2022 LEXUS IS350 run flat

12Pictorial index
Precautions for winter season ..................................................................................... P.234
To prevent freezing (windshield wiper de-icer)
*................................................. P.249
Precautions for car wash ............................................................................................... P.272
Fuel filler door .......................................................................................................... P.157
Refueling method ............................................................................................................... P.157
Fuel type/fuel tank capacity ......................................................................................... P.367
Tires.......................................................................................................................... .. P.296
Tire size/inflation pressure ............................ .................................................... P.296, 372
Winter tires/tire chains .................................................................................................. P.234
Checking/rotation/tire pressure warning system.............................................. P.296
Coping with flat tires......................................................................................................... P.341
Hood ......................................................................................................................... P. 285
Opening ........................................................................................................................ .......P.285
Engine oil ..................................................................................................................... ......... P.367
Coping with overheating ............................................................................................... P.357
Warning messages ..........................................................................................................P.338
Headlights ................................................................................................................. P.14 5
Turn signal lights ......................................................................................................P.138
Parking lights/daytime running lights................ ............................................... P.145
Side marker lights ................................................................................................... P.145
Tail lights .................................................................................................................... P.145
Stop lights
Tail lights .................................................................................................................... P.145
Back-up lights
Shifting the shift lever to R .............................................................................................. P.13 5
License plate lights ................................................................................................. P.145
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P. 313, Watts: P.375)
E
F
G
H
I
J
K
L
M
N
O

1684-5. Using the driving support systems
■Enabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on ( P.75) of
the multi-information display.
The system is automa tically enabled each
time the engine switch is turned to IGNI-
TION ON mode.
If the system is disabled, the PCS warn-
ing light will turn on and a message will
be displayed on the multi-information
display.
■Changing the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on ( P.75) of the
multi-information display.
The warning timing setting is retained
when the engine switch is turned off. How-
ever, if the pre-collision system is disabled
and re-enabled, the operation timing will
return to the default setting (middle).
If the pre-collision warning timing is
changed, emergency steering assist
timing will also be changed accord-
ingly.
If late is selected, emergency steering
assist would not operate in case of an
emergency.
WARNING
●When the vehicle is raised on a lift with
the engine running and the tires are
allowed to rotate freely
●When inspecting the vehicle using a
drum tester such as a chassis dyna-
mometer or speedometer tester, or
when using an on vehicle wheel bal-
ancer
●When a strong impact is applied to the
front bumper or front grille, due to an
accident or other reasons
●If the vehicle cannot be driven in a sta-
ble manner, such as when the vehicle
has been in an accident or is malfunc-
tioning
●When the vehicle is driven in a sporty
manner or off-road
●When the tires are not properly
inflated
●When the tires are very worn
●When tires of a size other than speci-
fied are installed
●When tire chains are installed
●When a compact spare tire or an
emergency tire puncture repair kit is
used
●If equipment (snow plow, etc.) that may
obstruct the radar sensor or front cam-
era is temporarily installed to the vehi-
cle
Changing settings of the pre-col-
lision system

2816-2. Maintenance
6
Maintenance and care
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotate
smoothly?
• Does the steering wheel have the cor-
rect amount of free
play?
•There should not be any strange sounds
coming from the
steering wheel.
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors/trunk operate smoothly?
Engine hood
•Does the engine hood lock system
work properly?
Fluid leaks
•There should not be any signs of fluid
leakage after the
vehicle has been
parked.
ItemsCheck points
Tires
• Is the tire inflation pressure correct?
• The tires should not be damaged or
excessively worn.
• Have the tires been rotated according to
the maintenance
schedule?
•The wheel bolts should not be loose.
Windshield wip-
ers
• The wiper blades should not show any
signs of cracking,
splitting, wear, con-
tamination or defor-
mation.
• The wiper blades should clear the
windshield without
streaking or skip-
ping.
ItemsCheck points

2846-3. Do-it-yourself maintenance
Light bulbs
(P.313)
•Bulb with same num-
ber and wattage rat-
ing as original
• Phillips-head screw- driver
•Flathead screw- driver
•Wrench
Radiator, con-
denser and inter-
cooler radiator
( P.293)

