Fiat Doblo Key Fob Replacement's History History Of Fiat Doblo Key Fob Replacement How to Repair Fiat 500 Keys There are many reasons why your Fiat 500 key fob may stop working. One of the most frequent is that the tiny "watch" battery that's inside dies. It's a 3.3-volt lithium CR2032 You can buy it at a price of less than $3.
