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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 is a convenient method to open the doors and begin the car. There are a myriad of reasons the fob won't work. It could be due to a dead battery damage to the receiver module, water issues, and interference.

fiat 500x key fob is for a 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). It comes with lock, unlock and trunk buttons.

Dead Coin Battery

A dead battery is probably the most common cause of your 500 key fob not working. Modern key fobs offer a limited range of operation and must be within only a few inches from the vehicle to function. If you're far away from your vehicle when you press the key fob button the car won't respond and will display a "Key Fob Not Detected" message in the instrument cluster.

If this occurs you need to replace the battery of your coin-cell (Part Number CR2032) by a brand new one of a reputable brand like Panasonic Duracell or Energizer. They are available at your local hardware store, or on the internet.

You can test the battery of your coin-cell by pressing the buttons while standing close to your Fiat 500. The parking lights will flash and the key fob will operate the lock and unlock switch.

If the fob's remote doesn't function after replacing the battery, it may have water damage that prevents it from connecting to the receiver module in your vehicle. Water damage can happen in a variety of ways, ranging from the slightest splash to submerging the fob into 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 this does not work, you'll have to get your fob reprogrammed either by an auto locksmith or dealer.

Water Damage

Water damage can happen if you immerse the fob in the ocean or wash it in a washing machine. Saltwater can cause the circuit board to short and then cease to function. It's not good to get the fob wet, but don't give it up if you accidentally drop it in water or fail to remove it from your pocket.

First remove the battery from the fob. Clean the electronic chip using isopropyl or a similar product and then dry it completely before replacing the battery. Next try the fob and verify if it is working. If the key still doesn't function, it may need to be changed. This is typically done by a dealer or professional auto locksmith.

If the key is a newer model and was not programmed to your car it is likely to need to be replaced completely. A professional locksmith in the automotive industry can complete this simple process. The locksmith will require the key cut to match the car's ignition. They'll also have to program the fob into the system of your car. This is an affordable and quick process that can be completed the same day.

Receiver Module Issues

The 500 key fob you have may not work because it's out of range. The remote usually has 30 feet of range or less, and if it's too far from your car, it will not respond to your commands. It is possible to fix this by moving the remote closer to your vehicle until it responds.

If your fob doesn't work after replacing the battery for the coin, also known as a "button", "watch" or "button" it may be due to a malfunction on the internal circuit board. Reprogramming the fob typically resolves this problem. You can find the instructions on how to do this for most automobiles by searching YouTube or looking through the owner's manual.

It is sometimes necessary to replace the metal clips that hold the coin batteries in place. If they become loose, it can stop your coin battery from sitting properly, causing your remote to malfunction.

In rare instances the fob could be desync'd with your vehicle due to software issues or hardware issues. This can cause a major problem, but you can often fix this by visiting an auto locksmith to reprogram your fob. In certain instances the software might require reinstallation in your body control modules.





Interference

In addition to a dead coin battery the key fob could not be able to transmit or receive an signal due to interference. This can happen when the key fob is close to an electronic radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob might not function because of a problem with the buttons or water damage, or damage to the internal chips.

If your key fob suddenly stopped working, or you've tried everything at home to resolve it (e.g. You may have a faulty 500 receiver module in the event that you've tried replacing the battery, reprogramming, or using a spare key fob. The receiver module, located beneath the dashboard, receives radio frequency signals from your key fob. It converts the signals into electronic commands that are then interpreted by the vehicle.

There's a simple method to reset the 500's in-board system, including the keyfob. Disconnect the battery of 12 volts for approximately 15 minutes by removing the negative cable and then the positive cable. Then reconnect the battery. This will clear any residual electricity, and restart the computer in your car. This can help you get your key fob to work again. If the issue continues, you should consult an expert technician. They'll be able determine the root of your problem.