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How to Repair Fiat 500 Keys There are a variety of reasons why your Fiat 500 key FOB may stop working. One of the most frequent is the tiny “watch” battery inside it that fails. It's a 3.3 Volt lithium, CR2032, is available anyplace for less than $3. If you require a new key for an older Fiat model, a locksmith is the right person to call. United Locksmith can provide this service and will have the tools and spare parts needed. Keys On the outside a Fiat key may seem basic but inside the casing is a chip that connects to your car's immobiliser system. If the chip is not present, or is not properly programmed to the immobiliser, your car won't be able start. Fortunately, Car Keys Solutions are able to offer standard technology and equipment that will ensure your Fiat key is repaired, even the damage it sustained or has been lost. A spare key will keep your vehicle in case of an accident or lockout. No matter if you need an ordinary blank or a remote fob, we are able to assist. We only use the top blanks and provide a quick turnaround time so that you can be back on the road quickly. Some people will choose to go to an Fiat Dealership when they require a replacement key, but we are able to offer you a cheaper and quicker service. You will also save on the towing charges of bringing your vehicle to and from the dealership since we are able to come to you. This will also reduce the waiting time, which can take up to 10 days at a dealer. Remotes The remote controls for Fiat vehicles are similar to the keys themselves, except they feature an IR (infrared) LED on the other end. This LED transmits an IR signal to the device which opens or turns off the car when you press. The microprocessor inside a key converts this signal into a code, which is then sent to the device. This process is called “keyless entry”. The more recent your car is, the more likely it will be to feature a keyless entry system. replacement key for fiat 500 is has, the more features you'll probably have with it. This includes locking and unlocking your car with just a push of a button and opening the doors without touching the handle, and so much more. The key fob comes with an integrated circuit chip that communicates with the immobiliser system in the car. The system will determine if the key is correct by checking a particular sequence within the transponder. If the chip isn't present, or if it is not programmed to the correct immobiliser system the vehicle will not start. A locksmith can replace the key fob if it is damaged. They'll also need to program the replacement key to connect with the vehicle's immobiliser. This is an essential part of the process, and you should be prepared to provide details regarding your vehicle to your locksmith when they call. Keyless Entry If you have keys-less entry on your Fiat 500, you can lock and unlock the vehicle from anywhere with a push of one button. This technology is becoming more widespread in all cars of all types and ages and adds convenience and security to the vehicle's usage. If your remote keyless entry system isn't working 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 one that came with it if it has been drained. It is also important to ensure that the battery's contacts are free of corrosion or dust. The key fob is fitted with rubber seals to protect the chip from water however, prolonged exposure to soapy or salty water could cause the chip to fail. If your key fob is exposed to water, you must remove the battery and allow it to dry completely before putting it back into. You can also clean the electronic chip with isopropyl and electronic cleaner. Keyless entry systems are more secure than conventional systems, because it rolls up the code used to unlock your vehicle after each use. This means that even if hackers intercept the signal, they won't be able to gain permanent access to your vehicle. Transponders Fiat utilizes a crypto key transponder, which means that keys/transponders must be precoded with a secret code by the Body Control Module (BCM) before being “programmed” into the BCM. This is the reason why an unwritten key cannot be programmed, because the BCM has to read & write it's secret key to the transponder before locking it. This is known as cloning. These are new replacement outer case OE SIP22 transponder key for your fiat 500. They have a chip that opens the door and begins the vehicle. They will need to be cut professionally by a locksmith to fit your ignition.