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How to Find a Fiat 500 Spare Key Fiat's classic 500 has become something of an icon since its relaunch in 2007. Now fiat replacement key has kicked off a new campaign to different engines with a mild-hybrid version. Replacing the battery in the key fob on a Fiat 500 is straightforward and cost-effective. The Fiat main dealer will supply the key in 10 days. Diagnosis of a Fault The key fob houses an electronic chip that communicates with the Fiat immobiliser system to ensure that only authorized cars can start the engine. If the transponder chip inside the key fob is damaged, it will not be able to link up to the immobiliser unit, which means your car won't start. It is possible to repair the key fob that has been damaged, as long as the chip isn't physically damaged. A professional locksmith can assist in this regard, and will use dealer-standard technology to fix it quickly and efficiently. By using an OBD scanner, it is possible to check if the fob is still communicating with the receiver module. It's a quick and easy process that can provide a first indication of the issue. If the OBD scan tool reports that communication between the receiver and transmitter modules is not happening, it may be necessary to replace the transmitter module on the fob. This is a costly option and should be left to a locksmith. Dead Coin Battery The most frequent cause of the key fob not working is a dead battery. This is an easy fix that takes a few minutes. Make sure the key fob is recognized by your vehicle. Then, press the “Lock” or “Unlock” button to check if it responds. If the key fob's signal is out of range, it may not be responsive at all, or only intermittently. This could be an indication of a damaged circuit board. You'll need to refer to your owner's guide for instructions on how to reprogram the keyfob in this case. The mechanical latch can be removed from the back of the key fob. (See the image below). Then, gently remove the 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” looking down towards the rubber buttons. Water Damage The key fob isn't waterproof even though it's got rubber seals that prevent water from getting into the electronic chip. The key fob may be fine with water from a shower or water from a wash cycle, however, submerging it in the ocean or in pool water is not recommended. If the key fob is exposed to water and stops working the device will need to be reset. This can be done by following instructions in your owner's manual or by taking it to an expert auto locksmith or an Fiat dealer. Another reason why a fob can stop working is if it's out of distance from your car. The range of the key fob is typically around 30 feet. If they are too far from your vehicle, it will not recognize them. To begin with, try moving closer to your car. If that doesn't work, the key fob's battery may require replacement. You can find information on how to replace the battery on most vehicles either on YouTube or by reading the owner's guide. It is a good idea to think about getting a new key fob in case yours is beginning to look shabby and scratched. Faulty Receiver Module In the more modern versions of Fiat cars you don't need an actual key to open the car or start it. These cars use a remote control which sends an encrypted wireless signal to the car to switch the engine off and on. A locksmith can replace the damaged keyfob. You can save yourself time and money by leaving this job to professionals. They can also program a new key to your Fiat. If you're looking to purchase a replacement key for your Fiat car, you'll need to provide the locksmith information about your car on the phone. For instance, you will be required to mention the year of manufacture of your car and the model's name. This is vital as the locksmith needs it to ensure that the new key is compatible with the locks in place. There are not many locksmiths who can make replacement keys for Fiat cars. Find a locksmith with a good track record and experience in the field. You can be sure that the key will be able to work for your vehicle and you won't be wasting money. Unpaired Key If you have a key fob which has stopped functioning, the most likely cause is the battery is dead. The key fob has metal retaining clips that hold the button cell in place and complete the circuit in the event that they wear out or broken, it can cause contact issues and no power. Replace the battery by an identical replacement. If the key fob was submerged in water, it's vital to dry it before inserting it again. The use of isopropyl alcohol or electronic cleaner is a good way to do this. 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, the best choice is to call an locksmith. A locksmith qualified to reprogram Fiat transponder keys is able to do this without the need for original keys. This is a speedier and less expensive solution instead of waiting for an original Fiat key from Italy to arrive. A professional locksmith has all the tools and equipment needed to replace your key as fast as is feasible.