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How to Repair Fiat 500 Keys There are a variety of reasons why your Fiat 500 key FOB may stop working. One of the most frequent is when the small “watch” battery that's inside the device dies. This is an 3.3-volt lithium CR2032 You can buy it at a price of less than $3. If you require a replacement key for an older Fiat model, a locksmith is the right person to contact. United Locksmith offers this service and has all the tools and spare parts needed. Keys On the outside a Fiat key might appear basic, however inside the casing is a chip that communicates with your vehicle's immobiliser system. If the chip isn't present or programmed to the immobiliser system in a correct manner then your vehicle will not start. Car Keys Solutions can offer you dealer-grade equipment and technology to repair your Fiat key, regardless of whether the key is damaged or lost. A spare key will 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 only use the top blanks, and we offer a rapid turnaround time so that you can be back to driving quickly. Some customers prefer to visit a Fiat Dealership in order to obtain an updated key. We can provide a quicker and cheaper service. You can also avoid the towing charges of bringing your car to and from the dealership because we are able to come to you. This will also cut down on the time it takes to wait, which is usually up to 10 days. Remotes The remote controls for Fiat vehicles are similar to the keys, but they feature an IR (infrared) LED on the other end. This LED transmits an electronic signal to the device, which allows the vehicle to open or start when it is pressed. The microprocessor in a key converts the signal into a code that is then transmitted to the device. This is referred to as “keyless entry”. The more recent your vehicle is, the more likely it will be to have a keyless entry feature. The more advanced your vehicle has, the more features it 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 more. The key fob is fitted with an integrated circuit chip which communicates with the immobiliser system of the car. The system is able to determine if the correct key is present by looking for a particular sequence of numbers in the transponder chip. The vehicle will not start when the chip isn't present or isn't programmed to the correct immobiliser system. A locksmith can repair the key fob in case it is damaged. They'll also have to program the replacement key to sync with the immobiliser system of your car. You must be prepared to provide your locksmith with information regarding your vehicle when they call. Keyless Entry If you have a keyless entry system on your Fiat 500, you can lock and unlock the car at any time with the push of the button. This technology is becoming more common in cars of all ages and types and can add convenience and security to your vehicle's use. Check to see if your remote keyless entry system is not working. The battery that powers the coin inside the fob may be dead. Replace the battery with one of the same voltage size, type, and size as the original if it has been drained. You should also make sure that the battery's contacts are free of dust or corrosion. The rubber seals on the key fob protect the chip from water. However exposure to prolonged soapy water or salty water could cause the chip to fail. If your key fob has been exposed to water, you must remove it and allow the battery to dry completely before replacing it. You can also clean the electronic component using isopropyl or an electronic cleaner. While some people might believe that keyless entry isn't as secure, the system is actually more secure than other systems because the code that unlocks your car gets rolled up after every use. This means that hackers will not be able to gain access to your vehicle, even if they intercept the signal. Transponders Fiat employs a crypto-key transponder system this means that keys and transponders have to be precoded by the Body Control Module before they are “programmed” by the BCM. This is the reason a blank unwritten key is not able to be programmed as the BCM must read and write its secret key to the transponder, then lock it. This process is called cloning. These are brand new replacement outer case SIP22 transponder keys for your Fiat 500. They have a chip inside that allows you to open the doors and start the car. car key cover fiat 500 will have to cut them to fit your ignition.