This Week's Most Popular Stories About Fiat Panda Key Fob Replacement Reasons Your Fiat 500 Key Fob Won't Work

A key fob with the fiat 500 number 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 includes a dead battery or water damage, issues with the receiver module, and interference.

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Dead Coin Battery

The most frequent reason that your 500 key fob will not function is an inactive battery. Modern key fobs only have an operating range that is limited and must be within only a few inches from the vehicle to work. If you are far from your vehicle, and you push the keyfob button it won't respond and display the message "Key Fob Not Detected".

If this happens If this happens, replace the battery in the coin-cell (Part Number CR2032) by a new one from a reputable brand like Panasonic Duracell or Energizer. They are available at your local hardware store, or online.

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

If the fob's key doesn't function after replacing the battery, it might have water damage that prevents it from communicating with the receiver module in your car. Water damage can occur in a variety of ways, ranging from a light splash to submerging the fob salt water at the beach. If you suspect that your fob has been exposed to water, you can place it in a bag of rice to draw out the moisture. If that doesn't work your fob is likely to need to be reprogrammed by an experienced 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 can cause water damage. Saltwater can be particularly harmful to the fob's circuit board which causes it to short out and eventually end up dying. It's not good to get the fob wet however, but don't give it up in the event that you accidentally drop it in the water or don't take it out of your pants pocket.

Take the battery off first. Clean the electronic chip using isopropyl alcohol or a similar product and dry it thoroughly before replacing the battery. Test the fob next to see if it is working. If the key doesn't function, it may have to be reset. This is usually handled by a professional or dealer auto locksmith.

If the key is newer and hasn't been programmed to your car It will most likely need to be replaced completely. This is a simple process that can be carried out by a professional locksmith for automotive use. The locksmith will require the key cut to match your vehicle's ignition. They will also need to reprogram the fob for your vehicle's system. This is a low-cost and fast process that can be completed on the same day.

Receiver Module Issues

One of the main reasons your 500 key fob might stop functioning is because it's out of range. The remote typically has 30 feet of range or less and if it's far from your vehicle, it will not respond to your commands. You can easily solve this issue by moving the remote closer to your vehicle until it responds.

If you've replaced the coin battery (commonly called"button" or "button" or "watch") and the fob isn't working it could be due to an internal circuit board issue. Reprogramming the fob usually resolves this problem. There are G28 Car Keys on how to do this for the majority of vehicles by searching YouTube or checking out the owner's manual.

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 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 or hardware issues. This could be a huge problem, but you can often fix this by visiting a local dealer or auto locksmith to have them reprogram your fob for you. In some instances it may be necessary to install the software again in your body control module as well.

Interference

Interference can also cause the key fob to not be able to receive or transmit a signal. This can happen when the key fob is close to radio transmitters (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob might not function could be due to a weak connection to the buttons, damage to the internal chip, or water damage.

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

Luckily, there is an easy method of resetting all on-board systems in your 500, including the key fob. Disconnect the battery 12 volt for approximately 15 minutes by taking off the negative cable first then the positive cable. Reconnect the battery. This will eliminate any remaining electricity and then restart the car's computers, which could allow you to get your key fob working again. If the issue persists you should speak with an expert technician. They can determine the exact cause of your issues.