How to Find a Fiat 500 Spare Key
Fiat's classic Fiat 500 has become a classic since its relaunched in 2007. The company has launched a larger offensive to different powertrains with the launch of a mild hybrid version.
The replacement of the key fob batteries on the Fiat 500 are simple and inexpensive. The Fiat main dealer will supply the key within 10 days.
Fault Diagnosis
The key fob is equipped with an electronic chip that communicates with your Fiat's immobiliser system to ensure that only authorised vehicles can start the engine. If the transponder chip in your key fob is damaged, it won't be able to link up to the immobiliser unit and this means that your car won't start.
It is possible to repair the key fob of a person who has been broken, as long as the chip isn't physically harmed. A professional locksmith will use standard technologies from dealers to repair the chip quickly.
By using an OBD scanner, it is possible to check if the fob is still communicating with the receiver module. This is a simple procedure and can provide first indications of the root cause. If the OBD scanner shows that there is no communication between the receiver and transmitter modules, it may be required for the fob's transmitter module to be replaced. This is a costly option, and should be left to an expert locksmith.
Dead Coin Battery
The most frequent reason for the key fob not working is a dead battery. It's simple fix that takes only a few minutes. Make sure the key fob can be detected by your vehicle. Press the "Lock" and "Unlock" buttons to determine whether they respond.
The key fob might not work at all, or only intermittently, if out of range. This could be an indication that the circuit board in the key fob has gone bad. It is recommended to consult the owner's guide to get instructions on how you can reprogram the keyfob in this situation.
The mechanical latch can be removed from the back of the key fob. (See the image below). Then, gently pry out mobile of the battery holder close to the switch and remove the old coin cell battery. Then, put a new # CR2032 3 volt battery into the fob assembly with the "+" side facing toward the cover on the rear of the key fob, and the "side facing down towards the key fob with the " side facing downwards towards the rubber buttons.
Water Damage
The key fob is not waterproof even though it's got rubber seals to prevent water from getting into the electronic chip. The key fob should be fine in the event of the rain or water from a wash, however, submerging the device in pools or ocean waters is not recommended.
If the key fob is exposed to water and ceases to function it must be reset. This can be done by following instructions in your owner's manual or by bringing it to a professional auto locksmith or an Fiat dealer.
Another reason why a fob won't work is that it's out of the range of your car. Key fobs typically have a range of approximately 30 feet and if they're far away from the vehicle, it won't be able to recognize them. The first step is to get closer to your vehicle. If you're not able to get it working, the battery for your key fob may require replacement. You can find information on how to replace the battery in all vehicles either on YouTube or by consulting the owner's guide. If your key fob looks damaged and scratched, it's time to replace it.
Faulty Receiver Module
Fiat's more modern models do not require an actual key to start or open the car. These cars have a key fob that sends a wireless signal to the car, allowing it to turn off and on the engine. If you've lost your key fob, a locksmith will replace it for you. Let the experts and save time and money. They can also program the new key for your Fiat.

You will need to give the locksmith some details over the phone when you want a spare Fiat key. You'll need to provide the locksmith details regarding your car, such as the year it was made and the model. This is vital as locksmiths need it to ensure that the new key is compatible with the locks in place.
You should be aware that not all locksmiths can make replacement keys for Fiat vehicles. You need to look for one with a great reputation and has experience in this particular field. This means you can be certain that the key will work with your vehicle and you won't waste money.
Keys that are not paired
If you have a keyfob that has isn't working, the most frequent reason is an unresponsive coin battery. The key fob is equipped with metal clips that keep the battery in place, and completes the circuit. If these clips wear out or loose, they can cause contact issues and loss of power. Replace the battery by purchasing a new one with the same voltage, size and specifications, or get a spare.
It is important to dry out the key fob in case it has been submerged in liquid. Using isopropyl alcohol or electronic cleaner is an effective method of doing this. It is also recommended to remove the battery and clean the circuit board, and replace it before replacing.
Contacting a locksmith is the best option in case you're unable to find an additional. A locksmith who is certified to reprogram Fiat transponder keys can do this without having to see the original keys. This is a far cheaper and faster solution than waiting for a genuine Fiat key to arrive from Italy. A professional locksmith will also have the equipment and tools needed to complete the replacement in as little time as possible.