2011 Lexus IS F Owner's Manual

381
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
NOTICE
Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot holes.
These conditions may cause losses in tire inflation pressure, reducing the
cushioning ability of the tires. In addition driving on rough roads may cause
damage to the tires themselves, as well as the vehicle’s wheels and body.
Low profile tires
Low profile tires may cause greater damage than usual to the tire wheel
when receiving impact from the road surface. Therefore pay attention to the
following:
Be sure to use proper tire inflation pressure. If tires are under-inflated,
they may be damaged more severely.
Avoid pot holes, uneven pavement, curbs and other road hazards.
Failure to do so may lead to severe tire and wheel damage.
If tire inflation pressure becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

382
4-3. Do-it-yourself maintenance
IS F_EE
Tire inflation pressure
Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
Reduced fuel efficiency
Reduced driving comfort and tire life
Reduced safety
Damage to the drive train
If a tire needs frequent refilling, have it checked by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Instructions for checking tire pressure
When checking tire inflation pressure, observe the following:
Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1.5 km or 1 mile, you will get an accurate cold tire
inflation pressure reading.
Always use a tire pressure gauge.
The appearance of the tire can be misleading. In addition, tire inflation
pressures that are even just a few pounds off can degrade ride and han-
dling.
Do not bleed or reduce tire inflation pressure after driving. It is normal
for the tire inflation pressure to be higher after driving.
Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is
balanced.
Make sure to maintain the proper tire inflation pressure. Tire inflation
pressure should be checked at least once per month. However, Lexus
recommends that tire inflation pressure be checked once every two
weeks.

383
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
CAUTION
Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may
occur and result in an accident causing death or serious injury.
Excessive wear
Uneven wear
Poor handling
Possibility of blowouts resulting from overheated tires
Poor sealing of the tire bead
Wheel deformation and/or tire separation
A greater possibility of tire damage from road hazards
NOTICE
When inspecting and adjusting tire inflation pressure
Be sure to reinstall the tire valve caps.
Without the valve caps, dirt or moisture could get into the valve and cause
air leakage, which could result in an accident. If the caps have been lost,
replace them as soon as possible.

384
4-3. Do-it-yourself maintenance
IS F_EE
Wheels
If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause loss of han-
dling control.
Wheel selection
When replacing wheels, care should be taken to ensure that
they are equivalent to those removed in load capacity, diame-
ter, rim width, and inset*.
Replacement wheels are available at any authorized Lexus
dealer or repairer, or another duly qualified and equipped pro-
fessional.
*: Conventionally referred to as “offset”.
Lexus does not recommend using:
Wheels of different sizes or types
Used wheels
Bent wheels that have been straightened
Aluminum wheel precautions
Use only Lexus wheel nuts and wrenches designed for use
with your aluminum wheels.
When repairing or changing your tires, check that the wheel
nuts are still tight after driving 1600 km (1000 miles).
Use only Lexus genuine balance weights or equivalent and

385
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
Tire and wheel replacement (if equipped)
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 tube-
less tire. Doing so may result in an accident, causing death or serious
injury.
Each tire and wheel is designed only for
its original position on the vehicle.
Therefore, when replacing tires and
wheels make sure that they are fitted in
the position indicated on the reverse side
of the wheel.
“FR”: Front right-hand side
“FL”: Front left-hand side
“RR”: Rear right-hand side
“RL”: Rear left-hand side

386
4-3. Do-it-yourself maintenance
IS F_EE
Air conditioning filter

387
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
The air conditioning filter must be cleaned or changed regularly to
maintain air conditioning efficiency.
Removal method
Set the air conditioning system to recirculated mode.
(P. 228)
The air conditioning filter case cannot be removed with the
system in the outside air mode.
Turn the “ENGINE START STOP” switch to OFF.
Open the glove box. Lift and
remove the partition.
Remove the filter cover.
Remove the filter case.
STEP1
STEP2
STEP3
STEP4
STEP5

388
4-3. Do-it-yourself maintenance
IS F_EE
Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the “Lexus Service Booklet” or “Lexus Warranty Booklet”.)
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
Cleaning method
If the filter is dirty, clean by
blowing compressed air
through the filter from the
downward side.
Hold the air gun 5 cm (2 in.)
from the filter and blow for
approximately 2 minutes at
500 kPa (5.0 kgf/cm
2 or bar,
72 psi).
If it is not available, have the
filter cleaned by any autho-
rized Lexus dealer or
repairer, or another duly
qualified and equipped pro-
fessional.
Replacement method
Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “UP” marks shown on
the filter and the filter case
should be pointing up.