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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 key fob might stop working. These include a dead battery or damage to the receiver module, water issues, and interfering.

This listing is for an NEW replacement Fiat Flip Key Remote that is similar to the Ilco brand. It has to be professionally programmed (click here to search for local automotive locksmiths). It includes trunk, lock and unlock buttons.

Dead Coin Battery

The most frequent reason why your 500 key fob will not function is due to a dead battery. Modern key fobs have a restricted operating range, and should be within a few feet of the vehicle to function. If you're far from your car and push the keyfob button it will not respond, and display the message "Key Fob Not Detected".

If this occurs you need to replace the battery of your coin-cell (Part Number CR2032) by a fresh one of a trusted brand like Panasonic Duracell or Energizer. You can find them in your local hardware store, fiat 500 key fob programming or online.

After you've replaced the battery in the coin cell It is possible to test it by standing near your fiat 500x key not detected 500 Key Fob Programming - Drachmann-Purcell.Technetbloggers.De - 500 and pressing the buttons. The car will blink its parking lights and the key fob should be able to operate the lock and unlock switches.

If your key fob still does not work after replacing the battery, it may be water damage which has prevented it from interacting with the module inside your vehicle. Water damage can occur through a variety of methods, including a simple splash or submerging the key fob 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 that doesn't work your fob is likely to need to be reprogrammed by an experienced locksmith or dealer.

Water Damage

While the fob has some rubber seals that keep water from the electronic chip inside and out of the ocean or washing it in a machine can cause water damage. Saltwater can cause the circuit board to short and then end up dying. Getting the fob wet is not a good idea however, if you drop it into an empty cup of water, or forget to remove it from your pants pocket prior to running the washer do not give up hope.

First, remove the battery. Clean the electronic chip using isopropyl ethanol or a similar product and dry it thoroughly before replacing the battery. Test the fob afterward to verify if it's working. If the key doesn't function, it may need to be programmed again. This is usually handled by a dealer or professional auto locksmith.

If your key is older and has not been programmed to work with your vehicle, you will need to replace it completely. A professional locksmith for automotive can do this job. The locksmith needs to cut the key to match the ignition of your vehicle. They'll also need to program the fob into your car's system. This is a fast and affordable process which can be completed in the same day.

Receiver Module Issues

The 500 key fob could not work because it's out of range. The remote usually has an area of 30 feet or less, and if it's too far from your car, it won't respond to your commands. You can solve this issue by moving the remote closer to your vehicle until it responds.

If your fob doesn't work after replacing the battery in the coin, also known as a "button", "watch" or "button", it could be a problem with the circuit board inside. In the majority of cases, fiat 500 key fob programming reprogramming your fob will fix the problem. There are instructions on how to do this for all vehicles by searching YouTube or looking through the owner's manual.

It could be necessary to replace the clips made of metal that hold the coin batteries in the correct position. If they lose tension it can stop your coin battery from sitting properly and cause your remote to malfunction.

In rare instances it is possible that the fob will become desync'd with your vehicle due to software problems or hardware issues. This could be a huge headache, but you can usually fix it by visiting a local dealer or auto locksmith to reprogram your fob for you. In some cases it is possible that the software will require reinstallation into your body control modules.

Interference

In addition to a dead battery on a coin The key fob may not be receiving or transmitting the signal due to interference. This is possible when the key fob is in proximity to the radio transmitter (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob might not function could be due to a weak connection to the buttons or the internal chip, or water damage.

If the key fob has failed to work one day out of the blue or after trying every option at home to fix it e.g. replacing the battery, reprogramming it and using the spare key fob, you could have a damaged receiver module on your 500. The receiver module is situated under the dash and receives the radio frequency signals from the key fob. It converts them to electronic commands that the vehicle interprets.

Fortunately, there's an easy method to reset every single system on board in your 500 keys, including the key fob. Disconnect the 12 volt battery for about 15 minutes, by taking off the negative cable first then the positive cable. Reconnect the battery. This will erase any remaining electrical charge, and then restart the car's computer. This can help get your key fob working again. If the issue continues you should seek out an experienced technician. They'll be able diagnose the exact cause of your problem.