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 has launched a larger offensive to different powertrains with the launch of a mild hybrid version.

Replacing the battery in the key fob on the Fiat 500 is straightforward and inexpensive. It takes around 10 days for the key to be shipped from the Fiat main dealer.

Diagnostics of a fault

The key fob has an electronic chip that communicates with the Fiat immobiliser system to ensure that only authorized vehicles can start the engine. If the transponder chip within the key fob is damaged, it won't be able to link up to the immobiliser unit, and this means that your car won't start.

It is possible to repair the key fob that has been broken, as long as the chip is not physically damaged. A professional locksmith will use standard techniques used by dealers to repair it quickly.

By using an OBD scanner, it's possible to check if the fob is still communicating with the receiver module. It's a quick and simple process that can provide a first indication of the issue. If the OBD scan tool reports that communication between the transmitter and receiver modules is not occurring it is possible to replace the transmitter module on the fob. This is a costly solution and should be left to locksmiths.

Dead Coin Battery

The most frequent reason for the key fob not working is a dead battery. Fortunately, this is simple fix that takes just a few minutes. First, make sure that the key fob is in the range of your vehicle. Then, press the "Lock" or "Unlock" button to check if it responds.

The key fob could not function at all, or only occasionally, if it's out of range. This could be an indication that the circuit board inside the key fob has gone bad. You'll need to consult the owner's manual for instructions on how to reprogram the keyfob for this scenario.

You can replace the battery by removing the mechanical latch on the back of the fob (see the image below). Then, gently pry the edge of the battery holder away from the switch to release the old coin-cell battery. Insert a new #CR2032 3 volt battery into the fob with the "+ side" facing to the rear cover, and the " side" facing downwards towards the buttons made of rubber.

Water Damage

The key fob is not waterproof even though it is fitted with rubber seals to prevent water from entering the electronic chip. A splash of water from rain or a wash cycle is likely to be okay however, submerging the key fob in ocean or pool water is likely to cause damage.

If the key fob is exposed to water and ceases to function the device will need to be reset. This process can be done using the instructions found in the owner's manual, or by taking it to a professional auto locksmith or an Fiat dealer.

A fob that's not in the range of operation may stop working. The range of the key fob is typically about 30 feet. If they are too far from the vehicle, it will not recognize them. In the beginning, try moving closer to your vehicle. If you're not able to get it working, the battery for your key fob may need to be replaced. There are battery replacement instructions for a variety of vehicles on YouTube or in the owner's manual. If your key fob appears damaged and scratched, then it's time to replace it.

Faulty Receiver Module

In more modern models of Fiat cars it is not necessary to have an actual key to open or start the car. The cars have a remote control that sends a wireless message to the car in order to turn the engine off and on. A locksmith can repair the broken keyfob. Don't worry about it to experts and save time and money. They can also program the new key for your Fiat.

When you are getting a replacement key for your Fiat vehicle, you'll need to provide the locksmith with details about your car over the phone. For instance, you'll be required to mention the year of production of your car as well as the name of the model. This is important as locksmiths require it to ensure that the new key works with the existing locks.

There are not many locksmiths who can make replacement keys for Fiat cars. You should choose one that has a good reputation and has experience in this field. You can be assured that the key will work with your vehicle and you won't be wasting money.

Keys that are not paired

The most common reason for a key fob not working is a dead coin cell battery. The key fob is equipped with metal clips which hold the battery in place and are part of the circuit. When they become worn or loose, they can cause contact issues and loss of power. Replace the battery with a new one with the same size, voltage and specifications, or a spare.

It is important to dry out the key fob if it was submerged in liquid. The use of isopropyl alcohol or electronic cleaner is a great 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're unable find a spare key, your best bet is to contact the locksmith. A locksmith who is experienced can reprogram the Fiat transponder key without having to view the original keys. This is a less costly and faster option than waiting for a genuine Fiat key to arrive from Italy. A professional locksmith will also have all the tools and equipment needed to complete a replacement key for fiat 500 in as little time as possible.