Page 414 of 484
4147-2. Steps to take in an emergency
LEXUS NX300h Owners Manual_USA_M78578_en
■Changing power switch modes
Release the brake pedal 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.177)
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.
1 Confirm 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.78)
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
Page 416 of 484

4167-2. Steps to take in an emergency
LEXUS NX300h Owners Manual_USA_M78578_en
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any mo ving parts as shown in the illustration
6 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.
7 Open and close any of the doors of
your vehicle with the power switch
off.
8 Maintain the engine speed of the
second vehicle and start the hybrid
system of your vehicle by turning
the power switch to ON mode.
9 Make sure the “READY” indicator
comes on. If the indicator light does
not come on, contact your Lexus
dealer.
10 Once the hybrid system has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
11 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to its original position.
Once the hybrid system starts, have
the vehicle inspected at your Lexus
dealer as soon as possible.
■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 gradually 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 batte ry 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 requ ire initialization.
B
C
D
Page 425 of 484
4258-1. Specifications
LEXUS NX300h Owners Manual_USA_M78578_en
8
Vehicle specifications
This number is also stamped under the
right-hand front seat.
■Engine number
The engine number is stamped on the
engine block as shown.
Engine
Model2.5 L 4-cylinder (2AR-FXE)
Type4-cylinder in line, 4-cycle, gasoline
Bore and stroke3.54 3.86 in. (90.0 98.0 mm)
Displacement152.2 cu.in. (2494 cm3)
Valve clearance (engine cold)Automatic adjustment
Drive belt tensionAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or higher
Fuel tank capacity (Reference)14.8 gal. (56 L, 12.3 Imp.gal.)
Page 444 of 484

4448-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
Settings that can be changed by your Lexus dealer
Settings that can be changed using the vehicle switch
Definition of symbols: O = Available, – =Not available
■Door lock ( P.110, 412)
■Smart access system with push-button start and wireless remote control
( P.110, 126)
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—
C
D
ABCD
ABCD
Page 445 of 484

4458-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
8
Vehicle specifications
■Smart access system with push-button start ( P.126)
■Wireless remote control ( P.107)
■Automatic light control system ( P.190)
FunctionDefault settingCustomized set-
ting
The doors that are unlocked
using the smart access sys-
tem with push-button start
can be selected
Driver’s doorAll the doorsO—OO
Smart access system with
push-button startOnOff——O—
Number of consecutive door
lock operations2 timesAs many as desired——O—
FunctionDefault settingCustomized set- ting
Wireless remote controlOnOff——O—
Unlocking operation
Driver’s door
unlocked in first step, all doors
unlocked in sec- ond step
All doors
unlocked in first
step
O—O—
Panic functionOnOff——O—
The function that validates the
switch of the wireless
remote control when locking
the door ( P.117)
When locking the
doorWhen unlocking
the door——O—
FunctionDefault settingCustomized set-ting
Light sensor sensitivityStandard-2 to 2O—O—
Adjust the time elapsed
before the headlights auto-
matically turn off
30 seconds
Off
O—O—60 seconds
90 seconds
ABCD
ABCD
ABCD
Page 446 of 484
4468-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
■Lights (P.190)
■Illumination ( P.302)
■Multi-information display ( P.84, 89)
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
Page 447 of 484

4478-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
8
Vehicle specifications
*1: The default setting varies according to countries.
*2: Some status screens cannot be registered (i ndicated on the multi-information display)
*3: 2 of the following items: current fuel consumption, average fuel economy (after reset),
average fuel economy (after refuel), average fuel economy (after start), average vehicle
speed (after reset), average vehicle speed (after start), distance (driving range), dis-
tance (after start), elapsed time (after reset), elapsed time (after start), blank
*4: Intersection guidance, Incoming calls, Adjust brightness
Language*1EnglishFrenchOO——Spanish
Units*1miles (MPG US)
miles
(MPG Imperial)
OO——km (L/100 km)
km (km/L)
switch settingsDrive information 1Desired status
screen
*2—O——
Drive information 1
Current fuel con- sumption
*3—O——Average fuel con-sumption (after reset)
Drive information 2
Distance (range)
*3—O——Average speed (after reset)
Drive information 3
Average fuel con-sumption (after refuel)
*3—O——
Elapsed time (after start)
Pop-up display*4OnOff—O——
Accent colorColor 1Color 2OO——
Clock24-hour display12-hour display—O——
FunctionDefault settingCustomized set- tingABCD
Page 450 of 484

4508-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
■Parking Support Brake function (for static objects)* ( P.253)
*:If equipped
■Driving position memory* ( P.138)
*:If equipped
■Outside rear view mirrors ( P.146)
■LTA (Lane Tracing Assist)* ( P.218)
FunctionDefault settingCustomized set-
ting
Parking Support Brake func-
tion (for static objects)OnOff—O——
FunctionDefault settingCustomized set-ting
Driver’s seat movement when
exiting the vehicleStandardOffO—O—Partial
Selection the door linking
driving position memory with
door unlock operation
Driver’s doorAll doors——O—
FunctionDefault settingCustomized set-ting
Automatic mirror folding and
extending operationLinked to the
locking/unlock- ing of the doorsOff
——O—Linked to opera-
tion of the power switch
Linked mirror function when
reversingOnOff——O—
FunctionDefault settingCustomized set- ting
Lane centering functionOnOff—O——
Steering assist functionOnOff—O——
Alert typesSteering wheel vibrationBuzzer—O——
Alert sensitivityHighStandard—O——
ABCD
ABCD
ABCD
ABCD