Leave the radio turned off when driving, and after a while may be a couple of hours or when you come to start it the radio will prompt for *Code in* and display ****. Enter your 4 digit reset code for the radio. If you do not have the code then you will have try websites or go to a Fiat dealer who will probably charge you for the code.
Jeff G
March 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix in-car audio.