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Reasons Your fiat 500 key fob (this link) Won't Work

A fiat 500 key fob is a convenient method to unlock the doors and get started the car. However, there are numerous reasons why the fob may stop working. This could be due to a dead battery and water damage, as well as issues with the receiver module, and interference.

This listing is for an NEW replacement fiat 500 locked keys in car Flip Key Remote - an exact replica of the Ilco brand that must be programmed professionally by a local locksmith (click here for Locksmith Search). Includes trunk, lock and unlock buttons.

Dead Coin Battery

A dead battery is the main cause of your 500 key fob that isn't working. Modern key fobs have a limited range of operation, and should be within a few feet of the car to operate. If you're far from 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 occurs, replace the coin-cell battery (Part Number CR2032) with a new battery of a reliable brand, like Panasonic Duracell or Energizer. You can find them in your local hardware store or programmed online.

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 should be able to operate the lock and unlock switches.

If your fob's key does not work after replacing the battery, there could be water damage that prevents it from communicating with the module inside your vehicle. Water damage can happen in a variety of ways, such as the simple splash or submerging the key fob into saltwater 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 back out. If this does not work, you'll need to have your fob reprogrammed either by an auto locksmith or dealer.

Water Damage

The fob does have rubber seals that keep water from the chip's electronic circuit and out of the ocean or washing it in a machine could cause water damage. Saltwater can be particularly harmful to the circuit board of the fob and can cause it to short out and eventually end up dying. It's not good to submerge the fob in water however, but don't give it up in the event that you accidentally drop it in water or fail to take it out of your pants pocket.

Take the battery off first. Clean the electronic chip using isopropyl ethanol or a similar product and then dry it thoroughly before replacing the battery. Then, test the fob to check if it functions. If the key doesn't function it could need to be reprogrammed. This is usually done by an auto locksmith or dealer.

If the key is a newer model and was not programmed to your vehicle, it will likely need to be replaced completely. A professional locksmith in the automotive industry can carry out this simple task. The locksmith will require the key to be cut to match the car's ignition. They will also need to reprogram the fob for the system of your car. This is a low-cost and fast process that can be completed in the same day.

Receiver Module Issues

The 500 key fob you have may 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 be able to respond to your commands. This can be fixed by moving it closer to your vehicle until it begins responding.

If your fob doesn't work after replacing the battery inside the coin, which is also known as a "button", "watch" or "button", it could be due to a problem with the circuit board inside. Reprogramming the fob usually resolves the issue. You can find the instructions for the majority of vehicles on YouTube or in the owner's manual.

You may need to replace the metal retaining clips that hold the coin battery in place. If they lose tension, it could prevent the battery from being seated properly and cause your remote to malfunction.

In rare instances the fob might become desync'd with your vehicle due to software problems or hardware issues. This can cause a major issue, but you are able to usually resolve this issue by visiting a local dealer or auto locksmith to reprogram your fob for you. In certain instances the software may require reinstallation in your body control modules.

Interference

Interference can also cause the key fob to not receive or transmit an signal. This can occur when the keyfob 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 with the buttons water damage or damage to the internal chips.

If the key fob stopped working one day in the middle of the night or even after trying everything you can at home to resolve it e.g. replacing the battery, reprogramming, and using the spare fiat 500 key key fob, you might have a malfunctioning receiver module on your 500. The receiver module is located under the dash and is able to pick up the radio frequency signals from the key fob. It converts them into electronic commands that the vehicle interprets.

There is a simple way to reset the 500's internal system, including the keyfob. Disconnect the battery for 15 minutes by taking off first the negative cable, then the positive cable. Reconnect the battery. This will remove any remaining electricity, and allow you to restart the car's computer. This will help you get your key fob to function again. If the issue persists, you should consult an expert certified technician. They will be able to identify the root cause of your issues.