How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key fob may stop working. The tiny "watch" inside the key FOB often dies. This is an 3.3-volt lithium CR2032 and you can purchase it at a price of less than $3. When you need a replacement key for an older Fiat model locksmith is the one to contact. United Locksmith offers this service, and has all the
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