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How Fiat Key Cover Rose To Become The #1 Trend On Social Media
How to Find a Fiat 500 Spare Key

Fiat's classic 500 has become an iconic vehicle since its revival in 2007. The company is now kicking into a larger offensive toward different engines with a mild-hybrid version.

Replacing the battery for the key fob on a Fiat 500 is straightforward and affordable. It takes approximately 10 days for the key to be received from the Fiat main dealer.

Fault Diagnosis

The key fob houses an electronic chip which communicates with your Fiat's 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.

The good thing is that it's possible to repair a damaged key fob if the chip isn't physically damaged. A professional locksmith will utilize standard technologies from dealers to repair it swiftly.


It is possible to utilize an OBD scanner to see whether your fob is communicating with the receiver module. This is a simple procedure, and it can provide an initial indication of the source of the issue. If the OBD scan tool indicates that communication between the receiver and transmitter modules isn't working it could be necessary to replace the fob's transmitter module. This is a costly option and should be left to locksmiths.

Dead Coin Battery

A dead battery on a coin is the most frequent reason for a key fob to not function. fiat car key replacement is an easy fix that only takes just a few minutes. Check that the key fob can be visible to your vehicle. Then, try pressing the "Lock" or "Unlock" button to see if it responds.

The key fob could not function at all, or perhaps only intermittently, if it is out of range. This could be a sign of a bad circuit board. In this case 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 edges of the battery holder, close to the switch, and remove the old coin cell battery. Install a brand new 3-volt #CR2032 battery into the fob with the "+ side" facing the cover on the rear and the "- side" directed towards the rubber buttons.

Water Damage

The key fob isn't waterproof even though it has rubber seals to prevent water from getting inside the electronic chip. The key fob is likely to be able to handle the splash of rain or water from a wash cycle however, submerging it in ocean or pool waters is not recommended.

The key fob will need to be reprogrammed if the device is exposed to water. This can be accomplished by following the instructions in your owner's manual or by taking it to a professional auto locksmith or a Fiat dealer.

Another reason why a fob may stop working is that it's out of the range of your car. Key fobs usually have a range of 30 feet, and if they're too far from your car, it won't be able recognize them. To begin with, try moving closer to your car. If this doesn't work, then the key fob's battery may need to be replaced. There are battery replacement instructions for most vehicles on YouTube or in the owner's manual. This is the perfect time to consider getting a replacement key fob if it is beginning to look worn 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. The cars have a remote control that sends an wireless message to the car to turn the engine off and on. If you've lost your key fob, a locksmith will replace it for you. Leave this job to the professionals and save time and money. They can also create a new key for your Fiat.

You will need to give the locksmith a few details over the phone when you need a replacement Fiat key. For instance, you'll be required to mention the year of production for your vehicle and the name of the model. This is important because the locksmith will require this information to make sure that the new key will work with the locks in place.

You should be aware that not all locksmiths can create replacement keys for Fiat vehicles. Look for a locksmith with an established track record and expertise in the field. This means that you are certain that the key will work with your vehicle and you won't waste money.

Unpaired Key

If you have a key fob which has stopped functioning, the main reason is a dead coin battery. The key fob has metal clips which hold the battery in place and complete the circuit. When these become worn or loose, they can result in contact issues and then no power. Replace the battery with one of the same size, voltage and specifications, or get a spare.

If the key fob was submerged in water, it's vital to dry it before inserting it again. Using isopropyl alcohol or electronic cleaner is an effective way to do this. It is also recommended to remove the battery and clean the circuit board before replacing it.

Contacting locksmiths is the best solution if you're unable to find an alternative. A locksmith with the ability to reprogram Fiat transponder keys is able to do this without having to see the original keys. This is a far cheaper and quicker solution than waiting for an authentic Fiat key to arrive from Italy. A professional locksmith will also have all the tools and equipment necessary to complete a replacement as fast as is possible.