change wheel LEXUS NX300h 2018 User Guide

2174-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_OM78212U 4
Driving For how to change settings, refer to P.419.
DisplaySteering control
function Turn steering wheel
assistance on and off
Vehicle sway warn-
ing function Turn function on and
off
Adjust alert sensitiv-
ityFunction Setting details
Dynamic radar cruise con-
trol with full-speed range In vehicle-to-vehicle distance con-
trol mode, the ve hicle automati-
cally accelerates, decelerates and
stops to match the speed changes
of the preceding vehicle even if the
accelerator pedal is not depressed.
In constant speed control mode,
the vehicle runs at a fixed speed.
Use the dynamic radar cruise con-
trol with full-speed range on free-
ways and highways.
 Vehicle-to-vehicle distance con-
trol mode ( → P.219)
 Constant speed control mode
( → P.224)
System Components
A

260 4-6. Driving tips
LEXUS NX300h Owners Manu-
al_USA_OM78212U Your vehicle is not designed to be
driven off-road. However, in the event
that off-road driving cannot be
avoided, please observe the following
precautions to help avoid the areas
prohibited to vehicles.
 Drive your vehicle only in areas
where off-road vehicles are permit-
ted to travel.
 Respect private property. Get
owner’s permission before entering
private property.
 Do not enter areas that are closed. Honor gates, barriers and signs that
restrict travel.
 Stay on established roads. When
conditions are wet, driving tech-
niques should be changed or travel
delayed to prevent damage to
roads.
 Avoid driving on very steep, slippery
roads and other surfaces, such as
sand, where the tires are liable to
lose traction. Your vehicle may not
perform as well as conventional
AWD on-road vehicles on these
surfaces. ■
Additional informatio n for off-road driv-
ing 
For owners in U.S. mainland, Hawaii and
Puerto Rico:
To obtain additional information pertaining
to driving your vehicle off-road, consult the
following organizations. ●
State and Local Parks and Recreation
Departments ●
State Motor Vehicle Bureau ●
Recreational Vehicle Clubs ●
U.S. Forest Service and Bureau of Land
ManagementWARNING●
Avoid sharp turns or abrupt maneu-
vers, if at all possible.
Failure to operate this vehicle correctly
may result in loss of control or vehicle
rollover causing death or serious
injury.●
Loading cargo on the roof luggage
carrier (if equipped ) will make the cen-
ter of the vehicle gravity higher. Avoid
high speeds, sudden starts, sharp
turns, sudden braking or abrupt
maneuvers, otherwise it may result in
loss of control or vehicle rollover due
to failure to operate this vehicle cor-
rectly.●
Always slow down in gusty crosswinds.
Because of its profile and higher cen-
ter of gravity, your vehicle is more sen-
sitive to side winds than an ordinary
passenger car. Slowing down will allow
you to have better control.●
Do not drive horizontally across steep
slopes. Driving straig ht up or straight
down is preferred. Your vehicle (or any
similar off-road vehicle) can tip over
sideways much more easily than for-
ward or backward.
Off-road driving WARNING
■
Off-road driving precautions
Always observe the following precau-
tions to minimize the risk of death or seri-
ous injury or damage to your vehicle:
●
Drive carefully when off the road. Do
not take unnecessary risks by driving in
dangerous places.
●
Do not grip the steering wheel spokes
when driving off-road. A bad bump
could jerk the wheel and injure your
hands. Keep both hands and especially
your thumbs on the outside of the rim.

276 5-2. Using the air conditio ning system and defogger
LEXUS NX300h Owners Manu-
al_USA_OM78212U Turns the heated steering wheel on/off The indicator light comes on when the
heated steering wheel is operating.
■
Operation condition
The power switch is in ON mode. ■
Timer function
The heated steering wheel will automati-
cally turn off after about 30 minutes.
■
Front 
Vehicles without seat ventilators
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit) → Mid (2 segments
lit) → Lo (1 segment lit) → OffThe level indicator (amber) light up
during operation. 
Vehicles with seat ventilators
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit) → Mid (2 segments
lit) → Lo (1 segment lit) → OffThe indicator (amber) and level indicator
(green) light up during operation.
■
Rear (if equipped)
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit) → Mid (2 segments
lit) → Lo (1 segment lit) → Off
The level indicator (amber) lights up
during operation.Heated steering wheel
Seat heaters
A A
A

