2018 LEXUS NX300h air conditioning

3TABLE OF CONTENTS
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
2
3
4
5
6
7
8
94-1. Before driving
Driving the vehicle ........................ 150
Cargo and luggage ...................... 155
Vehicle load limits ......................... 158
Trailer towing (vehicles with towing
package) ........................................ 159
Trailer towing (vehicles without
towing package) ......................... 167
Dinghy towing ................................ 167
4-2. Driving procedures
Power (ignition) switch ............... 168
EV drive mode ................................ 171
Hybrid transmission ..................... 173
Turn signal lever............................. 176
Parking brake ................................. 177
Brake Hold....................................... 180
ASC (Active Sound Control) ... 181
4-3. Operating the lights and wipers
Headlight switch ............................ 183
Automatic High Beam ................ 186
Fog light switch .............................. 189
Windshield wipers and washer 189
Rear window wiper and washer
............................................................ 194
4-4. Refueling
Opening the fuel tank cap......... 196 4-5. Using the driving support systems
Lexus Safety System+ ................. 198
PCS (Pre-Collision System) ... 203
LDA (Lane Departure Alert with
steering control) ......................... 210
Dynamic radar cruise control with
full-speed range........................... 217
Intuitive parking assist ................. 227
Parking Support Brake function (for
static objects)............................... 232
BSM (Blind Spot Monitor) ......... 241
Driving mode select switch ..... 249
Driving assist systems ................ 250
4-6. Driving tips
Hybrid vehicle driving tips ....... 255
Winter driving tips ....................... 257
Utility vehicle precautions........ 259
5-1. Remote Touch
Remote Touch............................... 264
5-2. Using the air conditioning system
and defogger
Automatic air conditioning system
.......................................................... 268
Heated steering wheel/seat heat-
ers/seat ventilators................... 275
5-3. Using the interior lights
Interior lights list ........................... 278
5-4. Using the storage features
List of storage features ............... 281
Luggage compartment features
.......................................................... 2844
Driving
5
Interior features

4 TABLE OF CONTENTS
LEXUS NX300h Owners Manu-
al_USA_OM78212U 5-5. Using the other interior features
Other interior features .............. 288
Garage door opener.................. 298
Compass.......................................... 303
Lexus Enform Safety Connect 306
Lexus Enform Remote ................. 311
Lexus Enform Service Connect
............................................................ 312
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior .................................... 314
Cleaning and protecting the vehi-
cle interior ..................................... 317
6-2. Maintenance
Maintenance requirements ...... 319
General maintenance ................ 320
Emission inspection and mainte-
nance (I/M) programs ............ 322
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................... 324
Hood.................................................. 325
Positioning a floor jack............... 326
Engine compartment.................. 327
12-volt battery................................ 333
Tires ................................................... 336
Tire inflation pressure ................. 343
Wheels.............................................. 345
Air conditioning filter.................. 346
Electronic key battery ................ 347
Checking and replacing fuses 349
Headlight aim.................................. 351
Light bulbs ....................................... 353 7-1. Essential information
Emergency flashers .................... 358
If your vehicle has to be stopped in
an emergency ............................ 358
7-2. Steps to take in an emergency
If your vehicle needs to be towed
.......................................................... 360
If you think something is wrong
.......................................................... 363
If a warning light turns on or a warn-
ing buzzer sounds..................... 365
If a warning messa ge is displayed
.......................................................... 374
If you have a flat tire .................... 377
If the hybrid syst em will not start
.......................................................... 385
If you lose your keys.................... 386
If the fuel filler door cannot be
opened .......................................... 387
If the electronic key does not oper-
ate properly ................................. 387
If the 12-volt battery is discharged
.......................................................... 390
If your vehicle overheats ........... 394
If the vehicle becomes stuck ... 397
8-1. Specifications
Maintenance data (fuel, oil level,
etc.) ................................................. 40
0
Fuel information ............................ 408
Tire information ............................. 4106
Maintenance and care 7
When trouble arises
8
Vehicle specifications

15Pictorial index
LEXUS NX300h Owners Manu-
al_USA_OM78212U When the warning messages are displayed.......................................................... P.374
Turn signal lever ...................................................................................................... P.176
Headlight switch......................................................................................................P.183
Headlights/parking lights/tail lights/license plate lights/
daytime running lights
............................................................................................................................... .................... P.183
Fog lights ..................................................................................................................... .......... P.189
Windshield wiper and washer switch ...................................................... P.189, 194
Usage.......................................................................................................................... .. P.189, 194
Adding washer fluid ......................................................................................................... P.3 32
Warning messages .......................................................................................................... P.374
Emergency flasher switch .................................................................................. P.358
Hood lock release lever ...................................................................................... P.325
Tilt and telescopic steering control switch *1
................................................... P.139
Adjustment ..................................................................................................................... ...... P.139
Driving position memory *1
............................................................................................. P.134
Tilt and telescopic steeri ng lock release lever *1
............................................ P.139
Adjustment ..................................................................................................................... ...... P.139
Air conditioning system .......................................................................................P.268
Usage.......................................................................................................................... ........... P.268
Rear window defogger................................................................................................... P.269
Audio system *2
*1
: If equipped *2
: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”. E
F
G
H
I
J
K
L

