reset LEXUS NX300 2020 User Guide

3266-2. Maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
6-2.Maintenance
■Repair and replacement
It is recommended that genuine Lexus parts
be used for repairs to ensure performance
of each system. If non-Lexus parts are used
in replacement or if a repair shop other than
a Lexus dealer perfor ms repairs, confirm
the warranty coverage.
■Allow inspection and repairs to be per-
formed by a Lexus dealer
●Lexus technicians are well-trained spe-
cialists and are kept up to date with the
latest service information. They are well
informed about the operation of all sys-
tems on your vehicle.
●Keep a copy of the repa ir order. It proves
that the maintenance that has been per-
formed is under warra nty coverage. If any
problem should arise while your vehicle is
under warranty, your Lexus dealer will
promptly take care of it.
General maintenance should be per-
formed on a daily basis. This can be
done by yourself or by a Lexus dealer.
Scheduled maintenance should be
performed at specified intervals
according to the maintenance sched-
ule.
For details about ma intenance items and
schedules, refer to the “Warranty and Ser-
vice Guide”, “Owner’s Manual Supple-
ment” or “Scheduled Maintenance”.
■Resetting the message indicating main-
tenance is required (U.S.A. only)
After the required maintenance is pre-
formed according to the maintenance
schedule, please reset the message.
To reset the message, follow the procedures
described below:
1
Press or of the meter control
switches and select .
Maintenance requirements
To ensure safe and economical driv-
ing, day-to-day care and regular
maintenance are essential. It is the
owner’s responsibility to perform
regular checks. Lexus recommends
the following maintenance:
WARNING
■If your vehicle is not properly main-
tained
Improper maintenanc e could result in
serious damage to the vehicle and possi-
ble death or serious injury.
■Handling of the battery
●Engine exhaust, some of its constitu-
ents, and a wide variety of automobile
components contain or emit chemicals
known to the State of California to
cause cancer and birth defects and
other reproductive harm. Work in a
well ventilated area.
●Oils, fuels and fluids contained in vehi-
cles as well as waste produced by
component wear contain or emit
chemicals known to the State of Cali-
fornia to cause cancer and birth
defects or other reproductive harm.
Avoid exposure and wash any affected
area immediately.
●Battery posts, terminals and related
accessories contain lead and lead
compounds which are known to cause
brain damage. Wash your hands after
handling. ( P.340)
General maintenance
Scheduled maintenance

3276-2. Maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
6
Maintenance and care
2Press or of the meter control
switches, select the “Vehicle Settings”
and then press .
3
Press or of the meter control
switches, select the “Scheduled Mainte-
nance” and then press and hold the .
4
Select the “Yes” and push .
“The Data Has Been Reset” is displayed
on the multi-information display.
You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage.
The use of Lexus repair manuals is recom-
mended.
For details about warranty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.
Do-it-yourself maintenance
General maintenance
Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice.
WARNING
■If the engine is running
Turn the engine off and ensure that there
is adequate ventilati on before perform-
ing maintenance checks.
Engine compartment
ItemsCheck points
BatteryCheck the connections.
(  P.340)
Brake fluid
Is the brake fluid at the
correct level?
( P.340)
Engine/inter-
cooler coolantIs the engine/intercooler
coolant at the correct
level? ( P.338)
Engine oilIs the engine oil at the
correct level? ( P.336)
Exhaust system
There should not be any
fumes or strange
sounds.

3376-3. Do-it-yourself maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
6
Maintenance and care
5Holding a rag under the end, pull
the dipstick out and check the oil
level.
Low
Normal
Excessive
Measuring side
6 Wipe the dipstick and reinsert it
fully.
■Checking the oil type and prepar-
ing the items needed
Make sure to check the oil type and
prepare the items needed before add-
ing oil.
 Engine oil selection
P.410
 Oil quantity (Low  Full)
1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items
Clean funnel
■Adding engine oil
If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine. 1
Remove the oil filler cap by turning
it counterclockwise.
2 Add engine oil slowly, checking the
dipstick.
3 Install the oil filler cap by turning it
clockwise.
■Engine oil consumption
A certain amount of engine oil will be con-
sumed while driving. In the following situa-
tions, oil consumption may increase, and
engine oil may need to be refilled in
between oil maintenance intervals.
●When the engine is new, for example
directly after purchasing the vehicle or
after replacing the engine
●If low quality oil or oil of an inappropriate
viscosity is used
●When driving at high engine speeds or
with a heavy load, when towing, or when
driving while accelerating or decelerat-
ing frequently
●When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
■After changing the engine oil
The engine oil maintenance data should be
reset. Perform the following procedures:
1 Press or of the meter control
switches and select .
A
B
C
D