3416-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care pressure warning valves and transmit-
ters must also be installed.
When new tire pressure warning
valves and transmitte rs are installed,
new ID codes must be registered in the
tire pressure warning computer and
the tire pressure warning system must
be initialized. Have tire pressure warn-
ing valve and transmitter ID codes reg-
istered by your Lexus dealer.
( → P.343) ■
When replacing the tires and wheels
If the ID code of the tire pressure warning
valve and transmitter is not registered, the
tire pressure warning system will not work
properly. After driving for about 20 min-
utes, the tire pressure warning light blinks
for 1 minute and stays on to indicate a sys-
tem malfunction. ■
The tire pressure warning system
must be initialized in the following
circumstances:
 When adjusting the tire inflation
pressure
 When the tire inflation pressure is
changed such as when changing
traveling speed.
 When rotating the tires
 When changing the tire.
When the tire pressure warning system
is initialized, the current tire inflation
pressure is set as the benchmark pres-
sure. ■
How to initialize the tire pressure
warning system
1 Park the vehicle in a safe place and
turn the power switch off. Initialization cannot be performed while
the vehicle is moving.
2 Adjust the tire inflation pressure to
the specified cold tire inflation pres-
sure level.
Make sure to adjust the tire pressure to the NOTICE■
Repairing or replacing tires, wheels,
tire pressure warning valves, trans-
mitters and tire valve caps●
When removing or fitting the wheels,
tires or the tire pressure warning
valves and transmitters, contact your
Lexus dealer as the tire pressure warn-
ing valves and transmitters may be
damaged if not handled correctly.
●
Make sure to install the tire valve caps.
If the tire valve caps are not installed,
water could enter the tire pressure
warning valves and the tire pressure
warning valves could be bound.
●
When replacing tire valve caps, do not
use tire valve caps other than those
specified. The cap may become stuck. ■
To avoid damage to the tire pressure
warning valves and transmitters
When a tire is repaired with liquid seal-
ants, the tire pressure warning valve and
transmitter may not operate properly. If a
liquid sealant is used , contact your Lexus
dealer or other qualified service shop as
soon as possible. After use of liquid seal-
ant, make sure to re place the tire pres-
sure warning valve and transmitter when
repairing or replacing the tire. ( → P.338,
345)
Initializing the tire pressure
warning system

3637-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises 3 Insert the towing eyelet into the
hole and tighten partially by hand.
4 Tighten down the towing eyelet
securely using a wheel nut wrench.
5 Securely attach cables or chains to
the towing eyelet.Take care not to damage the vehicle body.
6 Enter the vehicle being towed and
start the hybrid system.If the hybrid system does not start, turn the
power switch to ON mode.
7 Shift the shift lever to N and release
the parking brake.When the shift lever cannot be shifted:
→ P.174
■
While towing
If the hybrid system is off, the power assist
for the brakes and steering will not function,
marking steering and braking more difficult.
■
Wheel nut wrench
Wheel nut wrench is installed in luggage
compartment. ( → P.378)  Fluid leaks under the vehicle
(Water dripping from the air condi-
tioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature gauge
needle continually points higher
than normal
 Changes in exhaust sound
 Excessive tire squeal when corner-
ing
 Strange noises related to the sus-
pension system
 Pinging or other noises related to
the hybrid system
 Engine misfire or misses, stumbling
or running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when brakingIf you think something is
wrong If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.
Visible symptoms
Audible symptoms
Operational symptoms

372 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible. ■
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.377
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
inflation pressure is at the specified level
and carry out initialization. ( → P.341)
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 wa rning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes).■
When a tire is replaced with a spare tire
The compact spare tire is not equipped with
a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warn-
ing 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 lig ht will go off after a
few minutes.
■
Conditions that the tire pressure warn-
ing system may not function properly
→ P.340
■
If the tire pressure warning light fre-
quently comes on after blinking for 1
minute
If the tire pressure wa rning light frequently comes on after blinking for 1 minute when
the power switch is turned to ON mode,
have 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.
WARNING■
If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer. The
vehicle will become extremely unstable
during braking, and the ABS system may
fail, which could cause an accident
resulting in death or serious injury.■
When the electric power steering
system warning light comes on
When the light comes on yellow, the
assist to the power st eering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy. When steering wheel
operations are heavier than usual, grip
the steering wheel firmly and operate it
using more force than usual. ■
If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions. Failure to do so could cause a loss
of vehicle control and result in death or
serious injury. ●
Stop your vehicle in a safe place as
soon as possible. Adjust the tire infla-
tion pressure immediately.
●
If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able that you have
a flat tire. Check the tire s. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.

3837-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises 4 Lower 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)
6 Stow 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.406)
■
After completing the tire change
The tire pressure warning system must be
reset. ( → P.341)
■
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.