Toyota 4runner 2009 User Manual page 392

4-3. Do-it-yourself maintenance
If the tire inflation pressure is not within the recommended
levels, adjust inflate the tire.
If you add too much air, press the center of the valve to
lower.
After completing the tire inflation pressure measurement
and adjustment, apply soapy water to the valve and check
for leakage.
Reinstall the tire valve cap.
Tire inflation pressure check interval
n
You should check tire pressure every two weeks, or at least once a
month.
Do not forget to check the spare.
Effects of incorrect tire inflation pressure
n
Driving with incorrect tire inflation pressure may result in the following:
Reduced fuel efficiency
l
Reduced driving comfort and tire life
l
Reduced safety
l
Damage to the drive train
l
If a tire needs frequent refilling, have it checked by your Toyota dealer.
Instructions for checking tire inflation pressure
n
When checking tire inflation pressure, observe the following:
Check only when the tires are cold.
l
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.
l
The appearance of the tire can be misleading. In addition, tire infla-
tion pressures that are even just a few pounds off can degrade ride
and handling.
396