The Story Behind Fiat Doblo Key Fob Replacement Is One That Will Haunt You Forever! How to Repair Fiat 500 Keys There are a few reasons why your Fiat 500 key FOB may cease to function. One of the most common is when the small "watch" battery that's inside the device dies. This is an 3.3-volt lithium CR2032 and you can find it for
