air conditioning LEXUS NX300h 2021 Owners Manual

3TABLE OF CONTENTS
LEXUS NX300h Owners Manual_USA_M78578_en
1
2
3
4
5
6
7
8
9
4-1. Before driving
Driving the vehicle ........................ 156
Cargo and luggage ....................... 161
Vehicle load limits ......................... 164
Trailer towing (vehicles with towing package) ........................................ 165
Trailer towing (vehicles without towing package) ......................... 173
Dinghy towing ................................ 173
4-2. Driving procedures Power (ignition) switch ............... 174
EV drive mode ............................... 178
Hybrid transmission ..................... 180
Turn signal lever............................. 183
Parking brake ................................. 184
Brake Hold....................................... 187
ASC (Active Sound Control) .. 188
4-3. Operating the lights and wipers Headlight switch ............................ 190
Automatic High Beam ................ 193
Fog light switch .............................. 196
Windshield wipers and washer 196
Rear window wiper and washer ............................................................ 201
4-4. Refueling Opening the fuel tank cap........ 2034-5. Using the driving support systems
Lexus Safety System + 2.0....... 205
PCS (Pre-Collision System) ...... 211
LTA (Lane Tracing Assist) ........ 218
LDA (Lane Departure Alert with steering control) ......................... 227
RSA (Road Sign Assist)............. 235
Dynamic radar cruise control with full-speed range......................... 237
PKSA (Parking Support Alert) 247
Intuitive parking assist ................ 248
Parking Support Brake function (for static objects).............................. 253
BSM (Blind Spot Monitor) ........262
Driving mode select switch ..... 270
Driving assist systems ................. 272
4-6. Driving tips Hybrid vehicle driving tips ........ 277
Winter driving tips ....................... 279
Utility vehicle precautions........ 282
5-1. Remote Touch Remote Touch............................... 286
5-2. Using the air conditioning system and defogger
Automatic air conditioning system............................................................ 291
Heated steering wheel/seat heat- ers/seat ventilators................... 299
5-3. Using the interior lights Interior lights list ........................... 302
5-4. Using the storage features List of storage features .............. 305
4Driving
5Interior features

4TABLE OF CONTENTS
LEXUS NX300h Owners Manual_USA_M78578_en
Luggage compartment features
........................................................... 308
5-5. Using the other interior features Other interior features ............... 312
Garage door opener.................. 322
Compass.......................................... 328
6-1. Maintenance and care Cleaning and protecting the vehi-cle exterior ................................... 332
Cleaning and protecting the vehi- cle interior .................................... 335
6-2. Maintenance Maintenance requirements ..... 339
General maintenance ................ 340
Emission inspection and mainte- nance (I/M) programs ............ 342
6-3. Do-it-yourself maintenance Do-it-yourself service precautions........................................................... 344
Hood.................................................. 346
Positioning a floor jack............... 346
Engine compartment.................. 348
12-volt battery................................ 354
Tires ................................................... 357
Tire inflation pressure ................. 365
Wheels.............................................. 367
Air conditioning filter..................368
Electronic key battery ................ 369
Checking and replacing fuses . 371
Headlight aim................................. 373
Light bulbs ....................................... 3757-1. Essential information
Emergency flashers .................... 380
If your vehicle has to be stopped in an emergency ............................ 380
If the vehicle is trapped in rising water ............................................... 381
7-2. Steps to take in an emergency If your vehicle needs to be towed.......................................................... 383
If you think something is wrong .......................................................... 386
If a warning light turns on or a warn- ing buzzer sounds..................... 388
If a warning messa ge is displayed
.......................................................... 398
If you have a flat tire .................... 402
If the hybrid syst em will not start
.......................................................... 409
If you lose your keys....................... 411
If the fuel filler door cannot be opened ............................................. 411
If the electronic key does not oper- ate properly ................................... 412
If the 12-volt battery is discharged ............................................................ 414
If your vehicle overheats ............ 418
If the vehicle becomes stuck ..... 421
8-1. Specifications Maintenance data (fuel, oil level, etc.) .................................................. 424
Fuel information .

