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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 is a convenient way to open the doors and begin the car. There are a myriad of reasons the fob could stop working. This could be due to a dead coin battery, water damage, receiver module issues, and interfering.

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Dead Coin Battery

The most frequent reason that the 500 key fob won't function is due to the battery is dead. Modern key fobs have a limited range of operation, and must be within just a few feet of the car to operate. If you're far from your vehicle, and you hit the keyfob, it won't respond and display the message "Key Fob Not Detected".

If this happens, simply replace the battery on your coin cell (Part number CR2032) with a fresh one from a reliable brand like Panasonic, Duracell, or Energizer. You can find them at 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 500 and pressing the buttons. The parking lights should light up and the key fob will operate the lock and unlock switches.

If your key fob doesn't work even after replacing the battery, it could be water damage that has prevented it from connecting to the module inside your vehicle. Water damage can happen through a variety of methods, including an easy splash or submerging the key fob in saltwater at the beach. If you suspect that your fob was exposed to water, put it in a dry rice bag to draw the moisture back out. If that doesn't work the fob might need to be reset by an experienced auto locksmith or by the dealer.

Water Damage

Although the fob is equipped with rubber seals that keep water out of the electronic chip inside 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 die. It's not a good thing to get the fob wet however, don't give it up when you accidentally drop it in water or forget to remove it from your pocket.

First, remove the battery. Before replacing the battery, clean the electronic chip with isopropyl, or a similar product. Check the fob again to determine if it's functioning. If the key doesn't function, it may have to be changed. This is typically done by a professional or dealer auto locksmith.

If the key is a newer model and has not been programmed to your car, it will likely need to be replaced completely. This is a simple procedure that can be handled by a professional locksmith for automotive use. The locksmith will need the key to be cut to match the car's ignition. They'll also have to program the fob into your vehicle's system. This is a quick and affordable process that can usually be completed within the same day.

Receiver Module Issues

One of the main reasons why your 500 key fob may stop working is that it's simply out of range. The remote usually has an area of 30 feet or less and if it's far from your car, it won't respond to your commands. This can be easily fixed by moving closer to your vehicle until it begins responding.

If you've replaced the coin battery (commonly known as"button" or "button" or "watch") and your fob doesn't function It could be because of an internal circuit board problem. Reprogramming the fob is usually the solution to this issue. You can find directions on how to do this for most vehicles by searching YouTube or reading the owner's manual.

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

In rare cases, the fob may become desync'd with your vehicle due to software or hardware issues. It is possible to fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In some cases, they may need to reinstall the software on your body control module too.

Interference

In addition to a dead battery on a coin, the key fob may not be able to transmit or receive an signal due to interference. This is possible when the key fob is located near an electronic radio transmitter (cell phones or radar detectors) or another source of electromagnetic radiation. Other reasons the key fob may not function could be due to a weak connection to the buttons or damage to the internal chip, or water damage.

If the key fob failed to work one day in the middle of the night, or after trying everything you can do at home to fix it e.g. replacing batteries, reprogramming or using the spare key fob, you might have a malfunctioning receiver module on your 500. The receiver module, which is located beneath the dashboard, is able to pick up radio frequency signals from your key fob. It transforms the signals into electronic commands which are then interpreted by the vehicle.

Luckily, there is 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 and then the positive cable. Reconnect the battery. This will clear any residual electricity, and allow you to restart the computer in your car.  fiat 500 key  can help get your key fob to function again. If the issue continues, you should seek the advice of an expert technician. They will be able to identify the exact cause of any issues.