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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 tiny “watch” inside the key FOB can fail. This is an 3.3 Volt lithium battery, CR2032, which you can purchase almost anyplace for less than $3. A locksmith is the best source to call if you require a replacement car key for a classic Fiat model. United Locksmith can provide this service and will have the tools and replacement parts required. Keys Fiat keys might 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. fiat 500 replacement key can offer you the latest technology and equipment from dealers to repair your Fiat key, regardless of whether the key is damaged or lost. A spare key is the best method to keep your car running in the event of a disaster or being locked out. We can provide you with a standard blank key or a remote fob. We only use the best blanks, and we offer a rapid turnaround so you can get back to driving quickly. Some people will choose to go to a Fiat Dealership when they require a new ignition key, but we can offer you a cheaper and quicker service. You will also save on the towing charges of bringing your vehicle from and to the dealership because we can bring it to you. This can also decrease the wait time which can range from a few days to 10 days. Remotes The remote controls on Fiat vehicles are similar to keys, but they feature an IR LED (infrared). This LED sends an IR signal to the device that allows the car to open or stop when pressed. The signal is picked up by a microprocessor in the key which converts it to a code that is then transmitted to the device. This process is called “keyless entry”. The more modern your vehicle and the more likely to feature a keyless entry system. The newer your vehicle is and the more features you'll likely find in it. This includes everything from locking and unlocking your car using a button and opening the doors without having to actually reach the door handle and more. The key fob is outfitted with an integrated circuit chip which communicates with the immobiliser system in the car. The system can determine if the correct key is present by looking for a particular sequence of numbers in the transponder chip. The vehicle won't start if the chip is missing or when it's not programmed with the correct immobiliser system. If the fob for the key is damaged, a locksmith can create a new one. The locksmith will also have to program the new key to connect with the immobiliser system in the vehicle. It is recommended to provide your locksmith's details regarding your vehicle when they call. Keyless Entry With a keyless entry feature on your Fiat 500 you can lock or unlock the car with just a touch of a button. This technology is becoming more popular in all cars of all kinds and ages and can add convenience and safety to your vehicle's use. If your remote keyless entry system fails to work examine if the coin battery in the fob has gone dead. Replace the battery by using a newer one that has the same voltage size, type, and size as the original if it's depleted. It is important to 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 exposure to prolonged salty or soapy water could cause the chip to fail. If your key fob has been exposed to water, take out the battery and allow it to dry completely before putting it back in. You can also clean the electronic chip with isopropyl ethanol or electronic cleaner. The keyless entry system is more secure than conventional systems, as it generates the code that is used to unlock your vehicle after each use. This means that even if hackers intercept the signal it isn't possible for them to gain 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” within the BCM. This is why an unwritten key is not able to be programmed, because the BCM has to read & write the secret key to the transponder, then lock it. This is referred to as cloning. These are brand new replacement outer cases that replace the SIP22 Transponder keys for Fiat 500. They contain a chip that opens the doors and also starts the car. Locksmiths need to cut them to fit the ignition.