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10 Tell-Tale Signals You Should Know To Look For A New Fiat Panda Key Fob Replacement
Reasons Your Fiat 500 Key Fob Won't Work

A key fob from Fiat 500 is a great way to open the doors and start the car. However, there are many reasons why the key fob might stop working. This could be due to a dead coin-battery water damage, receiver modules issues, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote - an exact replica of the Ilco brand that needs to be professionally programmed by a local automotive locksmith (click here to search for a Locksmith Search). This remote includes trunk, lock and unlock buttons.

Dead Coin Battery

The most common reason the 500 key fob won't function is a dead battery. Key fobs of today have only a limited range of operation and must be within a few inches of the vehicle in order to work. If you're not close to your vehicle and press the key fob button the car won't be able to respond, and will display a "Key Fob Not Detected" message in the instrument cluster.

If this happens, replace the battery on your coin cell (Part number CR2032) with a new one from a reputable brand such as Panasonic, Duracell, or Energizer. They are available at the local hardware store or on the internet.

After you've replaced the battery in the coin cell You can test it by standing next to your Fiat 500 and pressing the buttons. The car will blink its parking lights and the key fob will operate the lock and unlock switches.

If the key fob doesn't work after replacing the battery, it may be damaged by water, which prevents it from communicating with the receiver module inside your car. Water damage can occur in a variety of ways, from the slightest splash to submerging the fob in salt water at the beach. If you suspect that your fob was exposed to water, try placing it in a dry rice bag to draw the moisture out. If this fails, you'll need to have your fob reprogrammed either by an auto locksmith or a dealer.

Water Damage

Although the fob is equipped with rubber seals that keep water from the chip's electronic circuit, submerging it in the ocean or washing it in a machine can cause water damage. Saltwater can cause the circuit board to short and then fail. The fob getting wet is not an ideal idea but if you drop it into an empty cup of water, or forget to take it out of your pants pocket prior to running the washing machine do not give up hope.

First take the battery off the fob. Clean the electronic chip using isopropyl or a similar product and dry it completely before replacing the battery. Test the fob afterward to see if it is functioning. If fiat keys replacement doesn't function, it may have to be reprogrammed. This is usually handled by a professional or dealer auto locksmith.

If the key is more recent and was not programmed to your vehicle, it will likely need to be replaced completely. A professional automotive locksmith can do this job. The locksmith will require the key cut to match the car's ignition. They'll also need to program the fob into your car's system. This is a quick and affordable process that can usually be completed within the same day.

Receiver Module Issues

Your 500 key fob might be inoperable because it's out of range. The remote typically has 30 feet of range or less, and if it's too far from your car, it will not 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 called a "button" or "watch") and the fob isn't working It could be because of an internal circuit board issue. In most cases, reprogramming the fob will resolve this problem. You can find the steps for most vehicles on YouTube or in the owner's manual.

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

In rare cases, the fob may become desync'd with your vehicle because of software or hardware issues. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain instances it may be necessary to reinstall the program in your body control module, as well.

Interference

In addition to a dead coin battery the key fob could not be receiving or transmitting the signal due to interference. This can occur when the keyfob's location is in close proximity to a radio transmitter like a cellphone or radar detector. The key fob could not function due to a bad connection to the buttons water damage or damage to the internal chips.

If your key fob suddenly stopped working, or you've tried everything at home to fix it (e.g. replacing batteries, reprogramming or using the spare key fob, you could have a defective receiver module on your 500. The receiver module, which is located under the dashboard, receives radio frequency signals from your key fob. It converts the signals into electronic commands which are then read by the vehicle.

Fortunately, there's an easy way to reset every single system on board in your 500 device, including the key fob. Disconnect the battery 12 volt for approximately 15 minutes by disconnecting the negative cable first then the positive cable. Reconnect the battery. This will clear out any remaining electricity and then restart the car's computers. This can help you get your key fob working again. If the issue continues, you should consult an expert technician. They will be able to identify the exact cause of issues.