2012 Lexus IS220d tire pressure

425
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_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 air pressure, reducing the cushion-
ing 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 and wheels (vehicles with 17- and 18- inch tires)
Wheels with 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 pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

426
4-3. Do-it-yourself maintenance
IS250/220d/200d_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.

427
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_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 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.

494
5-2. Steps to take in an emergency
IS250/220d/200d_EE
The compact spare tire
The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily only in an emergency.
Make sure to check the tire pressure of the compact spare tire. (P. 548)
If you have a flat rear tire on a road covered with snow or ice (vehicles with
a compact spare tire)
Install the compact spare tire on the front of the vehicle. Perform the follow-
ing steps and fit tire chains to the rear tires.
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the
vehicle.
Fit tire chains to the rear tires.
STEP1
STEP2
STEP3

5
501
5-2. Steps to take in an emergency
When trouble arises
IS250/220d/200d_EE
Emergency tire puncture repair kit components
BottleAir pressure
Compressor
Hose
Stickers
Air release cap
Power plug Insertion key

506
5-2. Steps to take in an emergency
IS250/220d/200d_EECheck the specified tire infla-
tion pressure.
Tire inflation pressure is speci-
fied on the label on the driver's
side pillar as shown. (P. 548)
Start the engine.
To inject the sealant and inflate
the tire, turn the compressor
switch on.
Use the kit with the top facing
upward.
STEP8
STEP9
STEP10

5
507
5-2. Steps to take in an emergency
When trouble arises
IS250/220d/200d_EEInflate the tire until the recom-
mended pressure is reached.
The sealant will be injected
and the pressure will spike to
300 kPa (3.0 kgf/cm
2 or bar,
44 psi) or 450 kPa (4.5 kgf/
cm
2 or bar, 65 psi), then
gradually decrease.
The air pressure gauge will
display the actual tire infla-
tion pressure about 1 minute
after the switch is turned on.
• Turn the compressor switch off
and then check the tire inflation
pressure. Being careful not to
over inflate, check and repeat
the inflation procedure until the
recommended tire inflation
pressure is reached.
• If the needle of the air pressure
gauge reaches the red zone (450
kPa [4.5 kgf/cm
2 or bar, 65 psi]
or more), there may be a mal-
function in the tire or in the kit
itself. Stop operation immedi-
ately.
• If the tire inflation pressure is
still lower than the recom-
mended level after inflating for
10 minutes with the switch on,
the tire is too damaged to be
repaired. Turn the compressor
switch off and contact any
authorized Lexus dealer, tire
dealer or repairer, or another
STEP 11

5
509
5-2. Steps to take in an emergency
When trouble arises
IS250/220d/200d_EE
• If the tire inflation pressure
exceeds the recommended
level, let out some air to adjust
the tire inflation pressure. (P.
512)
Disconnect the hose from the valve on the tire and then pull
out the power plug from the power outlet socket.
To spread the liquid sealant evenly within the tire, immedi-
ately drive for about 5 km (3 miles).
After driving for about 5 km (3
miles), stop your vehicle in a
safe place on a hard, flat surface
and reconnect the compressor.
Turn the compressor switch on
and wait for several seconds,
then turn it off. Check the tire
inflation pressure.
If the tire inflation pressure is
below 130 kPa (1.3 kgf/cm
2
or bar, 19 psi): The puncture
cannot be repaired. Contact
any authorized Lexus dealer,
tire dealer or repairer, or
another duly qualified and
equipped professional.
If the tire inflation pressure is
between 130 kPa (1.3 kgf/
cm
2 or bar, 19 psi) and a
point below the recom-
mended level: The tire can be
STEP 12
STEP 13
STEP 14
STEP 15