64 1-2. Hybrid system
LEXUS NX300h Owners Manu-
al_USA_OM78212U 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
vehicle with at least enough gasoline to
make the low fuel level warning light 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

166 4-1. Before driving
LEXUS NX300h Owners Manu-
al_USA_OM78212U do not put the transmission in D.
( → P.176)
 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.394)
 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.179)
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.

2494-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_OM78212U 4
Driving
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.
2 Eco modeIn 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.
3 Sport 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.79)■
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. ■
Canceling driving modes ●
Select another driv e 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
drive mode is selected, even if the power
switch is turned off.Driving mode select switch The driving modes can be selected
to suit driving conditions.
Selecting a driving mode

2554-6. Driving tips
LEXUS NX300h Owners Manu-
al_USA_OM78212U 4
Driving 4-6.Driving tips
When using Eco mode, the torque cor-
responding to the accelerator pedal
depression amount can be generated
more smoothly than it is in normal con-
ditions. In addition, the operation of the
air conditioning system (heating/cool-
ing) will be minimized, improving the
fuel economy. ( → P.249)
The Eco-friendly driving is possible by
keeping the indicator needle of Hybrid
System Indicator within Eco area.
( → P.82)
Shift the shift lever to D when stopped
at a traffic light, or driving in heavy traf-
fic, etc. Shift the shift lever to P when
parking. When using the N, there is no
positive effect on fuel consumption. In
the N, the gasoline engine operates
but electricity cannot be generated.
Also, when using the air conditioning
system, etc., the hybrid battery (trac-
tion battery) power is consumed.  Drive your vehicle smoothly. Avoid
abrupt acceleration and decelera-
tion. Gradual acceleration and
deceleration will make more effec-
tive use of the electric motor (trac-
tion motor) without having to use
gasoline engine power.
 Avoid repeated acceleration.
Repeated acceleration consumes
hybrid battery (traction battery)
power, resulting in poor fuel con-
sumption. Battery power can be
restored by driving with the acceler-
ator pedal slightly released.
Make sure to operate the brakes gently
and in a timely manner. A greater
amount of electrical energy can be
regenerated when slowing down.
Repeated acceleration and decelera-
tion, as well as long waits at traffic
lights, will lead to bad fuel economy.
Check traffic reports before leaving
and avoid delays as much as possible.
When driving in a traffic jam, gently
release the brake pedal to allow the
vehicle to move forward slightly while
avoiding overuse of the accelerator
pedal. Doing so can help control
excessive gasoline consumption.Hybrid vehicle driving tips For economical and ecological
driving, pay attention to the follow-
ing points:
Using Eco mode
Use of Hybrid System Indicator
Shift Changing the shift lever
operation Accelerator pedal/brake pedal
operation
When braking
Delays

256 4-6. Driving tips
LEXUS NX300h Owners Manu-
al_USA_OM78212U Control and maintain the vehicle at a
constant speed. Before stopping at a
toll booth or similar, allow plenty of
time to release the accelerator and
gently apply the brakes. A greater
amount of electrical energy can be
regenerated when slowing down.
Use the air conditioning only when
necessary. Doing so can help reduce
excessive gasoline consumption.
In summer: When the ambient tem-
perature is high, use the recirculated
air mode. Doing so will help to reduce
the burden on the air conditioning sys-
tem and reduce fuel consumption as
well.
In winter: Because the gasoline engine
will not automatically cut out until it and
the interior of the vehicle are warm, it
will consume fuel. Also, fuel consump-
tion can be improved by avoiding over-
use of the heater.
Make sure to check the tire inflation
pressure frequently. Improper tire infla-
tion pressure can cause poor fuel
economy.
Also, as snow tires can cause large
amounts of friction, their use on dry
roads can lead to poor fuel economy.
Use tires that are appropriate for the
season. Carrying heavy luggage will lead to
poor fuel economy. Avoid carrying
unnecessary luggage. Installing a large
roof rack will also cause poor fuel
economy.
Since the gasoline engine starts up and
cuts out automatically when cold,
warming up the engine is unnecessary.
Moreover, frequently driving short dis-
tances will cause the engine to repeat-
edly warm up, which can lead to excess
fuel consumption.Highway driving
Air conditioning
Checking tire inflation pressure Luggage
Warming up before driving