Reasons Your Fiat 500 Key Fob Won't Work A key fob for the Fiat 500 is a convenient method to open the doors and begin the car. There are a myriad of reasons the fob won't work. These include a dead battery, damaged receiver module, water damage issues, or interference. This listing is for a NEW replacement Fiat Flip Key Remote that is similar to the Ilco brand. It needs to be professionally programmed (click here to find local locksmiths for automotive locksmiths). It includes lock, unlock and trunk buttons. Dead Coin Battery A dead battery is the most frequent cause of your 500 key fob not functioning. Modern key fobs have an operating range that is limited and must be within just a few inches of the vehicle to function. If you're far away from your vehicle when 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, simply replace the battery in the coin cell (Part number CR2032) with a fresh one from a trusted brand such as Panasonic, Duracell, or Energizer. They can be found in the local hardware store or online. After you've replaced the coin cell battery you can test it by standing next to your Fiat 500 and pressing the buttons. The car should blink its parking lights and the key fob should work the lock and unlock switches. If your key fob still isn't working even after replacing the battery, there might be water damage that is preventing it from interacting with the module in your vehicle. Water damage can occur in a number of ways, ranging from an accidental splash to submerging the fob into salt water at the beach. If you suspect that your fob was exposed to water, put it in a dry rice bag to pull the moisture out. If this isn't working, you'll require your fob to be reset by an auto locksmith or a dealer. Water Damage Damage to the water supply can occur if you immerse the fob in the ocean, or wash it in a washing machine. Saltwater can be particularly harmful to the fob's circuit board that can cause it to short out and eventually end up dying. If you get the fob wet, it's not a good idea but if you drop it into a cup of water or forget to take it out of your pants pocket before running the washing machine, don't give up hope. First remove the battery from the fob. Clean the electronic chip with isopropyl alcohol or a similar product and dry it thoroughly before replacing the battery. Next try the fob and test if it works. If https://www.thekeylab.co.uk/fiat-car-keys/ isn't working it could need to be reprogrammed. This is usually handled by a professional or dealer auto locksmith. If the key is a newer model and has never been programmed to your vehicle It is likely that it needs to be replaced completely. A professional locksmith for cars will be able to complete this process. The locksmith will need the key cut to match your vehicle's ignition. The locksmith also needs to program your fob into the vehicle's system. This is a low-cost and quick procedure that can be completed the same day. Receiver Module Issues One of the main reasons your 500 key fob won't be functioning is that it's out of range. The remote typically has an area of 30 feet or less and if it's far from your car, it won't respond to your commands. You can easily remedy this by moving your remote closer to your car until it responds. If you've replaced the battery on your coin (commonly known as"button" or "button" or "watch") and the fob won't work It could be because of an internal circuit board problem. Reprogramming your fob can resolve the issue. You can find instructions on how to do this for the majority of automobiles by searching YouTube or reading the owner's manual. It may be necessary to replace the metal clips that hold the coin batteries in the correct position. If they lose tension, it can stop your coin battery from sitting properly and cause your remote to malfunction. In rare cases the fob might be out of sync with your vehicle because due to hardware or software issues. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In some cases the software may require reinstallation to your body control modules. Interference Interference can also cause the key fob to not be able to receive or transmit the signal. This is possible when the key fob is in proximity to the radio transmitter (cell phones and radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob might not work include a weak connection to the buttons, damage to the internal chip, or water damage. If the key fob has suddenly stopped working, in the middle of the night and you've tried everything you can at home to fix it e.g. It could be a defective 500 receiver module if you've tried replacing the battery, reprogramming, or using an alternative key fob. The receiver module, located beneath the dashboard, receives radio frequency signals from your key fob. Then, it converts them into electronic commands that the vehicle interprets. Fortunately, there's an easy way to reset all on-board systems in your 500 device, including the key fob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then, reconnect the battery. This will remove any remaining electricity, and allow you to restart the computer of your car. This can help get your key fob to work again. If the issue continues it is recommended that you consult an expert technician. They'll be able determine the root of your issue.