Fiat 500 Key Fob Replacement
If your 500 key fob stops working Try using a different one to see if your car will recognize it. If it does, the issue is most likely due to the original fob's battery or water damage.
First, replace the battery. The "+" side should be facing down.
Dead Battery

The majority of the time, when a fob's not working, it's just because the battery is dead. It's not difficult to fix, and most fobs warn you when the battery is running low. You can find the instructions on YouTube for nearly any car's key fob or look in your owner's manual. You can also change it by taking it to the locksmith or dealer who gave it to you.
Sometimes a fob stops working due to a problem with the internal circuit board. This isn't a lot of common but it can occur. The internal chip may be damaged in the event you drop the fob on something that is hard. It can also happen if you are using an aftermarket fob and it doesn't work. In this case you'll be required to go to a locksmith or dealer and get it reprogRammed to work with your 500.
One 2012 FIAT 500 Flip Key Remote - Look-alike Ilco brand with lock, unlock and trunk buttons. It is a replacement keyless entry remote (will need to be cut and programmed by a locksmith)
Chips that are damaged
A fiat 500 key fob is an electronic device that transmits the signal for the car to start when you push the button. It has a microchip that holds details about the code required to connect with your car. If replacement key fiat 500 is damaged, it won't transmit the correct code, and the car will not start. It's possible to repair this kind of damage and a locksmith can help. United Locksmith is capable of performing this service for traditional models as well as the latest ones, so don't hesitate to call them. afraid to call them.
You can buy a new fob and have it programmed professionally by locksmiths. This is a lot less expensive than going to a dealer and will work exactly the same way. A locksmith will require specific details from you, such as the year in which your vehicle was built and the name of its model.
Rub the chip with an old dollar bill if you're not certain of what to do. The copper on the bill is abrasive enough to take away oxidation and dirt however, it won't cause damage to the microchip. The chip may not be repairable in the event of physical damage. This could happen if fall it, ram it over with your vehicle or any other type of physical stress.
Water Damage
Water damage is likely to occur on your fob, no matter if you dropped them in the pool accidentally, left them in pockets while swimming, or splashed water on them during a rainy afternoon. Even if you only have a small amount of water on the key, it can cause serious problems with the electronic components of the key.
The good news is that you can solve this issue by taking off the key fob and using a paper towel to clean it of any remaining dirt or water. After the fob is dry, you can replace its battery. It will then begin functioning normally.
You can take it to an auto shop or locksmith to have it professionally programmed and cleaned. These experts will be able to utilize special equipment to make sure that the key fob is compatible with the computer system in your car.
If your Fiat 500's keys fob ceases to work, it could be frustrating and stressful. It is tempting to go to the dealer get your key fob replaced however, this can be expensive and time-consuming. A locksmith can handle every aspect of your car's key fob replacement without the necessity of a dealer visit. Locksmiths are better than a dealer, as they can take care of all aspects of the replacement of your car's key fob without the need for a dealer visit.
Pairing Issues
When you drop your key fob, or it stops working, and nothing else appears to be the issue this could be because of the chip that has gone off the rails. This could be due to water damage, a dead battery or it could just be that you need to reprogramme it.
Most of the time, this can be accomplished by following the instructions in your owner's manual. However it's a good idea to hire an automotive locksmith do this if you're having difficulties or the steps in the manual don't work for you. This will ensure that your chip isn't fried and will likely be the cheapest solution.
Another problem with some 500 owners is that the key fob doesn't secure the car. This could be a major issue if you're at an gas station to fill up. Some owners have reported that the locking system of their 500 been damaged and they have required replacement of the entire intermediate steering shaft. Fiat has even mentioned this problem in a technical bulletin (TSB).
If you're having issues with your Fiat, a reputable locksmith can help. They will duplicate your current key or create a new one that is able to lock and start the car. They're able to do this without ever seeing your old key and are generally more affordable than purchasing it from the dealership.