I'm guessing you have just imported the car? If it originated from the uk you may be able to contact Fiat by email at [email protected] Although they couldn't help me with my car as it was never imported into the UK they may at least be able to give you contact info of the origional dealer or at least let you know which country to go to for help.
or Maybe try www.fiat.com maybe they provide contact info on their site. sorry it's not working from here at the moment (guess at the moment i'm lucky that any websites are currently working)!