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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 will often fail. It's a 3.3-volt lithium CR2032, and you can get it for less than $3. If you require the replacement key for an older Fiat model locksmith is the one to contact. United Locksmith offers this service, and has all the tools and parts needed. replacement key fiat 500 TheKeyLab may appear to be simple, but inside is a chip that communicates with the immobiliser system of your car. If the chip isn't present or programmed to the immobiliser system correctly then your vehicle will not 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. The possession of a spare key is the best way to keep your car running in the event of an emergency or being locked out. If you require a standard blank or remote fob we can help. We use the best quality blanks and provide quick turnaround so that you can get back on the road as quickly as possible. A few people choose to visit a Fiat Dealership when they require a new ignition key, but we can offer you a cheaper and faster service. We can also come to you and save you the expense of towing your vehicle to the dealer. This can also cut out the waiting time, which can take up to 10 days for dealers. Remotes Remote controls for Fiat automobiles look a lot like the keys, but they feature an IR (infrared) LED on the end. The LED transmits an IR signal to the device which allows the car to open or stop when pressed. The microprocessor inside the key transforms the signal into a number that is then sent to the device. This is referred to as “keyless entry”. The more recent your car is, the more likely to include a keyless entry system. The more modern your car is and the more features you'll likely have. This includes locking and unlocking your car with a a push of a button and opening the doors with out touching the handle, and so much more. The key fob comes with an integrated circuit chip which communicates with the immobiliser system of the car. The system can determine whether the key is working by checking a particular sequence of the transponder. If the chip isn't present, or has not been programmed to the correct immobiliser system, the vehicle will not start. If the key fob has been damaged, a locksmith will make a replacement. The locksmith will also have to program the new key to connect with the immobiliser system of your vehicle. This is an essential part of the procedure, and you must be prepared to provide details about your vehicle to your locksmith if they contact you. Keyless Entry With the keyless entry option on your Fiat 500 you can lock or unlock the car with the touch of a button. This technology is becoming increasingly popular in all types of cars which adds convenience and security to the usage of your vehicle. Verify that your remote keyless entry system is not working. The coin battery inside the fob could be depleted. If the battery is empty replace it with a new one that is of the same size, voltage and type as the original. You should also ensure that the contacts of the battery are free of dust or corrosion. The key fob is fitted with rubber seals to protect the chip inside from water, but prolonged exposure to salty or soapy water may cause the chip to fail. If your key fob has been exposed to water, you must remove it and let the battery dry completely before replacing it. You can also clean the electronic chip using isopropyl alcohol or an electronic cleaner. Keyless entry systems are more secure than traditional systems, because it rolls up the code used to unlock your car after every use. This means that hackers will not be able to gain access to the vehicle even when they intercept the signal. Transponders Fiat uses a crypto key transponder system which means that keys/transponders need to be precoded by the Body Control Module before they are “programmed” within the BCM. A blank key that has not been programmed cannot be programmed as the BCM must read and write the secret key into the transponder before locking it. This is referred to as the cloning. These are brand new replacement outer case SIP22 transponder keys to your fiat 500. They contain a chip that opens the doors and also starts the car. Locksmiths must cut them to fit the ignition.