.
When OFF is selected and the operations
of the Hands Free Power Back Door is
made to stop from the of multi-infor-
mation display, unless it is set to ON, the
operation of the Hands Free Power Back
Door will not return. (No return in the
power switch operation)
The open position of the power back-
door can be adjusted.
1 Stop the power back door at the
desired position. ( P.115) 2
Press and hold the switch on
the lower part of the power back
door for 2 seconds.
 When setting is complete, a buzzer
will sound 4 times.
 The next time the power back door
is opened, it will stop at that position.
■Returning the power back door opening
position to the default setting
Press and hold the switch on the
lower part of the power back door for 7
seconds.
A buzzer will sound twice. The next time
the power back door is opened, it will open
to the default position.
■Customization
The opening position can be set with the
navigation system or multimedia system.
Priority for the stop position is given to the
last position set by either the switch,
navigation system or multimedia system.
(Customizable features: P.480)
Canceling the Hands Free
Power Back Door (if equipped)
Adjusting the open position of
the power back door

1253-2. Opening, closing and locking the doors
3
Before driving
■Antenna locationAntennas outside the cabin
Antennas inside the cabin
Antenna outside the luggage compart-
ment
■Effective range (areas within which the
electronic key is detected)When locking or unlocking the doors
The system can be operated when the
electronic key is within about 2.3 ft. (0.7 m)
of an outside door handle. (Only the doors
detecting the key can be operated.)
When starting the hybrid system or
changing power switch modes
The system can be operated when the
electronic key is inside the vehicle.
■Alarms and warning messages
An alarm sounds and warning messages
are displayed on the multi-information dis-
play to protect against unexpected acci-
dents or theft of the vehicle resulting from
erroneous operation. When a warning mes-
sage is displayed, take appropriate mea-
sures based on the displayed message.
(  P.428)
When only an alarm sounds, circumstances
and correction procedures are as follows.
●When an exterior alarm sounds once for
5 seconds
●When an interior alarm sounds continu-
ously
Smart access system with
push-button start
The following operations can be
performed simply by carrying the
electronic key on your person, for
example in your pocket. The driver
should always carry the electronic
key.
 Locks and unlocks the doors
( P.109)
 Locks and unlocks the back door
( P.114)
 Starts and stops the hybrid system
( P.184)
A
B
C
SituationCorrection
procedure
An attempt was made to
lock the vehicle while a
door was open.Close all of the
doors and lock
the doors
again.
A
B

1263-2. Opening, closing and locking the doors
■If “Key Left inside 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 elec-
tronic key from the vehicle and lock the
doors again.
■Battery-saving function
The battery-saving fu nction 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 in an
area of 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 cannot be unlocked at
any doors except the driver’s door. In this
case, take hold of the driver’s door han-
dle, or use the wireless remote control or
the mechanical key, to unlock the doors.
■Turning an electronic key to bat-
tery-saving mode
When battery-saving mode is set, battery
depletion is minimized by stopping the elec-
tronic key from re ceiving radio waves. Press twice while pressing and holding
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the
smart access system with push-button start
cannot be used. To cancel the function,
press any of the electronic key buttons.
■Conditions affecting operation
The smart access system with push-button
start, wireless remote control and immobi-
lizer system use weak radio waves. In the
following situations, the communication
between the electronic key and the vehicle
may be affected, preventing the smart
access system with push-button start, wire-
less remote control and immobilizer system
from operating properly. (Ways of coping:
 P.447)
●When the electronic key battery is
depleted
●Near a TV tower, electric power plant,
gas station, radio stat ion, large display,
airport or other fac ility that generates
strong radio waves or electrical noise
●When the electronic key is in contact
with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio
waves) are being used nearby
●When carrying the electronic key
together with the following devices that
emit radio waves
• Portable radio, cellular phone, cordless
phone or other wireless communication
SituationCorrection
procedure
The power switch was
turned to ACCESSORY
mode while the driver’s
door was open (The
driver’s door was opened
when the power switch
was in ACCESSORY
mode).
Turn the power
switch off and
close the
driver’s door.

1273-2. Opening, closing and locking the doors
3
Before driving
devices
• Another vehicle’s electronic key, another electronic key of your vehicle, or a wire-
less key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or
metallic objects are attached to the rear
window
●When the electronic key is placed near a
battery charger or electronic devices
●When the vehicle is parked in a pay park-
ing spot where radio waves are emitted
■Note for the entry function
●Even when the electronic key is within the
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 rear
bumper center when the back door is
opened.
• The electronic key is on the instrument panel, luggage compar tment, floor, or in
the door pockets or glove box when the
hybrid system is star ted or power switch
modes are changed.
●Do 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 door
will become lockable from the outside,
possibly trapping the electronic key
inside the vehicle.
●As long as the electron ic key is within the
effective range, the doors may be locked
or unlocked by anyone.
●Even 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.
●The doors may unlock 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 door will automatically be
locked after approximately 60 seconds if
the doors are not opened and closed.)
●If 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.)
●Touching the door lock sensor while
wearing gloves may delay or prevent lock
operation. Remove the gloves and touch
the lock sensor again.
●When 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.
●If the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. In that 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.126)
●If 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.
●The 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.
●A 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.
●If there is another electronic key in the

1283-2. Opening, closing and locking the doors
detection area, it may take slightly longer
to unlock the doors after the door handle
is gripped.
●Fingernails may scrape against the door
during operation of the door handle. Be
careful not to injure fingernails or dam-
age the surface of the door.
■When the vehicle is not driven for
extended periods
●To prevent theft of the vehicle, do not
leave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access syst em with push-but-
ton start can be deactivated in advance.
●Setting the electronic key to battery-sav-
ing mode helps to reduce key battery
depletion. ( P.126)
■To operate the system properly
Make sure to carry the electronic key when
operating the system. Do not get the elec-
tronic key too close to the vehicle when
operating the system from the outside of the
vehicle.
Depending on the position and holding
condition of the electronic key, the key may
not be detected correctly and the system
may not operate properly. (The alarm may
go off accidentally, or the door lock preven-
tion may not operate.)
■If the smart access system with
push-button start does not operate
properly
●If the doors cannot be locked or unlocked
and the back door cannot be opened,
perform the following.
• Bring the electronic key close to the door handle and perform a lock or unlock
operation.
• Bring the electronic key close to the but- ton on the back door ( P.114) and press
the button.
• Use the wireless remote control.
If the doors cannot be locked or unlocked
by perform the above, use the mechanical
key. ( P.447) However, if the mechanical
key is used while the al arm system is set, the
warning will sound. ( P.75)
●If the hybrid system cannot be started,
refer to  P.448
■Customization
Some functions can be customized.
(  P.480)
■If the smart access system with
push-button start has been deactivated
in a customized setting
●Locking and unlockin g the doors: Use
the wireless remote control or mechani-
cal key. ( P.109, 114, 447)
●Starting the hybrid system and changing
power switch modes: P.448
●Stopping the hybrid system: P.186