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Reasons Your Fiat 500 Key Fob Won't Work

A Fiat 500 key fob makes it easy to open doors and start your car. However, there are a variety of reasons the fob could stop functioning. This could be due to a dead coin battery or damage to the receiver module, issues, or interference.

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Dead Coin Battery

The most frequent reason that your 500 key fob won't work is a dead battery. Modern key fobs come with a limited range of operation, and should be within a few feet of the vehicle to operate. If you are not within your vehicle, and you press the keyfob button, it will not respond and display the message "Key Fob Not Detected".

If this occurs then replace the battery for your coin-cell (Part Number CR2032) with a new battery of a reliable brand, like Panasonic Duracell or Energizer. They are available at your local hardware store or online.

You can test the battery on your coin-cell by pressing the buttons while you're standing close to your Fiat 500. The parking lights should flash and the key fob should operate the lock and unlock switches.

If the fob's remote doesn't function after replacing the battery, it might be damaged by water that blocks it from communicating with the receiver module in your car. Water damage can happen in a variety of ways, such as a simple splash or submerging your key fob in saltwater at the beach. If you suspect that your fob was exposed to water, try placing it in a dry rice bag to pull the moisture back out. If this doesn't work the fob might require reprogramming by a professional auto locksmith or the dealer.

Water Damage

The fob does have rubber seals to keep water out of the chip's electronic circuit, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater can be particularly harmful to the circuit board of the fob, causing it to short out and eventually end up dying. In the event that you let your fob get wet, it's not an ideal idea, but if you drop it into an empty cup of water, or fail to remove it from your pants pocket before running the washing machine and you don't have a chance, don't give in.

Take the battery off first. Before replacing the battery clean the electronic chip with isopropyl, or a similar product. Test the fob afterward to determine if it's functioning. If the key doesn't function, it may need to be reset. This is usually done by a dealer or professional auto locksmith.

If the key is a newer model and has never been programmed to your car It will most likely need to be replaced completely. A professional locksmith for automotive will be able to complete this process. The locksmith will need the key cut to match the car's ignition. The locksmith also needs to reprogram your fob into the car's system. www.thekeylab.co.uk is a cost-effective and quick process that could be completed the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key fob may stop functioning is that it's out of range. The remote has a maximum range of 30 feet, which means should you be too far from your vehicle, it won't respond to your commands. This can be fixed by moving it closer to your vehicle until it begins responding.

If you've replaced the coin battery (commonly known as a "button" or "watch") and your fob still won't work, it could have an internal circuit board problem. In most cases, reprogramming the fob will fix the issue. You can find the instructions for the majority of vehicles on YouTube or in the owner's guide.

It may be necessary to replace the clips made of metal that hold the coin batteries in their place. If they lose tension they could stop the battery from being properly seated, and this will result in the malfunction of your remote.

In rare cases the fob could be disconnected from your vehicle due to software or hardware issues. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In some instances it may be necessary to reinstall the software on your body control module, too.

Interference

Interference can also cause the key fob not to receive or transmit signals. This may happen if the keyfob is located in close proximity to a radio transmitter, like a cell phone or radar detector. The key fob could not function because of a problem to the buttons or water damage, or damage to the internal chips.

If the key fob has stopped working one day suddenly or after trying every option at home to resolve it e.g. It could be a defective 500 receiver module if you've tried replacing the battery, reprogramming it, or using an alternative key fob. The receiver module, which is located beneath the dashboard, detects radio frequency signals from your key fob. It converts the signals into electronic commands, which are then read by the vehicle.

Luckily, there is an easy way to reset all on-board systems in your 500, including the key fob. Disconnect the battery 12 volt for about 15 minutes, by removing the negative cable and then the positive cable. Reconnect the battery. This will clear any residual electricity, and allow you to restart the computer of your car. This could help you get your key fob to work again. If the issue continues you should speak with an expert technician. They will be able to determine the exact cause of your problem.