After i changed my oil, i notice that the Maint REQD light turn on. I also change the oil filter while changing the oil and some oil from the filter place pour from it so oil may have touch something??? The car drive fine and nothing seem wrong with it but the light is on.

 

Nothing is wrong. Its just a reminder light to tell you when you should service your car. I think it comes on after 6000 miles or something. You can turn it off by pressing the reset button under the steering column. Hope that helped.