3386-3. Do-it-yourself maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
2
Press or of the meter control
switches, select the “Vehicle Settings”
and then press .
3
Press or of the meter control
switches, select the “Oil Maintenance”
and then press and hold the .
4
Select the “Yes” and push .
“The Data Has Been Reset” is displayed
on the multi-information display.
The coolant level is satisfactory if it is
between the “FULL” and “LOW” lines
on the reservoir when the engine is
cold.
■Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(  P.403)
WARNING
■Used engine oil
●Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as inflamma-
tion and skin cancer, so care should be
taken to avoid prolonged and
repeated contact. To remove used
engine oil from your skin, wash thor-
oughly with soap and water.
●Dispose of used oil and filters only in a
safe and acceptable manner. Do not
dispose of used oil and filters in house-
hold trash, in sewers or onto the
ground. Call your Lexus dealer, ser-
vice station or auto parts store for
information concerning recycling or
disposal.
●Do not leave used engine oil within the
reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the
vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick
every time you refill the vehicle.
●Be sure the engine o il filler cap is prop-
erly tightened.
Checking the engine coolant
A
B
C

3506-3. Do-it-yourself maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
4Press or of the meter con-
trol switches and select .
5
Press or of the meter con-
trol switches, select the “Vehicle
Settings” and then press .
6
Press or of the meter con-
trol switches, select the “TPMS”
and then press and hold the .
The “Tire Pressure Recalibrating. Please
Wait Until Complete” will be displayed on
the multi-information display and the tire
pressure warning light will blink slowly 3
times.
When the message disappears, initializa-
tion is complete.
■Initializing the tire pressure warning sys-
tem
Initialize the system with the tire inflation
pressure adjusted to the specified level
■The initialization operation
●Make sure to carry out initialization after
adjusting the tire inflation pressure. Also,
make sure the tires are cold before carry-
ing out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the engine
switch off during initialization, it is not
necessary to press the reset switch again
as initialization will restart automatically
when the engine switch has been turned
to IGNITION ON mode for the next time.
●If you accidentally press the reset switch
when initialization is not necessary, adjust
the tire inflation pressure to the specified
level when the tires are cold, and conduct
initialization again.
■Warning performance of the tire pres-
sure warning system
The warning of the tire pressure warning
system will change in accordance with the
conditions under which it was initialized. For
this reason, the system may give a warning
even if the tire pressure does not reach a
low enough level, or if the pressure is higher
than the pressure that was adjusted to when
the system was initialized.
■When initialization of the tire pressure
warning system has failed
Initialization can be completed in a few min-
utes. However, in the following cases, the
settings have not been recorded and the
system will not operate properly. If repeated
attempts to record tire inflation pressure
settings are unsuccessf ul, have the vehicle
inspected by your Lexus dealer.
●When initializing the tire pressure warn-
ing system, the tire pr essure warning light
does not blink 3 times.
●After carrying out the initialization proce-
dure, the tire pressure warning light
blinks for 1 minute then stays on after
driving for 20 minutes.
The tire pressure warning valve and
transmitter is equipped with a unique
WARNING
■When initializing the tire pressure
warning system
Do not initializing tire inflation pressure
without first adjusting the tire inflation
pressure to the spec ified level. Other-
wise, the tire pressure warning light may
not come on even if the tire inflation pres-
sure is low, or it may come on when the
tire inflation pressure is actually normal.
Registering ID codes

