How to Repair Fiat 500 Keys There are a myriad of reasons your Fiat 500 key fob may cease to function. One of the most common is the small "watch" battery that's inside dies. fiat replacement key 's a 3.3-volt lithium CR2032 and you can find it at a price of less than $3. If you require a new key for an older Fiat model locksmith is the one to call. United Locksmith can p
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