The button is at the center of the dashboard right next to the hazzards flasher button above the radio. The only thing it will do is DE activate the traction control system when you press it and you will notice a yellow ''TRACTION OFF'' light in the instrument cluster. Press it again and it will RE activate the system or when you shut off the engine and next time you start it up again it will automatically be activated. But if you happen to have the lower end, less equipped SE model, there will not be any traction button, therefore traction control system is always activated.