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How to Repair Fiat 500 Keys There are a few reasons why your Fiat 500 key FOB may stop working. The small “watch” inside the key FOB often dies. It's a 3.3 volt lithium battery, CR2032, which you can purchase almost anywhere for under $3. When you need a replacement key for an older Fiat model locksmith is the one to contact. United Locksmith can provide this service and has the tools and replacement parts needed. Keys Fiat keys might appear simple however inside is an electronic chip that connects to the immobiliser system in your vehicle. If the chip isn't present, or is not properly programmed to the immobiliser, your car will not be able to start. Luckily, Car Keys Solutions are able to provide standard dealer technology and equipment that will ensure your Fiat key can be repaired if it has suffered damage or has been lost. A spare key is the most efficient method to ensure your car is running in the event of an emergency or being locked out. It doesn't matter if you require an ordinary blank or a remote fob, we can help. We use only the highest-quality blanks and provide an immediate turnaround time so that you get back on the road quickly. Some people choose to visit an Fiat Dealership to purchase new keys. We can offer an easier and less expensive service. You'll also save the towing costs of getting your car to and from the dealership as we are able to come to you. This can also decrease the waiting time, which can last up to 10 days at a dealer. Remotes The remote controls on Fiat vehicles are similar to keys, but they have an IR LED (infrared). This LED transmits signals to the device which opens or starts the car when it is pressed. The microprocessor in the key transforms the signal into a code which is then sent to the device. This process is known as “keyless entry”. The more recent your car is and the more likely it is to have a keyless entry feature. The more advanced your vehicle has, the more features will come with. This includes locking and unlocking your car with the a push of a button, opening the doors without touching the handle, and much more. The key fob comes with an integrated circuit chip that connects to the immobiliser system in the car. The system will determine whether the key is in fact correct by examining a specific sequence in the transponder. If the chip is not present, or has not been programmed to the correct immobiliser system the vehicle won't start. When the key fob is damaged, a locksmith can create a replacement. The locksmith will also have to program the new key so that it can sync up with the immobiliser of the car. It is important to give your locksmith information regarding your vehicle when they call. Keyless Entry If you have an entry system that is keyless on your Fiat 500, you can lock and unlock your car from anywhere with a push of a button. This technology is becoming increasingly popular in all kinds of vehicles, and adds convenience and security to the operation of your vehicle. If your remote keyless entry system isn't working examine whether the battery for the coin in the fob is dead. Replace the battery with a newer one with the same voltage size, type, and size as the original one if it is drained. Also, ensure that the contacts of the battery are free of dust or corrosion. The rubber seals on the key fob shield the chip from water. However prolonged exposure to soapy water or salty water could cause the chip to fail. If your key fob is exposed to water, you must remove the battery and let it dry completely before putting it back in. You can also clean the electronic chip using isopropyl and electronic cleaner. The keyless entry system is more secure than conventional systems, because it rolls up the code used to unlock your car after each use. This means that even if hackers intercept the signal it isn't possible for them to gain access to your car. Transponders Fiat uses a crypto key transponder system, which means that the keys/transponders have to be encoded with a secret code generated by the Body Control Module (BCM) before being “programmed” into the BCM. A key that is blank and has not been programmed cannot be done because the BCM must read and write its secret code onto the transponder before locking it. This is known as cloning. fiat 500 replacement key fob are brand new replacement outer cases to replace SIP22 Transponder keys for Fiat 500. They contain a chip that opens the door and then starts the vehicle. They must be professionally cut by a locksmith to fit your ignition.