2021 LEXUS NX300h air conditioning

4197-2. Steps to take in an emergency
LEXUS NX300h Owners Manual_USA_M78578_en
7
When trouble arises
and radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
6
Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fans oper-
ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fans are oper-
ating by checking the fan sound and air
flow. If it is difficult to check these, turn the
air conditioning system on and off repeat-
edly.
(The fans may not oper ate in freezing tem-
peratures.)
7 If the fans are not operating:
Stop the hybrid system immediately
and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the
nearest Lexus dealer.
8 Check if “Engine Coolant Temp
High” is shown on the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact
your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.
A
B
A
B
C

4388-1. Specifications
LEXUS NX300h Owners Manual_USA_M78578_en
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related
termMeaning
Cold tire
inflation
pressure
Tire pressure when the vehi-
cle 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
pressureThe maximum cold inflated
pressure to which a tire may
be inflated, shown on the
sidewall of the tire
Recom-
mended
inflation
pressureCold tire inflation pressure
recommended by a manu-
facturer
Accessory
weight
The combined weight (in
excess of those 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 equipment
(whether installed or not)
Curb weight
The weight of a motor vehi-
cle with standard equip-
ment, 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
occupant
weight150 lb. (68 kg) times the
number of occupants speci-
fied in the second column of
Table 1
* that follows
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 regular production
options weighing over 5 lb.
(2.3 kg) in excess of the
standard items which they
replace, not previously con-
sidered in curb weight or
accessory weight, including
heavy duty brakes, ride lev-
elers, roof rack, heavy duty
12-volt battery, and special
trim
Rim
A metal support for a tire or
a tire and tube assembly
upon which the tire beads
are seated
Rim diame-
ter
(Wheel
diameter)
Nominal diameter of the
bead seat
Rim size des-
ignationRim diameter and width
Tire related termMeaning

4488-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
■Head-up display* ( P.95)
*:If equipped
■Automatic air conditioning system ( P.291)
■Eco mode ( P.270)
■Power windows ( P.148)
FunctionDefault settingCustomized set-
ting
Route guidance to destina-
tionOnOff———O
Driving assist system informa-
tionOnOff———O
Audio system operation sta-
tusOnOff———O
Lane displayOnOff———O
FunctionDefault settingCustomized set-ting
Switching between outside
air and recirculated air mode
linked to “AUTO” switch
operation
OnOffO—O—
A/C Auto switch operationOnOffO—O—
FunctionDefault settingCustomized set-ting
Heating/coolin g operation
minimized in Eco modeOnOff——O—
FunctionDefault settingCustomized set- ting
Mechanical key linked opera-
tionOffOn——O—
Wireless remote control
linked open operationOffOn——O—
ABCD
ABCD
ABCD
ABCD

4538-2. Customization
LEXUS NX300h Owners Manual_USA_M78578_en
8
Vehicle specifications
■Driving mode select switch ( P.270)
■Vehicle customization
●When the speed linked door 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 power 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———
ABCD

