My name is*****'m a Certified Auto Technician with over 12 years experience. I will do my best to help you.
It sounds like you have a problem with one or more of the tire pressure sensors. Un fortunatly without any specialized tools there isn't much you can do.
First I would start by checking the tire pressure of all of your tires including the spare, because sometimes there is also a sensor in the spare tire.
Then if you take it to your local garage or tire shop they should be able to quickly identify the problem. by the sounds of it you either have a faulty or damaged sensor, or it is possible that for some reason the tire pressure monitor system module has lost the wireless code for the sensor in the tire.
Unfortunatly there is no way to turn off the system, and I know that most sensors from a dealership can be quite expensive. But I do know that there are many reliable after market replacement TPMS sensors that are usually less than half of the price of the sensor from a dealership.
So unfortunately you wont be able to turn the light off without paying someone to inspect the system, but if you can live with the light or warning message on then you can just keep checking your tire pressures with each tank fill up to ensure they aren't losing air.
Hopefully this has answered your question,
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