........................... 432
Tire information ............................ 434
6Maintenance and care
7When trouble arises
8Vehicle specifications

16Pictorial index
LEXUS NX300h Owners Manual_USA_M78578_en
When the warning messages are displayed..........................................................P.398
Turn signal lever ......................................................................................................P.183
Headlight switch......................................................................................................P.190
Headlights/parking lights/tail lights/license plate lig hts/daytime running lights
............................................................................................................................... .................... P.190
Fog lights ..................................................................................................................... .......... P.196
Windshield wiper and washer switch ...................................................... P.196, 201
Usage.......................................................................................................................... .. P.196, 201
Adding washer fluid .........................................................................................................P.3 53
Warning messages ..........................................................................................................P.398
Emergency flasher switch .................................................................................. P.380
Hood lock release lever .......................................................................................P.346
Tilt and telescopic steering control switch
*1................................................... P.143
Adjustment ..................................................................................................................... ...... P.143
Driving position memory
*1............................................................................................. P.138
Tilt and telescopic steeri ng lock release lever
*1............................................ P.143
Adjustment ..................................................................................................................... ...... P.143
Air conditioning system ........................................................................................ P.291
Usage.......................................................................................................................................P.291
Rear window defogger................................................................................................... P.292
Audio system
*2
*1
: If equipped
*2: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
E
F
G
H
I
J
K
L

701-4. Hybrid system
LEXUS NX300h Owners Manual_USA_M78578_en
The illustration is an example for explanation and may differ from the actual item.
Warning label
Hybrid battery (traction battery)
Rear electric motor (traction motor)
Service plug
High voltage cables (orange)
Front electric motor (traction motor)
Power control unit
Air conditioning compressor
■Running out of fuel
When the vehicle has run out of fuel and the
hybrid system cannot be started, refuel the
Hybrid system precautions
Take care when handling the hybrid sy
stem, as it is a high voltage system
(about 650 V at maximum) as well as contains parts that become extremely
hot when the hybrid system is operating. Obey the warning labels attached to
the vehicle.
System components
A
B
C
D
E
F
G
H

1724-1. Before driving
LEXUS NX300h Owners Manual_USA_M78578_en
do not put the transmission in D.
( P.180)
 Instability happens more frequently
when descending steep or long
downhill grades. Before descend-
ing, slow down and downshift. Do
not make sudden downshifts while
descending steep or long downhill
grades.
 Avoid holding the brake pedal down
too long or applying the brakes too
frequently. This could cause the
brakes to overheat and result in
reduced braking efficiency.
 Due to the added load of the trailer,
your vehicle’s engine may overheat
on hot days (at temperatures over
85°F [30°C]) when driving up a
long or steep grade. If the engine
coolant temperature gauge indi-
cates overheating, immediately turn
off the air conditioning (if in use),
pull your vehicle off the road and
stop in a safe spot. ( P.418)
 Always place wheel blocks under
both the vehicle’s and the trailer’s
wheels when parking. Put the trans-
mission in P and apply the parking
brake. Avoid parking on a slope, but
if unavoidable, do so only after per-
forming the following:
1 Apply the brakes and keep them
applied.
2 Have someone place wheel blocks
under both the vehicle’s and trailer’s
wheels. 3
When the wheel blocks are in
place, release the brakes slowly
until the blocks absorb the load.
4 Shift into P and apply the parking
brake.
5 Turn off the hybrid system.
 When restarting after parking on a
slope:
1 With the transmission in P, start the
hybrid system. Be sure to keep the
brake pedal depressed.
2 Shift into a forward gear. If revers-
ing, shift into R.
3 If the parking brake is in manual
mode, release the parking brake.
(P.185)
4 Release the brake pedal, and slowly
pull or back away from the wheel
blocks. Stop and apply the brakes.
5 Have someone retrieve the blocks.

