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How to Find a Fiat 500 Spare Key Fiat's classic Fiat 500 has become an icon since its relaunched in 2007. Now the company has 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 inexpensive. The Fiat main dealer will hand over the key in approximately 10 days. Troubleshooting The key fob houses 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 in your key fob is damaged, it won't be able to link up to the immobiliser unit which means your car will refuse to start. The good thing is that it's possible to repair a broken key fob, as long as the chip is not physically damaged. A professional locksmith will use standard technologies from dealers to repair it quickly. With an OBD scanner, it's possible to verify if the fob is still communicating with the receiver module. This is a fast and simple process that could provide a first indication of the problem. If the OBD scan tool reports that communication between the transmitter and receiver modules isn't happening It may be necessary to replace the transmitter module on the fob. This is a costly option, so it's best left to an expert locksmith. Dead Coin Battery A dead battery on a coin is the most frequent reason for a key fob to not function. Fortunately, this is an easy fix that can be completed in about 15 minutes. First, ensure that the key fob is in the range of your vehicle. Then, press the “Lock” or “Unlock” button to determine if the key fob responds. If the key fob's signal is out of range, it may not respond at all or may only function intermittently. This could be an indication of a bad circuit board. You'll need to refer to the owner's guide to get instructions on how you can 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 pry the edge of battery holder away from the switch to release the old battery. Then, place a new #3 volt battery into the fob with the “+” side facing toward the rear cover of the key fob and the “side facing down towards the key fob with the ” side facing down towards the rubber buttons. Water Damage Although the key fob comes with rubber seals that keep water from the electronic chip inside, it's not waterproof. A splash of water from rain or a wash cycle is likely to be fine, but submerging the key fob in ocean or pool water is likely to damage it. If the key fob is exposed to water and stops functioning the device will need to be reprogrammed. You can follow the directions in the owner's guideline, or visit an expert locksmith or Fiat dealer. A fob that is out of range may not function. The range of a key fob is usually around 30 feet. If they are too far away from your vehicle, it will not recognize the fob. For starters, try getting closer to your vehicle. If it doesn't work, the key fob battery might require replacement. You can find replacement battery instructions for a variety of automobiles on YouTube or in the owner's manual. If your key fob is looking rough and scratched, it's time to replace it. Faulty Receiver Module Fiat's more modern models do not require the use of a physical key to start or open the car. The cars are equipped with a key fob that sends an electrical signal to the car to turn on and off the engine. A locksmith can replace a broken keyfob. You will save time and money by leaving this task to professionals. They can also program the new key for your Fiat. You will need to provide the locksmith with a few details over the phone if you require a spare Fiat key. You'll need to provide the locksmith details about the car, including the year it was produced 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 are able to make replacement keys for Fiat automobiles. Look for a locksmith with a good track record and experience in the field. TheKeyLab can be sure that the key will work on your vehicle and you won't be wasting money. Keys that are not paired If you have a key fob that stopped functioning, the main cause is a dead coin battery. The key fob is made of metal retaining clips that hold the button cell in place and complete the circuit in the event that they wear out or damaged, it could cause contact problems and not being able to power. Replace the battery by another, identical one. If the key fob was submerged in water, it is essential to dry it before re-inserting it. This can be accomplished using isopropyl or an electronic cleaner. It is also recommended that you remove the battery and clean the circuit board, and replace it prior to replacing. If you're unable to find a spare key your best option is to call an locksmith. A locksmith qualified to reprogram Fiat transponder keys can do it without the need for original keys. This is a faster and cheaper solution 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 keys as quickly as possible.