2020 LEXUS NX300 engine

4168-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
■Gasoline quality
In very few cases, driveability problems may
be caused by the brand of gasoline you are
using. If driveability problems persist, try
changing the brand of gasoline. If this does
not correct the problem, consult your Lexus
dealer.
■Recommendation of the use of gasoline
containing detergent additives
●Lexus recommends the use of gasoline
that contains detergent additives to avoid
the build-up of engine deposits.
●All gasoline sold in the U.S.A. contains
minimum detergent additives to clean
and/or keep clean intake systems, per
EPA’s lowest additive s concentration pro-
gram.
●Lexus strongly recommends the use of
Top Tier Detergent Gasoline. For more
information on Top Tier Detergent Gaso-
line and a list of marketers, please go to
the official websit e www.toptiergas.com.
■Recommendation of the use of low
emissions gasoline
Gasolines containing oxygenates such as
ethers and ethanol, as well as reformulated
gasolines, are available in some cities.
These fuels are typically acceptable for use, providing they meet other fuel require-
ments.
Lexus recommends these fuels, since the
formulations allow for reduced vehicle
emissions.
■Non-recommendation of the use of
blended gasoline
●Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from
any pump labeled
E30 (30% ethanol ), E50 (50% etha-
nol ), E85 (85% ethanol ) (which
are only some examples of fuel contain-
ing more than 15% ethanol).
●If you use gasohol in your vehicle, be sure
that it has an octane rating no lower than
91.
●Lexus does not recommend the use of
gasoline containing methanol.
■Non-recommendation of the use of gas-
oline containing MMT
Some gasoline contains an octane enhanc-
ing additive called MMT (Methylcyclopen-
tadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gas-
oline that contains MMT. If fuel containing
MMT is used, your emission control system
may be adversely affected.
The malfunction indicator lamp on the
instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knock-
ing for a short time wh ile accelerating or
driving uphill. This is normal and there is
Fuel information
You must only use unleaded gaso-
line in your vehicle.
Select premium unleaded gasoline
with an octane rating of 91
(Research Octane Number 96) or
higher required for optimum
engine performance and fuel econ-
omy. If the octane ra ting is less than
91,damage to the engine may occur
and may void the vehicle warranty.
At minimum, the gasoline you use
should meet the specifications of
ASTM D4814 in the U.S.A.
A
BC

4178-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
no need for concern.
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper
fuels are used, the engine will be dam-
aged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to
your vehicle’s three-way catalytic con-
verters causing the emission control sys-
tem to malfunction.
●Do not use gasohol other than the type
previously stated.
Other gasohol may cause fuel system
damage or vehicle performance prob-
lems.
●Using unleaded gasoline with an
octane number or rating lower than
the level previously stated will cause
persistent he avy knocking.
At worst, this will lead to engine dam-
age.
■Fuel-related poor driveability
If poor driveability (poor hot starting,
vaporization, engine knocking, etc.) is
encountered after using a different type
of fuel, discontinue the use of that type of
fuel.
■When refueling with gasohol
Take care not to spill gasohol. It can dam-
age your vehicle’s paint.

4228-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related
termMeaning
Cold tire infla-
tion pressure
Tire pressure when the
vehicle has been parked
for three hours or more, or
has not been driven more
than 1 mile or 1.5 km under
that condition
Maximum
inflation pres-
sureThe maximum cold inflated
pressure to which a tire
may be inflated, shown on
the sidewall of the tire
Recom-
mended infla-
tion pressureCold tire inflation pressure
recommended by a manu-
facturer
Accessory
weight
The combined weight (in
excess of thos e standard
items which may be
replaced) of transmission,
power steering, power
brakes, power windows,
power seats, radio and
heater, to the extent that
these items are available as
factory-installed equip-
ment (whether installed or
not)
Curb weight
The weight of a motor
vehicle with standard
equipment, including the
maximum capacity of fuel,
oil and coolant, and if so
equipped, air conditioning
and additional weight
optional engine
Maximum
loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options
weight
Normal occu-
pant weight
150 lb. (68 kg) times the
number of occupants
specified in the second
column of Table 1
* that fol-
lows
Occupant
distribution
Distribution of occupants
in a vehicle as specified in
the third column of Table 1
*
below
Production
options
weight
The combined weight of
installed regu lar produc-
tion options weighing over
5 lb. (2.3 kg) in excess of
the standard items which
they replace, not previ-
ously considered in curb
weight or accessory
weight, including heavy
duty brakes, ride levelers,
roof rack, heavy duty bat-
tery, and special trim
Rim
A metal support for a tire
or a tire and tube assembly
upon which the tire beads
are seated
Rim diameter
(Wheel diam-
eter)Nominal diameter of the
bead seat
Rim size des-
ignationRim diameter and width
Tire related termMeaning

