Fiat 500 Key Fob Replacement If your 500 keyfob stops working, you can use a different one to test if it will be recognized by the car. If it does, the issue is likely with the battery or water damage to the fob that was originally used. First, replace the battery. Make sure that the new # CR2032 coin cell battery is properly inserted with the "+" side facing down on the fob. Dead Battery The battery is often the reason behind the fob's inability to function. This isn't a problem to repair and most fobs warn you when the battery is failing. You can find the correct procedure on YouTube for nearly every key fob on your vehicle or in your owner's manual. You can also change it by taking it to an authorized locksmith or a dealer who gave it to you. Sometimes a fob will stop working due to a glitch with the internal circuit board. It's rare but it does happen. If you dropped the fob onto something hard, it could cause damage to the internal chip. It could also happen if you are using an aftermarket fob, and the key doesn't work. In this situation you'll be required to go to a locksmith or dealer and have it reprogRammed to work with your 500. One 2012 FIAT 500 Flip Key Remote that resembles Ilco brand with trunk, lock and lock buttons. It is a replacement keyless entry remote (will need to be cut & programmed by locksmith) Damaged Chip Fiat 500 key fobs are wireless devices that transmit signals to the car when you press the button. It has a microchip which contains the information required to communicate with the car. If the chip is damaged it will not transmit the correct code and the car won't begin. Locksmiths can fix this kind of damage. United Locksmith is capable of offering this service to classic models as well as more recent models, so don't be uneasy about calling them. You can buy a new fob and have it programmed professionally by a locksmith. https://www.thekeylab.co.uk/fiat-car-keys/ is much cheaper than visiting a dealer and will function just as well. You'll have to provide some information for the locksmith, such as the year your vehicle was made and the model. Rub the chip with an old dollar bill if not sure what to do. The copper in the bill is abrasive enough take away oxidation and dirt but it will not cause any damage to the microchip. The chip may not be repaired in the event of physical damage. This can happen when you drop it, knock it over by your vehicle or experience any other kind of physical trauma. Water Damage If you've accidentally dropped your keys in the pool, put them in your bag while swimming at the beach, or splashed them with water on a rainy afternoon you can be sure that your fob may have water damage. Even if it's just a little water on the keys, this could cause serious issues with the electronics inside and stop it from functioning effectively. It is usually possible to solve this problem by getting rid of the fob and then cleaning it with a towel. When the fob is dry and clean, you can replace its battery and it should start working normally. You can also take it to an auto shop or locksmith to get it professionally programmed and cleaned. The professionals will be able to use special equipment to ensure that the key fob is compatible with your car's computer. If the key fob of your Fiat 500 stops working, you may feel frustrated and overwhelmed. It's expensive and difficult to transport your key fob to a dealer. Locksmiths can take care of every aspect of your car's key fob replacement without the requirement of a dealership trip. They are a better option than a dealer because they can handle every aspect of your car's key fob replacement without the need for a dealer visit. Pairing Issues If you accidentally drop your keyfob or it stops working and nothing else appears to be wrong, it could be the chip. This could be due to water damage or a dead battery. it could be that it needs reprogramming. In most cases, this can be accomplished by following the directions in the owner's manual. If you're having problems or your manual isn't working and you need to have an automotive locksmith perform this task. This ensures the chip isn't damaged and is the most cost-effective solution. Another issue facing 500 owners is that the key fob doesn't lock the car. This could be a problem if you plan to fill up at the gas station. Some owners have reported that their 500's locking system been damaged and they have needed to replace the entire intermediate steering shaft. This problem has actually been cited in a technical service bulletin (TSB) from Fiat. If you're having trouble with your Fiat, an experienced locksmith could help. They'll duplicate your key or make you a new one that will lock and start the car. They can do this without ever seeing your old key and are usually much less expensive than purchasing it from a dealer.