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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the fiat abarth key 500 makes it easy to open doors and start your car. There are a myriad of reasons the key fob might stop working. These include a dead coin battery damage to the receiver module, issues, and interfering.

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Dead Coin Battery

The most common reason the 500 key fob won't work is an inactive battery. Modern key fobs have a very limited range of operation, and must be within a few feet of the car to operate. If you're far from your vehicle and you press the key fob button, the car won't be able to respond, and will display the "Key Fob Not Detected" message in the instrument cluster.

If this occurs, replace the coin-cell battery (Part Number CR2032) by a fresh one of a reliable brand, such as Panasonic Duracell or Energizer. You can typically find them at your local hardware store, or online.

You can test the battery of your coin-cell by pressing the buttons while you're standing close to your fiat 500x key 500. The parking lights should light up and the key fob will operate the lock and unlock switches.

If your key fob still doesn't work even after replacing the battery, there might be water damage that hinders it from communicating with the module inside your vehicle. Water damage can happen through a variety of methods, including the simple splash or submerging the key fob in saltwater at the beach. If you suspect your fob has been exposed to water, try placing it in a dry rice bag to pull the moisture out. If this isn't working, you'll have to get your fob reprogrammed either by an auto locksmith or dealer.

Water Damage

While the fob has some rubber seals to keep water out of the electronic chip inside, submerging it in the ocean or washing it in a machine can cause water damage. Saltwater can cause the circuit board to become shorted and eventually end up dying. The fob getting wet is not an ideal idea but if you drop it in the water in a cup or fail to remove it from your pocket before you run the washing machine Don't give up hope.

First, remove the battery from the fob. Clean the electronic chip using isopropyl alcohol or a similar product and dry it thoroughly before replacing the battery. Test the fob afterward to determine if it's functioning. If the key does not function then it might need to be reset. This is usually handled by a professional or dealer auto locksmith.

If your key is old and is not programmed for your vehicle it is necessary to replace it completely. This is a simple procedure that can be completed by a professional automotive locksmith. The locksmith will need to cut the key to match the ignition of your car. The locksmith also needs to reprogram your fob in the vehicle's system. This is a fast and cost-effective process that is usually completed in the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key fob might stop working is because it's out of range. The remote usually has an operating range of 30 feet or less and if it's far away from your car it won't respond to your commands. This can be fixed by moving it closer to your vehicle until it begins responding.

If your fob doesn't work after replacing the battery in the coin, also known as a "button", "watch" or "button" it could be a problem with the internal circuit board. Reprogramming your fob can resolve this issue. You can find the procedure for most vehicles on YouTube or in the owner's guide.

It's possible that you need to replace the metal clips that keep the coin battery. If they lose tension, it could prevent your coin battery from sitting properly, causing your remote to malfunction.

In rare cases the fob might become desync'd with your vehicle due to software problems or hardware issues. This issue can be fixed by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain instances it is possible that the software will need to be reinstalled in your body control modules.

Interference

Interference can also cause the key fob to not be able to receive or transmit signals. This is possible when the key fob is close to radio transmitters (cell phones, radar detectors) or another source of electromagnetic radiation. The key fob might not function because of a problem to the buttons water damage or damage to the internal chips.

If the key fob has stopped working one day out of the blue or even after trying everything you can do at home to fix it e.g. You could have a malfunctioning 500 receiver module if you've tried replacing the battery, reprogramming it, or using an alternative key fob. The receiver module is located under the dash and picks up the radio frequency signals from the key fob. It then converts them into electronic commands that the vehicle interprets.

Luckily, there is an easy method to reset every single system on board in your 500 and include the key fob. Disconnect the battery 12 volt for about 15 minutes, by disconnecting the negative cable first then the positive cable. Then reconnect the battery. This will eliminate any remaining electricity and restart the car's computer system, which can help you get your key fob working again. If the issue persists, you should seek out an expert technician. They'll be able determine the exact cause of your issues.