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How to Repair Fiat 500 Keys There are a myriad of reasons your Fiat 500 key fob may cease to function. The small “watch” inside the key FOB will often fail. It's an 3.3 volt lithium, CR2032, which is available anywhere for under $3. A locksmith is the ideal source to call if you need a new car key for the classic Fiat model. United Locksmith offers this service, and has all the parts and tools needed. Keys On the outside a Fiat key may appear simple however inside the casing is a chip that connects to your car's immobiliser system. If this chip is not present or programmed to the immobiliser system correctly the car will not start. Car Keys Solutions can offer you dealer-grade equipment and technology to repair your Fiat key, even if the key has been damaged or lost. A spare key can keep your vehicle operating in the event of an accident or lockout. We can provide you with a standard blank key or a remote fob. We only use the highest quality blanks, and we offer a rapid turnaround so you can get back to driving quickly. A few people choose to go to a Fiat Dealership if they require a replacement key, but we can offer a lower cost and faster service. You can also avoid the cost of towing your vehicle from and to the dealership because we can bring it to you. This will also cut down on the wait time that can be up to 10 days. Remotes The remote controls of Fiat vehicles are like keys, however they feature an IR LED (infrared). This LED transmits signals to the device that allows the car to open or stop when pressed. The microprocessor inside the key converts the signal into a code that is then sent to device. This is known as “keyless entry”. The more recent your vehicle is, the more likely you will have an electronic keypad. The more recent your car, the more features you'll probably have with it. This includes locking and unlocking your car at the one touch, opening the doors without touching the handle, and so much more. The key fob is fitted with an integrated circuit chip which communicates with the immobiliser system in the car. The system can determine whether the correct key is in place by examining a specific sequence of digits in the transponder chip. The vehicle won't start in the event of a chip being missing or isn't programmed to the correct immobiliser system. When the key fob is damaged, a locksmith can make a replacement. The locksmith will also need to program the new key to sync up with the immobiliser system of your vehicle. This is a crucial part of the process, and you should be ready to provide information about your vehicle to the locksmith if they contact you. Keyless Entry With a keyless entry system on your Fiat 500 you can lock or unlock the vehicle at the touch of the button. This technology is becoming increasingly popular in all kinds of vehicles which adds convenience and security to the use of your vehicle. If your remote keyless entry system ceases to function Check to see whether the battery in the fob is dead. If the battery is empty replace it with a fresh one with the same voltage, size, and type as the original. You should also ensure that the battery's contacts are free of corrosion or dust. The rubber seals on the key fob guard the chip from water. However prolonged exposure to salty or soapy water may cause the chip to fail. If how you can help is exposed to water, remove the battery and allow it to dry completely before putting it back in. You can also try cleaning the electronic chip using isopropyl alcohol or an electronic cleaner. The keyless entry system is more secure than conventional systems because it rolls up the code that is used to unlock your vehicle after every use. This means that hackers will not have the ability to gain permanent access to the vehicle even when they intercept the signal. Transponders Fiat uses a crypto keys transponder system, which means that the keys/transponders must be precoded with a secret code generated by the Body Control Module (BCM) before being “programmed” into the BCM. This is why a blank unwritten key is not able to be programmed as the BCM must read and write it's secret key to the transponder, then lock it. This is known as the process of cloning. These are brand new replacement outer case SIP22 transponder keys that fit your Fiat 500. They have a chip inside that allows you to open the doors and start the car. Locksmiths will need to cut the chip to fit your ignition.