light LEXUS NX300h 2015 Owners Manual

5978-2. Steps to take in an emergency
8
When trouble arises
NX300h_U_OM78007U Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of your vehicle with the power switch off.
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator light does not
come on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Close the exclusive jump starting terminal cover, and reinstall the fuse box
cover to its original position.
Once the hybrid system starts, have th e 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 system while the hybrid system is off. ●
Turn off any unnecessary electrical components 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 discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, 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 mechanical 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 dis-
charged, be especially careful when reconnecting the 12-volt battery. ●
The power back door must be initialized. (  P. 1 3 4 )●
Make sure that the key is not inside the vehicle when recharging or replacing the
12-volt battery. The key may be locked in the vehicle if the alarm is activated. (  P. 88)5
6
7
8
9
10

598 8-2. Steps to take in an emergency
NX300h_U_OM78007U ■
When exchanging the 12-volt battery ●
Use a Central Degassing type 12-volt battery (European Regulations). Also, use 12-volt
batteries with case si zes similar to one prior the exchange and an equivalent 20 hour
rate capacity (20HR) 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 following items to the exhaust hole of the 12-volt
battery.
For details, consult your Lexus dealer. • 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 vehicle.
• 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 bat-
tery to be exchanged, the exhaust hole may
be plugged.)
WA R N I N G ■
Avoiding 12-volt battery fires or explosions
Observe the following precautions to preven t accidentally igniting the flammable gas
that may be emitted from the 12-volt battery: ●
Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.●
Do not allow the other end of the jumper cable connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal. ●
Do not allow the + and - clamps of the jump er cables to come in to contact with each
other. ●
Do not smoke, use matches, cigarette lighters or allow open flame near the 12-volt
battery. Exhaust hole
Exhaust
hole plug
Exhaust hoseHole section
of the vehicle
Exhaust hole

6139-1. Specifications
9
Vehicle specifications
NX300h_U_OM78007U * : The coolant capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.Cooling system Capacity
* Gasoline
engine 
Vehicles without towing package
7.7 qt. (7.3 L, 6.4 Imp.qt.) 
Vehicles with towing package
7.1 qt. (6.7 L, 5.9 Imp.qt.)
Po w e r
control unit 3.3 qt. (3.1 L, 2.7 Imp.qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system (spark plug) 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 12-volt battery
Open voltage at 68  F (20  C): 12.6 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates 5 A max.

6179-1. Specifications
9
Vehicle specifications
NX300h_U_OM78007U Light bulbs Light bulbs Bulb No. W Ty p e
Exterior Headlights
High beam (halogen bulbs)
* 9005 60 A
Front side marker lights
* W5W 5 C
Front turn signal lights (bulb
type)
* 585
(WY21W) 21 B
Rear turn signal lights 585
(WY21W) 21 B
Back-up lights 921
(W16W) 16 C
Interior Vanity lights  8 C
Luggage compartment light  5 D
A: HB3 halogen bulbs
B: Wedge base bulbs (amber) C: Wedge base bulbs (clear)
D: Double end bulbs
* : If equipped

6199-1. Specifications
9
Vehicle specifications
NX300h_U_OM78007U ■
Recommendation of the use of cleaner burning gasoline
Cleaner burning gasoline, including reformul ated gasoline that contains oxygenates
such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is ava ilable in many areas.
Lexus recommends the use of cleaner bu rning gasoline and appropriately blended
reformulated gasoline. These types of gaso line provide excellent vehicle performance,
reduce vehicle emissions and improve air quality. ■
Non-recommendation of the use of blended gasoline
●
If you use gasohol in your vehicle, be sure th at it has an octane rating no lower than 87.●
Lexus does not recommend the use of gasoline containing methanol.■
Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT
(Methylcyclopentadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasolin e that contains MMT. If fuel containing
MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instru ment cluster may come on. If this happens,
contact your Lexus dealer for service. ■
If your engine knocks ●
Consult your Lexus dealer. ●
You may occasionally notice light knocking fo r a short time while accelerating or driv-
ing uphill. This is normal and there is no need for concern. ●
Use only gasoline containing up to 15% etha-
nol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol, includ-
ing from any pump labeled E30, E50, E85
(which are only some examples of fuel con-
taining more than 15% ethanol). DO NOT use gasoline
containing more than
15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