2104-5. Using the driving support systems
LEXUS NX300h Owners Manual_USA_M78578_en
●In the following situations, if the situation has changed (or the vehicle has been driven for
some time) and the normal operating conditio ns are detected, the message will disappear
and the system will become operational.
If the message does not disappea r, contact your Lexus dealer.
• When the temperature around the radar sensor is outside of the operational range, such as when the vehicle is in the sun or in an extremely cold environment
• When the front camera cannot detect objects in front of the vehicle, such as when driving
in the dark, snow, or fog, or when brig ht lights are shining into the front camera
When the temperature around the front
camera is outside of th e operational range,
such as when the vehicle is in the sun or in an
extremely cold environment
If the front camera is hot, such as after the
vehicle had been parked in the sun, use the
air conditioning system to decrease the tem-
perature around the front camera.
If a sunshade was used when the vehicle was
parked, depending on its type, the sunlight
reflected from the surface of the sunshade
may cause the temperature of the front cam-
era to become excessively high.
If the front camera is cold, such after the
vehicle is parked in an extremely cold envi-
ronment, use the air conditioning system to
increase the temperature around the front
camera.
The area in front of the front camera is
obstructed, such as when the hood is open
or a sticker is attached to the part of the
windshield in front of the front camera.
Close the hood, remove the sticker, etc. to
clear the obstruction.
SituationActions

2504-5. Using the driving support systems
LEXUS NX300h Owners Manual_USA_M78578_en
Lexus dealer.
■Sensor detectio
n information
●The sensor’s detection areas are limited
to the areas around the vehicle’s bumper.
●Certain vehicle conditions and the sur-
rounding environment may affect the
ability of a sensor to correctly detect an
obstacle. Particular instances where this
may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve this
problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is
frozen the screen may show an abnormal
display, or obstacles may not be
detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines, air
brakes of large vehicles, or other loud
noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender
pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• A backlit license plate, license plate holder, etc., are installed.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is
not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low- ered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are
instances in which, because of their shape,
signs and other objects may be judged by a
sensor to be closer than they are.
●The shape of the obstacle may prevent a
sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections pro- jecting outwards in the direction of your
vehicle
●The following situations may occur
during use.
• Depending on the shape of the obstacle
and other factors, the detection distance
may shorten, or detection may be impos-
sible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between
obstacle detection and display. Even at
slow speeds, there is a possibility that the
obstacle will come within the sensor’s
detection areas befo re the display is
shown and the buzzer sounds.
• Thin posts or object s lower than the sen-
sor may not be detected when
approached, even if they have been
detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow
noise of the air conditioning system.
■Customization
Some functions can be customized.
(Customizable features: P.443)
WARNING
■When using the intuitive parking
assist
Observe the following precautions.
Failure to do so may result in the vehicle
being unable to be driven safely and pos-
sibly cause an accident.
●Do not use the sensor at speeds in
excess of 6 mph (10 km/h).

2704-5. Using the driving support systems
LEXUS NX300h Owners Manual_USA_M78578_en
Vehicles without Adaptive Variable
Suspension System
1 Normal mode
For normal driving.
Press the switch to change the driving
mode to Normal mode when selected to
Eco mode or Sport mode.
2Eco mode
In contrast to Normal mode when stepping
on the accelerator pedal, torque genera-
tion becomes slower, air conditioning
operations (heating/cooling) are
restrained, and driving is suited for
improved fuel consumption.
When not in Eco mode and the driving
mode select switch is turned to the left,
WARNING
■Cautions regarding the use of the sys-
tem
The driver is solely responsible for safe
driving. Always driv e safely, taking care
to observe your surroundings.
The Rear Cross Traffic Alert function is
only an assist and is not a replacement for
careful driving. Driver must be careful
when backing up, even when using Rear
Cross Traffic Alert function. The driver’s
own visual confirmation of behind you
and your vehicle is necessary and be sure
there are no pedestrians, other vehicles,
etc., before backing up. Failure to do so
could cause death or serious injury.
According to conditions, the system may
not function correctly. Therefore the
driver’s own visual confirmation of safety
is necessary.
Driving mode select switch
The driving modes can be selected
to suit driving conditions.
Selecting a driving mode

