Reasons Your Fiat 500 Key Fob Won't Work

A key fob with the fiat multipla key 500 number is a convenient method to open the doors and begin the car. There are a myriad of reasons why the key fob might stop functioning. These include a dead coin battery or damaged receiver module, water damage issues, or interference.

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Dead Coin Battery

The most common reason your 500 key fob doesn't function is due to a dead battery. Modern key fobs come with a limited operating range and should be within only a few feet from the vehicle in order to function. If you are far from your vehicle, and you press the keyfob button, it won't respond and display the message "Key Fob Not Detected".

If this happens, simply replace the coin cell battery (Part number CR2032) with a fresh one from a reputable brand like Panasonic, Duracell, or Fiat Multipla Key Energizer. They can be found in your local hardware store or on the internet.

After you've replaced the battery in the coin cell you can test it by standing near your fiat keys 500 and pressing the buttons. The parking lights should light up and the key fob should operate the lock and unlock switch.

If the key fob won't work after replacing the battery, it may have water damage that stops it from connecting to the receiver module in your car. Water damage can occur in a variety of ways, such as a simple splash or submerging the key fob into saltwater at the beach. If you suspect that your fob has been exposed to water, try putting it in a dry rice bag to pull the moisture out. If this doesn't work, the fob might require reprogramming by a professional auto locksmith or by the dealer.

Water Damage

While the fob comes with rubber seals that keep water out of the electronic chip inside and out of the ocean or washing it in a machine can cause water damage. Saltwater is particularly dangerous to the circuit board of the fob and can cause it to short out and eventually die. In the event that you let your fob get wet, it's not a good idea but if you accidentally drop it in the water in a cup or do not remember to remove it from your pants pocket prior to running the washer and you don't have a chance, don't give in.

First, remove the battery from the fob. Before replacing the battery, clean the electronic chip with isopropyl or a similar product. Next test the fob to test if it works. If the key doesn't work, it may need to be programmed again. This is typically done by a professional or dealer auto locksmith.

If the key is more recent and was not programmed to your car it is likely to need to be replaced completely. A professional automotive locksmith will be able to complete this process. The locksmith will need to cut the key to match the ignition in your vehicle. They'll also need to reprogram the fob in the car's system. This is a quick and affordable process that can be completed the next day.

Receiver Module Issues

Your 500 key fob might stop working because it is out of range. The remote's range is of 30 feet. Therefore, should you be too 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 car until it responds.

If you've replaced the battery on your coin (commonly called"button" or "button" or "watch") and the fob isn't working, it could have an internal circuit board issue. Reprogramming the fob is usually the solution to this issue. You can find the steps for most vehicles on YouTube or in the owner's manual.

It is sometimes necessary to replace the metal clips that hold the coin batteries in their place. If they loose tension it could prevent the battery from sitting properly, and this will cause the remote to malfunction.

In rare instances, the fob could be out of sync with your vehicle because of hardware or software problems. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In some instances, they may need to reinstall the software in your body control module too.

Interference

Interference can also cause the key fob to be unable to receive or transmit the signal. This could happen if the key fob is in proximity to a radio transmitter (cell phones and fiat multipla key radar detectors) or any other source of electromagnetic radiation. The key fob could not function due to a bad connection with the buttons water damage or damage to the internal chips.

If your key fob suddenly stopped working, or you've tried everything at home to solve the issue (e.g. replacing the battery, reprogramming, and using the spare key fob, it could have a damaged receiver module on your 500. The receiver module, located beneath the dashboard, detects radio frequency signals from your key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy method of resetting all on-board systems in your 500 keys, including the key fob. Disconnect the battery of 12 volts 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 in your car. This can help you get your key fob to function again. If the issue continues, you should seek out an expert technician. They can determine the root of your problems.