How to Repair fiat 500 spare key cut 500 Keys There are several reasons your Fiat 500 key FOB may stop working. One of the most frequent is when the small "watch" battery that's inside it that fails. It's an 3.3 voltage lithium battery, CR2032, which you can purchase almost anyplace for less than $3. If you require a replacement key for an older fiat punto r...
