Why Fiat Doblo Key Fob Replacement Is A Must At Least Once In Your Lifetime How to Repair Fiat 500 Keys There are a few reasons your Fiat 500 key FOB may not function properly. One of the most frequent is the tiny "watch" battery inside dies. This is an 3.3-volt lithium CR2032 You can buy it for less than $3. A locksmith is
