2019 LEXUS RX450H remote start

1493-2. Opening, closing and locking the doors
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Operation of each component
RX450h_RX450hL_U
■Back door closer
In the event that the power back door is left slightly open, the back door closer will auto-
matically close it to the fully closed position.
●The back door closer can function wh en the power switch is in any mode.
●The power back door can be opened using the back door opener switch even if the
back door closer is operating.
■Operation of the power back door
●When the power back door begins to operate, the emergency flashers will flash twice
and a buzzer will sound.
●When the power back door is disabled ( P. 112), the power back door will not operate
but can be opened and closed manually.
●The power back door turns to manual operat ion when the back door opener switch is
pressed while the power back door is in an automatic opening/closing operation.
●If anything obstructs the power back door while opening, a buzzer will sound and the
power back door will stop immediately. If anything obstructs the power back door while
closing, a buzzer will sound and the power back door will automatically move slightly in
the opposite direction and then stop.
■Back door reserve lock function
This function reserves the locking of the power back door when the power back door is
open. If the following operations are perfor med, all of the doors except the power back
door will lock and then the power back door will lock when it is completely closed.
Close all of the doors, ex cept the power back door.
Perform an automatic closing operation of the power back door and lock the doors
using the wireless remote control ( P. 136) or smart access system with push-button
start ( P. 136, 142) while the power back door is closing.
Also, if the back door does no t fully close due to the operation of the jam protection func-
tion, etc., while the back door is automatically closing after a reserve lock operation is
performed, the reserve lock function is canceled and all the doors will unlock.
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1593-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL_U
■Alarms and warning messages
A combination of exterior and interior alar ms as well as warning messages shown on the
multi-information display are used to prevent theft of the vehicle and accidents resulting
from erroneous operation. Take appropriate measures in response to any warning mes-
sage on the multi-information display. ( P. 667)
When only an alarm sounds, circumstances and correction procedures are as follows.
■If a warning message is displayed indicating that there is a malfunction in the smart
access system with push-button start
 P. 667
■Battery-saving function
The battery-saving function w ill be activated in order to prevent the electronic key bat-
tery and the 12-volt battery from being discha rged while the vehicle is not in operation
for a long time.
●In the following situations, the smart acce ss system with push-button start may take
some time to unlock the doors.
• The electronic key has been le ft 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-button st art has not been used for 5 days or lon-
ger.
●If the smart access system with push-button start has not been used for 14 days or lon-
ger, the doors cannot be unlocked at any doors except the driver’s door. In this case,
take hold of the driver’s d oor handle, or use the wireless remote control or the mechan-
ical key, to unlock the doors.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 5
secondsAn attempt was made to lock
the vehicle while a door was
open.Close all of the doors and
lock the doors again.
Interior alarm pings
repeatedly
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.

1603-2. Opening, closing and locking the doors
RX450h_RX450hL_U
■Electronic Key battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from re ceiving radio waves.
■Conditions affecting operation
The smart access system with push-button st art, wireless remote control and immobilizer
system use weak radio waves. In the following situations, the communication between the
electronic key and the vehicle may be affect ed, preventing the smart access system with
push-button start, wireless remote control an d immobilizer system from operating prop-
erly. (Ways of coping: P. 692)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas st ation, radio station, large display, airport or
other facility that generates strong radio wave s or electrical noise
●When the electronic key is in contact with, or is covered by the following metallic
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, cordle ss phone or other wireless communication
devices
• Another vehicle’s electronic key, another electronic key of your vehicle, or a wireless
key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
●When the vehicle is parked in a pay parking spot where radio waves are emitted
Press twice while pressing and holding .
Confirm that the electronic 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 function, press any of the
electronic key buttons.

1613-2. Opening, closing and locking the doors
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Operation of each component
RX450h_RX450hL_U
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window 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 th e instrument panel, luggage co mpartment, floor, or in the
door pockets or glove box when the hybrid system is started or power switch modes
are changed.
●Do not leave the electronic key on top of th e 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 outs ide the cabin and the door will become lockable from the
outside, possibly trapping the electronic key inside the vehicle.
●As long as the electronic key is within th e 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 wa ter 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 approx imately 60 seconds if the doors are not
opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the d oor may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock sensor while wearin g gloves may delay or prevent lock opera-
tion. 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 el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In that case, follow the following 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. 160)
●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 mult i-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 de tection area, it may take slightly longer to
unlock the doors after the door handle is gripped.