4278-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
8-2.Customization
When customizing vehicle features,
ensure that the vehicle is parked in a
safe place with the shift lever in P and
the parking brake set.
■Changing using the Remote Touch
1
Press the “MENU” button on the
Remote Touch.
2
Select on the menu screen and
select “Vehicle”.
3
Select “Vehicle Customization” or
“Drive mode customization”.
Various setting can be changed. Refer
to the list of settings that can be
changed for details.
■Changing using the multi-informa-
tion display
1
Press or of the meter con-
trol switches and select .
2
Press or of the meter con-
trol switches, select the item, and
then press .
3
Press or of the meter con-
trol switches, select the desired set-
ting, and then press .
To go back to the previous screen or
exit the customize mode, press .
Some function settings are changed simultaneously with other functions being cus-
tomized. Contact your Lexus dealer. Settings that can be changed using the Remote Touch
Settings that can be changed us ing the multi-information display
Customizable features
Your vehicle includes a variety of
electronic features that can be per-
sonalized to suit your preferences.
The settings of these features can
be changed using the multi-infor-
mation display, the Remote Touch,
or at your Lexus dealer.
Customizing vehicle features
WARNING
■Cautions during customization
As the engine needs to be running
during customization, ensure that the
vehicle is parked in a place with ade-
quate ventilation. In a closed area such as
a garage, exhaust gases including harm-
ful carbon monoxide (CO) may collect
and enter the vehicle. This may lead to
death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that
the engine is running while customizing
features.
Customizable features
A
B

4308-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
■Lights (P.178)
■Illumination ( P.289)
■Multi-information display ( P.79, 82)
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 engine
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
Eco Driving Indicator LightOnOff—O——
Language*1EnglishFrenchOO——Spanish
ABCD
ABCD
ABCD

4348-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
■Parking Support Brake function (for static objects)* ( P.241)
*:If equipped
■Driving position memory* ( P.128)
*:If equipped
■Outside rear view mirrors ( P.136)
■LTA (Lane Tracing Assist)* ( P.206)
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 engine 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

4378-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
■Driving mode select switch ( P.258)
■Eco mode (P.258)
■Vehicle customization
●When the speed linked d oor locking function and shift po sition linked door locking func-
tion are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, all the doors will be locked.
• If the vehicle is started with all the doors locked, the speed linked door locking function
would not operate.
• If the vehicle is started with any door unlock ed, the speed linked door locking function will
operate.
●When the smart access system with push-button start is off, smart door unlocking cannot
be customized.
●When the doors remain closed after unlock ing the doors and the automatic door lock
function is activat ed, the signals will be generated in accordance with the Operation sig-
nal (buzzer) and the Operation sign al (emergency flashers) settings.
■In the following situations, customize mode in which the settings can be changed
through the multi-information display will automatically be turned off.
●A warning message appears after the cu stomize mode screen is displayed.
●The engine switch is turned off.
●The vehicle begins to move while the customize mode screen is displayed.
FunctionDefault settingCustomized set-
ting
Powertrain control in custom
modeNormalPowerO———Eco
Chassis control in custom
modeNormalSportO———
Air conditioning operation in
custom modeNormalEcoO———
FunctionDefault settingCustomized set-ting
Heating/coolin g operation
minimized in Eco modeOnOff——O—
ABCD
ABCD

452What to do if... (Troubleshooting)
LEXUS NX300 Owners Manual_USA_M78389_en
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.396)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.396)
 Is the electronic key battery weak or
depleted? ( P.356)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.166)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.118)
 Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set. Open the rear door from
outside and then unlock the child-
protector lock. ( P.103)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.165)
 Is the shift lever in P? ( P.165)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.116)
 Is the steering wheel unlocked?
( P.165)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be
started in a temporary way.
( P.398)
 Is the battery discharged?
( P.400)If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not oper-
ate properly
The doors cannot be locked or
unlocked
The rear door cannot be opened
If you think something is wrong
The engine does not start