2019 LEXUS NX300H key

3897-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
7
When trouble arises
1 Remove the cover inside the lug-
gage compartment by inserting a
screwdriver.
When removing the cover, to pre-
vent damage, cover the tip of the
screwdriver with a rag.
2 After removing the cover, pull the
lever to unlock the fuel filler door
and it will be ready to open as usual.
■Things to check before taking measures
●Make sure that the smart access system
with push-button start has not been deac-
tivated in the customizat ion setting. If it is
off, turn the function on.
●Check if battery-saving mo de is set. If it is
set, cancel the function. ( P.121)
Use the mechanical key ( P.102) to
perform the following operations.
If the fuel filler door cannot
be opened
If the fuel filler door opener switch
cannot be operated, the following
procedure can be used to open the
fuel filler door.
Opening the fuel filler door
If the electronic key does not
operate properly
If communication between the
electronic key and vehicle is inter-
rupted ( P.121) or the electronic
key cannot be used because the
battery is depleted, the smart
access system with push-button
start and wireless remote control
cannot be used. In such cases, the
doors can be opened and the hybrid
system can be started by following
the procedure below.
NOTICE
■In case of a smart access system with
push-button start malfunction or
other key related problems
Take your vehicle with all the electronic
keys provided with your vehicle, includ-
ing the card key, to your Lexus dealer.
Locking and unlocking the doors

3907-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
■Unlocking the door
1 Insert the mechanical key while
pulling on the driver’s door handle.
2 Turn the key in order to perform the
following operations.
Unlocking the door
Opens the windows and moon
roof
* (turn and hold)
Closes the windows and moon
roof
* (turn and hold)
*: This setting must be customized at your Lexus dealer
3 Remove the key, return the handle,
and then pull the handle again.
■Locking the door
1 Move the inside lock button to the
lock position.
2 Close the door.
1 Ensure that the shift lever is in P and
depress the brake pedal.
2 Touch the Lexus emblem side of the
electronic key to the power switch.
When the electronic key is detected, a
buzzer sounds and the power switch will
turn to ON mode.
When the smart access system with push-
button start is deactivated in customization
setting, the power switch will turn to
A
B
C
WARNING
■When using the mechanical key and
operating the power windows or
moon roof
Operate the power window or moon
roof after checking to make sure that
there is no possibility of any passenger
having any of their body parts caught in
the window or moon roof.
Also, do not allow children to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or moon roof.
Starting the hybrid system

3917-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
7
When trouble arises
ACCESSORY mode.
3 Firmly depress the brake pedal and
check that message shown on the
multi-information display.
4 Press the power switch.
In the event that the hybrid system still can-
not be operated, contact your Lexus
dealer.
■Stopping the hybrid system
Set the parking brake, shift the shift lever to
P and press the power switch as you nor-
mally do when stopping the hybrid system.
■Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted.
■Alarm
Using the mechanical key to lock the doors
will not set the alarm system. If a door is
unlocked using the mechanical key when
the alarm system is set, the alarm may be
triggered.
■Changing power switch modes
Release the brake pe dal and press the
power switch in step 3 above.
The hybrid system does not start and modes
will be changed each time the switch is
pressed. ( P.170)

3927-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle by following the steps below.
1Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and the doors may lock.
( P.72)
2 Open the hood ( P.326) and fuse
box cover.
3 Open the exclusive jump starting
terminal cover.
4 Remove the engine cover.If the 12-volt battery is dis-
charged
The following procedures may be
used to start the hybrid system if the
vehicle’s 12-volt battery is dis-
charged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the hybrid system

