2021 LEXUS NX300h key

771-5. Theft deterrent system
LEXUS NX300h Owners Manual_USA_M78578_en
1
For safety and security
■Items to check before locking the
vehicle
To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 Nobody is in the vehicle.
 The windows and moon roof (if
equipped) are closed before the
alarm is set.
 No valuables or other personal
items are left in the vehicle.
■Setting
Close the doors and hood, and lock all
the doors using the entry function or
wireless remote control. The system
will be set automatically after 30 sec-
onds.
Except for Canada, the alarm can also
be set using the mechanical key.
The indicator light changes from being on
to flashing when the system is set.
■Canceling or stopping
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors using the entry
function or wireless remote control.
(Except for Canada, the mechanical
key can also be used.)
 Turn the power switch to ACCES-
SORY or ON mode, or start the
hybrid system. (The alarm will be
deactivated or stopped after a few
seconds.)
■System maintenance
The vehicle has a maintenance-free type
alarm system.
■Triggering of the alarm
The alarm may be triggered in the following
situations:
(Stopping the alarm deactivates the alarm
system.)
Alarm
The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 Except for Canada: A locked
door is unlocked or opened in any
way other than using the entry
function, wireless remote control
or mechanical key. (The doors will
lock again automatically.)
 For Canada: A locked door is
unlocked or opened in any way
other than using the entry func-
tion or wireless remote control.
(The doors will lock again auto-
matically.)
The hood is opened.
Setting/canceling/stopping the
alarm system

781-5. Theft deterrent system
LEXUS NX300h Owners Manual_USA_M78578_en
●For Canada: The doors are unlocked
using the mechanical key.
●A person inside the vehicle opens a door
or hood, or unlocks the vehicle using an
inside lock button.
●The 12-volt battery is recharged or
replaced when the vehicle is locked.
( P.416)
■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.

105
LEXUS NX300h Owners Manual_USA_M78578_en
3
3
Before driving
Before driving
3-1. Key information
Keys ................................................. 106
3-2. Opening, closing and locking the doors
Side doors ...................................... 110
Back door ....................................... 114
Smart access system with push- button start ................................. 126
3-3. Adjusting the seats Front seats ..................................... 132
Rear seats ...................................... 133
Driving position memory ........ 138
Head restraints............................. 141
3-4. Adjusting the steering wheel and mirrors
Steering wheel............................. 143
Inside rear view mirror............. 144
Outside rear view mirrors ...... 146
3-5. Opening, closing the windows and moon roof
Power windows........................... 148
Moon roof ..................................... 150

1063-1. Key information
LEXUS NX300h Owners Manual_USA_M78578_en
3-1.Key information
The following keys are provided with
the vehicle.
Electronic keys
• Operating the smart access system with push-button start ( P.126)
• Operating the wireless remote control function
Mechanical keys
Key number plate
Card key (electronic key) (if
equipped)
Operating the smart access system with
push-button start ( P.126)
■Card key (if equipped)
●The mechanical key that is stored inside
the card key should be used only if a
problem arises, such as when the card
key does not operate properly.
●If the battery cover is not installed and the
battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive terminal
facing the Lexus emblem.
●The card key is not waterproof.
■When riding in an aircraft
When bringing an electronic 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 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.
(The card key battery life is about a year
and a half.)
●If the battery becomes low, an alarm will
sound in the cabin wh en the hybrid sys-
tem stops.
●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:
Keys
Key types
A
B
C
D

