
TABLE OF CONTENTS6
IS300h_EE(OM53D56E)
7-1. Maintenance and careCleaning and protecting the vehicle exterior ................. 442
Cleaning and protecting the vehicle interior ..................446
7-2. Maintenance Maintenance requirements............................. 449
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................. 451
Hood ...............................................453
Positioning a floor jack ............. 454
Engine compartment................455
12-volt battery..............................463
Tires ..................................................466
Replacing the tire ........................476
Tire inflation pressure................482
Wheels............................................484
Air conditioning filter................486
Electronic key battery ............. 488
Checking and replacing fuses ............................................... 491
Light bulbs .....................................495 8-1. Essential information
Emergency flashers.................... 512
If your vehicle has to be stopped in an
emergency .................................. 513
8-2. Steps to take in an emergency
If your vehicle needs to be towed ...................................... 514
If you think something is wrong ...........................................520
If a warning light turns on or a warning buzzer
sounds........................................... 521
If a warning message is displayed..................................... 527
If you have a flat tire (vehicles with
emergency tire
puncture repair kit).................545
If you have a flat tire (vehicles with run-flat
tires) ..............................................559
If the hybrid system will not start ...................................... 560
If the shift lever cannot be shifted from P ............................ 562
7Maintenance and care8When trouble arises

8
IS300h_EE(OM53D56E)Please note that this manual applies to all
models and explains all equipment, including
options. Therefore, you may find some expl anations for equipment not installed on your
vehicle.
All specifications provided in this manual are current at the time of printing. However,
because of the Lexus policy of continual product improvement, we reserve the right to
make changes at any time without notice.
Depending on specifications, the vehicle show n in the illustrations may differ from your
vehicle in terms of color and equipment.
Both genuine Lexus and a wide variety of other spare parts and accessories for Lexus
vehicles are currently available on the market. Should it be determined that any of the
genuine Lexus parts or accessories supplied with the vehicle need to be replaced, Lexus
recommends that genuine Lexus parts or accessories, be used to replace them. Other
parts or accessories of matching quality can also be used. Lexus cannot accept any liabil-
ity or guarantee spare parts and accessories which are not genuine Lexus products, nor
for replacement or installation involving such parts. In addition, damage or performance
problems resulting from the use of non-genuine Lexus spare parts or accessories may
not be covered under warranty.
For your information
Main Owner’s Manual
Accessories, spare parts and modification of your Lexus

10
IS300h_EE(OM53D56E)The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with the airbags and seat belt pretensioners left as
they are, this may cause an accident such as fire. Be sure to have the systems of the SRS
airbag and seat belt pretensioner removed and disposed of by a qualified service shop or
by any authorized Lexus dealer or repairer,
or another duly qualified and equipped pro-
fessional before you scrap your vehicle.
Scrapping of your Lexus
Your vehicle contains batteries and/or accumulators. Do not discard them into the
environment but cooperate with separate collection (Directive 2006/66/EC).
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol and
certain drugs delay reaction time, impair judgment and reduce coordination, which
could lead to an accident that could result in death or serious injury.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers or
pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to driving. Anything that distracts the
driver, such as adjusting controls, talking on a cellular phone or reading can result in a
collision with resulting death or serious injury to you, your occupants or others.
■General precaution regarding children’s safety
Never leave children unattended in the vehicle, and never allow children to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by playing with the windows, the moon
roof, or other features of the vehicle. In addition, heat build-up or extremely cold tem-
peratures inside the vehicle can be fatal to children.

23Pictorial index
IS300h_EE(OM53D56E)
Inside rear view mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 179
Sun visors
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 435
Vanity mirrors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 435
Interior light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 426
Personal lights
*2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 426
Moon roof switches
*3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 189
Intrusion sensor cancel switch
*3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 99
Intrusion sensor and tilt sensor cancel switch
*3. . . . . . . . . . . . . . . . . . . . . . P. 99
1
2
3
4
5
6
*1: NEVER use a rearward facing child re- straint on a seat protected by an AC-
TIVE AIRBAG in front of it, DEATH or
SERIOUS INJURY to the CHILD can
occur. ( →P. 76 )
*2: The illustration shows the front, but they are also equipped in the rear.
*3: If equipped

31Pictorial index
IS300h_EE(OM53D56E)
Inside rear view mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 179
Sun visors
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 435
Vanity mirrors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 435
Interior light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 426
Personal lights
*2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 426
Moon roof switches
*3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 189
Intrusion sensor cancel switch
*3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 99
Intrusion sensor and tilt sensor cancel switch
*3. . . . . . . . . . . . . . . . . . . . . . P. 99
1
2
3
4
5
6
*1: NEVER use a rearward facing child re- straint on a seat protected by an AC-
TIVE AIRBAG in front of it, DEATH or
SERIOUS INJURY to the CHILD can
occur. ( →P. 76 )
*2: The illustration shows the front, but they are also equipped in the rear.
*3: If equipped

361-1. For safe use
IS300h_EE(OM53D56E)
Adjust the angle of the seatback so
that you are sitting straight up and so
that you do not have to lean forward
to steer. (→P. 1 6 5 )
Adjust the seat so that you can
depress the pedals fully and so that
your arms bend slightly at the elbow
when gripping the steering wheel.
( → P. 1 6 5 )
Lock the head restraint in place with the center of the head restraint closest to
the top of your ears. ( →P. 1 74 )
Wear the seat belt correctly. ( →P. 3 8 )
Make sure that all occupants are wearing their seat belts before driving the vehi-
cle. ( →P. 3 8 )
Use a child restraint system appropriat e for the child until the child becomes
large enough to properly wear the vehicle’s seat belt. ( →P. 6 0 )
For safety drive
For safe driving, adjust the seat and mi rror to an appropriate position before
driving.
Correct driving posture
1
2
Correct use of the seat belts
3
4

371-1. For safe use
1
For safety and security
IS300h_EE(OM53D56E)
Make sure that you can see backward clearly by adjusting the inside and outside
rear view mirrors properly. (→P. 179, 181)
Adjusting the mirrors
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
●Do not place a cushion between the driver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce the effec-
tiveness of the seat belt and head restraint.
●Do not place anything under the front seats.
Objects placed under the front seats may be come jammed in the seat tracks and stop
the seat from locking in place. This may lead to an accident and the adjustment mech-
anism may also be damaged.
●When driving over long distances, take regular breaks before you start to feel tired.
Also, if you feel tired or sleepy while drivin g, do not force yourself to continue driving
and take a break immediately.

401-1. For safe use
IS300h_EE(OM53D56E)
■After the rear center seat belt has been used
■Emergency locking retractor (ELR)
The retractor will lock the belt during a sudden stop or on impact. It may also lock if you
lean forward too quickly. A slow, easy motion will allow the belt to extend so that you can
move around fully.
■Child seat belt usage
The seat belts of your vehicle were princi pally designed for persons of adult size.
●Use a child restraint system appropriate fo r the child, until the child becomes large
enough to properly wear the vehicle’s seat belt. ( →P. 6 0 )
●When the child becomes large enough to prop erly wear the vehicle’s seat belt, follow
the instructions regarding seat belt usage. ( →P. 3 8 )
■Replacing the belt after the pretensioner has been activated
If the vehicle is involved in multiple collisions, the pretension er will activate for the first
collision, but will not activate for the second or subsequent collisions.
■Seat belt regulations
If seat belt regulations exist in the country where you reside, please contact any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped professional for
seat belt replacement or installation. Stow the buckle as shown.