
5878-2. Steps to take in an emergency
8
When trouble arises
NX300h_U_OM78007U ■
If you have a flat front tire on a road covered with snow or ice (vehicles with a compact
spare tire and excluding the 225/60R18 tires)
Install the compact spare tire on one of the rear wheels of the vehicle. Perform the follow-
ing steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehicle.
Fit tire chains to the front tires.
WA R N I N G ■
When using the compact spare tire (Vehicle with 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 stan dard 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 accid ent 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. 1
2
3
• 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)

588 8-2. Steps to take in an emergency
NX300h_U_OM78007U NOTICE ■
Be careful when driving over bumps with the compact spare tire installed on the vehi-
cle
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard ti res. Be careful when driving over uneven road surfaces.■
Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.■
When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and trans-
mitter, contact your Lexus dealer as the tire pressure warning valve and transmitter
may be damaged if not handled correctly.

616 9-1. Specifications
NX300h_U_OM78007U
Compact spare tire Ti r e s i z e T165/80D17 104M
Spare tire inflation pressure
(Recommended cold tire
inflation pressure) 60 psi (420 kPa, 4.2 kgf/cm 2
or bar)
Wheel size 17 4 T
Wheel nut torque 76 f t •
lbf (103 N •
m, 10.5 kgf •
m)

6219-1. Specifications
9
Vehicle specifications
NX300h_U_OM78007UTire information
Full-size tire
Compact spare tireTy p i c a l t i r e s y m b o l s

622 9-1. Specifications
NX300h_U_OM78007U Ti r e s i z e ( P. 6 2 4 )
DOT and Tire Identification Number (TIN) ( P. 6 2 3 )
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 5 )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 design ed for temporary emergency use only.1
2
3
4
5
6
7
8
9
10
11

661What to do if... (Troubleshooting)
NX300h_U_OM78007U ●
Stop the vehicle in a safe place and replace the flat tire with the spare tire.
( P. 5 7 5 )●
Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
( P. 6 0 4 )When a problem has occurred If you have a flat tire
The vehicle becomes stuck

675Alphabetical index
NX300h_U_OM78007U Side mirrors ..............................................163
Adjusting 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 ...................... 140
Antenna location ................................. 140
Entry functions ............................ 124, 129
Starting the hybrid system .............. 201
Warning message ............................. 572
Snow tires ................................................ 326
Spare tire
Inflation pressure ................................. 616
Storage location .................................576
Spark plug .................................................613
Specifications .........................................608
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 ....... 604 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
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

677Alphabetical index
NX300h_U_OM78007U Tires..............................................................516
Chains...................................................... 327
Checking................................................. 516
Glossary ................................................. 627
If you have a flat tire ..........................575
Inflation pressure .....................525, 615
Replacing ...............................................575
Rotating tires ......................................... 516
Size ............................................................. 615
Snow tires ..............................................326
Spare tire ..................................... 575, 616
Tire identification number..............623
Tire pressure warning system ...... 517
Uniform Tire Quality Grading ....625
Warning light .......................................567
Tools........................................................... 576
Top tether strap........................................ 73
Total load capacity ...............................608
Towing
Dinghy towing .................................... 200
Emergency towing........................... 558
Towing eyelet........................................ 561
Trailer towing ..............................187, 199
TRAC (Traction Control) .................305
Trailer towing .................................187, 199 Transmission
Hybrid transmission .........................208
Selecting a driving mode...............303
Trip meters.................................................. 97
Turn signal lights
Replacing light
bulbs ............................ 545, 547, 552
Turn signal lever ................................... 212
Wattage ................................................... 617
USB memory .......................................... 377
USB port .................................................. 345
Vanity lights
Vanity lights ..........................................455
Wattage ................................................... 617
Vanity mirrors........................................ 455
Vanity lights ..........................................455
Vehicle data recordings......................... 10
Vehicle identification number ........ 609
Vehicle Stability Control (VSC) .... 305
Voice command system.....................423
VSC (Vehicle Stability Control) .... 305 U
V