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How to Find a Fiat 500 Spare Key Fiat's 500 is an iconic vehicle since its relaunch in 2007. Now the company has kicked into a larger offensive toward different powertrains with a mild-hybrid version. Replacing the battery in the key fob on a Fiat 500 is straightforward and cheap. The Fiat main dealer will hand over the key within 10 days. Troubleshooting The key fob has an electronic chip that communicates with Fiat's immobiliser system to ensure that only authorised cars are able to start the engine. If the transponder chip on the key fob is damaged, it won't be able to connect to the immobiliser unit which means that your car won't start. It is possible to repair keys that have been damaged, as long that the chip has not been physically damaged. A professional locksmith can assist with this issue, and they'll employ the latest technology from dealers to repair the issue quickly and efficiently. By using an OBD scanner, it's possible to determine if your fob is still communicating with the receiver module. It's a quick and easy process that can give you an initial indication of the issue. If the OBD scanner shows that there is no communication between the receiver and transmitter modules, it might be required for the fob's transceiver module to be replaced. This is a cost-effective option and should be left to locksmiths. Dead Coin Battery A dead coin battery is the most frequent reason for a key fob to not function. This is an easy fix that takes only a few minutes. First, ensure that the key fob is within range of your vehicle. Press the “Lock” and “Unlock” buttons to determine whether they respond. The key fob may not function in any way, or just intermittently, if out of range. This could be an indication of a defective circuit board. You'll have to refer to the owner's guide to get instructions on how to reprogram the keyfob in this case. You can change the battery by getting rid of the mechanical latch on the back of the fob (see the image below). Then, gently lift the the battery holder, close to the switch. Remove the old battery. Then, place a new #3 volt battery into the fob assembly with the “+” side facing the cover on the rear of the key fob, 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 electronic chip inside, it's not waterproof. A splash of rain or a wash cycle is likely to be fine however, submerging the key fob in pool or ocean water is likely to cause damage. If the key fob is exposed to water and fails to function the device will need to be reset. This process can be done using the instructions found in your owner's manual or by bringing it to a professional auto locksmith or an Fiat dealer. Another common reason a fob can stop working is if it's out of distance from your car. Key fobs usually have a range of 30 feet and if they're far away from your car, it won't recognize them. The first step is to move closer to your vehicle. If this does not work, you may require replacing the key fob. You can find the steps on how to replace the battery in most vehicles either on YouTube or by consulting the owner's guide. This is a good time to consider getting a replacement key fob if it is starting to look scruffy and damaged. fiat 500 replacement key fob of Fiat do not require the use of a physical key to start or open the car. They use an electronic remote control that sends an electronic message to the car to turn the engine off and on. If you have a broken key fob, a locksmith will replace it for you. Leave this job to the professionals and save time and money. They can also program the new key for your Fiat. You'll need to give the locksmith a few details over the phone when you need a replacement Fiat key. You'll need to provide the locksmith specific information about the car, including the year it was manufactured and the model. This is important as locksmiths need it to ensure that the new key works with the existing locks. Not all locksmiths can make replacement keys for Fiat cars. Find a locksmith with an established track record and experience in the field. This means you can be certain that the key will work with your car and you won't be wasting money. Unpaired Key The most frequent reason for a key fob not functioning is a dead coin-cell battery. The key fob has metallic clips which hold the battery in place, and completes the circuit. When they become worn or loose, they can cause contact problems and no power. Replace the battery with a new, identical one. It is crucial to dry out the key fob in case it was submerged into liquid. Using isopropyl alcohol or electronic cleaner is an effective method to accomplish this. It is also recommended to take out the battery, clean the circuit board and replace it prior to replacing. If you're unable to locate a spare key, your best bet is to call locksmith. A professional locksmith can reprogram a Fiat transponder keys without having to look up your original keys. This is a faster and cheaper option than waiting for a genuine Fiat key from Italy to arrive. A professional locksmith will have all the necessary tools and equipment to replace your key as swiftly as is possible.