* Check Engine Light: This requires using a code reader to diagnose the problem and then clearing the code (sometimes the light will go off after a few driving cycles if the problem is resolved). There's no single button.
* Trip Odometer: There's usually a button on the instrument cluster to reset the trip odometer. The exact location and procedure may vary slightly depending on the trim level.
* Other systems: Other settings (radio presets, clock, etc.) have their own individual reset or setting procedures.
In short, there's no "reset button" for the entire vehicle.