Fiat 500 Key Fob Replacement
If your 500 keyfob ceases working, use another one to determine if it will be detected by the car. If it does, then the issue is likely with the battery or water damage on the original fob.
Replace the battery first. The "+" side should be facing downwards.
Dead Battery
The battery is often the cause of the fob's inability to function. This is easy to repair and most fobs give you a warning when the battery is dying. You can find the correct procedure for the majority of car fobs YouTube or in the owner's manual. You can also take it to an area locksmith or the dealer who gave it to you to repair it.
Sometimes, a fob may cease to function, and it could be an issue with the circuit board in the internal circuit. This isn't very common but it could occur. If you dropped the fob on something hard it can damage the internal chip. It could also happen if you use an aftermarket fob, and the key doesn't work. In this instance you'll have to visit an expert locksmith or dealer and get it reprogRammed to work with your 500.
One 2012 FIAT FIAT 500 flip key remote - Looks-alike Ilco with locks, unlocks and trunk buttons - new replacement keyless entry (will require cutting and program by locksmith).
Chips Damaged
A key fob from Fiat 500 is wireless device that gives 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 the chip is damaged, it won't send the correct code, and the car will not start. A locksmith can fix this type damage. United Suggested Online site is capable of performing this service for traditional models as well as newer models, so don't be scared to contact them.
You can buy a new fob and have it programmed professionally by locksmiths. It is cheaper to do this than go to the dealer, and it works just as well. Locksmiths will require specific details from you, like the year that your car was manufactured and the name of its model.
Rub the chip with an old dollar bill if not certain of what to do. The copper in the bill is abrasive and will remove oxidation and dirt. However, it will not cause harm to the microchip. If the chip is physically damaged however, it may not be in a position to be repaired. This can happen when you drop it or run it over by your vehicle.
Water Damage
Whether you accidentally dropped your keys in the pool, left them in your pocket while you were swimming at the beach, or splashed them with water on a rainy day it's likely your key fob is likely to suffer water damage. Even if it's just tiny amounts of water on the key, it can cause major problems for its electronics.
It is usually possible to fix this problem yourself by removing the fob and cleaning it using a paper towel. Once the fob is dry you can replace the battery. It should then start working properly.

You can also take the fob to a local locksmith or auto shop to get it professionally cleaned and programmed. These experts will be able to use special equipment to make sure that the key fob is compatible with your car's computer.
When your Fiat 500's key fob ceases to work, it could be frustrating and stressful. You may be tempted to head to the dealer to replace your key fob however, this can be expensive and time-consuming. A locksmith can replace your key fob with no need to visit an establishment. They are a better choice than a dealer because 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
If you drop your key fob, or it ceases to function and nothing else appears to be problem there could be a chip that has gone awry. This could be due water damage or a dead battery, or it may be due to a need to reprogramme.
It is usually done by simply 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 your manual aren't working for you. This will ensure that the chip isn't damaged, and is the cheapest option.
Another issue facing 500 owners is that the key fob will not secure the car. This could be a problem when you plan to fill up at the gas station. Some owners have even reported the locking mechanism on their 500's failing and having to replace the entire steering intermediate shaft. This problem has actually been reported in a technical service bulletin (TSB) issued by Fiat.
A reputable locksmith will assist you should your Fiat has issues. They'll be able to duplicate your key, or create an entirely new one that can unlock and start your car. They're able to do this without seeing your old key and are generally much cheaper than getting it from a dealer.