It just a reminder that its time to do maintenance for your car. It does not indicate that anything is wrong. What you should be more worried about is the check engine light. In order to reset the maintenance required light there is a button thats right underneath the drivers side dash on the right hand side. You turn your key to the on position and press and hold this button till it turns off.

This topic has been covered a buncha times, try doing a search for more elaborate details.