Hello I will help you with your question,
First check the air pressure in all the tires, it should be 32psi.
If all the tires are up to pressure, have you had any tire work done lately?
If you have had no tire work done and the pressures are up the reset button is located in the fuse block on the right end of the dash board. Open the right door and remove the cover on the end of the dash you will see the tire reset switch on the upper right of this diagram, pressit once and drive the car over 25mph for five minutes the system will reset unless there is a problem with one of the sensors.
Let m eknow if you have further questions about this