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Reasons Your Fiat 500 Key Fob Won't Work
A key fob for the Fiat 500 makes it simple to open doors and start your car. However, there are a variety of reasons the fob could stop functioning. This includes a dead coin-battery and water damage, as well as issues with the receiver module, and interference.
This listing is for an NEW replacement Fiat Flip Key Remote that is similar to the Ilco brand. It must be professionally programmed (click here to search for local locksmiths in the automotive industry). Includes lock, unlock, and trunk buttons.
Dead Coin Battery
A dead battery is probably the most common reason for your 500 key fob not functioning. Modern key fobs operate with a restricted operating range, and must be within a few feet of the vehicle in order to function. If you're far from your vehicle and you 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 battery in the coin cell (Part number CR2032) with a new one from a reputable manufacturer such as Panasonic, Duracell, or Energizer. They are usually available at your local hardware store or on the internet.
You can test the battery in the coin-cell by pressing the buttons while standing near your Fiat 500. The parking lights should light up and the key fob will operate the lock and unlock switches.
If your key fob isn't working after replacing the battery, it may be water damage that has prevented it from interacting with the module inside your vehicle. Water damage can occur in a variety of ways, from small splashes to submerging your fob in salt water at the beach. If you suspect that your fob has been exposed to water, put it in a rice bag to draw out the moisture. If this does not work, you'll need to have your fob replaced by an auto locksmith or a dealer.
Water Damage
Although the fob is equipped with rubber seals that keep water out of the chip's electronic circuit and out of the ocean or washing it in a machine can cause water damage. Saltwater can cause the circuit board to short and eventually fail. If you get the fob wet, it's not a good idea but if you drop it in the water in a cup or don't remember to remove it from your pants pocket prior to running the washer, don't give up hope.
First, remove the battery. Before replacing the battery clean the electronic chip with isopropyl or a similar product. Check the fob to determine if it's working. If the fob doesn't work it could need to be reset. This is typically done by a professional or dealer auto locksmith.
If your key is old and has not been programmed for your car You will need to replace it completely. A professional automotive locksmith can do this job. The locksmith will need the key cut to match your vehicle's ignition. The locksmith will also need to program your fob into the vehicle's system. This is a fast and inexpensive process that can usually be completed the next day.
Receiver Module Issues
One of the simplest reasons why your 500 key fob won't be functioning is that it's out of range. The remote's range is of 30 feet, so if you are too far from your car, it won't respond to your commands. You can easily solve this problem by moving the remote closer to your car until it responds.
If your fob won't work after replacing the coin battery, also called a "button", "watch" or "button" it could be due to a problem with the internal circuit board. Reprogramming the fob usually resolves this problem. The instructions are available for the majority of vehicles on YouTube or in the owner's guide.
You may need to replace the metal clips that keep the coin battery in place. If they loose tension it could hinder the battery from being seated properly and cause the remote to malfunction.
In rare cases the fob might become desync'd with your vehicle due to software issues or hardware issues. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain instances the software may require reinstallation in your body control modules.
Interference
In addition to a dead coin battery The key fob may not be able to receive or transmit a signal due to interference. This can occur when the keyfob is in close proximity to a radio transmitter like a cell phone or radar detector. Other reasons the key fob may not function could be due to a weak connection to the buttons and internal chip or water damage.
If your key fob suddenly stopped working, or you've tried everything at home to solve the issue (e.g. replacing the battery, reprogramming it and using the spare key fob, it could have a faulty receiver module on your 500. thekeylab.co.uk , located beneath the dashboard, picks up radio frequency signals from your key fob. It transforms the signals into electronic commands which are then translated by the vehicle.
There is a straightforward method to reset the 500's onboard system including the keyfob. 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 electricity, and allow you to restart the car's computer. This can help you get your key fob to work again. If the issue persists, you should speak with an expert technician. They'll be able to identify the root cause of your issue.