Fiat 500 Key Fob Replacement
If your 500 key fob fails to function Try a different one to see if the car can detect it. If it does, then the problem is probably due to the battery or water damage on the original fob.
First, replace the battery. Make sure that the new # CR2032 coin battery is inserted correctly, with the "+" side facing down on the fob.
Dead Battery
The majority of the time, when a fob's not working, it's because the battery is dead. It's simple to fix it Most fobs warn you when the battery is not fully charged. You can find instructions for the majority of car key fobs on YouTube or in the owner's manual. You can also take it to a local locksmith or the dealer that gave it to you to repair it.
Other times, a device can cease to function, and it could be an issue with the internal circuit board. This isn't very common but it could happen. The internal chip can be damaged in the event you drop the fob onto something hard. This is also the case if you use an aftermarket key and the fob won't function. In this situation it is required to visit a dealer or locksmith to have the key reset so that it works with your 500.
One 2012 FIAT FIAT 500 flip key remote - Looks-alike Ilco with lock, unlock and trunk buttons - new keyless entry replacement (will require cutting and program by locksmith).
Damaged Chip

A fiat 500 key fob is an electronic device that transmits the signal for the car to start once you press the button. It has a microchip containing information about the code needed to connect with your car. If the chip is damaged, it will not transmit the correct code, and the car won't start. It's possible to repair this type of damage and a locksmith can assist. United Locksmith is capable of completing this service for classic models as well as the latest ones, so don't feel in a rush to call them.
You can purchase a brand new fob and have it programmed professionally by locksmiths. It is cheaper to do this than go to the dealer and works just as well. You'll need to provide some information for the locksmith, such as the year your car was manufactured and the model.
If you are not sure how to fix this problem, try rub the chip with a US dollar bill. The copper on the bill is abrasive enough to remove dirt and oxidation, but it will not cause any harm to the microchip. If the chip is physically damaged, however, it may not be able to be repaired. This can happen when you drop the chip or run it over by your vehicle.
Water Damage
Whether you accidentally dropped your keys in the pool, put them in your purse while swimming at the beach or splashed them with water on a rainy day, it's likely that your fob will have some water damage. Even if there's only the smallest amount of water on the key, it can cause serious problems to the electronic components of the key.
It is usually possible to solve this problem by removing the fob and cleaning it with a towel. Once the fob is dry, you can replace its battery. It will then begin functioning normally.
You could also take your fob to a local locksmith or auto shop to have it professionally cleaned and programmed. These experts will be able to use special equipment to ensure that the key fob is compatible with the car's computer system.
When the key fob on your Fiat 500 stops working, you might feel angry and stressed. It can be expensive and time-consuming to take your key fob to a dealer. Locksmiths can handle every aspect of your car's key fob replacement without the necessity of a dealership visit. They are a better option than a dealer because they can handle all aspects of your car's key fob replacement without the requirement for a dealership visit.
Pairing Issues
If you drop your keyfob or it stops functioning and nothing else appears to be wrong, it could be the chip. This can be due to water damage or a dead battery, or it may just need reprogramming.
This is often done by following the directions in your owner's guide. However it's a good idea to get an auto locksmith take care of this if you're having difficulties or the steps in your manual don't work for you. This will ensure that the chip is not damaged, and is the cheapest option.
Another issue that plagues some 500 owners is that the key fob will not secure the car. This could be an issue if you're driving to an gas station to fill up. Some owners have even reported their 500's locking mechanism failing and requiring replacement of the entire steering intermediate shaft. This problem has actually been mentioned in a technical service bulletin (TSB) from Fiat.
A reputable locksmith can help you should your Fiat has issues. Suggested Online site can duplicate the key you have or make you a brand new one that is able to lock and start the vehicle. They are able to do this without looking at your old key, and it's generally cheaper than buying one from the dealer.