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Reasons Your Fiat 500 Key Fob Won't Work

A key fob with the fiat 500 number is a handy way to unlock the doors and get started the car. However, there are a variety of reasons why the fob may stop working. This could be due to a dead coin-battery water damage, issues with the receiver module, and interference.

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

Dead Coin Battery

The most frequent reason that the 500 key fob won't work is an inactive battery. Modern key fobs operate with a limited operating range and should be within just a few feet of the vehicle in order to function. If you are far from your vehicle and 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, replace the coin cell battery (Part number CR2032) by a new one from a reliable brand like Panasonic, Duracell, or Energizer. They can be found in your local hardware store or online.

After you've replaced the battery of your coin cell It is possible to test it by standing next to your Fiat 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 buttons.

If your key fob isn't working after replacing the battery, it may be water damage which hinders it from interacting with the module inside your vehicle. Water damage can happen in many ways, including an easy splash or submerging the key fob saltwater at the beach. If you suspect that your fob was exposed to water, you can try placing it in a dry rice bag to pull the moisture back out. If this fails, you'll require your fob to be reprogrammed either by an auto locksmith or dealer.

Water Damage

The fob does have rubber seals that keep water out of the electronic chip inside, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to short, and eventually die. If you get the fob wet, it's not a good idea but if you accidentally drop it in a glass of water or fail to take it out of your pants pocket prior to running the washing machine, don't give up hope.

First, remove the battery. Before replacing the battery, clean the electronic chip using isopropyl, or a similar product. Then, test G28 to see if it works. If the key doesn't work, it may have to be reprogrammed. This is usually handled by an auto locksmith or dealer.

If your key is older and has not been programmed to work with your vehicle You will need to replace it completely. This is a simple procedure that can be carried out by a professional locksmith for automotive use. The locksmith will need to cut the key to match the ignition of your vehicle. They will also need to program the fob into the system of your car. This is a cheap and quick process that can be completed within the same day.

Receiver Module Issues

One of the main reasons your 500 key fob may stop working is that it's simply out of range. The remote has a maximum range of 30 feet. So should you be too far from your car it won't respond to your commands. This can be fixed by moving closer to your vehicle until it starts responding.

If your fob won't work after replacing the coin battery, also known as a "button", "watch" or "button" or "button", it could be due to an issue with the internal circuit board. In most cases, reprogramming the fob will resolve this problem. You can find the procedure for the majority of vehicles on YouTube or in the owner's guide.

It's possible that you need to replace the metal retaining clips that hold the coin battery in place. If they loose tension, it could prevent the coin battery from being properly seated and can cause your remote to malfunction.

In rare cases the fob might be out of the vehicle's sync because of hardware or software problems. This can cause a major headache, but you can usually fix it by visiting an auto locksmith to have them reprogram your fob for you. In some cases it may be necessary to reinstall the program in your body control module, as well.

Interference

Interference can also cause the key fob to not receive or transmit a signal. This may happen if the keyfob's location is in close proximity to a radio transmitter such as a cell phone or radar detector. The key fob may not function because of a weak connection to the buttons, water damage or damage to the internal chips.

If the key fob has been unable to function for a while without notice and you've tried everything you can 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 is situated under the dash and is able to pick up the radio frequency signals from the key fob. It converts the signals into electronic commands which are then interpreted by the vehicle.

There's a quick and easy way to reset the 500's internal system, including the keyfob. Disconnect the 12 volt battery for approximately 15 minutes by removing the negative cable first then the positive cable. Then, reconnect the battery. This will eliminate any remaining electricity, and restart the computer in your car. This will help you get your key fob to function again. If the problem persists you should seek out an expert technician. They can identify the exact cause of any issues.