2018 LEXUS NX300h lights

3757-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises The warning lights and warning buzzers op erate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer, have
the vehicle inspected by your Lexus dealer immediately.
*
: A buzzer sounds the first time a message is shown on the multi-information display.
■
System warning lights
The master warning light does not come on
or flash in the following cases. Instead, a
separate system warning light will come on
along with a message shown on the multi-
information display.
●
Malfunction of the ABS
The ABS warning light comes on.
( → P.367)
●
Malfunction of the charging system
The charging system warning light comes
on. ( → P.365)
■
If “Hybrid System Overheated Reduced
Output Power” is shown
This message may be displayed when driv-
ing under severe operating conditions. (For example, when driving up a long steep hill.)
Handling method: → P.394■
If “Maintenance required for Traction
battery cooling parts at your dealer” is
shown
The filter may be clogge d, or the air intake
vents or ducts may be blocked. Have the
vehicle inspected by your Lexus dealer.
■
If “Aux Battery Low” is shown
●
When the display goes off after several
seconds *
Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
●
When the display does not go off
Start up the hybrid system using the pro-
cedures for “If the 12-volt battery is dis-Messages and warnings System
warning
light Warning buzzer *
Warning
Comes
on ⎯ Sounds Indicates an important situation, such as
when a system related to driving is malfunc-
tioning or that danger may result if the cor-
rection procedure is not performed
⎯ Comes
on
or flashes Sounds Indicates an important situation, such as
when the systems shown on the multi-infor-
mation display may be malfunctioning
Flashes ⎯ Sounds Indicates a situation, such as when damage
to the vehicle or danger may result
Comes
on ⎯ Does not sound Indicates a condition, such as malfunction of
electrical components, their condition, or
indicates the need for maintenance
Flashes ⎯ Does not sound Indicates a situation, such as when an opera-
tion has been performed incorrectly, or indi-
cates how to perform an operation correctly

3857-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises
One of the following may be the cause
of the problem:
 The electronic key may not be func-
tioning properly. ( → P.387)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( → P.64)
 There may be a malfunction in the
immobilizer system. ( → P.69)
 There may be a malfunction in the
steering lock system.
 The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system.
( → P.385) One of the following may be the cause
of the problem:
 The 12-volt battery may be dis-
charged. ( → P.390)
 The 12-volt battery terminal con-
nections may be lo ose or corroded.
( → P.333)
One of the following may be the cause
of the problem:
 The 12-volt battery may be dis-
charged. ( → P.390)
 One or both of the 12-volt battery
terminals may be disconnected.
( → P.333) Contact your Lexus dealer if the problem
cannot be repaired, or if repair procedures
are unknown.
When the hybrid syst em does not start,
the following steps can be used as an
interim measure to start the hybrid sys-
tem if the power switch is functioning
normally.
Do not use this starting procedure
except in cases of emergency.If the hybrid system will not
start Reasons for the hybrid system not
starting vary depending on the situ-
ation.
Check the following and perform
the appropriate procedure:
The hybrid system will not start
even though the correct starting
procedure is being followed.
( → P.168) The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.
The interior lights and head-
lights do not turn on, or the horn
does not sound.
Starting the hybrid system in an
emergency

392 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
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.
●
The power back door mu st be initialized.
( → P.110) ■
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

404 8-1. Specifications
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
Spark plug
■
12-volt Battery
■
Charging rates
*
: The fluid capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.Ignition system Make DENSO FK16HR-A8
Gap 0.03 in. (0.8 mm)
NOTICE■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system Specific voltage reading
at 68°F (20°C): 12.0 V or higher
If the voltage is lower th an the standard value,
charge the battery.
(After charging the battery, turn on the high beam
headlights for 30 seconds with the power switch
off, and turn the headlights off.)
Quick charge
Slow charge 15 A max.
5 A max.
Hybrid transmission Fluid capacity * 
Front
4.0 qt. (3.8 L, 3.3 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■
Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ultimately damage
the hybrid transmission of your vehicle.

4078-1. Specifications
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8
Vehicle specifications 
Compact spare tire
A: Wedge base bulbs (clear)
B: Wedge base bulbs (amber) *
:If equippedTire size T165/80D17 104M
Spare tire inflation pressure
(Recommended cold tire inflation
pressure) 60 psi (420 kPa, 4.2 kgf/cm 2
or bar)
Wheel size 17 × 4 T
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs Light bulbs Bulb No. W Type
Exterior Front side marker lights (bulb
type) W5W 5 A
Front turn signal lights (bulb
type)* 585
(WY21W) 21 B
Interior Vanity lights ⎯ 8 A

4218-2. Customization
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8
Vehicle specifications ■
Smart access system with push-button start ( → P.122)
■
Wireless remote control ( → P.106)
■
Automatic light control system ( → P.183)Function Default setting Customized set-
ting
The doors that are unlocked
using the smart access sys-
tem with push-button start
can be selected Driver’s door All the doors O — O O
Smart access system with
push-button start On Off — — O —
Number of consecutive door
lock operations 2 times As many as
desired — — O —
Function Default setting Customized set-
ting
Wireless remote control On Off — — 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 function On Off — — O —
The function that validates the
switch of the wireless
remote control when locking
the door ( → P.110) When locking the
door When unlocking
the door — — O —
Function Default setting Customized set-
ting
Light sensor sensitivity Standard -2 to 2 O — O —
Adjust the time elapsed
before the headlights auto-
matically turn off 30 seconds Off
O — O —60 seconds
90 seconds A B C D
A B C D
A B C D

422 8-2. Customization
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
Lights ( → P.183)
■
Illumination ( → P.278)
■
Multi-information display ( → P.79, 85)Function Default setting Customized set-
ting
Daytime Running Lights
(Daytime running lights can
be disabled) On Off O — O —
Function Default setting Customized set-
ting
Time elapsed before the inte-
rior lights turn off 15 seconds Off
O — O —7.5 seconds
30 seconds
Time elapsed before the exte-
rior lights turn off 15 seconds Off
O — O —7.5 seconds
30 seconds
Operation after the power
switch is turned off On Off — — O —
Operation when the doors
are unlocked On Off — — O —
Operation when you
approach the vehicle with the
electronic key on your person On Off — — O —
Footwell lighting On Off — — O —
Fading out of the outer foot
lights when they turn off Long Short — — O —
Function Default setting Customized set-
ting
Changeover to tachometer
when sport mode is selected Auto Hybrid system
indicator (always)
— O — —
Tachometer
(always)
EV indicator On Off — O — — A B C D
A B C D
A B C D

4258-2. Customization
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8
Vehicle specifications ■
Turn signal lever ( → P.176)
■
Intuitive parking assist *
( → P.227)*
:If equipped ■
Driving position memory *
( → P.134)
*
:If equipped Function Default setting Customized set-
ting
The number of times the turn
signal lights flash automati-
cally when the turn signal
lever is moved to the first
position during a lane change 3 4
— — O —5
6
7
Off
Function Default setting Customized set-
ting
Display setting (When intui-
tive parking assist is operat-
ing) On Off — O O —
Buzzer volume 2 1
— O O —
3
Function Default setting Customized set-
ting
Driver’s seat movement when
exiting the vehicle Standard Off
O — O —
Partial
Selection the door linking
driving position memory with
door unlock operation Driver’s door All doors — — O — A B C D
A B C D
A B C D