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How to Find a Fiat 500 Spare Key Fiat's iconic Fiat 500 has become a symbol since its relaunched in 2007. The company has since kicked off a bigger offensive towards different powertrains with a mild-hybrid version. Replacing the battery for the key fob on a Fiat 500 is straightforward and affordable. It takes around 10 days for the key to be handed over from the Fiat main dealer. Fault Diagnosis The key fob is equipped with an electronic chip that communicates with the Fiat immobiliser system to ensure that only authorised vehicles are able to start engines. If the transponder chip inside your key fob is damaged, it won't be able to connect to the immobiliser unit which means that your car won't be able to start. The good thing is that it's possible to fix a damaged key fob, as long as the chip is not physically damaged. A professional locksmith will utilize dealer-standard technologies to repair it quickly. With an OBD scanner, it is possible to determine if your fob is still communicating with the receiver module. It's a simple process and can provide an initial indication of the root cause. If the OBD scanner reports that there is no communication between the receiver and transmitter modules, it might be necessary for the fob's transmitter module to be replaced. This is a cost-effective option and should be left to locksmiths. Dead Coin Battery The most frequent reason for a key fob not working is a dead coin battery. This is an easy fix that takes only a few minutes. First, ensure that the key fob is within range of your vehicle. Then, press the “Lock” or “Unlock” button to check if it responds. The key fob may not function at all, or perhaps only intermittently, if out of range. This could be a sign of a damaged circuit board. In this situation you'll need to check your owner's manual for instructions on how to reprogram the key fob. The mechanical latch can be removed from the back of the key fob. (See the image below). Then, gently remove the edges of the battery holder, close to the switch, and remove the old battery. Insert a new #CR2032 3 volt battery into the fob with the “+ side” facing the cover on the rear and the “– side” facing downwards towards the rubber buttons. Water Damage Although the key fob comes with rubber seals that keep water out of the chip, it's not waterproof. The key fob may be fine with the splash of rain or water from a wash cycle but submerging it in pools or ocean waters is not recommended. If the key fob is exposed to water and stops functioning it must be reset. This can be accomplished using the instructions found in the owner's guide or by taking it to a professional auto locksmith or an Fiat dealer. Another common reason a fob might stop working is that it's not in the range of your car. The range of the fob's range is typically about 30 feet. If they are too far from your vehicle, it will not recognize them. in the know is to move closer to your vehicle. If this doesn't work, then the battery for your key fob may need to be replaced. There are instructions on how to replace the battery on most vehicles on YouTube or by reading the owner's manual. If your key fob looks scuffed and dented, it's time to replace it. Faulty Receiver Module Modern Fiat models do not require a physical key in order to start or open the car. The cars are equipped with a remote control which sends an electronic message to the car to turn the engine off and on. A locksmith can repair the broken key fob. You will save time and money by entrusting this work to the professionals. They can also program the new key for your Fiat. You will need to provide the locksmith with some details over the phone if you require a spare Fiat key. You'll need to provide the locksmith details regarding your car, such as the year of its production and the model. This is vital as locksmiths require it to ensure that the new key is compatible with the existing locks. Not all locksmiths can make replacement keys for Fiat automobiles. Look for a locksmith with an established track record and expertise in the field. This means you can be certain that the new key will work with your vehicle and you won't be wasting money. Keys that are not paired If you have a key fob that isn't working, the most frequent reason is the battery is dead. The key fob has metal clips for retaining the button cell in place and complete the circuit therefore, if they wear out or loose it can cause contact issues and the loss of power. Replace the battery with a fresh one with the same size, voltage, and specifications, or get a spare. It is crucial to dry out the key fob in case it has been submerged in liquid. This can be done with isopropyl or electronic cleaner. It is also advisable to take the battery off and clean the circuit board before replacing it. Contacting locksmiths is the best choice if you can't find an extra. A licensed locksmith can reprogram the Fiat transponder key without having to view your original keys. This is a much less expensive and quicker solution than waiting for an authentic Fiat key to arrive from Italy. A professional locksmith is equipped with all the tools and equipment to replace your key as quickly as is possible.