5167-3. Do-it-yourself maintenance
NX300h_OM_USA_OM78082U
Tires
Check if the treadwear indicators are showing on the tires. Also check the tires
for uneven wear, such as excessive wear on one side of the tread.
Check the spare tire condition and pressure if not rotated. New tread
Wo r n t r e a d
Treadwear indicator
The location of treadwear indicat ors is shown by the “TWI” or “” marks, etc., molded
into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tires.
Rotate the tires in the order shown.
To equalize tire wear and extend tire life,
Lexus recommends that tire rotation is
carried out at the same interval as tire
inspection.
Do not fail to initialize the tire pressure
warning system after tire rotation.
Replace or rotate tires in accordance with maintenance schedules and tread-
wear.
Checking tires
Tire rotation
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Front
5698-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
■When the tire pressure warning light comes on
Inspect the appearance of the tire to check that the tire is not punctured.
If the tire is punctured: P. 5 7 5
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire infla-
tion pressure is at the specified level and carry out initialization. ( P. 5 1 8 )
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
Vehicles with a compact spare tire: The comp act spare tire is not equipped with a tire
pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light
will not turn off even though the flat tire ha s been replaced with the spare tire. Replace
the spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure
warning light will go off after a few minutes.
Vehicles with a full-size spare tire: The spare tire is also equipped with a tire pressure
warning valve and transmitter. The tire pressure warning light will turn on if the tire infla-
tion pressure of the spare tire is low. If a tire goes flat, the tire pressure warning light will
not turn off even though the flat tire has been replaced with the spare tire. Replace the
spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure
warning light will go off after a few minutes.
■Conditions that the tire pressure warning system may not function properly
P. 5 2 1
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
power switch is turned to ON mode, ha ve it checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
5768-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
Location of the spare tire, jack and tools
Jack handle
Wheel nut wrench
Towing eyeletSpare tire
Jack
Screwdriver1
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3
4
5
6
5868-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
WA R N I N G
■When using the compact spare tire
●Remember that the spare tire provided is specifically designed for use with your vehi-
cle. 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, deceleration and braking, as well as sharp cornering.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
●E-Four (if equipped)
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is
installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe
this precaution may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
• ABS & Brake assist
•VSC
•TRAC
•Cruise control
• Dynamic radar cruise control (if equipped)
• Pre-collision system (if equipped)
•EPS • AVS (if equipped)
• LDA (Lane Departure Alert)
(if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• BSM (Blind spot monitor)
(if equipped)
• Automatic high Beam (if equipped)
6209-1. Specifications
NX300h_OM_USA_OM78082U
Ti r e s i z e ( P. 6 2 2 )
DOT and Tire Identification Number (TIN) ( P. 6 2 1 )
Location of treadwear indicators (P. 5 1 6 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel co rds. Cords are the strands which form the
plies in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply
tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire
has a tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure (P. 5 2 0 )
Maximum cold tire inflation pressure ( P. 6 1 3 )
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( P. 5 2 0 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer
tire.
“TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded
on its sidewall. This tire is desi gned for temporary emergency use only.
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674Alphabetical index
NX300h_OM_USA_OM78082U
Side mirrors ..............................................163Adjusting and folding........................ 163
Blind Spot Monitor (BSM)............. 316
Heaters....................................................435
Side turn signal lights Replacing light bulbs ....................... 552
Turn signal lever ................................... 212
Smart access system with push-button start ...................... 140Antenna location ................................. 140
Entry functions ............................ 124, 129
Starting the hybrid system .............. 201
Warning message ............................. 572
Snow tires ................................................ 326
Spare tire Inflation pressure ................................. 614
Storage location .................................576
Spark plug .................................................. 611
Specifications ......................................... 606
Speedometer .............................................97
Sport mode ............................................. 303
Steering wheel Adjustment ............................................. 160
Audio switches .................................... 342
Heated steering wheel ................... 440
Power easy access system ............ 154
Telephone switches ..........................402
Stop lights Replacing light bulbs ....................... 552
Storage feature ..................................... 446
Storage precautions............................ 446
Stuck If the vehicle becomes stuck ....... 603 Sunglass holder......................................449
Sun visors................................................. 455
Switch
ASC (Active Sound Control) dial ...........................................................218
Audio remote control switches .............................................. 342
Automatic High Beam switch ..... 223
Brake hold switch................................ 216
BSM (Blind Spot Monitor) main switch..........................................316
Cruise control switch ........................... 240, 253, 267
Door lock switch.................................. 126
Driving mode select switch ..........303
Driving position memory switches ................................................154
Emergency flashers switch ...........556
EV drive mode switch .................... 206
Fog light switch ....................................227
Garage door opener switches .............................................. 467
Heated steering wheel ................... 440
HUD (Head-up display) switches ............................................... 106
Ignition switch........................................201
Intuitive parking assist switch....... 279
LDA switch ........................................... 270
Light switches ........................................ 219
Meter control switches .................... 103
Moon roof switches ...........................169
Outside rear view mirror switches ................................................163