Page 483 of 628

4697-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
CAUTION
When replacing wheels
Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in a loss of handling control.
Never use an inner tube in a leaking wheel which is designed for a tubeless
tire. Doing so may result in an accident, causing death or serious injury.
NOTICE
Replacing tire pressure warning valves and transmitters
Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional or
other qualified service shop. In addition, make sure to purchase your tire pres-
sure warning valves and transmitters at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with
non-genuine wheels.
Page 555 of 628

5418-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
In the following cases, the tire cannot be repaired with the emergency tire punc-
ture repair kit. Contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
When the tire is damaged due to driving without sufficient air pressure
When the tire lost air pressure due to a crack or damage in the tire sidewall
When the tire is visibly separated from the wheel
When the cut or damage to the tread is 4 mm (0.16 in.) long or more
When the wheel is damaged
When two or more tires have been punctured
When there is more than one hole or cut in the damaged tire
Emergency tire puncture repair kit
The sealant has a limited lifespan. The expiry date is marked on the bottle. The
sealant should be replaced before the expiry date. Contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional for
replacement.
The sealant stored in the emergency tire puncture repair kit can be used only
once to temporarily repair a single tire. If the sealant in the bottle and other
parts of the kit have been used and need to be purchased, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
The sealant can be used when the outside temperature is from -30C (-22F) to
60C (140F).
The kit is exclusively designed for size and type of tires originally installed on
your vehicle. Do not use it for tires that a different size than the original ones, or
for any other purposes.
If the sealant gets on your clothes, it may stain.
If the sealant adheres to a wheel or the surface of the vehicle body, the stain
may not be removable if it is not cleaned at once. Immediately wipe away the
sealant with a wet cloth.
During operation of the kit, a loud operation noise is produced. This does not
indicate a malfunction.
The valve of a tire that has been repaired
After a tire is repaired with the emergency tire puncture repair kit, the valve
should be replaced.
Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.
The expiry date is shown on the bottle. Do not use sealant whose expiry date has
already passed. Otherwise, repairs conducted using the emergency tire puncture
repair kit may not be performed properly.
Page 585 of 628
5709-1. Specifications
IS300h_EE(OM53B95E)
16-inch tires
*1: 5 passengers
*2: For optimizing fuel economy, ECO tire pressure is recommended. Tire pres-
sure affects traveling comfort, road noise and steering characteristics.
Tires and wheels
Tire size205/55R16 91W
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than 160 km/h
(100 mph)
250 (2.5, 36)
270 (2.7, 39)*1
250 (2.5, 36)
Normal pressure:
160 km/h (100 mph)
or less
250 (2.5, 36)
ECO pressure*2:
160 km/h (100 mph)
or less
270 (2.7, 39)270 (2.7, 39)
Wheel size16 7J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Page 586 of 628
571
9 9-1. Specifications
Vehicle specifications
IS300h_EE(OM53B95E)
17-inch tires
*: 5 passengers
18-inch tires
When towing a trailer (vehicles with a towing package)
Add 20.0 kPa (0.2 kgf/cm2 or bar, 3 psi) to the recommended tire inflation pres-
sure and drive at speeds below 100 km/h (62 mph).
Tire size225/45R17 91W, 225/45RF17 91W
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)Vehicle speed
Front wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than 160 km/h
(100 mph)
250 (2.5, 36)
270 (2.7, 39)*
250 (2.5, 36)
160 km/h (100 mph)
or less250 (2.5, 36)
Wheel size17 7 1/2J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire size225/40R18 88Y, 255/35R18 90Y
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
250 kPa (2.5 kgf/cm2 or bar, 36 psi)
Wheel size18 8J (225/40R18), 18 8 1/2J (255/35R18)
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Page 627 of 628

611Alphabetical index
IS300h_EE(OM53B95E)
Warning buzzers
Approach warning ................254
Brake system ........................507
Downshifting ........................220
Driver’s and front
passenger’s seat belt
reminder ............................ 509
Lexus parking assist-sensor ..271
Open door .............................509
Pre-crash braking ..................299
Rear passengers’ seat belt
reminder .............................509
Warning lights ...........................105
ABS ......................................508
Automatic headlight leveling
system.................................509
Brake system ........................507
Charging system ...................507
Driver’s and front
passenger’s seat belt
reminder light .....................509
Electric power steering
system.................................508
Low fuel level .......................509
Malfunction indicator lamp ..507
Master warning light ............509
Open door .............................509
Pre-crash safety system ........508
Rear passengers’ seat belt
reminder lights ...................509
Slip indicator ........................508
SRS .......................................508
Tire pressure .........................510Warning messages .................... 514
Warning reflector storage belt .. 419
Washer ...................................... 235
Checking .............................. 446
Preparing and checking
before winter ..................... 311
Switch .................................. 235
Washing and waxing ................ 426
Weight ...................................... 562
Wheels ...................................... 468
Replacing ............................. 468
Size ...................................... 570
Window glasses ........................ 184
Window lock switch ................. 184
Windows................................... 184
Power windows.................... 184
Rear window defogger......... 404
Windshield wiper de-icer ......... 405
Windshield wipers .................... 235
Intermittent windshield wipers
with interval adjuster ......... 235
Rain-sensing windshield
wipers ................................ 237
Winter driving tips.................... 311
Wireless remote control............ 130
Battery-Saving Function ...... 150
Locking/Unlocking ...... 136, 143
Replacing the battery ........... 472
WMA disc ................................ 341
W