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Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a convenient method to unlock the doors and start the car. However, there are a variety of reasons why the fob won't be working. These include a dead coin battery damage to the receiver module, water problems, and interference.

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Dead Coin Battery

The most frequent reason why your 500 key fob will not function is due to a dead battery. Modern key fobs offer an operating range that is limited and must be within a few inches of your vehicle to work. If you are far from your vehicle and press the keyfob button, it won't respond and display the message "Key Fob Not Detected".

If this occurs, replace the coin-cell battery (Part Number CR2032) by a brand new one from a reputable brand such as Panasonic Duracell or Energizer. They are available at your local hardware store or on the internet.

After you've changed the battery on the coin cell you can test it by standing near your fiat remote key replacement 500 and pressing the buttons. The parking lights will flash 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 may be water damage which hinders it from interacting with the module inside your vehicle. Water damage can happen through a variety of methods, including an easy splash or submerging the key fob saltwater at the beach. If you think your fob was exposed to water, you can place it in a rice bag to draw out the moisture. If this doesn't work, you will need to have your fob reprogrammed either by an auto locksmith or dealer.

Water Damage

While the fob comes with rubber seals that keep water from the chip's electronic circuit it, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to become shorted and eventually fail. It's not a good thing to submerge the fob in water however, don't give it up in the event that you accidentally drop it in water or forget to take it out of your pants pocket.

Take the battery off first. Clean the electronic chip with isopropyl ethanol or a similar product and dry it completely before replacing the battery. Test the fob afterward to determine if it's functioning. If the key does not work, it might need to be changed. This is usually handled by an auto locksmith or dealer.

If your key is old and has not been programmed to work with your vehicle, you will need to replace it completely. A professional locksmith in the automotive industry can complete this simple process. The locksmith needs to cut the key to match the ignition in your vehicle. The locksmith will also have to reprogram your fob into the vehicle's system. It's a simple and cost-effective process that can be completed on the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key fob could stop working is that it's simply out of range. The remote's range is of 30 feet, which means should you be too far from your vehicle it will not respond to your commands. It's easy to solve this problem by moving the remote closer to your vehicle until it responds.

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 can resolve the issue. You can find the instructions on How to start a fiat 124 spider key fob not working 500X with key (farmarm.net) to do this for the majority of automobiles by searching YouTube or checking out the owner's manual.

It may be necessary to replace the metal clips that hold the coin batteries in their place. If they become loose, it could prevent your coin battery from sitting properly and cause your remote to malfunction.

In rare cases, the fob may become disconnected from your vehicle because of software or hardware issues. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain situations, they may need to reinstall the software in your body control module, too.

Interference

Interference can also cause the key fob to not receive or transmit the signal. This can occur when the keyfob's location is in close proximity to a radio transmitter, like a cell phone or radar detector. The key fob might not work due to a poor connection to the buttons, water damage or damage to the internal chips.

If your key fob suddenly stopped working, or if you have tried everything at home to solve the issue (e.g. It could be a defective 500 receiver module if you've tried replacing the battery, reprogramming or using an alternative key fob. The receiver module is located under the dash, and it picks up the radio frequency signals from the key fob. It converts the signals into electronic commands that are then read by the vehicle.

Luckily, there is an easy way to reset all on-board systems in your 500 device, including the key fob. Disconnect the battery for 15 minutes by taking off first the negative cable, then the positive cable. Then, reconnect the battery. This will erase any remaining electricity, and restart the computer in your car. This could help you get your key fob to function again. If the issue persists, you should consult an expert technician. They will be able to identify the root cause of your issues.