Tire Pressure light is on. Tires look fine.

My Lesabre has buttons on the left side of the dash. The one called Gage Info has a number of things like oil pressure check tire pressure heat Battery. Push this button till it says check tire pressure To reset your light push the reset button and hold for fifteen or twenty second and the light on the dash should go out and it will show tire pressure ok on the gage. Before you reset check all four tires for air as one tire could be down 8 or 10 lbs and the light will come back on. they all have to be the same pressure.
When you change your oil you should reset the oil section as well and hold reset the same as above. The oil section tells you how much oil you use over an amount of time.

First, check the tire pressure of the spare. If all tires are properly inflated, then one of the sensors are bad and must be replaced.

If all tires are properly inflated you have a bad tire pressure monitor. It is connected to the valve stem inside of the wheel. Need to go to tire store or repair center that has a tire pressure monitor scan tool. It will tell which sensor needs to be replaced.

Check your tires with a gauge.the system works on percentage of pressure lost.Or by the rpm of the tire when driving depending on the year/make/model.Set your pressure to what is specified on the door.

The sensor need to be checked,it can be probably a loose connection on the sensor ,this can happen when you have rotate the tires.

after rotating tires equipped with tpms, a relearn must be performed so the sensors know where they are. a tpms reprogrammer is required for this.

MAYBE THE TIRES R FINE BUT THE SENSORS INSIDE TIRES R NOT EACH TIRE HAS ITS OWN SENSOR WHEN ONE GOES OUT THE LIGHT COMES ON

check not only the tires on the car, check the level on the spare tire to, cause some of those have the sensors also... most cars will reset the light once you have the pressures right and drive on the tires a few miles to reset the light.... hope this helps you..

You have to "Teach" the tire sensors to the correct pressure. The 02 Sienna does not measure the actual PSI tire pressures, it measures the RPM of the tires. with the tires set to specs, the rotation RPM is "x". If a tire goes low, the rotation RPM would bt "y", and that will light the light.

The proceedure: Set the tires to specs with a known good pressure gauge. The ones that you can put in your pocket, that looks like a pen, are alway sincorrect. Get one with a needle reading. Set the tires correctly. Now, press the reset button, hold it until the light blinks 3 times. Drop it into gear, and DRIVE IT. 8-12 miles, above 19 MPH, and UNDER 61 MPH. This will re-teach the ABS computer the correct values.

the tire in the trunk has a sensor also check the spare tire pressure , only the dealer will tell you this after you are charged to mount and balance the spare in the trunk..