Reasons Your fiat 500 key replacement 500 Key Fob Won't Work

A key fob for Fiat 500 makes it simple to open doors and start your car. There are many reasons why the key fob might stop working. It could be due to a dead battery, damaged receiver module, water damage issues, or interference.

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Dead Coin Battery

A dead battery is the most frequent cause of your 500 key fob that isn't working. Modern key fobs come with a limited operating range and should be within only a few feet from the vehicle to function. If you are far from 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, simply replace the battery of your coin cell (Part number CR2032) with a new one from a reputable manufacturer such as Panasonic, Duracell, or Energizer. You can usually find them in your local hardware store, or online.

You can test the battery in the coin-cell by pressing the buttons while you are standing close to your Fiat 500. The car will blink its parking lights and the key fob should operate the lock and unlock switches.

If the key fob won't function after replacing the battery, it may have water damage that prevents it from connecting to the receiver module in your car. Water damage can happen in many ways, such as the simple splash or submerging the key fob saltwater at the beach. If you suspect that your fob was exposed to water, try placing it in a dry rice bag to pull the moisture out. If this isn't working, you'll require your fob to be replaced by an auto locksmith or dealer.

Water Damage

Water damage can occur if you submerge the fob in the ocean or wash it in a washer. Saltwater can be particularly harmful to the fob's circuit board, causing it to short out and eventually die. Getting the fob wet is not a good idea but if you accidentally drop it in the water in a cup or forget to take it out of your pocket before you run the washer do not give up hope.

Take the battery off first. Clean the electronic chip using isopropyl alcohol or another similar product and then dry it completely before replacing the battery. Then check the fob to see if it works. If the fob doesn't work, it might need to be reset. This is usually handled by an auto locksmith or dealer.

If your key is old and is not programmed for your vehicle it is necessary to replace it completely. This is a simple procedure which can be accomplished by a professional locksmith for automotive use. The locksmith will need the key to be cut to match your vehicle's ignition. They'll also need to program the fob into the car's system. This is an affordable and quick procedure that can be completed on the same day.

Receiver Module Issues

Your 500 key fob might stop working because it is out of range. The remote has a range of 30 feet. So should you be too far from your car it won't respond to your commands. This can be easily fixed by moving it closer to your vehicle until it begins responding.

If you've replaced the battery in your coin (commonly known as a "button" or "watch") and the fob won't work It could be because of an internal circuit board issue. Reprogramming the fob typically resolves the issue. You can find the procedure for most vehicles on YouTube or in the owner's manual.

It may be necessary to replace the clips made of metal that hold the coin batteries in their place. If they become loose, it may prevent your battery from being properly seated and cause your remote to malfunction.

In rare cases the fob may be out of sync with your vehicle because of software or hardware problems. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In some cases it may be necessary to reinstall the software in your body control module, too.

Interference

Interference can also cause the key fob not to receive or transmit the signal. This could happen when the keyfob is in close proximity to a radio transmitter, like a cell phone or radar detector. The key fob might not function due to a poor connection to the buttons or water damage, or damage to the internal chips.

If your key fob suddenly stopped working, or if you have tried everything at home to fix it (e.g. replacing the battery, reprogramming, and using the spare key fob, you may have a malfunctioning receiver module on your 500. The receiver module, located beneath the dashboard, detects radio frequency signals from your key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy way to reset every single system on board in your 500 keys, including the key fob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then reconnect the battery. This will remove any remaining electricity, and allow you to restart the car's computer. This can help you get your key fob to work again. If the issue persists you should seek out a certified technician. They can determine the exact cause of your problems.