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What Is The Reason? Fiat Key Cover Is Fast Increasing To Be The Most Popular Trend For 2023?
How to Find a Fiat 500 Spare Key

Fiat's classic 500 has evolved into something of an iconic vehicle since its relaunch in 2007. The company is now kicking off a larger campaign towards different engines with a mild-hybrid version.

Replacing the key fob battery on a Fiat 500 is straightforward and cost-effective. The Fiat main dealer will hand over the key within 10 days.

Fault Diagnosis

The key fob is equipped with an electronic chip that communicates with your Fiat's immobiliser system to ensure that only authorised cars are able to start the engine. If the transponder chip within the key fob is damaged, it will not be able to link up to the immobiliser unit and as a result, your car will refuse to start.

It is possible to repair keys that have been broken, as long as the chip isn't physically harmed. A professional locksmith can help with this, and they'll employ the latest technology from dealers to repair 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 simple procedure that will provide a first indication of the problem. If the OBD scan tool shows that communication between the transmitter and receiver modules is not happening it is possible to replace the fob's transmitter. This can be a costly alternative, and is best left to an expert locksmith.

Dead Coin Battery

A dead battery for the coin is the most frequent reason for a key fob to not function. It's an easy fix that takes about 15 minutes. First, make sure that the key fob is within the range of your vehicle. Then, try pressing the "Lock" or "Unlock" button to determine if the key fob responds.

If the key fob is not in range, it may not respond at all or only intermittently. This could also be a sign that the circuit board inside the key fob has gone out of date. It is recommended to consult the owner's manual to find out on how to reprogram the keyfob in this situation.

You can replace the battery by pulling off the mechanical latch that is on the back of the fob (see the image below). Then, gently pry the edge of the battery holder away from the switch in order to remove the old coin-cell battery. Then, you can insert a brand new 3 volt battery # CR2032 into the fob assembly, with the "+" side facing the rear cover of the key fob, and the "--" side facing down toward the rubber buttons.

Water Damage

While the key fob is fitted with rubber seals that keep water from the chip, it is not waterproof. The key fob should be able to handle a splash of rain or water from a wash cycle however, submerging the device in the ocean or in pool water is not recommended.

If the key fob is exposed to water and stops working it will have to be reprogrammed. You can follow the directions in your owner’s manual, or go to an experienced locksmith or Fiat dealer.


Another common reason a fob may stop working is because it's out of reach of your vehicle. The range of the key fob is typically around 30 feet. If they are too far from the car, then it will not recognize them. To begin with, try moving closer to your car. If this isn't working, you might need to replace your key fob. There are battery replacement instructions for the majority of vehicles on YouTube or in the owner's manual. This is a great time to think about purchasing a replacement key fob if the one you have is beginning to look worn and scratched.

Faulty Receiver Module

Modern models of Fiat do not require the use of a physical key to start or open the car. These cars use a remote control that transmits an wireless message to the car to turn the engine on and off. A locksmith can replace the damaged key fob. Leave this job to the professionals and save time and money. They can also program the new key for your Fiat.

You will need to give the locksmith some details over the phone if you need a replacement Fiat key. For instance, you will be required to mention the year of production of your vehicle and the name of the model. This is vital as the locksmith needs it to ensure that the new key works with the locks in place.

Not all locksmiths can create replacement keys for Fiat automobiles. It is important to choose one that has a good reputation and has experience in this particular field. You can be assured that the key will work on your vehicle, and you won't waste money.

Keys that are not paired

The most frequent reason for a key fob to stop working is a dead coin battery. The key fob comes with metal clips that secure the battery in place and are part of the circuit. When these become worn or loose, they could cause contact issues and loss of power. Replace the battery with an identical replacement.

If the key fob was submerged in water, it's important to dry it out before re-inserting it. Using fiat 500 car keys or electronic cleaner is an effective way to do this. It is also advisable to remove the battery and clean the circuit board prior to replacing it.

Contacting locksmiths is the best option if you're unable to find an extra. Locksmiths who are certified to reprogram Fiat transponder keys can do so without needing to look at the original keys. This is a far cheaper and faster option than waiting for a genuine Fiat key to arrive from Italy. A professional locksmith will also have all the equipment and tools needed to complete the replacement as fast as possible.