2015 LEXUS RX450h service

6784-3. Do-it-yourself maintenance
NOTICE■
Repairing or replacing tires, wheels, ti re pressure warning valves, transmitters
and tire valve caps ●
When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitter, contact your Lexus dealer as the tire pressure warning valves and
transmitters may be damage d if not handled correctly.●
When replacing tire valve caps, do not us e tire valve caps other than those speci-
fied. 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 so on as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. (  P. 6 7 1 )■
Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the cushion-
ing ability of the tires. In addition, driv ing on rough roads may cause damage to the
tires themselves, as well as the vehicle’s wheels and body.■
If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

6844-3. Do-it-yourself maintenance
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 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 your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.●
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.

5
When trouble arises
7255-1. Essential information
If your vehicle needs to be towed
Situations needs to contact dealers before towing
The following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
● A warning message for the hybrid system is shown on the multi-infor-
mation display and the vehicle does not move.
● The vehicle makes an abnormal sound.If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a
flatbed truck.
Use a safety chain system for all towi ng, and abide by all state/provincial
and local laws.
2WD models: If towing your vehicle wi th a wheel-lift type truck from the
front, the vehicle's rear wheels and axles must be in good conditions.
(  P. 726, 730)
If they are damaged, use a to wing dolly or flatbed truck.
AWD models: If towing your vehicle with a wheel-lift type truck, use a tow-
ing dolly. (  P. 7 2 6 , 7 3 0 )

7765-2. Steps to take in an emergency
NOTICE■
Do not drive the vehicle with a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.■
Be careful when driving over bumps with the compact spare tire installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.■
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, tire s or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.■
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 so on as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. (  P. 6 7 1 )

8126-1. Specifications
■
Lexus does not recommend gasoline containing MMT
Some gasoline contains oc tane enhancing additive called MMT (Methylcyclopen-
tadienyl Manganese Tricarbonyl).
Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con-
taining MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the inst rument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
NOTICE■
Notice on fuel quality ●
Do not use improper fuels. If improper fuels are used, the engine will be dam-
aged.●
Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-
ers causing the emission control system to malfunction.●
Do not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance problems.●
Using unleaded gasoline with an octane number or rating lower than that stated
here will cause persistent heavy knocking.
At worst, this will lead to engine damage.■
Fuel-related poor driveability
If after using a different type of fuel, poor driveability is encountered (poor hot start-
ing, vaporization, engine knoc king, etc.), discontinue the use of that type of fuel.■
When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.

8176-1. Specifications
6
Vehicle specifications Uniform Tire Quality Grading
This information has b een prepared in accorda nce with regulations
issued by the National Highway Traf fic Safety Administration of the U.S.
Department of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading. Your Lexus dealer will help answer an y questions you may have as you read
this information.
■ DOT quality grades
All passenger vehicle tires must co nform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width. For example: Treadwear 200 Traction AA Temperature A
■ Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed conditions on a specified gov-
ernment test course. For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires de pends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.

869Alphabetical index
Safety Connect* ....................................626
Scuff lights ............................................... 582
Seat belts
Adjusting the seat belt ..................... 100
Automatic locking retractor............ 101
Child restraint system
installation ............................................ 154
Cleaning and maintaining
the seat belts..................................... 638
Emergency locking retractor ........ 101
How to wear your seat belt............. 99
How your child should wear
the seat belt.......................................... 101
Pregnant women,
proper seat belt use........................ 102
Reminder light..................................... 736
Seat belt extender ................................ 101
Seat belt pretensioners.................... 100
Seat heaters............................................ 605
Seat position memory ............................93
Seat ventilators...................................... 605
Seating capacity .....................................301 Seats
Adjustment .................................... 86, 89
Adjustment precautions ............ 88, 91
Child seats/child restraint
system installation............................ 154
Cleaning ................................................. 637
Flatting seat backs ................................ 87
Head restraint ......................................... 97
Power easy access system ..............95
Properly sitting in the seat .............. 130
Seat heaters ......................................... 605
Seat position memory ........................ 93
Seat ventilators ................................... 605
Service reminder indicators ............. 201
Shift lever
Hybrid transmission........................... 186
If the shift lever cannot be
shifted from P ................................... 779
Shift lever light........................................582
Shift lock system .................................... 779
Side airbags.............................................. 132
Side marker lights
Switch......................................................... 217
Side mirror
Adjusting and folding........................ 109
Mirror position memory .................... 93
Smart access system with
push-button start
Entry function ..........................................56
Starting the hybrid system ............... 177
“SOS” button .......................................... 626S
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.