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4-3. Do-it-yourself maintenance
4
Maintenance and care
■ Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least once a month.
Do not forget to check the spare.
■ 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 inflating, have it checked by your Lexus dealer.
■ 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 mile or 1.5 km, 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 handling.
● Do not reduce tire inflation pressure after driving. It is normal for the tire infla-
tion pressure to be higher after driving.
If the tire inflation pressure is not at the recommended level,
adjust the pressure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and
adjustment, apply soapy water to the valve and check for leak-
age.
Put the tire valve cap back on.
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