630 9-1. Specifications
NX300h_U_OM78007U Intended outboard sidewall (a) The sidewall that contains a whitewall, bears white
lettering, or bears manufacturer, brand, and/or
model name molding that is higher or deeper than
the same molding on the other sidewall of the tire, or
(b) The outward facing sidewall of an asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle
Light truck (LT) tire A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipurpose
passenger vehicles
Load rating The maximum load that a tire is rated to carry for a given
inflation pressure
Maximum load rating The load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible infla-
tion pressure The maximum cold inflation pressure to which a tire may
be inflated
Measuring rim The rim on which a tire is fitted for physical dimension
requirements
Open splice Any parting at any junction of tread, sidewall, or inner-
liner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of the side-
walls of an inflated tire, incl uding elevations due to label-
ing, decorations, or pr otective bands or ribs
Passenger car tire A tire intended for use on passenger cars, multipurpose
passenger vehicles, and trucks, that have a gross vehicle
weight rating (GVWR) of 10,000 lb. or less.
Ply A layer of rubber-coated parallel cords
Ply separation A parting of rubber compou nd between adjacent pliesTire related term Meaning

636 9-2. Customization
NX300h_U_OM78007U ■
Wireless remote control (  P. 1 2 4 )
■
Automatic light control system (  P. 2 1 9 )
■
Lights ( 
P. 2 1 9 ) Function Default
setting Customized
setting
Wireless remote control On Off – – O –
Unlocking operation Driver’s door
unlocked in first
step, all doors
unlocked in
second 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. 1 2 9 ) When locking
the door When unlock-
ing the door ––O– 1 2 3 4
Function Default
setting Customized
setting
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 1 2 3 4
Function Default
setting Customized
setting
Daytime Running Lights
(Daytime running lights can
be disabled) On Off O – O – 1 2 3 4

6379-2. Customization
9
Vehicle specifications
NX300h_U_OM78007U ■
Illumination (  P. 443)Function Default
setting Customized
setting
Time elapsed before the inte-
rior lights turn off 15 seconds Off
O–O–7. 5 s e c o n d s
30 seconds
Time elapsed before the exte-
rior lights turn off 15 seconds Off
O – O –7. 5 s e c o n d s
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 – 1 2 3 4

660 What to do if... (Troubleshooting)
NX300h_U_OM78007U ●
The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (  P. 5 6 7 )●
The parking brake indicator is on
Is the parking brake released? (  P. 2 1 3 )
Depending on the situation, other type s of warning buzzer may also sound.
(  P. 5 6 5 , 5 7 2 ) ●
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (  P. 8 8 )
To stop the alarm, turn the power switch to ON mode or start the hybrid system.●
Is the message displayed on the multi-information display?
Check the message on the multi-information display. (  P. 5 7 2 )●
When a warning light turns on or a warning message is displayed, refer to
P. 5 6 5 , 5 7 2 . A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

662 Alphabetical index
NX300h_U_OM78007UAlphabetical index A/C ............................................................ 430
Air conditioning filter....................... 530
Automatic air conditioning
system ................................................. 430
Micro dust and pollen filter ...........436
ABS (Anti-lock Brake System).......305
Function ................................................. 305
Warning light ...................................... 566
Active Sound Control (ASC) .......... 218
Air conditioning filter ..........................530
Air conditioning system ..................... 430
Air conditioning filter....................... 530
Automatic air conditioning
system ................................................. 430
Micro dust and pollen filter ...........436
S-FLOW mode .................................. 432
Airbags ........................................................ 40
Airbag operating conditions ...........48
Airbag precautions for your
child .......................................................... 43
Airbag warning light ........................ 566
Correct driving posture ....................30
Curtain shield airbag
operating conditions........................48
Curtain shield airbag
precautions ........................................... 46
Front passenger occupant
classification system ......................... 53
General airbag precautions............ 43 Locations of airbags............................ 40
Modification and disposal of
airbags .....................................................47
Seat cushion airbag ............................. 40
Side airbag operating
conditions ............................................. 48
Side airbag precautions .................... 45
Side and curtain shield airbags
operating conditions ....................... 48
Side and curtain shield airbags
precautions .......................................... 46
SRS airbag instructions
for Canadian owners ................... 649
SRS airbags ............................................. 40
Alarm ........................................................... 88
Alarm ..........................................................88
Warning buzzer.................................569
Anchor brackets................................ 71, 73
Antenna
Radio ........................................................ 364
Smart access system
with push-button start....................140
Anti-lock brake system (ABS)........ 305
Function ..................................................305
Warning light .......................................566
Approach warning ................... 245, 259
Armrest .................................................... 465
ASC (Active Sound Control) ........... 218
Assist grips .............................................. 465A