Does it come right on solid and stay solid as soon as you turn the car on? Or does it come on blinking, blink for a minute, and then go solid? Once you've got that answer, you can search here for existing posts that tell you the two different meanings.
Press and hold the Tpms button until It still stops blinking. If It doesn’t stop blinking after wards, the battery in one or more the tires has ran out. Mine had ran out years ago, my car thinks I have a flat for more than 3 years!!!
Avoid doing that. The button is used for telling the car what your normal tire pressures are. The idea is you make sure all your tires are aired up to the pressure you want, and then you do the button thing, and it remembers those pressures, and sets the alarm for a bit lower than those. If you haven't changed your mind what pressures you want, there's no need to do it again. If you have changed your mind, then you can air up the tires to your new preferred pressures, and do the button thing again. It isn't there for other purposes. If you go pressing it at other times, you're just telling the car the pressures you want are whatever it thinks they are at that moment.
I got new tires a few months ago. Light blinks on startup and then goes solid after a minute. Took it to back to America’s Tire to get it checked out. Two of the sensors were dead, other two low battery. Just ignore it
Most likely the TPMS battery are dead, they only last 10 years. I still gotta change mine hopefully I’ll have time to do a video on it.
On my 06 the first TPMS went bad at 9.5 years, the others lasted almost 11-12+ years. If you are getting new tires, take the hint and get 4 new ones. I found a crazy way to make a fake reading with a spare OEM TPMS in a binder clip, which basically allowed me to get the light off and monitor 3 tires for a couple years until I replaced all. My state does not mandate that the TPMS be working, last I knew anyways (Va.). In order to play these games you need a TPMS reader, which we used to use Toyata Techstream, these days I own a Autel reader, but that does not give me code entry capability on a Toyota.
Happened to me a couple months ago. I live on a dirt road with a lot of bumps lol. The light would flash at startup and then go solid continually. I tried the button under the dash but it wouldn't help. After about 2 weeks of that and another trip down the dirt road, it finally went off. All tire pressures were correct this whole time. I have a feeling that somehow the bumps in the road maybe did something to the sensor.
Mine used to work again during hot weather. Once winter came back, tpms said I had at least a flat. Years later I had flats all year round.