Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 is a handy way to open the doors and start the car. There are many reasons the fob won't work. This could be due to a dead coin battery damaged receiver module, water damage issues, and interfering.

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Dead Coin Battery

The most frequent reason why your 500 key fob doesn't function is due to an inactive battery. Modern key fobs come with a limited operating range and must be within just a few feet of the car to operate. If you are far from your vehicle, and you hit the keyfob, it won't respond and display the message "Key Fob Not Detected".

If this happens, replace the battery on your coin cell (Part number CR2032) with a fresh one from a reputable manufacturer such as Panasonic, Duracell, or Energizer. You can typically find them 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 next to your fiat doblo key fob replacement 500 and pressing the buttons. The parking lights should light up and the key fob should operate the lock and unlock switches.

If the fob's remote doesn't function after replacing the battery, it might have water damage that stops it from connecting to the receiver module in your car. Water damage can happen in a variety of ways, ranging from the slightest splash to submerging your fob in salt water at the beach. If you believe your fob was exposed to water, put it in a rice bag to draw out the moisture. If that doesn't work, your fob will probably need to be reset by a professional locksmith or dealer.

Water Damage

While the fob comes with rubber seals that keep water from the chip's electronic circuit the device, submerging it into the ocean or washing it in a machine could cause water damage. Saltwater is especially dangerous to the fob's circuit board and can cause it to short out and eventually end up dying. Getting the fob wet is not an ideal choice, but if you drop it into a glass of water or fail to take it out of your pants pocket prior to running the washer Don't give up hope.

Remove the battery first. Clean the electronic chip with isopropyl alcohol or a similar product and dry it thoroughly before replacing the battery. Test the fob afterward to check if it's functioning. If the key does not function, it may need to be reprogrammed. This is usually done by an auto locksmith or dealer.

If the key you have is older and has not been programmed for your car, you will need to replace it completely. A professional automotive locksmith will be able to complete this process. The locksmith will have to cut the key to match the ignition in your vehicle. The locksmith will also need to reprogram your fob in the car's system. It's a simple and affordable process which can be completed in the same day.

Receiver Module Issues

One of the main reasons why your 500 key fob might stop working is because it's out of range. The remote usually has a range of 30 feet or less, and if it's too far away from your car it will not respond to your commands. You can easily solve this problem by moving the remote closer to your vehicle until it responds.

If you've replaced the battery in your coin (commonly known as a "button" or "watch") and the fob won't work It could be because of an internal circuit board issue. In the majority of cases, reprogramming your fob can resolve the issue. There are instructions on how to do this for all automobiles by searching YouTube or reading the owner's manual.

It is possible to replace the metal clips that keep the battery of your coin in place. If they loose tension, it could prevent the battery from sitting properly, and this will cause your remote to malfunction.

In rare cases the fob could be desync'd with your vehicle due to software problems or hardware issues. You can fix this issue by visiting your local dealer or auto-locksmith to reprogram your key fob. In some cases they might need to reinstall the program in your body control module, as well.

Interference

Interference can also cause the key fob to be unable to receive or transmit the signal. This is possible when the key fob is close to a radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob could not work due to a poor connection with the buttons, water damage or damage to the internal chips.

If the key fob failed to work one day out of the blue or after trying every option at home to fix it e.g. You could have a malfunctioning 500 receiver module after you've tried replacing the battery, reprogramming, or using a spare key fob. The receiver module, which is located beneath the dashboard, picks up radio frequency signals from your key fob. It converts the signals into electronic commands that are then processed by the vehicle.

Fortunately, there's an easy method to reset all on-board systems in your 500 and include the key fob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Reconnect the battery. This will eliminate any remaining electrical charge and restart the car's computer system, which could allow you to get your key fob working again. If the issue persists, you should speak with an expert technician. They will be able to diagnose the exact cause of your issues.