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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 now launched an additional attack against different powertrains, including a hybrid version. Replacing the battery for the key fob on a Fiat 500 is straightforward and cost-effective. The Fiat main dealer will supply the key in 10 days. Fault Diagnosis The key fob is equipped with an electronic chip that communicates with the Fiat immobiliser system to ensure that only authorized vehicles can start the engine. If the transponder chip within the key fob is damaged, it won't be able to link up to the immobiliser unit, and as a result, your car will refuse to start. It is possible to repair a key fob that has been damaged, as long as the chip is not physically harmed. A professional locksmith can assist in this regard, and will make use of dealer-standard technology to fix it quickly and efficiently. It is possible to utilize an OBD scanner to see whether your fob is in communication with the receiver module. This is a simple process that can give first indications of the root cause. If the OBD scan tool shows that communication between the transmitter and receiver modules isn't working, it may be necessary to replace the fob's transmitter module. This is a costly option and should be left to a locksmith. Dead Coin Battery A dead battery for the coin is the most common reason for the key fob to not work. This is a simple fix that only takes about a couple of minutes. Check that the key fob is visible to your vehicle. Press the “Lock” and “Unlock” buttons to check whether they respond. The key fob may not work in any way, or just intermittently, if it is out of range. This could also be an indication that the circuit board inside the key fob is damaged. In this situation you'll need to refer to 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 pry out the edge of the battery holder near the switch and remove the old battery. Then, put a new # CR2032 3 volt batteries into the fob holder with the “+” side facing towards the rear cover of the key fob with the “side facing down towards the key fob with the ” side facing down towards the rubber buttons. Water Damage Although the key fob has rubber seals that keep water from the chip inside, it's not waterproof. A splash of water from rain or washing cycle is likely to be okay but submerging it fob in ocean or pool water will probably damage it. The key fob will have to be reprogrammed if it is exposed to water. You can follow the instructions in your owner’s manual, or bring it to an expert locksmith or Fiat dealer. A fob that is out of the range of operation may stop working. The range of a key fob is usually around 30 feet. If they're too far away from your car, it may not recognize them. The first thing to try is to move closer to your car. If this doesn't work, you may require replacing the key fob. You can find battery replacement instructions for a variety of vehicles on YouTube or in the owner's manual. If your key fob appears damaged and scratched, then it's time to replace it. Faulty Receiver Module In more modern models of Fiat cars there is no need for a physical key to open the car or start it. The cars are equipped with a remote control which sends an electronic message to the car in order to turn the engine off and on. Locksmiths can fix the broken key fob. You will save time and money by leaving this work to the professionals. They can also program the new key for your Fiat. If you're getting an additional key for your Fiat vehicle, you'll need to give the locksmith some details about your car over the phone. For instance, you'll be required to mention the year of manufacture of your car, along with the model's name. This is vital because the locksmith will require this information to ensure that the new key works with the existing locks. Not all locksmiths can create replacement keys for Fiat automobiles. Find a locksmith with an excellent track record and experience in the field. You can be certain that the key will work with your vehicle and you won't be wasting money. Keys that are unpaired If you have a key fob that has stopped working, the most frequent reason is an unresponsive coin battery. The key fob has clips made of metal that hold the button cell in place and complete the circuit, so when these are worn or loose it can lead to contact problems and the loss of power. Replace the battery by another, identical one. If the key fob was submerged in water, it's vital to dry it before inserting it back into the device. This can be accomplished by using isopropyl or electronic cleaner. The Keylab is also recommended to take the battery off and clean the circuit board before replacing it. If you're not able to find a spare key, the best choice is to call an locksmith. A professional locksmith can reprogram the Fiat transponder keys without having to see your original keys. This is a much faster and less expensive option instead of waiting for an original Fiat key from Italy to arrive. A professional locksmith has all the necessary tools and equipment to replace your key as quickly as possible.