2714-5. Using the driving support systems
LEXUS NX300h Owners Manual_USA_M78578_en
4
Driving
“Eco” indicator will be shown on the multi-
information display.
3Sport mode
Assists acceleration response by con-
trolling the hybrid system and steering.
Suitable for when precise handling is desir-
able, for example when driving on moun-
tain roads.
When not in Sport mode and the driving
mode select switch is turned to the right,
“Sport” indicator will be shown on the
multi-information display and the hybrid
system indicator changes to the tachome-
ter. ( P.84)
Vehicles with Adaptive Variable
Suspension System
1 Normal/Custom mode
Press the switch and select Normal mode
or Custom mode. Each time the switch is
pressed, the system changes between
Normal mode and Custom mode. When
Custom mode is selected, the “Custom”
indicator comes on.
When in Eco mode or Sport mode, when
the switch is pressed, the system returns to Normal mode. Press th
e switch to change
the driving mode to Normal mode when
selected to Eco mode or Sport mode.
Custom mode can be setup on the naviga-
tion system or multimedia system screen.
• Normal mode
Suitable when driving in the city, for good
fuel consumption efficiency, silence, and
drive-ability.
• Custom mode
Driving is possible by setting the desired
function for power train control, chassis
control or air conditioning operations.
Custom mode settings can only be
changed using the Remote Touch.
(  P.286)
2 Eco mode
In contrast to Normal mode when stepping
on the accelerator pedal, torque genera-
tion becomes slower, air conditioning
operations (heating/cooling) are
restrained, and driving is suited for
improved fuel consumption.
When not in Eco mode and the driving
mode select switch is turned to the left,
“Eco” indicator will be shown on the multi-
information display.
3Sport mode
• Sport S mode
Assists acceleration response by con-
trolling the hybrid system and transmission.
Suitable for when powe rful acceleration is
desirable.
When not in Sport S mode and the driving
mode select switch is turned to the right,
“Sport S” indicator will be shown on the
multi-information display.
•Sport S+ mode
Helps to ensure superior vehicle stability
by simultaneously cont rolling the steering
and suspension in addi tion to the hybrid
system and transmission. Suitable for
sporty driving.

2724-5. Using the driving support systems
LEXUS NX300h Owners Manual_USA_M78578_en
When in Sport S mode and the driving
mode select switch is turned to the right,
“Sport S+” indicator will be shown on the
multi-information display.
■Operation of the air conditioning sys-
tem in Eco mode
Eco mode controls the heating/cooling
operations and fan speed of the air condi-
tioning system to enhance fuel efficiency. To
improve air conditio ning performance,
adjust the fan speed or turn off Eco mode.
■When canceling Eco mode/Sport mode
●Select another driving mode. Also, Sport
mode will be canceled automatically
when the power switch is turned off.
●Normal mode and Eco mode will not be
canceled automatically until another driv-
ing mode is selected, even if the power
switch is turned off.
■Operating the ASC (Active Sound
Control)
If the ASC is ON, an electronic sound plays
when the Sport S+ mode is selected.
■Customization
The Custom mode can be changed. (Cus-
tomizable features: P.443)
■ECB (Electronically Controlled
Brake System)
The electronically controlled system
generates braking force correspond-
ing to the brake operation
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface
■Brake assist
Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving sudden ly or turning on
slippery road surfaces.
■Enhanced VSC (Enhanced Vehi-
cle Stability Control)
Provides cooperative control of the
ABS, TRAC, VSC and EPS.
Driving assist systems
To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be aware,
however, that these systems are
supplementary and should not be
relied upon too heavily when oper-
ating the vehicle.
Summary of the driving assist
systems