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How to Repair Fiat 500 Keys There are a variety of reasons your Fiat 500 key FOB may cease to function. One of the most common is the small “watch” battery that's inside dies. It's a 3.3 Volt lithium, CR2032, you can purchase almost anywhere for under $3. A locksmith is the ideal option to contact if you need a new car key for the classic Fiat model. United Locksmith can provide this service and will have the tools and replacement parts required. Keys Fiat keys may appear simple but inside is a chip that communicates with the immobiliser system of your car. If the chip isn't in place or programmed to the immobiliser system properly your car won't start. Car Keys Solutions can offer you dealer-standard equipment and technology to repair your Fiat key, regardless of whether the key has been damaged or lost. A spare key is the best way to keep your car running in the event of an emergency or being locked out. Whether you need an ordinary blank or a remote fob, we can help. We use the best quality blanks we can find and provide rapid turnaround time to ensure you get back on the road quickly. Some people will choose to go to a Fiat Dealership if they require a new ignition key, but we can provide a less expensive and faster service. Additionally, you will save the towing costs of getting your car from and to the dealership, as we can come to you. This can reduce the time it takes to wait that can be up to 10 days. Remotes The remote controls on Fiat vehicles look similar to the keys, but they have an IR (infrared) LED on the end. This LED transmits an IR signal to the device that opens or starts the car when you press. The microprocessor inside the key converts the signal into a code that is then sent to the device. This process is known as “keyless entry”. The newer your vehicle is, the more likely you are to feature a keyless entry system. The more advanced your vehicle has, the more features it will come with. This includes everything from locking and unlocking the car with a button press, to opening the doors without having to reach the door handle and much more. The key fob is equipped with an integrated circuit chip which communicates with the immobiliser system in the car. The system is able to determine whether the key is working by checking a specific sequence of the transponder. If the chip is not present, or if it has not been programmed to the correct immobiliser system, then the vehicle will not start. If the fob for the key is damaged, a locksmith is able to make a replacement. The locksmith will also need to program the new key to connect up with the immobiliser system of your vehicle. You should be prepared to provide your locksmith with information regarding your vehicle when they call. Keyless Entry With a keyless entry feature on your Fiat 500 you can lock or unlock the vehicle at the touch of one button. This technology is becoming more common in cars of all kinds and ages as it provides security and convenience to your car's use. If your remote keyless entry system fails to work, check to see if the coin battery in the fob has died. If the battery is drained, replace it with a fresh one that has the same size, voltage and type as the original. It is also important to ensure that the contacts of the battery are free of corrosion or dust. The key fob comes with rubber seals to protect the electronic chip from water, but prolonged exposure to soapy or salty water can 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 into. spare fiat 500 key can also clean the electronic chip with isopropyl alcohol or electronic cleaner. Keyless entry systems are more secure than traditional systems, since it generates the code that is used to unlock your vehicle after every use. This means that even if hackers are able to intercept the signal it isn't possible for them to gain access to your car. Transponders Fiat utilizes a crypto key transponder system. This means that the keys or transponders must be encoded with a secret code generated by the Body Control Module (BCM) before being “programmed” into the BCM. This is why a blank unwritten key cannot be programmed as the BCM must read and write it's secret key to the transponder, then lock it. This process is called cloning. These are new replacement outer cases OE SIP22 Transponder keys for Fiat 500. They come with a chip that unlocks the doors and opens the car. Locksmiths need to cut the chip to fit your ignition.