Reasons Your Fiat 500 Key Fob Won't Work

A key fob from fiat 500 duplicate key 500 is a convenient way to open the doors and begin the car. There are many reasons the fob could stop working. This includes a dead battery or water damage, problems with receiver modules, as well as interference.

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Dead Coin Battery

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

If this happens, replace the battery of your coin cell (Part number CR2032) by a new one from a reputable brand such as Panasonic, Duracell, or Energizer. You can find them in the local hardware store or online.

After you've replaced the battery in the coin cell, you can test it by standing in front of your fiat car key replacement 500 and pressing the buttons. The parking lights will flash and the key fob should operate the lock and unlock switch.

If your fob's key isn't working even after replacing the battery, there might be water damage that is preventing it from communicating with the module in your vehicle. Water damage can occur in many ways, such as a simple splash or submerging the key fob in saltwater at the beach. If you believe your fob was exposed to water, place it in a rice bag to draw out the moisture. If this fails, you'll need to have your fob replaced by an auto locksmith or dealer.

Water Damage

While the fob comes with rubber seals that keep water from the electronic chip inside it, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater poses a particular risk to the circuit board of the fob which causes it to short out and eventually die. If you get the fob wet, it's not a good idea but if you drop it in an empty cup of water, or don't remember to take it out of your pants pocket prior to running the washing machine Don't give up hope.

First remove the battery from the fob. 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 test if it works. If the key fiat 500 isn't working it could need to be reset. This is usually handled by a professional or dealer auto locksmith.

If the key you have is older and not programmed for your vehicle it is necessary to replace it completely. A professional locksmith for cars can do this job. The locksmith will need the key to be cut to match your car's ignition. They will also need to reprogram the fob to the system of your car. This is a cheap and quick process that can be completed within the same day.

Receiver Module Issues

Your 500 key fob might not work because it's out of range. The remote has a range of 30 feet. So in the event that you are far from your vehicle it won't be able to respond to your commands. This can easily be resolved by moving closer to your vehicle until it begins responding.

If you've replaced the coin battery (commonly called a "button" or "watch") and your fob doesn't function It could be because of an internal circuit board problem. In the majority of cases, reprogramming your fob can resolve the problem. You can find the instructions for most vehicles on YouTube or in the owner's guide.

It is sometimes necessary to replace the metal clips that hold the coin batteries in place. If they lose tension it can prevent the battery from sitting properly and could result in the malfunction of your remote.

In rare instances it is possible that the fob will become disconnected from your vehicle due to software or hardware issues. This can cause a major problem, but you can often fix this by visiting an auto locksmith to reprogram your fob for you. In some cases they might need to install the software again in your body control module, as well.

Interference

Interference can also cause the key fob to be unable to receive or transmit an signal. This can occur when the keyfob's location is in close proximity to a radio transmitter like a cell phone or radar detector. Other reasons why the key fob might not work could be due to a weak connection to the buttons or damage to the internal chip or water damage.

If the key fob has been unable to function for a while in the middle of the night and you've tried everything you can at home to solve it e.g. battery replacement, reprogramming and using the spare key fob, you may have a faulty receiver module on your 500. The receiver module is located under the dash and receives the radio frequency signals from the key fob. It transforms the signals into electronic commands, which are then interpreted by the vehicle.

There is a simple way to reset the 500's in-board system including the keyfob. Disconnect the battery of 12 volts for about 15 minutes by removing the negative cable first then the positive cable. Then reconnect the battery. This will erase any remaining electrical charge, and then restart the car's computer. This can help get your key fob working again. If the issue persists you should speak with a certified technician. They'll be able to diagnose the exact cause of your problems.