3947-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
■Starting the hybrid system when the 12-
volt battery is discharged
The hybrid system cannot be started by
push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the hybrid system is off.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradua lly even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the hybrid system may be
unable to start. (The 12-volt battery
recharges automatically while the hybrid
system is operating.)
■When the 12-volt battery is removed or
discharged
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
●The hybrid system may not start on the
first attempt after the 12-volt battery has
recharged but will start normally after the
second attempt. This is not a malfunction.
●The power switch mode is memorized by
the vehicle. When the 12-volt battery is
reconnected, the system will return to the
mode it was in before the 12-volt battery
was discharged. Before disconnecting
the 12-volt battery, turn the power switch
off.
If you are unsure what mode the power
switch was in before the 12-volt battery
discharged, be especially careful when
reconnecting the 12-volt battery.
●Some systems may require initialization.
■When replacing the 12-volt battery
●Use a 12-volt battery that the case size is
same as the previous one (LN2), 20 hour
rate capacity (20HR) is equivalent
(60Ah) or greater, and performance rat-
ing (CCA) is equivalent (460A) or
greater.
• If the sizes differ, the 12-volt battery can-
not be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehicle is not
used is a short time, the 12-volt battery
may discharge and hybrid system may
not be able to start.
●After exchanging, firmly attach the fol-
lowing items to the exhaust hole of the 12-
volt battery.
• Use the exhaust hose that was attached to the 12-volt battery before
exchanging and confirm that it is firmly
connected to the hole section of the vehi-
cle.
• Use the exhaust hole plug included
with the 12-volt battery exchanged or the
one installed on the battery prior to the
exchange. (Depending on the 12-volt
battery to be exchanged, the exhaust
hole may be plugged.)
For details, consult your Lexus dealer.
C
A
B

4228-2. Customization
LEXUS NX300h Owners Manu-
al_USA_M78287_en
Definition of symbols: O = Available, – =Not available
■Door lock (P.104, 389)
■Smart access system with push-butto n start and wireless remote control
(  P.104, 120)
FunctionDefault settingCustomized set-
ting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in first
step, all doors
unlocked in sec-
ond step
All doors
unlocked in first
step
——O—
Automatic door locking func-
tionShift position
linked door lock-
ing operationOffO—O—
Speed linked
door locking
operation
O—O—
Automatic door unlocking
function
Shift position
linked door
unlocking opera-
tionOffO—O—
Driver’s door
linked door
unlocking opera-
tion
O—O—
FunctionDefault settingCustomized set-ting
Operation signal (emergency
flashers)OnOffO—O—
Operation buzzer volume5OffO—O—1 to 7
Time elapsed before the auto-
matic door lock function is
activated if a door is not
opened after being unlocked
60 seconds
Off
O—O—30 seconds
120 seconds
Open door reminder buzzer
(When locking the vehicle)OnOff——O—
ABCD
ABCD

4248-2. Customization
LEXUS NX300h Owners Manu-
al_USA_M78287_en
■Lights (P.182)
■Illumination ( P.276)
■Multi-information display ( P.79, 84)
FunctionDefault settingCustomized set-
ting
Daytime Running Lights
(Daytime running lights can
be disabled)
OnOffO—O—
FunctionDefault settingCustomized set-ting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O—O—7.5 seconds
30 seconds
Time elapsed before the exte-
rior lights turn off15 seconds
Off
O—O—7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff——O—
Operation when the doors
are unlockedOnOff——O—
Operation when you
approach the vehicle with the
electronic key on your person
OnOff——O—
Footwell lightingOnOff——O—
Fading out of the outer foot
lights when they turn offLongShort——O—
FunctionDefault settingCustomized set-ting
Changeover to tachometer
when Sport mode is selectedAuto
Hybrid system
indicator (always)
—O——Tachometer (always)
EV indicatorOnOff—O——
ABCD
ABCD
ABCD

4268-2. Customization
LEXUS NX300h Owners Manu-
al_USA_M78287_en
■Automatic air conditioning system (P.266)
■Eco mode ( P.248)
■Power windows ( P.142)
■Moon roof*1 ( P.144)
*1: If equipped
*2: This function cannot be cust omized unless power window op erations, using the wireless
remote control or mechanical key, is enabled.
FunctionDefault settingCustomized set- ting
Switching between outside
air and recirculated air mode
linked to “AUTO” switch
operation
OnOffO—O—
A/C Auto switch operationOnOffO—O—
FunctionDefault settingCustomized set-ting
Heating/coolin g operation
minimized in Eco modeOnOff——O—
FunctionDefault settingCustomized set- ting
Mechanical key linked opera-
tionOffOn——O—
Wireless remote control
linked open operationOffOn——O—
FunctionDefault settingCustomized set-ting
Mechanical key linked opera-
tion
*2OffOn——O—
Wireless remote control
linked open or Tilt up opera-
tions
*2OffOn——O—
ABCD
ABCD
ABCD
ABCD