Reasons Your Fiat 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 the fob could stop working. This could be due to a dead coin-battery 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 work is the battery is dead. Modern key fobs come with a restricted operating range, and should be within just a few feet of the vehicle in order to function. If you're far away from your vehicle, and you 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 then replace the battery for your coin-cell (Part Number CR2032) by a new one from a reputable brand like Panasonic Duracell or Energizer. They are available at the local hardware store or on the internet.
After you've replaced the battery in the coin cell It is possible to test it by standing next to your Fiat 500 and pressing the buttons. The car will flash its parking lights and the key fob should work the lock and unlock buttons.
If the key fob doesn't work after replacing the battery, it might be damaged by water that blocks it from connecting to the receiver module inside your vehicle. Water damage can occur in a number of ways, ranging from a light splash to submerging the fob into salt water at the beach. If you suspect that your fob has been exposed to water, put it in a bag of rice to draw out the moisture. If this doesn't work, your fob will probably require reprogramming by a professional locksmith or dealer.
Water Damage
Water damage can occur if you immerse the fob in the ocean, or wash it in a washing machine. Saltwater poses a particular risk to the circuit board of the fob which causes it to short out and eventually end up dying. The fob getting wet is not an option but if you drop it in a glass of water or don't remember to take it out of your pants pocket before running the washer and you don't have a chance, don't give in.
First remove the battery from the fob. Clean the electronic chip with isopropyl or a similar product and then dry it completely before replacing the battery. Test the fob afterward to determine if it's functioning. If the fob doesn't work, it may need to be programmed again. This is usually handled by a professional or dealer auto locksmith.
If the key you have is older and not programmed to work with your vehicle then you'll need to replace it completely. This is a simple process that can be completed by a professional locksmith for automotive use. The locksmith will have to cut the key to match the ignition of your car. The locksmith will also need to reprogram your fob into the vehicle's system. This is a simple and affordable process which can be completed in the same day.
Receiver Module Issues
One of the most common reasons your 500 key fob won't be working is because it's out of range. The remote usually has an area of 30 feet or less, and if it's too far from your vehicle, it will not respond to your commands. It's easy to fix this by moving the remote closer to your vehicle until it responds.
If you've replaced your coin battery (commonly known as"button" or "button" or "watch") and your fob still won't work, it could have an internal circuit board issue. In most cases, reprogramming the fob will fix the problem. You can find instructions on how to do this on the majority of vehicles by searching YouTube or looking through the owner's manual.
It could be necessary to replace the metal clips that hold the coin batteries in the correct position. If they loose tension, it could prevent your coin battery from sitting properly, causing your remote to malfunction.
In rare instances, the fob might be out of connection with your vehicle as a result of software or hardware problems. You can fix this problem by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain situations it may be necessary to reinstall the program in your body control module, too.
Interference
In addition to a dead battery on a coin, the key fob may not be receiving or transmitting the signal due to interference. This can happen when the key fob is close to a radio transmitter (cell phones, radar detectors) or any other source of electromagnetic radiation. Other reasons the key fob could not function may be a lack of connection to the buttons and internal chip, or water damage.
If your key fob suddenly stopped working, or you have tried everything at home to fix it (e.g. You might have a damaged 500 receiver module after you've tried replacing the battery, reprogramming it, or using a spare key fob. The receiver module is located under the dash and is able to pick up the radio frequency signals from the key fob. It transforms the signals into electronic commands, which are then processed by the vehicle.
Fortunately, there's an easy method to reset all on-board systems in your 500 device, including the key fob. Disconnect the battery 12 volt for approximately 15 minutes by disconnecting the negative cable first then the positive cable. Reconnect the battery. This will remove any remaining electricity and then restart the car's computer system, which could allow you to get your key fob working again. If the problem persists, you should consult a certified technician. They will be able to identify the root cause of your problems.