Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a handy way to unlock the doors and get started the car. However, there are a variety of reasons why the fob won't be functioning. This could be due to a dead coin battery or damage to the receiver module, issues, and interfering.

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Dead Coin Battery

A dead battery is the most frequent cause of your 500 key fob that isn't working. Key fobs of today have an operating range that is limited and must be within just a few inches of the vehicle in order to work. If you are far from your car and press the keyfob button it will not respond, and display the message "Key Fob Not Detected".

If this happens If this happens, replace the battery in the coin-cell (Part Number CR2032) with a new battery from a reputable brand such as Panasonic Duracell or Energizer. They are available at the local hardware store or online.

You can test the battery on your coin-cell by pressing the buttons while standing near your Fiat 500. The car should blink its parking lights, and the key fob should work the lock and unlock switches.

If your key fob still doesn't work even after replacing the battery, there may be water damage that prevents it from connecting to the module inside your vehicle. Water damage can happen in a variety of ways, such as simply splashing or submerging your key fob in saltwater at the beach. If you suspect that 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 will probably need to be reprogrammed by a professional locksmith or dealer.

Water Damage

Water damage can occur when you submerge the fob in the ocean, or wash it in a washing machine. Saltwater can cause the circuit board to short, and eventually end up dying. If you get the fob wet, it's not an option however, if you drop it in a cup of water or fail to remove it from your pants pocket prior to running the washer, don't give up hope.

First, remove the battery. Clean the electronic chip using isopropyl alcohol or a similar product and then dry it thoroughly before replacing the battery. Then try the fob and check if it functions. If the key does not work, it may have to be programmed again. This is usually handled by an auto locksmith or dealer.

If the key is more recent and has never been programmed to your car It is likely that it needs to be replaced completely. A professional locksmith for cars can carry out this simple task. The locksmith will require the key cut to match your car's ignition. The locksmith will also have to reprogram your fob in the vehicle's system. This is a cheap and quick process that can be completed within the same day.

Receiver Module Issues

One of the simplest reasons your 500 key fob won't be working is because it's out of range. The remote's range is of 30 feet. So when you're too far from your vehicle it won't be able to respond to your commands. It can be solved by moving it closer to your vehicle until it starts responding.

If you've replaced the battery in your coin (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 problem. You can find the procedure for the majority of vehicles on YouTube or in the owner's manual.

You may need to replace the metal retaining clips that keep the coin battery in place. If they lose tension, it could prevent the coin battery from being seated properly, and this will cause the remote to malfunction.

In rare instances, the fob may be out of sync with your vehicle because due to hardware or software issues. It is possible to fix this issue by visiting your local dealer or auto-locksmith to reprogram your key fob. In some instances, they may need to reinstall the software on your body control module as well.

Interference

In addition to a dead battery on a coin The key fob may not be able to receive or transmit the signal due to interference. This can happen when the key fob is located near the radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob may not work due to a bad connection with the buttons or water damage, or damage to the internal chips.

If the key fob stopped working one day without notice, or after trying everything you can do at home to resolve it e.g. replacing the battery, reprogramming it and using the spare key fob, it could have a faulty receiver module on your 500. The receiver module, located under the dashboard, receives radio frequency signals from your key fob. It transforms the signals into electronic commands which are then processed by the vehicle.

Fortunately, there's an easy method of resetting all of the onboard systems in your 500 and include the key fob. Disconnect the 12 volt battery for about 15 minutes by taking off the negative cable first then the positive cable. Then reconnect the battery. This will clear any residual electrical charge, and then restart the computer of your car. This could help you get your key fob to work again. If the issue continues, you should seek the advice of an expert technician. They'll be able determine the exact cause of your issue.