The tire pressure light just came on in a 5 year old tire that I decided to put on the ES350.

The two front tires are 36 lbs, two rear were 32, I adjusted them all to be around 32 and the light is still on, including the spare tire in the trunk.

I decided to put this tire on because it has much better tread than the last.

Regardless, I don't know why the light is on. Any suggestions?

 

Did you manually reset the TPMS?

 

Does the tire light flashes when first starting the car? If it does then u might have bad sensor or your 2nd set switch button is on (under the glove box). If it's not flashing then do this. Set all tires at 30 psi including the spare. With ignition on press and hold the tire initialize button that's located under the dash by the the steering column. Hold the button until the tire light flashes 3 times and then let go. Set the tires at desired pressures and you're done. The light should go away.