Tire inflation pres-
sure ( P.304)• Tire pressure gauge
•Compressed air
source
Washer fluid
(P.296)
• Water or washer
fluid containing anti-
freeze (for winter
use)
• Funnel (used only for adding water or
washer fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Keep hands, clothi ng and tools away
from the moving fan and engine drive
belt.
●Be careful not to touch the engine,
radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil
and other fluids may also be hot.
ItemsParts and tools●Do not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel or the battery.
Fuel and battery fumes are flammable.
●Be extremely cautious when working
on the battery. It contains poisonous
and corrosive sulfuric acid.
■When working near the electric cool-
ing fans or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION
ON mode, the electric cooling fans may
automatically start to run if the air condi-
tioning is on and/or the coolant tempera-
ture is high. ( P.293)
■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

2996-3. Do-it-yourself maintenance
6
Maintenance and care
If this accidentally occurs, either turn the
engine switch to off and then to IGNITION
ON mode, or initialize the system after
checking that the tire pressure is properly
adjusted.
Your vehicle is equipped with a tire
pressure warning system that uses tire
pressure warning valves and transmit-
ters to detect low tire inflation pressure
before serious problems arise.
 The tire pressure detected by the
tire pressure warning system can be
displayed on the multi-information
display.
 If the tire pressure drops below a
predetermined level, the driver is
warned by a screen display and a
warning light. ( P.333)
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire
inflation pressure
checks. Make sure to check tire inflation
pressure as part of your routine of daily
vehicle checks.
■Tire inflation pressure
●It may take a few minutes to display the
tire inflation pressu re after the engine
switch is turned to IGNITION ON mode.
It may also take a few minutes to display
the tire inflation pressure after inflation
pressure has b een adjusted.
●Tire inflation pressure changes with tem-
perature. The displayed values may also
be different from the values measured
using a tire pressure gauge.
■Situations in which the tire pressure
warning system may not operate prop-
erly
●In the following cases, the tire pressure
warning system may not operate prop-
erly.
• If non-genuine Lexus wheels are used.
• If a tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• If a tire has been replaced with a tire that is not of the specified size.
• If tire chains, etc. are installed.
• An auxiliary-supported run-flat tire is
equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehi-
cle, particularly around the wheels or
wheel housings.
• If the tire inflation pressure is extremely
higher than the specified level.
• If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warn- ing valves and transmitters is not regis-
tered in the tire pressure warning
computer.
●Performance may be af fected in the fol-
lowing situations.
• When driving near a TV tower, electric power plant, gas station, radio station,
large display, airport or other facility that
generates strong radi o waves or electri-
cal noise
• When carrying a portable radio, cellular
phone, cordless phone or other wireless
Tire pressure warning system

3166-3. Do-it-yourself maintenance
7IS500: Install the engine compart-
ment cover.
1 Push up center portion
2 Insert
3 Press
■Rear turn signal lights
1 Open the trunk and apply protec-
tive tape to the vehicle body around
the light unit.
Use masking tape, etc. Do not use duct
tape, as it may leave residue or damage the
paint when removed.
2Insert a flathead screw-driver
between the cover and the light unit and pry up the cover in several
positions as shown in the illustration
to disengage the claws (indicated
by a dotted line).
To prevent scratching the vehicle, wrap the
tip of the flathead scre
wdriver with a cloth,
etc.
3 Pull the cover toward the rear of the
vehicle to remove it.
4 Remove the 2 bolts.

3277-2. Steps to take in an emergency
7
When trouble arises
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 engine
 Engine missing, stumbling or run-
ning roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking 
Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor
If 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

3728-1. Specifications
*: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
Type A
Pedal free play0.04  0.24 in. (1.0  6.0 mm)
Brake pad wear limit0.04 in. (1 mm)
Parking brake lining wear limit0.04 in. (1 mm)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3, or
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size235/45R18 94Y, T155/70D17 110M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear: 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare: 60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Driving at high speeds above 100 mph (160 km/h) (in
countries where such speeds are permitted by law)
Add 4 psi (30 kPa, 0.3 kgf/cm
2 or bar) to the front tires and
rear tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size18  8 1/2J, 17  4T (spare)
Wheel bolt torque103 ft•lbf (140 N•m, 14.3 kgf•m)