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Reasons Your Fiat 500 Key Fob Won't Work
A key fob for Fiat 500 makes it easy to open doors and start your vehicle. However, there are a variety of reasons the fob could stop functioning. These include a dead coin battery damage to the receiver module, problems, and interference.
This listing is for a NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It needs to be professionally programmed (click here to find local locksmiths for your vehicle). It includes lock, unlock, and trunk buttons.
Dead Coin Battery
A dead battery is the main cause of your 500 key fob that isn't working. Modern key fobs operate with a limited operating range and must be within some feet of the car to operate. If you're not close to your vehicle and press the key fob button, the car won't respond and will display the "Key Fob Not Detected" message in the instrument cluster.
If this happens, simply replace the battery on your coin cell (Part number CR2032) by a new one from a reputable brand like Panasonic, Duracell, or Energizer. You can typically find them at your local hardware store or online.
You can test the battery on your coin-cell by pressing the buttons while you're standing close to your Fiat 500. The parking lights should blink and the key fob will operate the lock and unlock switches.
If the key fob won't work after replacing the battery, it may have water damage that prevents it from connecting to the receiver module inside your car. Water damage can occur in many ways, such as a simple splash or submerging the key fob saltwater at the beach. If you think your fob was exposed to water, place it in a bag of rice to draw out the moisture. If that doesn't work your fob may need to be reprogrammed by a professional auto locksmith or dealer.
Water Damage
While the fob comes with rubber seals to keep water from the chip's electronic circuit it, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater is especially dangerous to the fob's circuit board which causes it to short out and eventually end up dying. In the event that you let your fob get wet, it's not an option, but if you drop it in an empty cup of water, or fail to take it out of your pants pocket before running the washer, don't give up hope.
First remove the battery from the fob. Clean the electronic chip using isopropyl or a similar product and dry it thoroughly before replacing the battery. Check the fob to check if it's working. If the key still doesn't work, it might need to be reprogrammed. This is usually done by an auto locksmith or dealer.
If the key is a newer model and has never been programmed to your car It is likely that it needs to be replaced completely. This is a straightforward process that can be handled by a professional automotive locksmith. The locksmith will need the key to be cut to match your vehicle's ignition. The locksmith will also need to reprogram the fob into the vehicle's system. It's a simple and cost-effective procedure that can usually be completed in the next day.
Receiver Module Issues
One of the most common reasons why your 500 key fob could stop working is because it's out of range. The remote has a range of 30 feet. So when you're too far from your car, it won't respond to your commands. It is possible to fix this by moving the remote closer to your car until it responds.
If you've replaced your coin battery (commonly known as"button" or "button" or "watch") and the fob won't work It could be because of an internal circuit board issue. In most cases, reprogramming the fob will fix the problem. You can find the instructions for the majority of vehicles on YouTube or in the owner's guide.
It may be necessary to replace the clips made of metal that hold the coin batteries in place. If they lose tension, it could prevent the coin battery from being properly seated and could cause your remote to malfunction.
In rare instances the fob might become desync'd with your vehicle due to software issues or hardware issues. You can fix this problem by visiting your local auto-locksmith or dealer to reprogram your key fob. In some instances they might need to reinstall the software on your body control module too.
Interference
Interference can also cause the key fob to not be able to receive or transmit an signal. This could happen when the key fob is in close proximity to a radio transmitter, like a cell phone or radar detector. The Keylab might not function include a poor connection to the buttons and internal chip or water damage.
If the key fob has stopped working one day in the middle of the night, or after trying everything you can do at home to fix it e.g. replacing the battery, reprogramming, and using the spare key fob, you could have a faulty receiver module on your 500. The receiver module is situated under the dash, and it picks up the radio frequency signals from the key fob. It then converts them into electronic commands that the vehicle interprets.
Luckily, there is an easy method to reset all of the on-board systems in your 500 and include the key fob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Then reconnect the battery. This will remove any remaining electrical charge, and then restart the computer in your car. This will help you get your key fob to work again. If the issue continues, you should speak with an expert technician. They will be able to determine the exact cause of any problems.