1073-1. Key information
LEXUS NX300h Owners Manual_USA_M78578_en
3
Before driving
•TVs
• Personal computers
• Cellular phones, cordless phones and
battery chargers
• Recharging cellular phones or cordless
phones
• Induction cookers
• Table lamps
■Replacing the battery
 P.369
■Confirmation of the registered key
number
The number of keys already registered to
the vehicle can be confirmed. Ask your
Lexus dealer for details.
The electronic keys are equipped with
NOTICE
■To prevent key damage
●Do not drop the keys, subject them to
strong shocks or bend them.
●Do not expose the keys to high tem-
peratures for long periods of time.
●Do not get the keys wet or wash them
in an ultrasonic washer, etc.
●Do not attach metallic or magnetic
materials to the keys or place the keys
close to such materials.
●Do not disassemb le the keys.
●Do not attach a sticker or anything else
to the surface of the electronic key.
●Do not place the keys near objects that
produce magnetic fields, such as TVs,
audio systems and induction cookers,
or medical electrical equipment, such
as low-frequency therapy equipment.
■Carrying the electronic key on your
person
Carry the electronic key 3.9 in. (10 cm)
or more away from electric appliances
that are turned on. Radio waves emitted
from electric applianc es within 3.9 in. (10
cm) of the electronic key may interfere
with the key, causing the key to not func-
tion properly.
■In case of a smart access system with
push-button start malfunction or
other key related problems
 P.412
■When an electronic key is lost
 P.411
■Handling the card key
●If the battery or card key terminals get
wet, the battery may corrode and the
card key may stop working.
If the key is dropped into water, or if
drinking water, etc., is spilled on the
key, immediately remove the battery
cover and wipe the battery and termi-
nals. (To remove the battery cover,
lightly grasp and pull it.) If the battery is
corroded, have your Lexus dealer
replace the battery.
●Do not crush the battery cover or use
a screwdriver to remove the battery
cover.
Forcibly removing the battery cover
may bend or damage the key.
●If the battery cover is frequently
removed, the battery cover may
become loose.
●When installing the battery, make sure
to check the direction of the battery.
Installing the battery in the wrong
direction may cause the battery to
deplete rapidly.
●The surface of the card key may be
damaged, or its coating may peel off in
the following situations:
• The card key is ca rried together with
hard objects, such as coins and keys.
• The card key is scraped with a sharp object, such as the tip of a mechanical
pencil.
• The surface of the card key is wiped with thinner or benzene.
Wireless remote control

1083-1. Key information
LEXUS NX300h Owners Manual_USA_M78578_en
the following wireless remote control:
Locks all the doors ( P.110)
Unlocks all the doors ( P.110)
Opens the windows and moon
roof
*1, 2 (  P.110)
Opens and closes the power back
door
*1 (  P.117)
Sounds the alarm ( P.108)
*1: If equipped
*2: This setting must be customized at your
Lexus dealer.
■Theft deterrent panic mode
When is pressed for longer than
about 1 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.
■Back door reserve lock function (vehi-
cles with power back door)
This function is a function which reserves
locking of all doors, beforehand, when the
back door is open. When the follow is done,
all the doors except the back door are
locked and then back door will also be
locked at the same time it is closed.
1 Close all doors, except the back door.
2 Push the wireless lock button during the
automatic closing operation of the back
door.
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.412)
A
B
C
D
E
Using the mechanical key

1093-1. Key information
LEXUS NX300h Owners Manual_USA_M78578_en
3
Before driving
■When required to leave the vehicle’s
key with a parking attendant
Lock the glove box as circumstances
demand. ( P.306)
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.411
■If a wrong key is used
The key cylinder rotates freely to isolate
inside mechanism.
■Card key
●If it is difficult to take out the mechanical
key, push down the release button using a
pen tip, etc. If it is still difficult to pull it out,
use a coin, etc.
●To store the mechanical key in the card
key, insert it while pressing the release
button.
NOTICE
■Handling the card key
Do not apply excess force when inserting
the mechanical key into the card key.
Doing so may damage the card key.

1103-2. Opening, closing and locking the doors
LEXUS NX300h Owners Manual_USA_M78578_en
3-2.Opening, closing and locking the doors
■Using the smart access system with
push-button start
Carry the electronic key to enable this
function.
1 Grip the driver’s door handle to
unlock the door. Grip any passen-
ger door handle to unlock all the
doors.
*
Make sure to touch the sensor on the back
of the handle.
The doors cannot be unlocked for 3 sec-
onds after the doors are locked.
2Touch the lock sensor (the indenta-
tion on the surface of the door han-
dle) to lock all the doors.
Check that the door is securely locked.
*: The door unlock settings can be
changed.
■Using the wireless remote control
1 Locks all the doors
Check that the door is securely locked.
2Unlocks all the doors
Pressing the button unlocks the driver’s
door. Pressing the button again within 3
seconds unlocks the other doors.
Press and hold to open the windows and
moon roof
*1, 2
*1
: If equipped
*2: This setting must be customized at your
Lexus dealer.
■Switching the door unlock function
It is possible to set which doors the entry
function unlocks using the wireless remote
control.
1 Turn the power switch off.
2 When the indicator light on the key sur-
face is not on, press and hold ,
or for approximately 5
seconds while pre ssing and holding
.
The setting changes each time an operation
is performed, as shown below. (When
changing the setting continuously, release
the buttons, wait for at least 5 seconds, and
repeat step 2 .)
Side doors
The vehicle can be locked and
unlocked using the entry function,
wireless remote control or door
lock switch.
Unlocking and locking the doors
from the outside