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How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key FOB may not function properly. fiat 500 key replacement of the most frequent is the small “watch” battery that's inside it dies. It's a 3.3-volt lithium CR2032 and you can find it anywhere for less than $3. A locksmith is the best choice to call if require a new key for your car for a classic Fiat model. United Locksmith can provide this service and can provide the tools and spare parts required. Keys On the outside a Fiat key may appear simple however inside the case is an electronic chip that connects to your car's immobiliser system. If the chip is not present, or is not programmed correctly to the immobiliser, your car will not be able to start. Fortunately Car Keys Solutions are able to provide standard dealer technology and equipment to ensure your Fiat key is repaired, even when it has been damaged or has been lost. A spare key will keep your vehicle operating in the event of an accident or lockout. We can supply you with a standard key or a remote fob. We only use the top blanks and offer a fast turnaround so you can get back to driving quickly. Some individuals will opt to visit Fiat Dealerships when they require a new key, but we are able to provide a less expensive and faster service. We can also come to your location to save you the expense of towing your vehicle to the dealer. This can also decrease the waiting time, which is usually up to 10 days. Remotes The remote controls for Fiat vehicles look similar to the keys themselves, with the exception that they have an IR (infrared) LED at the other end. This LED transmits an indication to the device which opens or starts the car when you press. The signal is detected by a microprocessor located in the key that converts it into a code that is then transmitted to the device. This process is known as “keyless entry”. The more modern your vehicle, the more likely you are to include a keyless entry system. The more advanced your car has, the more features will come with. This includes everything from locking and unlocking your car with a button press to opening the doors without having to touch the door handle and many more. The key fob is equipped with an integrated circuit chip that communicates with the immobiliser system of the car. The system determines whether the key is in fact correct by checking a particular sequence in the transponder. If the chip is not present, or has not been programmed with the correct immobiliser system, the vehicle will not begin. A locksmith can repair the key fob in case it's damaged. They will also have to program the replacement key to connect with the immobiliser system of your car. It is recommended to provide your locksmith details regarding your vehicle whenever they call. Keyless Entry If you have a keyless entry system on your Fiat 500, you can lock and unlock the vehicle at any time with the push of the button. This technology is increasingly common in all kinds of vehicles, and adds security and convenience to the use of your vehicle. If your remote keyless entry system ceases to function, check to see whether the battery for the coin in the fob has gone dead. Replace the battery with one with the same voltage size, type and size as the original one if it is drained. It is important to ensure that the battery contacts are clean and free of dust or corrosion. The rubber seals on the key fob guard the electronic chip from water. However long-term exposure to soapy water or salty water can cause the chip to fail. If your key fob has been exposed to water, you must remove the battery and let it dry completely before putting it back into. You can also clean the electronic chip with isopropyl or electronic cleaner. While some people might believe that keyless entry is less secure, this system is actually more secure than traditional systems because the code that unlocks your vehicle is rolled back 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 car. Transponders Fiat utilizes a crypto-key transponder system, which means that the keys and transponders have to be precoded by the Body Control Module before they are “programmed” within the BCM. This is the reason why an unwritten key cannot be programmed, because the BCM has to read & write its secret key to the transponder, then lock it. This process is referred to as the cloning. These are new replacement outer case SIP22 transponder key for your Fiat 500. They contain a chip that unlocks the door and opens the vehicle. They must be professionally cut by a locksmith to match your ignition.