thats the brain for the maitnence required light. As you can see theres a button to press on it and its the button to disable the light when it comes on every 3xxx miles
Its made of ABS plastic
Your ABS units are in the engine bay next to the intake, all four hubs and on the passenger side rear pannel under the quarter pannel glass.
if you dont belive me check on how to disable your maitnence required light and its that box you press.