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How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key fob may stop working. The small “watch” inside the key FOB often dies. It's an 3.3 voltage lithium, CR2032, that can be purchased almost anywhere for under $3. A locksmith is the ideal option to contact if you require a new car key for an old Fiat model. United Locksmith offers this service and offers all the tools and parts required. Keys On the outside, a Fiat key might appear basic but inside the casing is a chip that communicates with your vehicle's immobiliser system. If the chip is not present, or is not programmed correctly to the immobiliser, your car isn't able to start. Car Keys Solutions can offer you dealer-grade equipment and technology to repair your Fiat key, even if the key has been damaged or lost. A spare key can keep your vehicle in case of an accident or lockout. No matter if you need a standard blank or a remote fob we can help. We use the highest quality blanks available and offer rapid turnaround time to ensure you are back on the road quickly. Some people prefer to visit an Fiat Dealership when they need a new key, but we are able to offer a lower cost and quicker service. We can also come to you, saving you the cost of towing your car to the dealer. This can also cut out the waiting time which can last up to 10 days at a dealer. Remotes The remote controls on Fiat vehicles are similar to keys, but they come with an IR LED (infrared). This LED transmits an electronic signal to the device that opens or turns off the vehicle when it is pressed. The signal is picked up by a microprocessor within the key which converts it into a code which is then sent to the device. This process is called “keyless entry”. The more modern your car is, the more likely you'll have keysless entry. The more advanced your car has, the more features it will come with. This includes locking and unlocking your car with just pressing a button or opening the doors without touching the handle, and much more. The key fob is equipped with an integrated circuit chip that connects to the immobiliser system in the car. The system determines if the key is correct by examining a specific sequence within the transponder. If the chip is not there, or if it has not been programmed with the correct immobiliser system then the vehicle will not start. A locksmith can repair the key fob if it is damaged. They will also have to program the replacement key to connect with the immobiliser system of your car. It is important to provide your locksmith with information about your car when they call. Read A great deal more If you have a keyless entry system in your Fiat 500, you can lock and unlock the car at any time with the push of the button. This technology is becoming more popular in cars of all types and ages, and it adds convenience and security to your car's use. Verify that your remote keyless entry system is not working. The battery inside the fob could be depleted. Replace the battery with a newer one that has the same voltage size, type, and size as the original if it has been drained. Also, ensure that the contacts of the battery are free of dust or corrosion. The key fob's rubber seals to protect the chip from water, however, prolonged exposure to soapy or salty water could cause the chip to fail. If your key fob is exposed to water, remove the battery and let it dry completely before putting it back in. You can also clean the electronic chip using isopropyl or an electronic cleaner. Keyless entry systems are more secure than the traditional systems, because it rolls up the code that is used to unlock your vehicle after each use. This means that hackers will not be able to gain permanent access to the vehicle even if they intercept the signal. Transponders Fiat uses a crypto key transponder system which means that the keys/transponders need to be precoded by the Body Control Module before they are “programmed” by the BCM. A blank key that has not been programmed can't be programmed since the BCM must read and write its secret key to the transponder before locking it. This process is called cloning. These are new replacement outer case SIP22 transponder key for your fiat 500. They come with a chip that opens the doors and starts the car. Locksmiths will need to cut them to fit your ignition.