1623-2. Opening, closing and locking the doors
RX450h_RX450hL_U
●Fingernails may scrape against the door duri ng operation of the door handle. Be care-
ful not to injure fingernails or damage the surface of the door.
*: This setting can be customiz ed at your Lexus dealer.
■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 system with push-button start can be deactivated in advance.
(  P. 736)
●Setting the electronic key to battery-saving mode helps to reduce key battery deple-
tion. ( P. 160)
■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 prevention may not operate.)
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors: Use the mechanical key. (P. 692)
●Starting the hybrid system: P. 693
■Customization
Some functions can be customized. ( P. 736)
■If the smart access system with push-button start has been deactivated in a customized
setting
●Locking and unlocking the doors:
Use the wireless remote cont rol or mechanical key. (P. 136, 142, 692)
●Starting the hybrid system and changing power switch modes: P. 693
●Stopping the hybrid system: P. 240

1843-3. Adjusting the seats
RX450h_RX450hL_U
Each electronic key can be registered to recall your preferred driving position.
■Registering procedure
Record your driving position to button “1”, “2” or “3” before performing the
following:
Carry only the key you want to regist er, and then close the driver’s door.
If 2 or more keys are in the vehicle, the driving position cannot be recorded
properly.
Check that the shift lever is in P.
Turn the power switch to ON mode.
Recall the driving position that you want to record.
While pressing the recalled but-
ton, press and hold the door lock
switch (either lock or unlock) until
the buzzer sounds.
If the button could not be registered,
the buzzer sounds continuously for
approximately 3 seconds.
■Recall procedureMake sure that the doors are locked before recalling the driving position.
Carry the electronic key that has been registered to the driving position,
and then unlock and open the driver’s door using the smart access system
with push-button start or wireless remote control.
The driving position will move to the recorded position (not including the steering
wheel and head-up display
*). However, the seat will move to a position slightly
behind the recorded position in order to make entering the vehicle easier.
If the driving position is in a position th at has already been recorded, the seat and
outside rear view mirrors will not move.
*: If equipped
Turn the power switch to ACCESSORY mode or ON mode, or fasten a
seat belt.
The seat, steering wheel and head-up display (if equipped) will move to the
recorded position.
Memory recall function (driver’s side only)
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2614-3. Operating the lights and wipers
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Driving
RX450h_RX450hL_U
■Welcome lighting
If the headlight switch is turned to and the surrounding area is dark, unlocking the
doors using the smart access system with pu sh-button start or wireless remote control
will turn the parking lights and tail lights on automatically.
■Windshield wiper linked headlight illumination
When driving during daytime with the headlight switch turned to , if the windshield
wipers are used, the headlights will turn on automatically after several seconds to help
enhance the visibility of your vehicle.
■12-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 saving
function will operate and automatically turn off all the lights after approximately 20 min-
utes. 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 canceled
once and then reactivated. All the lights will turn off automa tically 20 minutes after the
12-volt battery-saving function has been reactivated:
●When the headlight switch is operated
●When a door is opened or closed
■Customization
Some functions can be customized. ( P. 736)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than ne cessary when the hybrid system is off.

3314-5. Using the driving support systems
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Driving
RX450h_RX450hL_U• Immediately after the RCTA function is turned on
• Immediately after the hybrid system is started with the RCTA function on
●Instances of the RCTA function unnecessari
ly detecting a vehicle and/or object may
increase in the following situations:
• When a vehicle passes by th e side of your vehicle
• When the distance between your vehicle and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may re flect electrical waves toward the rear of
the vehicle, is short
You can change the BSM function/RCTA function settings.
Press the “MENU” button on the Remote Touch, and then select on the
screen.
Select “Vehicle”, and then select “Blind Spot Monito r Settings” on the screen.
Select the desired setting. ( P. 745)
• When backing out of a shallow angle park-
ing spot
• When the sensors cannot detect a vehicle due to obstructions
• When the parking space faces a street and vehicles are being driven on the street
Setting up BSM function/RCTA function
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