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How to Find a Fiat 500 Spare Key Fiat's 500 is something of an iconic vehicle since its relaunch in 2007. The company has since kicked off a larger campaign towards different engines with a mild-hybrid version. The replacement of key fob batteries on a Fiat 500 are simple and inexpensive. It takes about 10 days for the key to be delivered from the Fiat main dealer. Diagnostics of a fault The key fob is equipped with an electronic chip which communicates with the Fiat immobiliser system. This makes sure that only authorized vehicles can start the car. If the transponder chip on your key fob is damaged, it won't be able to connect to the immobiliser unit, and this means that your car won't start. It is possible to repair a key fob that has been broken, as long as the chip is not physically damaged. Locksmiths who are professionals will use dealer-standard technologies to repair it swiftly. Using an OBD scanner, it is possible to verify if the fob is still communicating with the receiver module. This is a simple procedure and provides an initial indication of where the problem lies. If the OBD scanner shows that there is no communication between the receiver and transmitter modules, it could be required for the fob's transceiver module to be replaced. This could be a costly option, and it's best left to a professional locksmith. Dead Coin Battery The most common reason for a key fob that isn't working is a dead battery. It's an easy fix that takes about 15 minutes. Check that the key fob can be seen by your vehicle. Press the “Lock” and “Unlock” buttons to see whether they respond. If the key fob isn't in range, it might not respond at all or might only work intermittently. This could be an indication of a damaged circuit board. You'll need to refer to the owner's manual to find out on how to reprogram the keyfob in this case. You can replace the battery by getting rid of the mechanical latch on the back of the fob (see the image below). Then, gently lift the edge of the battery holder in front of the switch and remove the old coin cell battery. Install a brand new 3-volt #CR2032 battery into the fob with the “+ side” facing to the rear cover, and the “– side” facing downwards towards the buttons made of rubber. Water Damage While the key fob is fitted with rubber seals that keep water from the electronic chip inside, it's not waterproof. The key fob may be fine in the event of water from a shower or water from a wash cycle, however, submerging the device in water from the ocean or pool is not recommended. If the key fob is exposed to water and fails to function it must be reset. You can follow the instructions in the owner's manual or bring it to an expert locksmith or Fiat dealer. A fob that is not in range may stop working. Key fobs usually have a range of about 30 feet, and if they're too far away from the car, it won't recognize them. The first thing to try is to get closer to your vehicle. If it doesn't work, the key fob's battery may require replacement. thekeylab.co.uk can find battery replacement instructions for the majority of automobiles on YouTube or in the owner's manual. It is a good idea to think about purchasing a replacement key fob in case yours is beginning to look shabby and scratched. Faulty Receiver Module Modern models of Fiat do not require a physical key in order to start or open the car. The cars are equipped with the key fob which sends an electrical signal to the car that turns off and on the engine. Locksmiths can fix the broken key fob. You will save time and money by leaving this task to professionals. They can also create a new key for your Fiat. If you are looking for an extra key for your Fiat vehicle, you'll have to provide the locksmith details about the car over the phone. For instance, you'll be required to give the year of production for your car and the name of the model. This is crucial because the locksmith will require this information to make sure that the new key works with the locks in place. 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 will allow you to be sure that the new key will work with your car and you won't waste money. Unpaired Key The most frequent reason for a key fob that isn't working is a dead coin battery. The key fob has metallic clips which hold the battery in place and are part of the circuit. When these become worn or loose, it could cause contact problems and no power. Replace the battery with the same one, but with a different design. It is essential to dry out the key fob if it has been submerged in liquid. This can be done with isopropyl or an electronic cleaner. It is also recommended to remove the battery and clean the circuit board and replace it prior to replacing. If you are unable to find a spare key, your best option is to call a locksmith. A qualified locksmith can reprogram a Fiat transponder keys without having to view the original keys. This is a far cheaper and faster 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 feasible.