Reasons Your fiat remote Key replacement 500 Key Fob Won’t Work

A Fiat 500 key fob makes it easy to open doors and start your car. There are a variety of reasons why the fob could stop working. These include a dead coin battery damage to the receiver module, issues, and interference.

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Dead Coin Battery

A dead battery is the most frequent cause of your 500 key fob not working. Modern key fobs operate with a limited operating range, and must be within only a few feet from the vehicle in order to function. If you are far from your vehicle and 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, simply replace the coin cell battery (Part number CR2032) with a fresh one from a reputable manufacturer like Panasonic, Duracell, or Energizer. You can find them at the local hardware store or online.

After you’ve replaced the coin cell battery, you can test it by standing near your fiat 500 key replacement 500 and pressing the buttons. The parking lights should flash and the key fob should operate the lock and unlock switches.

If your fob’s key does not work after replacing the battery, there might be water damage that hinders it from connecting to the module inside your vehicle. Water damage can happen in many ways, including an easy splash or submerging the key fob in saltwater at the beach. If you believe your fob was exposed to water, place it in a bag of rice to draw out the moisture. If this doesn’t work, your fob is likely to require reprogramming by an experienced locksmith or dealer.

Water Damage

Damage to the water supply can occur if you immerse the fob in the ocean or wash it in a washer. Saltwater poses a particular risk to the circuit board of the fob, causing it to short out and eventually die. It’s not a good thing to soak the fob in water however, don’t give it up if you accidentally drop it in the water or don’t remove it from your pocket.

First remove the battery from the fob. Clean the electronic chip with isopropyl ethanol or a similar product and dry it thoroughly before replacing the battery. Test the fob afterward to verify if it’s functioning. If the key still doesn’t work, it might need to be reset. This is usually handled 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 automotive locksmith can complete this simple process. The locksmith will need the key to be cut to match your car’s ignition. The locksmith will also need to reprogram the fob into the car’s system. This is an affordable and quick procedure that can be completed the same day.

Receiver Module Issues

Your 500 key fob may stop working because it is out of range. The remote typically has 30 feet of range or less and if it’s far from your car, 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 won’t work after you replace the battery for the coin, also known as a “button”, “watch” or “button” it could be a problem with the internal circuit board. In the majority of cases, reprogramming your fob will resolve this issue. You can find the steps for the majority of vehicles on YouTube or in the owner’s guide.

You may have to replace the metal clips that hold the coin battery. If they lose tension, it could hinder the battery from being properly seated, and this will cause your remote to malfunction.

In rare instances 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 dealer or auto-locksmith to reprogram your key fob. In certain instances the software might require reinstallation to your body control modules.

Interference

In addition to a dead coin battery the key fob could not be able to transmit or receive signals due to interference. This is possible when the key fob is near radio transmitters (cell phones or radar detectors) or another source of electromagnetic radiation. Other reasons the key fob might not function include a poor connection to the buttons and internal chip, or water damage.

If the key fob stopped working one day in the middle of the night and you’ve tried everything you can do at home to fix it e.g. replacing the battery, reprogramming, and using the spare key fob, you might have a damaged receiver module on your 500. The receiver module is situated under the dash, and it picks up the radio frequency signals from the key fob. It then converts them into electronic commands that the vehicle interprets.

There’s a quick and easy way to reset the 500’s internal system, including the keyfob. Disconnect the battery 12 volt for about 15 minutes by removing the negative cable first then the positive cable. Reconnect the battery. This will eliminate any remaining electricity and restart the car’s computer system, which could help get your key fob working again. If the problem persists you should speak with an expert technician. They will be able to determine the exact cause of issues.