Reasons Your Fiat 500 Key Fob Won't Work

A fiat ducato remote key replacement 500 key fob is a great way to unlock the doors and get started the car. There are a variety of reasons why the key fob might stop working. This includes a dead coin-battery water damage, problems with receiver modules, as well as interference.

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Dead Coin Battery

A dead battery is the most frequent reason for your 500 key fob that isn't working. Modern key fobs have an operating range that is limited and must be within only a few inches from the vehicle to work. If you are far from your vehicle when you press the key fob button the car will not respond, and will display a "Key Fob Not Detected" message in the instrument cluster.

If this happens you need to replace the battery of your coin-cell (Part Number CR2032) by a new one from a reputable brand like Panasonic Duracell or Energizer. You can find them in the local hardware store or on the internet.

After you've replaced the coin cell battery you can test it by standing next to your fiat 500x key not detected 500 and pressing the buttons. The parking lights will flash and the key fob should operate the lock and unlock switches.

If your fob's key isn't working after replacing the battery, there could be water damage that has prevented it from communicating with the module in your vehicle. Water damage can occur through a variety of methods, including a simple splash or submerging the key fob in saltwater at the beach. If you suspect your fob was exposed to water, try placing it in a dry rice bag to draw the moisture back out. If this fails, you'll need to have your fob reset by an auto locksmith or a dealer.

Water Damage

Damage to the water supply can occur if you immerse the fob into the ocean or wash it in a washing machine. Saltwater is especially dangerous to the fob's circuit board and can cause it to short out and eventually end up dying. It's not a good idea to soak the fob in water but don't give up in the event that you accidentally drop it in water or fail to take it out of your pocket.

First take the battery off the fob. Clean the electronic chip with isopropyl ethanol or a similar product and then dry it completely before replacing the battery. Test the fob next to see if it is working. If the key still doesn't function, it may need to be programmed again. This is typically handled by a dealer or professional auto locksmith.

If the key is older and hasn't been programmed to your car, it will likely need to be replaced completely. A professional locksmith in the automotive industry can do this job. The locksmith must cut the key to match the ignition in your vehicle. The locksmith will also need to program your fob into the vehicle's system. This is an affordable and quick process that could be completed in the same day.

Receiver Module Issues

Your 500 key fob might be inoperable because it's out of range. The remote has a maximum range of 30 feet, which means if you are too far from your vehicle, it won't respond to your commands. It's easy to solve this issue by moving the remote closer to your vehicle until it responds.

If your fob doesn't work after you replace the battery inside the coin, which is also called a "button", "watch" or "button" it could be due to an issue with the internal circuit board. In the majority of cases, reprogramming your fob will fix the problem. The instructions are available for most vehicles on YouTube or in the owner's manual.

It's possible that you need to replace the metal retaining clips that keep the coin battery in place. If they loose tension, it can prevent your coin battery from sitting properly and cause your remote to malfunction.

In rare cases it is possible that the fob will become disconnected from your vehicle due to software issues or hardware issues. You can fix this problem by visiting your local auto-locksmith or dealer to reprogram your key fob. In some instances they might need to reinstall the program in your body control module, too.

Interference

Interference can also cause the key fob to not be able to receive or transmit the signal. This could happen if the key fob is close to radio transmitters (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob could not function could be due to a weak connection to the buttons, damage to the internal chip, or water damage.

If your key fob suddenly stopped working, or you have tried everything at home to solve the issue (e.g. battery replacement, reprogramming and using the spare key fob, you may have a faulty receiver module on your 500. The receiver module, located beneath the dashboard, picks up radio frequency signals from your key fob. It transforms the signals into electronic commands, which are then interpreted by the vehicle.

Luckily, there is an easy way to reset all of the onboard systems in your 500 and include the key fob. Disconnect the battery for 15 minutes by taking off first the negative cable, then the positive cable. Reconnect the battery. This will remove any remaining electricity, and restart the computer of your car. This can help you get your key fob to work again. If the issue continues, you should seek out an expert technician. They'll be able determine the root of your issues.