I have an service light and I do not know what it means

That should be for the sensor in the tires.. check how much PSI of air you have in them. i like to stay a few PSI under the tire rating if you havent been driving. since the heat from driving expands the tire a bit. well once you check all for tires and correct the air pressure problem, there should be a reset switch by the drivers seat. if i remember correctly its next to the trunk popper, and VTC button. its a button that looks like the exclamation point you pointed out. push it in to reset, and the light should stay off