How to Repair Fiat 500 Keys There are several reasons why your Fiat 500 key fob may stop working. The small "watch" inside the key FOB is often dead. It's a 3.3-volt lithium CR2032, and you can get it anywhere for less than $3. When you need keys to replace an older Fiat model, a locksmith is the one to contact. United Locksmith offers this service and has all the parts and tools required. Keys On the outside, a Fiat key might appear basic, however inside the casing is a chip that connects to your car's immobiliser system. If this chip is not present or programmed to the immobiliser system correctly then your vehicle won't start. Car Keys Solutions can offer you dealer-standard equipment and technology to repair your Fiat key, regardless of whether the key is damaged or lost. A spare key can keep your vehicle operating in the event of an accident or lockout. It doesn't matter if you require a standard blank or remote fob, we can assist. We only use the highest quality blanks and offer a fast turnaround time so that you can be back to driving quickly. Some customers prefer to visit a Fiat Dealership to get new keys. We can offer the fastest and most affordable service. We can even come to you to save you the expense of towing your vehicle to the dealer. This can also cut down on the waiting period which can take up to 10 days for dealers. Remotes The remote controls for Fiat vehicles look similar to keys, however they feature an IR (infrared) LED on the bottom. This LED transmits an electronic signal to the device which allows the vehicle to open or start when the button is pressed. The signal is picked up by a microprocessor located in the key that converts it to a code that is then sent to the device. This process is known as "keyless entry". The newer your vehicle is and the more likely you are to feature a keyless entry system. The more modern your vehicle, the more features you'll likely get with it. This includes locking and unlocking your car with just pushing a button and opening the doors with out touching the handle, and much more. The key fob is equipped with an integrated circuit chip that communicates with the immobiliser system of the car. The system determines whether the key is working by checking a particular sequence of the transponder. If the chip is not present, or has not been programmed to the correct immobiliser system, the vehicle will not begin. If the key fob is damaged, a locksmith can create a replacement. The locksmith will also have to program the new key to link with the immobiliser system of the car. You should be prepared to provide your locksmith details regarding your vehicle whenever 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 vehicles of all ages and models as it provides convenience and safety to the vehicle's usage. Check to see if the remote keyless entry system is not working. The battery in the fob could be dead. If the battery is depleted replace it with a fresh one that has the same voltage, size and type as the original. You should also make sure that the battery's contacts are free of corrosion or dust. https://www.thekeylab.co.uk/fiat-car-keys/ on the key fob guard the electronic chip from water. However, prolonged exposure to soapy water or salty water could cause the chip to fail. If your key fob has been exposed to water, you must remove it and allow the battery to dry completely before replacing it. You can also clean the electronic chip with isopropyl alcohol or an electronic cleaner. While some people might believe that keyless entry is less secure, the system is actually more secure than other systems because the code that unlocks your car gets rolled up after every use. This means that even if hackers are able to intercept the signal and attempt to access your car, they won't be able to gain access to your vehicle. Transponders Fiat uses a crypto keys transponder system. This means that the keys/transponders have to 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 is not able to be programmed, because the BCM must read and write the secret key to the transponder before locking it. This process is called"cloning. These are new replacement outer cases to replace SIP22 Transponder keys for Fiat 500. They contain a chip that opens the doors and starts the car. They will need to be cut professionally by a locksmith to match your ignition.