Reasons Your Fiat 500 Key Fob Won't Work
A fiat 500 key fob is a convenient method to open the doors and start the car. There are a myriad of reasons the fob won't work. This could be due to a dead coin battery, damage to the receiver module, water issues, and interference.
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Dead Coin Battery
A dead battery is the most common reason for your 500 key fob that isn't working. Modern key fobs have a limited range of operation and must be within just a few inches of the vehicle to work. 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 happens, replace the coin-cell battery (Part Number CR2032) by a brand new one from a reputable brand like Panasonic Duracell or Energizer. You can find them in the local hardware store or online.
After you've replaced the coin cell battery You can test it by standing close to your Fiat 500 and pressing the buttons. The parking lights should light up and the key fob should operate the lock and unlock switches.
If the fob's remote doesn't work after replacing the battery, it might be damaged by water that blocks it from connecting to the receiver module in your vehicle. Water damage can happen in a number of ways, from an accidental splash to submerging the fob salt water at the beach. If you think your fob was exposed to water, put it in a rice bag to draw out the moisture. If this doesn't work, you will need to have the fob changed by an auto locksmith or dealer.
Water Damage
Damage to the water supply can occur if you immerse the fob in the ocean, or wash it in a machine. Saltwater poses a particular risk to the fob's circuit board, causing it to short out and eventually end up dying. It's not a good idea to get the fob wet, but don't give it up in the event that you accidentally drop it in water or fail to remove it from your pants pocket.
Remove the battery first. Clean the electronic chip using isopropyl ethanol or a similar product and dry it thoroughly before replacing the battery. Test the fob afterward to see if it is functioning. If the fob doesn't work, it may need to be reprogrammed. This is typically handled by a professional or dealer auto locksmith.
If the key is more recent and was not programmed to your vehicle It is likely that it needs to be replaced completely. A professional automotive locksmith can carry out this simple task. The locksmith will have to cut the key to match the ignition in your vehicle. They'll also have to reprogram the fob to your vehicle's system. This is a fast and affordable process that is usually completed on the same day.
Receiver Module Issues
Your 500 key fob might stop working because it is out of range. The remote typically has a range 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 car until it responds.
If your fob does not work after you replace the battery for the coin, also known as a "button", "watch" or "button", it may be due to a malfunction on the internal circuit board. Reprogramming the fob usually resolves this issue. You can find instructions on how to do this for all automobiles by searching YouTube or checking out the owner's manual.
It is possible to replace the metal clips that hold the coin batteries in their place. If they loose tension they could stop the battery from being seated properly and can cause your remote to malfunction.
In rare cases the fob can become out of alignment with your vehicle because of hardware or software problems. This can cause a major trouble, but you could usually resolve this issue by visiting a local dealer or auto locksmith to have them reprogram your fob. In some cases the software might require reinstallation to your body control modules.
Interference
In addition to a dead battery on a coin, the key fob may not be able to receive or transmit an signal due to interference. This could happen if the key fob is located near the radio transmitter (cell phones, radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob may not function may be a lack of connection to the buttons or damage to the internal chip, or water damage.
If the key fob has failed to work one day suddenly or after trying everything you can do at home to fix it e.g. fiat ducato replacement key could have a malfunctioning 500 receiver module after you've tried replacing the battery, reprogramming, or using an alternative key fob. The receiver module is located under the dash, and it picks up the radio frequency signals from the key fob. It converts the signals into electronic commands which are then processed by the vehicle.
There's a simple method to reset the 500's on-board system including the keyfob. Disconnect the battery 12 volt for about 15 minutes, by taking off the negative cable first then the positive cable. Then, reconnect the battery. This will remove any remaining electricity, and allow you to restart the car's computer. This could help you get your key fob to function again. If the issue continues, you should consult an expert technician. They can identify the exact cause of issues.