3867-2. Steps to take in an emergency
LEXUS NX300 Owners Manual_USA_M78389_en
speed range
■If “Radar Cruise Control Unavailable
See Owner’s Manual” is shown
The dynamic radar cruise control with full-
speed range system is suspended tempo-
rarily or until the problem shown in the mes-
sage is resolved. (causes and coping
methods: P.197)
■If “Radar Cruise Control Unavailable” is
shown
The dynamic radar cruise control with full-
speed range system cannot be used tempo-
rarily. Use the system when it becomes
available again.
■If “Oil Maintenance Required Soon” is
shown
Indicates that the engine oil is scheduled to
be changed. (The indicator will not work
properly unless the oil maintenance data
has been reset.)
Check the engine oil, and change if neces-
sary. After changing the engine oil, the oil
change system shou ld be reset. (P.337)
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be
changed. (After the engine oil is changed
and the oil maintenance data has been
reset.)
Check and change the en gine oil, and oil fil-
ter by your Lexus deal er. After changing the
engine oil, the oil change system should be
reset. ( P.337)
■If “See Owner’s Manual” is shown
●If the following messages are shown, fol-
lowing the instructions, accordingly.
• “Engine Coolant Temp High” ( P.403)
●If the following messages are shown,
there may be a malfunction.
Immediately have the vehicle inspected
by your Lexus dealer.
• “Braking Power Low”
• “Smart Access System Malfunction”
●If the following messages are shown,
there may be a malfunction.
Immediately stop the vehicle in a safe
place and contact your Lexus dealer.
Continuing to drive the vehicle may be
dangerous.
• “Oil Pressure Low” • “Charging System Malfunction”
• “Transmission Fluid Temp High”
■Warning buzzer
 P.382
NOTICE
■“High Power Consumption Partial
Limit On AC/Heater Operation” is
frequently shown
There is a possible malfunction relating
to the charging system or the battery
may be deteriorating. Have the vehicle
inspected by your Lexus dealer.

3937-2. Steps to take in an emergency
LEXUS NX300 Owners Manual_USA_M78389_en
7
When trouble arises
4Lower the vehicle.
5
Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.
Tightening torque:
76 ft· lbf (103 N· m, 10.5 kgf· m)
6Stow the flat tire, tire jack and all
tools.
■The compact spare tire
●The compact spare tire is identified by the
label “TEMPORARY USE ONLY” on
the tire sidewall.
Use the compact spare tire temporarily,
and only in an emergency.
●Make sure to check the tire inflation pres-
sure of the compact spare tire. ( P.413)
■After completing the tire change
The tire pressure warning system must be
reset. ( P.349)
■When using the compact spare tire
As the compact spare tire is not equipped
with a tire pressure warning valve and trans-
mitter, low inflation pressure of the spare
tire will not be indicated by the tire pressure warning system. Also, if you replace the
compact spare tire afte
r the tire pressure
warning light comes on, the light remains
on.
■When the compact spare tire is
equipped
The vehicle becomes lower when driving
with the compact spare tire compared to
when driving with standard tires.
■If you have a flat front tire on a road cov-
ered with snow or ice
Install the compact spare tire on one of the
rear wheels of the vehicle. Perform the fol-
lowing steps and fit tire chains to the front
tires:
1
Replace a rear tire with the compact
spare tire.
2
Replace the flat front tire with the tire
removed from the rear of the vehicle.
3
Fit tire chains to the front tires.
WARNING
■When using the compact spare tire
●Remember that the sp are tire provided
is specifically designed for use with
your vehicle. Do not use your spare
tire on another vehicle.
●Do not use more than one spare tire
simultaneously.
●Replace the spare tire with a standard
tire as soon as possible.
●Avoid sudden acceleration, abrupt
steering, sudden br aking and shifting
operations that cause sudden engine
braking.

4318-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
*1: The default setting varies according to countries.
*2: Some status screens cannot be registered (i ndicated on the multi-information display)
*3: 2 of the following items: current fuel consumption, average fuel economy (after reset),
average fuel economy (after refuel), average fuel economy (after start), average vehicle
speed (after reset), average vehicle speed (a fter start), distance (driving range), dis-
tance (after start), elapsed time (after reset), elapsed time (after start), blank
*4: Intersection guidance, Incomi ng calls, Adjust brightness
Units*1miles (MPG US)
miles
(MPG Imperial)
OO——km (L/100 km)
km (km/L)
switch settingsDrive information 1Desired status
screen
*2—O——
Drive information 1
Current fuel con- sumption
*3—O——Average fuel con-sumption (after reset)
Drive information 2
Distance (range)
*3—O——Average speed (after reset)
Drive information 3
Average fuel con-sumption (after refuel)
*3—O——
Elapsed time (after start)
Pop-up display*4OnOff—O——
Accent colorColor 1Color 2OO——
Clock24-hour display12-hour display—O——
FunctionDefault settingCustomized set- tingABCD

