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How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key FOB may cease to function. One of the most common is the small “watch” battery that's inside it that fails. It's a 3.3-volt lithium CR2032 and you can purchase it anywhere for less than $3. A locksmith is the best option to contact if you require a new car key for an old Fiat model. United Locksmith can provide this service and also has the tools and replacement parts required. Keys Fiat keys might appear simple however inside is a chip that is communicating with the immobiliser system in your car. If the chip is not present, or not properly programmed to the immobiliser, your car will not be able to start. Luckily Car Keys Solutions are able to provide dealer-standard technology and equipment to ensure that your Fiat key can be repaired, even when it has been damaged or is lost. A spare key will keep your vehicle operating in the event of an accident or lockout. Whether you need an ordinary blank or a remote fob, we can assist. We use the best quality blanks that are available and offer a fast turnaround to ensure you get back on the road in a hurry. Some people prefer to visit an Fiat Dealership when they require a replacement key, but we can provide a less expensive and quicker service. You'll also save the towing charges of bringing your vehicle to and from the dealership because we can bring it to you. This can also decrease the waiting time which is often up to 10 days at a dealer. Remotes The remote controls on Fiat vehicles are like keys, however they come with an IR LED (infrared). The LED sends a digital signal to the device that allows the vehicle to open or start when the button is pressed. The microprocessor inside the key transforms the signal into a code that is then sent to the device. This is also known as “keyless entry”. The more recent your car is, the more likely you'll have the keyless system. The more advanced your vehicle has, the more features it will have. This includes everything from locking and unlocking your vehicle with a single press to opening the doors without having to actually reach the door handle and much more. The key fob is equipped with an integrated circuit chip that connects to the vehicle's immobiliser system. The system will determine if the key is correct by checking a particular sequence within the transponder. The vehicle won't start in the event of a chip being missing or in the event that it is not programmed to the right immobiliser system. If the key fob is damaged, a locksmith can create a replacement. They will also have to program the replacement key to sync with the immobiliser of the car. This is an essential part of the procedure, and you should be prepared to give information about your vehicle to the locksmith when they call. Keyless Entry If you have a keyless entry system in your Fiat 500, you can lock and unlock the vehicle from anywhere with a push of one button. This technology is becoming more common in all cars of all ages and types and adds convenience and security to the vehicle's usage. If your remote keyless entry system fails to work, check to see whether the battery inside the fob has gone dead. Replace fiat key programming with one that has the same voltage size, type, and size as the original one if it's depleted. You should also ensure that the battery's contacts are free of corrosion or dust. The key fob comes with rubber seals to protect the electronic chip from water, however, 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 it and let the battery dry completely before replacing it. You can also clean the electronic chip with isopropyl or an electronic cleaner. While some people might believe that keyless entry isn't as secure, this system is actually more secure than other systems because the code used to unlock your car is rolled up after every use. This means that even if hackers attempt to intercept the signal and attempt to access your car, they won't be able to gain permanent access to your vehicle. 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” in the BCM. This is the reason why an unwritten key is not able to be programmed because the BCM must read and write it's secret key to the transponder and then lock it. This is referred to as the process of cloning. These are new replacement outer case SIP22 transponder keys for your fiat 500. They have a chip inside that opens the doors and starts the car. They will need to be cut professionally by a locksmith to match your ignition.