Fiat 500 Key Fob Replacement
If your 500 key fob doesn't work, try using another one to see if the car will recognize it. If it does, it could be a problem with the battery or water damage on the original fob.
Replace the battery first. Make sure that the new # CR2032 coin battery is properly inserted with the "+" side facing down on the fob.
Dead Battery
Most of the time when a fob isn't working it's because the battery is dead. It's easy to fix and the majority of fobs will give you a warning if the battery is in low. You can find instructions for most car fobs on YouTube or in your owner's guide. You can also replace it by taking it to the locksmith or dealer who sold it to you.
Sometimes a fob will stop working due to a glitch with the internal circuit board. This isn't very common but it is possible to happen. If you dropped the fob on something hard it can damage the internal chip. It can also happen if you use an aftermarket key and the fob doesn't function. In this instance, you will need to go to an expert locksmith or dealer and get it reprogRammed to work with your 500.
One 2012 FIAT 500 Flip Key Remote - resembles Ilco brand with trunk, lock and lock buttons - new replacement keyless entry remote (will need to be cut & programmed by a locksmith)
Chips damaged
A fiat 500 key fob is an wireless device that sends the signal needed for the car to start when you push the button. It is equipped with a microchip that contains information about the code needed to communicate with your car. If the chip is damaged, it won't send the correct code, and the car won't start. It is possible to repair this type of damage, and a locksmith can help. United Locksmith can complete this repair on both classic and modern models, so do not hesitate to call.
Locksmiths can program a new key fob. It's less expensive to do this than go to the dealer, and it is just as effective. You'll need some details to the locksmith, for example, the year your vehicle was made and the model.
If you're not sure how to fix this problem Try rub the chip with the help of a US dollar bill. The copper in the bill is abrasive, and will remove dirt and oxidation. However, it will not harm the microchip. If the chip is physically damaged it might not be in a position to be repaired. This could happen if you drop it 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 wet day you can be sure that your fob will have some water damage. Even if it only has a small amount of water on its key, it can cause major problems with its electronics and hinder it from working effectively.
You can usually solve this issue yourself by taking the fob off and cleaning it using a paper towel. When the fob is dry and clean, you can replace its battery and it should start working normally.
You can take it to an auto shop or locksmith to have it professionally cleaned and programmed. These professionals will use special equipment to make sure that the key fob works with the computer in your car.
If your Fiat 500's key fob isn't working, it can be a stressful and frustrating. You may be tempted to visit a dealer to get your key fob replaced however this could be expensive and time-consuming. Locksmiths can replace your key fob with no need to visit an auto dealer. Visit Web Page are more reliable over a dealer as they can handle all aspects of the replacement of your car's key fob without the requirement for a dealership visit.
Pairing Issues
If you lose your keyfob, or it ceases to function and nothing else seems to be wrong, it may be the chip. It could be due to water damage or an unresponsive battery.
It is usually done by following the directions in the owner's manual. However it's a good idea to have a locksmith from your automotive perform this procedure if you're having problems or if the directions in your manual aren't working for you. This will ensure that the chip isn't fried and will likely be the least expensive option.
Another issue with 500 owners is that the key fob can't secure the car. This could be a problem when you want to fill up at gas stations. Some owners have complained that their 500's locking system has been damaged and they have had to replace the entire intermediate steering shaft. Fiat has actually cited this issue in a technical bulletin (TSB).
A reputable locksmith will assist you in the event that your Fiat is experiencing problems. They will duplicate your current key or create a new one that locks and starts the car. They are able to do this without looking at your old key, and it's generally cheaper than purchasing one from the dealer.