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Reasons Your Fiat 500 Key Fob Won't Work
A fiat 500 key fob is a convenient method to unlock the doors and get started the car. There are many reasons why the key fob might stop working. These include a dead battery or damage to the receiver module, water problems, and interference.
This listing is for a NEW replacement Fiat Flip Key Remote that appears similar to the Ilco brand. It needs to be professionally programmed (click here to search for local locksmiths for your vehicle). This remote includes lock, unlock and trunk buttons.
Dead Coin Battery
The most frequent reason that your 500 key fob doesn't work is the battery is dead. Modern key fobs only have only a limited range of operation and must be within a few inches of the vehicle in order to work. If you are further away from your vehicle and hit the keyfob, it will not respond, and display the message "Key Fob Not Detected".
If this happens, replace the battery in the coin cell (Part number CR2032) with a brand new one from a reputable brand 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 parking lights should flash and the key fob should operate the lock and unlock switches.
If your fob's key isn't working even after replacing the battery, there could be water damage that is preventing it from communicating with the module inside your vehicle. Water damage can happen in a variety of ways, ranging from an accidental splash to submerging the fob salt water at the beach. If you suspect that your fob has been exposed to water, place it in a bag of rice to draw out the moisture. If this doesn't work your fob may need to be reset by an experienced auto locksmith or by the dealer.
Water Damage
Damage to the water supply can occur if you immerse the fob in the ocean, or wash it in a washer. Saltwater can cause the circuit board to become shorted and eventually cease to function. It's not a good thing to submerge the fob in water however, don't give it up when you accidentally drop it in water or forget to remove it from your pants pocket.
Remove the battery first. Clean the electronic chip with isopropyl ethanol or a similar product and then dry it completely before replacing the battery. Test the fob afterward to determine if it's working. If the key isn't working, it may need to be reprogrammed. This is typically done by a professional or dealer auto locksmith.
If the key is newer and hasn't been programmed to your car It will most 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 cut to match your car's ignition. They'll also need to reprogram the fob to your car's system. This is an affordable and fast process that can be completed in the same day.
Receiver Module Issues
The 500 key fob could stop working because it is out of range. The remote has a range of 30 feet, so should you be too far away from your vehicle it won't be able to respond to your commands. It can be solved by moving closer to your vehicle until it starts responding.
If you've replaced the coin battery (commonly known as a "button" or "watch") and your fob still won't work, it could have an internal circuit board issue. In the majority of cases, reprogramming your fob will solve the issue. You can find directions on how to do this for most vehicles by searching YouTube or reading the owner's manual.
It could be necessary to replace the clips made of metal that hold the coin batteries in the correct position. If they loose tension it could hinder the coin battery from being seated properly and could cause the remote to malfunction.
In rare instances, the fob might be out of connection with your vehicle as a result of hardware or software problems. This can be a major headache, but you can often fix this by visiting an auto locksmith to have them reprogram your fob for you. In some cases, they may need to reinstall the software in your body control module as well.
Interference
Interference can also cause the key fob to be unable to receive or transmit signals. This is possible when the key fob is located near radio transmitters (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob might not work because of a problem to the buttons or water damage, or damage to the internal chips.
If the key fob failed to work one day in the middle of the night or even after trying every option at home to resolve it e.g. replacing the battery, reprogramming, and using the spare key fob, it could have a malfunctioning receiver module on your 500. The receiver module, which is located beneath the dashboard, receives radio frequency signals from your key fob. It transforms the signals into electronic commands that are then read by the vehicle.
There's a simple method to reset the 500's on-board system including the keyfob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then reconnect the battery. This will clear out any remaining electricity and restart the car's computers, which can help get your key fob working again. If the issue persists, you should consult an expert technician. They will be able to determine the exact cause of your issues.