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How to Repair Fiat 500 Keys There are several reasons your Fiat 500 key FOB may stop working. The small “watch” inside the key FOB is often dead. It's an 3.3 voltage lithium, CR2032, that can be purchased almost anywhere for under $3. A locksmith is the best source to call if you need a new car key for an old Fiat model. United Locksmith can provide this service and will have the tools and replacement parts required. Keys Fiat keys may appear to be simple, but inside is a chip that is communicating with the immobiliser system of your car. If this chip is not in place or programmed to the immobiliser system properly then your vehicle will not start. Car Keys Solutions can offer you dealer-grade equipment and technology to repair your Fiat key, even if the key has been damaged or lost. A spare key can keep your vehicle running in the event of an accident or lockout. Whether you need a standard blank or a remote fob, we can assist. We use only the highest-quality blanks that are available and offer a fast turnaround to ensure you can get back on the road as quickly as possible. Some people choose to visit Fiat Dealerships to obtain new keys. We can offer an easier and less expensive service. You'll also save the towing charges of bringing your vehicle from and to the dealership because we can bring it to you. This can also decrease the waiting time which can be anywhere from 5 to 10 days. Remotes Remote controls for Fiat automobiles look a lot like keys, however they have an IR (infrared) LED at the top. The LED sends an indication to the device which opens or starts the car when pressed. The signal is detected by a microprocessor inside the key that converts it to a code that is then transmitted to the device. fiat key fob replacement is also known as “keyless entry”. The newer your vehicle is and the more likely you are to feature a keyless entry system. The more advanced your vehicle has, the more features it will come with. This includes locking and unlocking your car with a a push of a button and opening the doors without touching the handle, and so much more. The key fob is fitted with an integrated circuit chip which communicates with the immobiliser system of the car. The system can determine if the correct key is in place by examining a specific sequence of digits inside the transponder chip. If the chip isn't there, or if it isn't programmed to the correct immobiliser system, then the vehicle will not begin. A locksmith can replace the key fob if it is damaged. They will also have to program the replacement key to sync with the car's immobiliser system. It is recommended to give your locksmith information about your vehicle when they call. Keyless Entry If you have an entry system that is keyless on your Fiat 500, you can lock and unlock the car at any time with the push of the button. This technology is becoming more popular in cars of all types and ages and adds convenience and safety to your vehicle's use. If your remote keyless entry system fails to work Check to see whether the battery in the fob has died. If the battery is depleted, replace it with a new one that is the same voltage, size, and type as the original. You should also ensure that the battery's contacts are free of dust or corrosion. The rubber seals on the key fob guard the chip from water. However exposure to prolonged salty or soapy water can 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 using isopropyl alcohol or electronic cleaner. While some people might 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 even if hackers do intercept the signal that they receive, they will not be able to gain permanent access to your vehicle. Transponders Fiat uses a crypto key transponder system which means the keys/transponders must be encoded with a secret code that is generated by the Body Control Module (BCM) before being “programmed” into the BCM. A key that is blank and has not been programmed cannot be programmed because the BCM must read and write its secret code onto the transponder before locking it. This is known as cloning. These are brand new replacement outer case SIP22 transponder key for your Fiat 500. They have a chip inside that opens the doors and starts the car. They will need to be cut professionally by a locksmith to fit your ignition.