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How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key FOB may not function properly. The tiny “watch” inside the key FOB often dies. This is a 3.3 volt lithium, CR2032, that is available anywhere for under $3. A locksmith is the best source to call if you require a new key for your car for a classic Fiat model. United Locksmith can provide this service and will have the tools and spare parts required. Keys On the outside, a Fiat key may appear to be basic however, inside the casing is a chip that communicates with your car's immobiliser system. If the chip isn't in place or programmed to the immobiliser system correctly your car won't start. Luckily, Car Keys Solutions are able to provide standard dealer technology and equipment that will ensure your Fiat key is repaired, even in the event that it has suffered damage or has been lost. The possession of a spare key is the most efficient method to ensure your car is running in the event of a crisis or being locked out. We can supply you with a standard key or a remote fob. We only use the highest quality blanks and offer a fast turnaround so you can get back on the road in no time. Some people will choose to go to an Fiat Dealership when they require a replacement key, but we can provide a less expensive and faster service. We can also come to you and save you the expense of towing your car to the dealer. This will also cut down on the wait time that can be up to 10 days. Remotes Remote controls for Fiat vehicles are similar to the keys themselves, with the exception that they have an IR (infrared) LED at the bottom. The LED transmits an indication to the device that allows the car to open or stop when pressed. The signal is detected by a microprocessor within the key, which converts it into a number that is then sent to the device. This is also known as “keyless entry”. fiat punto key fob replacement is, and the more likely you will have a keyless system. The more modern your car is, the more features you'll probably have with it. This includes locking and unlocking your car with a one touch or opening the doors without touching the handle, and so much more. The key fob is equipped with an integrated circuit chip that communicates with the immobiliser system in the car. The system is able to determine whether the key is genuine by checking a particular sequence in the transponder. If the chip isn't present, or has not been programmed with the correct immobiliser system then the vehicle will not start. A locksmith can replace the key fob in case it is damaged. The locksmith will also need to program the new key to connect with the immobiliser system of your car. This is a crucial aspect of the process, and you should be ready to provide information about your car to your locksmith when they call. Keyless Entry With a keyless entry on your Fiat 500 you can lock or unlock your car with just a touch of an button. This technology is becoming increasingly popular in all kinds of vehicles and provides security and convenience to the usage of your car. Check to see if your remote keyless entry system is not working. The coin battery inside the fob could be dead. If the battery is drained replace it with a fresh one that is of the same voltage, size and type as the original. Also, make sure that the battery's contact points are free of corrosion or dust. The rubber seals on the key fob are designed to protect the electronic chip from water. However prolonged exposure to salty or soapy water can cause the chip to fail. If your key fob has been exposed to water, take it out and allow the battery to dry completely before replacing it. You can also clean the electronic chip with isopropyl alcohol or electronic cleaner. Keyless entry systems are more secure than the traditional systems, because it generates the code that is used to unlock your car after each use. This means that hackers will not be able to gain permanent access to your vehicle even if they intercept the signal. Transponders Fiat uses a crypto key transponder system. This means that the keys and transponders have to be precoded with an encrypted code by the Body Control Module (BCM) before being “programmed” into the BCM. This is why a blank unwritten key cannot be programmed because the BCM has to read & write the secret key to the transponder and then lock it. This process is referred to as the cloning. These are brand new replacement outer cases that replace the SIP22 Transponder keys for Fiat 500. They contain a chip that unlocks the door and opens the vehicle. Locksmiths must cut them to fit the ignition.