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index463
Rear turn signal lights
Replacing light bulbs................................ 362
Turn signal lever ........................................... 172
Rear view mirror Inside rear view mirror..............................134
Outside rear view mirrors ......................136
Rear window defogger .............................280
Rear window wiper...................................... 189
Refueling ............................................................ 191 Capacity .........................................................409
Fuel types.......................................................409
Opening the fuel tank cap ....................... 191
When the fuel filler door cannot be opened ........................................................ 397
Remote Touch ...............................................274
Replacing Electronic key battery..............................356
Fuses ............................................................... 358
Light bulbs..................................................... 362
Tires .................................................................. 387
Reporting safety defects for U.S. owners .......................................................................... 440
Resetting the message indicating mainte- nance is required ...................................... 326
RSA (Road Sign Assist) ............................ 223
S
S-FLOW mode ............................................ 284
Safety Connect.................................................. 61
Seat belts............................................................ 26 Adjusting the seat belt shoulder anchor height............................................................... 30
Automatic Locking Retractor ................ 28
Child restraint system installation ......... 48
Cleaning and maintaining the seat belt ......................................................................... 323 Emergency Locking Retractor .............. 28
How to wear your seat belt ..................... 27
How your child should wear the seat belt
............................................................................. 27
Pregnant women, proper seat belt use ............................................................................. 26
Reminder light and buzzer ...... 379, 380
Seat belt extender......................................... 27
Seat belt instructions for Canadian own- ers .................................................................. 440
Seat belt pretensioners ..............................30
SRS warning light....................................... 376
Seat heaters ................................................... 287
Seat position memory..................................128
Seat ventilators .............................................288
Seating capacity.............................................154
Seats Adjustment ............................................122, 123
Adjustment precautions .................122, 124
Child seats/child restraint system installa-tion ....................................................................48
Cleaning ......................................................... 323
Driving position memory ........................ 128
Folding down the rear seatbacks ........124
Front seat heaters ......................................287
Head restraint ................................................. 131
Power easy access system .................... 128
Properly sitting in the seat ........................ 25
Rear seat heaters ....................................... 287
Seat position memory .............................. 128
Seat ventilators ........................................... 288
Sécurité de l’enfant Précautions avec les coussins gonflables.......................................................................... 444

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index465
Outside rear view mirror switches .....136
Paddle shift switches ..................................170
Parking brake switch ................................. 172
PCS switch .....................................................201
Power back door opener and closer
switch..............................................................107
Power window switch .............................. 138
Rear window and outside rear view mir- ror defoggers switch ............................280
Rear window wiper and washer switch .......................................................................... 189
Seat heater switches ................................ 287
“SOS” button .................................................... 61
Tire pressure warning reset switch .. 349
Vehicle-to-vehicle distance switch .. 225
VSC off switch .............................................. 261
Window lock switch ..................................139
Windshield wipers and washer switch ................................................................184, 189
T
Tachometer........................................................79
Tail lights Light switch .....................................................178
Replacing light bulbs................................ 362
Theft deterrent system Alarm .................................................................. 70
Engine immobilizer system ..................... 68
Tire inflation pressure Maintenance data........................................413
Warning light .............................................. 380
Tire information ............................................. 418 Glossary......................................................... 422
Size.................................................................... 420
Tire identification number .......................419
Uniform Tire Quality Grading.............. 421 Tire pressure warning system
Function ..........................................................345
Initializing........................................................349
Installing tire pres sure warning valves
and transmitters...................................... 348
Registering ID codes .............................. 350
Tire pressure warning reset switch...349
Warning light .............................................. 380
Tires................................................................... 343 Chains ............................................................. 267
Checking .......................................................343
Glossary ......................................................... 422
If you have a flat tire ..................................387
Inflation pressure ............................... 351, 413
Replacing .......................................................343
Rotating tires ................................................344
Size ......................................................................413
Snow tires ......................................................266
Spare tire ............................................. 387, 413
Tire identification number....................... 419
Tire pressure warning system .............345
Uniform Tire Quality Grading ..............421
Warning light .............................................. 380
Tools..................................................................388
Top tether strap............................................... 58
Total load capacity ......................................408
Towing Dinghy towing .............................................. 164
Emergency towing................................... 369
Towing eyelet............................................... 372
Trailer Sway Control............................... 260
Trailer towing ......................................155, 163
TRAC (Traction Control) ........................ 260