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How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key fob may not function properly. The tiny “watch” inside the key FOB will often fail. It's a 3.3 volt lithium battery, CR2032, which can be purchased almost anywhere for under $3. A locksmith is the ideal source to call if you require a replacement car key for the classic Fiat model. United Locksmith can provide this service and also has the tools and replacement parts required. Keys Fiat keys may appear simple, but inside is an electronic chip that communicates with the immobiliser system of your car. If fiat key replacement is not in place or programmed to the immobiliser system in a correct manner the car will not start. Car Keys Solutions can offer you the latest technology and equipment from dealers to repair your Fiat key, even if the key has been damaged or lost. A spare key can keep your vehicle running in case of an accident or lockout. Whether you need an ordinary blank or a remote fob, we can help. We only use the highest quality blanks, and we offer a rapid turnaround so you can get back on the road quickly. Some people will choose to visit a Fiat Dealership if they need a new key, but we can provide a more affordable and quicker service. You can also avoid the towing charges of bringing your vehicle from and to the dealership because we can deliver the key to you. This will also cut down on the time it takes to wait which can range from a few days to 10 days. Remotes The remote controls on Fiat vehicles are similar to keys, but they are equipped with an IR LED (infrared). This LED sends signals to the device that allows the car to open or stop when it is pressed. The signal is picked up by a microprocessor within the key, which transforms it into a number that is then transmitted to the device. This method is referred to as “keyless entry”. The more recent your car is and the more likely it is to include a keyless entry system. The more advanced your car has, the more features it will have. This includes locking and unlocking your car with just pressing a button, opening the doors without touching the handle, and so much more. The key fob comes with an integrated circuit chip that communicates with the immobiliser system in the car. The system can tell whether the correct key is present by looking for a particular sequence of digits in the transponder chip. If the chip isn't present, or has not been programmed with the correct immobiliser, the vehicle won't start. A locksmith can replace the key fob in case it's damaged. They'll also have to program the new key to sync with the car's immobiliser system. This is an important part of the procedure, and you should be prepared to disclose information regarding your vehicle to your locksmith if they contact you. Keyless Entry If you have keys-less entry on your Fiat 500, you can lock and unlock your car at any time with the push of a button. This is a growing feature across all cars that adds convenience and security to the operation of your car. Examine your remote keyless entry system isn't working. The battery in the fob could be dead. If the battery is depleted replace it with a fresh one that has the same voltage, size, and type as the original. You should also make sure that the contacts of the battery are free of corrosion or dust. The key fob comes with rubber seals that shield the electronic chip from water but prolonged exposure to salty or soapy water may cause the chip to fail. If your key fob has been exposed to water, you must remove the battery and allow it to dry completely before putting it back into. You can also clean the electronic chip with isopropyl alcohol or electronic cleaner. The keyless entry system is more secure than traditional systems, because it generates the code that is used to unlock your car after every use. This means that even if hackers are able to intercept the signal and attempt to access your car, they won't be able to gain permanent access to your car. Transponders Fiat uses a crypto keys transponder system which means the keys and transponders have to be precoded with a secret code that is generated by the Body Control Module (BCM) before being “programmed” into the BCM. This is why a blank unwritten key cannot be programmed, because the BCM must read and write the secret code to the transponder before locking it. This is referred to as cloning. These are brand new replacement outer cases OE SIP22 Transponder keys for Fiat 500. They contain a chip that opens the door and begins the vehicle. They must be cut professionally by a locksmith so that they fit your ignition.