Fiat 500 Key Fob Replacement
If your 500 keyfob stops working, you can use a different one to see if it can be detected by the car. If it does, the problem is most likely to be with the original fob's battery or water damage.
Replace the battery first. Make sure that the new # CR2032 coin battery is properly inserted, with the "+" side facing down in the fob.
Dead Battery
The battery is typically the reason for the fob's inability to function. It's simple to fix it, and most fobs notify you that the battery is low. You can find the correct procedure on YouTube for nearly every car's key fob or look in the owner's manual. You can also bring it to a local locksmith or to the dealer that provided it to you to repair it.
Sometimes a fob stops working due to a glitch with the internal circuit board. It's rare, but it does happen. The internal chip can be damaged in the event that you drop the fob over something that is hard. It can also happen if you use an aftermarket fob and it doesn't work. In this scenario it is essential to go to a dealer or locksmith to have the key reset to work with your 500.
One 2012 FIAT FIAT 500 flip key remote – Looks like Ilco with lock, unlock, and trunk buttons – new replacement keyless entry (will need to cut & program by a locksmith).
Chips Damaged
A key fob with the fiat 500 number is wireless device that gives an indication for the car to start after you press the button. It is equipped with a microchip that contains information about the code that is needed to communicate with the car. If the chip is damaged it won't transmit the correct code, and the car will not start. Locksmiths can repair the damage. United Locksmith is capable of performing this service for traditional models as well as more recent ones, so don't feel scared to contact them.
Locksmiths can program an entirely new key fob. This is much cheaper than going to the dealer and will work just as well. You'll need to provide certain details to the locksmith, such as the year that your car was built and the model.
If you are not sure how to solve this problem try rubbing the chip with a US dollar bill. The copper in the bill is abrasive and will get rid of dirt and oxidation. However, it will not cause harm to the microchip. The chip might not be repairable in the event of physical damage. This can happen if you drop it, run it over by your vehicle, or some other kind of physical trauma.
Water Damage
If you've accidentally dropped your keys in the pool, left them in your pocket while swimming at the beach, or splashed them with water during a rainy day, it's likely that your fob may have water damage. Even if there's only some water on the keys, this could cause serious problems for its electronics and prevent it from functioning properly.
The good news is that you can usually solve this issue by removing the fob's key and then using an old towel to scrub it of any remaining dirt or water. When the fob is dry you can then replace its battery and it should start working again.

You can also take the fob to a local locksmith or auto shop to get it professionally cleaned and programmed. key fiat 500 can use special equipment to make sure that the key fob works with the car's computers.
If your Fiat 500's keys fob fails to function, it can be frustrating and stressful. It can be expensive and time-consuming to take your key fob to a dealer. Locksmiths can take care of every aspect of your car's key fob replacement without the necessity of a dealership visit. Because of this, they are a better choice than a dealership.
Pairing Issues
If you lose your keyfob or it ceases to function, and nothing else appears to be wrong, it may be the chip. This can be due to water damage or a dead battery. it could be that it needs reprogramming.
This is often done by following the steps in your owner's manual. If you're having difficulty or your manual doesn't work then you should hire an automotive locksmith perform this task. This will ensure that the chip isn't fried and will likely be the most affordable solution.
Another issue with 500 owners is that the key fob won't secure the car. This can be a big issue if you're going to a gas station and want to refill. Some owners have reported the locking mechanism of their 500's malfunctioning and they had to replace the entire intermediate shaft of the steering. This problem has actually been mentioned in a technical service bulletin (TSB) from Fiat.
If you're having trouble with your Fiat or other car, a reputable locksmith can help. They can duplicate your key or make you a brand new one that locks and opens the car. They are able to do this without looking at your old key, and is usually less expensive than buying a key from a dealer.