LEXUS NX300h Owners Manual_USA_M78578_en
471Alphabetical Index
Alphabetical Index
A
A/C .....................................................................291
Air conditioning filter ...............................368
Automatic air conditioning system ..... 291
Micro dust and pollen filter................... 297
S-FLOW mode.......................................... 296
ABS (Anti-lock Brake System)...............272 Function ...........................................................272
Warning light ...............................................390
Active Sound Control (ASC) ................. 188
Adaptive Variable Suspension system (AVS) ............................................................ 273
AFS (Adaptive Front-lighting System) .192
Air conditioning filter ................................. 368
Air conditioning system ..............................291 Air conditioning filter ...............................368
Automatic air conditioning system ..... 291
Micro dust and pollen filter................... 297
S-FLOW mode.......................................... 296
Airbags ............................................................... 32 Airbag operating conditions................... 34
Airbag precautions for your child .........37
Airbag warning light ................................390
Correct driving posture ............................ 25
Curtain shield airbag operating condi-tions .................................................................. 34
Curtain shield airbag precautions ........37
Front passenger occupant classification system ............................................................... 41
General airbag precautions ....................37
Locations of airbags.....................................32
Modification and disposal of airbags . 40
Seat cushion airbag ......................................32
Side airbag operating conditions ......... 34
Side airbag precautions .............................37
Side and curtain shield airbags operating conditions...................................................... 34
Side and curtain shield airbags precau- tions ...................................................................37
SRS airbag instruct ions for Canadian
owners .........................................................458 SRS airbags...................................................... 32
SRS warning light...................................... 390
Alarm .................................................................... 77 Alarm....................................................................77
Warning buzzer ........................................ 388
Anchor brackets ..................................... 55, 57
Antenna (Smart access system with push- button start) ..................................................126
Anti-lock brake system (ABS) ................272 Function .......................................................... 272
Warning light .............................................. 390
Approach warning...................................... 243
Armrest..............................................................321
ASC (Active Sound Control) ................. 188
Assist grips .......................................................321
Automatic air conditioning system Air conditioning filter............................... 368
Automatic air conditioning system .....291
Micro dust and pollen filter ................... 297
S-FLOW mode ..........................................296
Automatic headlight leveling system ..... 191
Automatic High Beam ................................193
Automatic light control system................. 191
Auxiliary box.................................................. 307
B
Back door .......................................................... 114 Wireless remote control ........................... 117
Back-up lights Replacing light bulb ..................................375
Battery (12-volt battery) If the 12-volt battery is discharged ......414
Preparing and checking before winter.......................................................................... 279
Replacing ........................................................ 416
Warning light .............................................. 388
Battery (traction batter y) ............................ 70
Blind Spot Monitor (BSM)....................... 262 Blind Spot Monitor function .................265
Rear Cross Traffic Alert function ....... 267
Bottle holders ................................................ 306
Brake

LEXUS NX300h Owners Manual_USA_M78578_en
Alphabetical Index475
Replacing light bulbs................................ 376
Wattage............................................................ 431
Front turn signal lights Replacing light bulbs.................... 375, 376
Turn signal lever .......................................... 183
Wattage............................................................ 431
Fuel Capacity ......................................................... 425
Fuel gauge ....................................................... 84
Gas station information..........................484
Information .................................................... 432
Refueling ........................................................ 203
Type.................................................................. 425
Warning light ............................................... 393
Fuel filler door ............................................... 203 Refueling ........................................................ 203
When the fuel filler door cannot be opened ............................................................411
Fuses ................................................................... 371
G
Garage door opener ................................. 322
Gas station information ............................ 484
Gauges ............................................................... 84
Glove box ....................................................... 306
Glove box light ............................................. 306
Grocery bag hooks .................................... 309
H
Head restraints ................................................ 141
Head-up display.............................................. 95
Headlights ....................................................... 190 Automatic headlight leveling .................. 191
Automatic High Beam ..............................193
Light switch .................................................... 190
Replacing light bulbs................................ 375
Heated steering wheel ..............................300
Heaters Automatic air conditioning system ..... 291
Heated steering wheel............................ 299
Outside rear view mirrors .................... 292 Seat heaters ................................................. 300
High mounted stoplight Replacing light bulb ..................................375
Hill-start assist control ............................... 273
Hood ................................................................. 346 Open................................................................346
Hooks Cargo hooks............................................... 308
Retaining hooks (floor mat) ..................... 24
Horn ....................................................................144
Hybrid battery (traction battery) Location ............................................................. 70
Specification ................................................. 426
Hybrid battery air vent ..................................72
Hybrid system ...................................................67 Acoustic vehicle alerting system...........69
Emergency shut off system...................... 73
Energy monitor/consumption screen99
EV drive mode............................................. 178
High voltage components ....................... 70
Hybrid System Indicator ........................... 87
Hybrid system precautions...................... 70
Hybrid vehicle driving tips .................... 277
If the hybrid system will not start ....... 409
Overheating .................................................. 418
Power switch..................................................174
Regenerative braking .................................68
Starting the hybrid system .......................174
Warning lights ............................................ 388
Hybrid System Indicator......................84, 87
Hybrid transmission..................................... 180
I
I/M test ............................................................ 342
Identification Engine..............................................................425
Vehicle ............................................................ 424
Ignition switch (Power switch) ................. 174
Illuminated entry system ........................... 302
Immobilizer system........................................ 75
Indicators ........................................................... 82