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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 makes it easy to open doors and start your vehicle. There are many reasons the fob may stop working. These include a dead coin battery or damage to the receiver module, water issues, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote - like the Ilco brand that must be professionally programmed by a local locksmith (click here to search for a Locksmith Search). It includes lock, unlock, and trunk buttons.

Dead Coin Battery

The most frequent reason why the 500 key fob won't function is an inactive battery. Modern key fobs come with a restricted operating range, and must be within some feet of the vehicle to function. If you're not close to your vehicle and 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 happens If this happens, replace the battery in the coin-cell (Part Number CR2032) with a new battery of a trusted brand like Panasonic Duracell or Energizer. They are usually available at your local hardware store, or online.

After you've replaced the battery of your coin cell It is possible to test it by standing close to your Fiat 500 and pressing the buttons. The parking lights should blink and the key fob will operate the lock and unlock switches.

If your key fob still does not work after replacing the battery, there may be water damage that prevents it from communicating with the module in your vehicle. Water damage can happen in a number of ways, ranging from an accidental splash to submerging the fob into salt water at the beach. If you suspect that your fob was exposed to water, put it in a dry rice bag to draw the moisture out. If fob battery doesn't work, your fob may need to be reprogrammed by a professional auto locksmith or the dealer.

Water Damage

Damage to the water supply can occur if you submerge the fob in the ocean, or wash it in a washing machine. Saltwater is especially dangerous to the fob's circuit board which causes it to short out and eventually end up dying. Getting the fob wet is not an ideal choice however, if you drop it into a cup of water or don't remember to take it out of your pants pocket before running the washing machine Don't give up hope.

Take the battery off first. Clean the electronic chip with isopropyl or a similar product and dry it thoroughly before replacing the battery. Next test the fob to check if it functions. If the key doesn't work, it might need to be changed. This is usually handled by a professional or dealer auto locksmith.

If your key is older and not programmed to work with your vehicle then you'll need to replace it completely. A professional locksmith for cars can complete this simple process. The locksmith will need the key to be cut to match your vehicle's ignition. They'll also have to reprogram the fob for the car's system. This is an affordable and quick process that can be completed within the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key fob might stop working is because it's out of range. The remote has a maximum range of 30 feet, so in the event that you are far from your vehicle, it won't respond to your commands. It can be solved by moving closer to your vehicle until it begins responding.

If you've replaced your coin battery (commonly known as"button" or "button" or "watch") and your fob still won't work 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 on the majority of vehicles by searching YouTube or checking out the owner's manual.

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

In rare instances, the fob might be out of the vehicle's sync because due to hardware or software issues. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In some instances they may have to reinstall the software in your body control module too.

Interference

Interference can also cause the key fob to not receive or transmit the signal. This can happen when the key fob is located near an electronic radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob might not function due to a poor connection with 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 solve the issue (e.g. replacing the battery, reprogramming it and using the spare key fob, you could have a faulty receiver module on your 500. The receiver module, located beneath the dashboard, is able to pick up radio frequency signals from your key fob. It converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy way to reset all on-board systems in your 500, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Then reconnect the battery. This will remove any remaining electricity and restart the car's computers. This can help get your key fob working again. If the issue persists, you should consult an expert technician. They'll be able determine the root of your issue.