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How to Repair Fiat 500 Keys There are many reasons why your Fiat 500 key fob may stop working. One of the most common is the small “watch” battery inside the device dies. It's an 3.3-volt lithium CR2032 and you can find it for less than $3. If you require keys to replace an older Fiat model locksmith is the right person to call. United Locksmith offers this service, and has all the tools and parts needed. Keys Fiat keys may appear simple but inside is an electronic chip that communicates with the immobiliser system in your vehicle. If this chip is not present or programmed to the immobiliser system in a correct manner then your vehicle won't start. Luckily, fiat car keys are able to provide dealer-standard technology and equipment to ensure that your Fiat key can be repaired when it has been damaged or has been lost. A spare key will keep your vehicle running in case of an accident or lockout. We can supply you with a standard key or a remote fob. We use the best quality blanks available and offer quick turnaround so that you are back on the road quickly. Some people will choose to go to a Fiat Dealership when they require a new key, but we are able to offer a lower cost and quicker service. We can be there for you without the expense of towing your vehicle to the dealer. This can reduce the time it takes to wait which can range from a few days to 10 days. Remotes The remote controls on Fiat vehicles are like keys, however they have an IR LED (infrared). The LED transmits an IR signal to the device which opens or starts the car when you press. The microprocessor inside the key converts the signal into a number that is then transmitted to the device. This is referred to as “keyless entry”. The newer your vehicle is and the more likely you are to include a keyless entry system. The more modern your car is and the more features you'll likely find in it. This includes everything from locking and unlocking your car with a button press and opening the doors without having to actually touch the door handle, and more. The key fob comes with an integrated circuit chip that communicates with the immobiliser system of the car. The system determines whether the key is working by checking a particular sequence within the transponder. If the chip is not present, or if it has not been programmed to the correct immobiliser, the vehicle will not start. A locksmith can repair the key fob if it's damaged. They'll also need to program the replacement key to sync with the immobiliser system of your car. This is a crucial aspect of the procedure, and you should be prepared to provide details about your car to your locksmith when they call you. Keyless Entry If you have an entry system that is keyless on your Fiat 500, you can secure and unlock the car from any location with the click of a button. This technology is becoming more popular in cars of all types and ages and can add security and convenience to the use of your vehicle. If your remote keyless entry system ceases to function Check to see if the coin battery in the fob has gone dead. If the battery is depleted, replace it with a new one with the same size, voltage and type as the original. You should also ensure that the battery contacts are free of corrosion or dust. The key fob comes with rubber seals that shield the chip from water but prolonged exposure to salty or soapy water may 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 into. You can also try cleaning the electronic chip with isopropyl alcohol or an electronic cleaner. The keyless entry system is more secure than conventional systems, since it rolls up the code used to unlock your vehicle after each use. This means that hackers won't be able gain permanent access to your vehicle even in the event that they intercept the signal. Transponders Fiat uses a crypto-key transponder system, which means that the keys/transponders must 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 as the BCM has to read & write it's secret key to the transponder before locking it. This is known as the process of cloning. These are brand new replacement outer case OE SIP22 transponder keys for your Fiat 500. They come with a chip that allows you to open the doors and start the car. Locksmiths must cut them to fit in your ignition.