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How to Repair Fiat 500 Keys There are many reasons why your Fiat 500 key fob may cease to function. The small “watch” inside the key FOB often dies. It's a 3.3-volt lithium CR2032 and you can find it at a price of less than $3. When you need a replacement key for an older Fiat model, a locksmith is the person to contact. United Locksmith can provide this service and also has the tools and replacement parts needed. Keys Fiat keys may look simple, but inside is a chip that is communicating with the immobiliser system in your vehicle. If this chip is not present or programmed to the immobiliser system correctly then your vehicle will not start. Luckily, Car Keys Solutions are able to offer standard technology and equipment to ensure that your Fiat key can be repaired, even the damage it sustained or is lost. A spare key will keep your vehicle running in the event of an accident or lockout. It doesn't matter if you require an ordinary blank or a remote fob, we are able to assist. We use only the highest-quality blanks and provide quick turnaround so that you get back on the road in a hurry. Some people prefer to go to an Fiat Dealership when they require a replacement key, but we can provide a less expensive and quicker service. Additionally, you will save the towing charges of bringing your car from and to the dealership because we are able to come to you. This will also reduce the waiting time which is often up to 10 days at a dealer. Remotes The remote controls on Fiat vehicles look similar to the keys themselves, with the exception that they have an IR (infrared) LED on the other end. The LED transmits an IR signal to the device that opens or turns off the car when you press. The microprocessor inside the key transforms the signal into a code, which is then sent to device. fiat 500 replacement key fob is referred to as “keyless entry”. The more modern your car is, the more likely you will have keysless entry. The newer your vehicle is has, the more features you'll likely get with it. This includes everything from locking and unlocking your vehicle with a single press and opening the doors without having to touch the door handle and many more. The key fob is equipped with an integrated circuit chip that communicates with the immobiliser system of the car. The system is able to determine whether the key is in fact correct by checking a certain sequence of the transponder. If the chip isn't there, or if it is not programmed to the correct immobiliser, the vehicle will not start. A locksmith can replace the key fob in case it's damaged. They'll also need to program the replacement key to sync with the vehicle's immobiliser. It is important to provide your locksmith details regarding your vehicle when they call. Keyless Entry With the keyless entry option on your Fiat 500 you can lock or unlock the vehicle with just a touch of one button. This technology is becoming increasingly popular in all kinds of vehicles which adds convenience and security to the use of your vehicle. Check to see if the remote keyless entry system is not working. The battery that powers the coin inside the fob could be depleted. If the battery is depleted, replace it with a new one that has the same voltage, size and type as the original. Also, ensure that the contacts of the battery are free of corrosion or dust. The rubber seals on the key fob shield the electronic chip from water. However exposure to prolonged salty or soapy water can cause the chip to fail. If your key fob is exposed to water, take out the battery and let it dry completely before putting it back in. You can also clean the electronic component using isopropyl or an electronic cleaner. While some people may believe that keyless entry is less secure, the system is actually more secure than traditional systems due to the fact that the code used to unlock your car gets rolled up after every use. This means that hackers won't be able to gain access to the vehicle even if they intercept the signal. Transponders Fiat uses a crypto keys transponder, which means that keys/transponders must be encoded with a secret code generated 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 has to read & write its secret key to the transponder, then lock it. This process is referred to as the cloning. These are brand new replacement outer case SIP22 transponder keys that fit your Fiat 500. They contain a chip that opens the doors and starts the car. Locksmiths will have to cut them to fit your ignition.