LEXUS RX450h 2015 Repair Manual

611-3. Opening, closing and locking the doors
1
Before driving ■
Security feature
If a door is not opened within approx imately 60 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.■
Battery-saving function
If the vehicle is parked for a long period of time, the battery-saving function is acti-
vated in order to prevent the vehicle 12-v olt battery from bein g discharged and the
electronic key battery from being depleted. ●
In the following circumstances, unlock ing the vehicle using the entry function
may take longer than usual:
• When the entry function has not been used for 5 days or more
• When the electronic key has been left within approximately 6 ft. (2 m) of the
vehicle for 10 minutes or more●
If the entry function has not been used for 14 days or more, the vehicle cannot
be unlocked by a door other than the dr iver's door. To unlock the vehicle, grip
the driver's door handle or use the wireless remote control or the mechanical
key.
The system will resume operation when: ●
The vehicle is locked using the lock sensor.●
The vehicle is locked/unlocked using the wireless remote control function.
(  P. 6 9 )●
The vehicle is locked/unlocked using the mechanical key. (  P. 7 8 1 )

621-3. Opening, closing and locking the doors
■
Conditions affecting operation
The smart access system with push-button start uses weak radio waves. In the fol-
lowing situations, the communication betw een the electronic key and the vehicle
may be affected, preventing the smart access system with push-button start, wire-
less remote control and immobilize r system from operating properly.
(Ways of coping:  P. 7 8 1 )●
When the electronic key battery is depleted●
Near a TV tower, electric power plant, gas station, radio st ation, large display,
airport or other facility that generates strong radio waves or electrical noise●
When carrying a portable radio, cellular phone, cordless phone or other wire-
less communication devices●
When the electronic key is in contact wi th, 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 multiple electronic keys are in the vicinity●
When another wireless key (that emits radio waves) is being used nearby●
When carrying the electronic key togeth er with the following devices that emit
radio waves
• Another vehicle's electronic key 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 metallic objects are attached to the rear
window

631-3. Opening, closing and locking the doors
1
Before driving ■
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 on the instrument panel, luggage cover or floor or in the
glove box.●
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 con-
ditions, it may be detected by the an tenna outside 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 the effective range, the doors may be
locked or unlocked by anyone. Howeve r, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.●
The doors may lock or unlock if the electronic key is within the effective range
and a large amount of water splashes on the door handle, such as in the rain or
in a car wash. The doors will automatically be locked after approximately 60
seconds if a door is 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 re mote control to unlock the doors.)

641-3. Opening, closing and locking the doors
■
Notes for locking the doors ●
Touching the door lock sensor while we aring 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. Place the key in a position 6 ft.
(2 m) or more separate from the vehicle while the vehicle is being washed. (Take
care to ensure that the key is not stolen.)●
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 atte mpt to operate it again, or use the lock
sensor on the lower part of the door handle.●
Fingernails may scrape against the door during operation of the door handle.
Be careful not to injure fingernails or damage the surface of the door. ■
Notes for the unlocking function ●
Gripping the door handle when wearing a glove may not unlock the door.●
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 detection area, it may take slightly longer
to unlock the doors after the door handle is gripped. ■
When the vehicle is not driven for extended periods ●
To prevent theft of the vehicle, do not le ave the electronic key within 6 ft. (2 m)
of the vehicle.
●
The smart access system with push-butto n start can be deactivated in advance.
(  P. 8 2 5 )

651-3. Opening, closing and locking the doors
1
Before driving ■
To operate the system properly
Make sure to carry the electronic key wh en operating the system. Do not get the
electronic key too close to the vehicle wh en 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 corr ectly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention function 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. 7 8 1 )●
Starting the hybrid system:  P. 7 8 2■
Electronic key battery depletion ●
The standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)●
If the battery becomes low, an alarm will sound in the cabin when the hybrid sys-
tem stops. (  P. 7 5 6 )●
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. 6 8 7 )
• The smart access system with push-but ton start or the wireless remote con-
trol does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.●
To avoid serious deterioration, 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
• Induction cookers
• Table lamps

661-3. Opening, closing and locking the doors
■
When the electronic key battery is fully depleted
 P. 6 8 7■
Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features  P. 825)■
Certification for the smart access system with push-button start
This system meets the certification requirements of Radio Law.
For vehicles sold in Hawaii, Guam, Saipan and Puerto Rico
FCC ID: NI4TMLF8-6
FCC ID: HYQ14ACX
FCC ID: HYQ14AEB
FCC ID: HYQ13CZF
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.

671-3. Opening, closing and locking the doors
1
Before driving For vehicles sold in the mainland U.S.A.
FCC ID: NI4TMLF8-6
FCC ID: HYQ14ACX
FCC ID: HYQ14AEB
FCC ID: HYQ13CZF
FCC ID: HYQ14ADF
FCC ID: HYQ14AEF
FCC ID: HYQ13CZG
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
This device complies with Industry Cana da licence-exempt RSS standard(s). Oper-
ation is subject to the following two conditions: (1) this device may not cause inter-
ference, and (2) this device must accept any interference, including interference
that may cause undesired operation of the device.

681-3. Opening, closing and locking the doors
CAUTION■
Caution regarding interference with electronic devices ●
People with implantable cardiac pacemakers, cardiac resynchronization therapy-
pacemakers or implantable cardioverter de fibrillators should keep away from the
smart access system antennas. (  P. 5 9 )
The radio waves may affect the operation of such devices. If necessary, the entry
function can be disabled. Ask your Lexus dealer for details, such as the frequency
of radio waves and timing of the emitte d radio waves. Then, consult your doctor
to see if you should disable the entry function.●
User of any electrical medical device other than implantable cardiac pacemak-
ers, cardiac resynchronization therapy-pacemakers or implantable cardioverter
defibrillators should consult the manufacturer of the device for information about
its operation under the influence of radio waves.
Radio waves could have unexpected effe cts on the operation of such medical
devices.
Ask your Lexus dealer for disabling the entry function.

6911-3. Opening, closing and locking the doors
Before driving Wireless remote control The wireless remote control can be used to lock and unlock the vehicle.
It also opens and closes the back door.
Locks all the doors
Unlocks all the doors Pressing the button unlocks the
driver’s door. Pressing the but-
ton again within 3 seconds
unlocks the other doors.
Opens the windows and
moon roof (press and hold)
Opens and closes the back
door (press and hold)
Sounds the alarm
(press and hold) (  P. 7 0 )

701-3. Opening, closing and locking the doors
■
Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that the doors have
been locked/unlocked. (Locked: Once; Unlocked: Twice)
Back door:
A buzzer sounds and the emergency flasher s flash twice to indicate that the back
door is opening/closing.
Windows and moon roof:
A buzzer sounds to indicate that the windows and moon roof are opening.■
Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer
sounds continuously. Fully close the door to stop the buzzer, and lock the vehicle
once more.■
Security feature
 P. 6 1■
Pa n i c m o d e
■
Back door operation
The back door can be opened even if it is locked. Lock the back door again when
you leave the vehicle. The back door will not be locked automatically after it has
been opened and then closed.
■
Alarm
Using the wireless remote control to lock the doors will set the alarm system.
(  P. 1 2 6 ) When is pressed for longer than
about one second, an alarm will sound inter-
mittently and the vehicle lights will flash to
deter any person from trying to break into or
damage your vehicle.
To stop the alarm, press any button on the
electronic key.