Reasons Your fiat car key replacement 500 Key Fob Won't Work

A key fob from lost fiat 500 key 500 allows you to easily open doors and start your vehicle. However, there are numerous reasons why the fob won't be functioning. This includes a dead coin-battery or water damage, problems with receiver modules, as well as interference.

This listing is for a NEW replacement fiat key fiat 124 spider key fob not working Flip Key Remote that appears similar to the Ilco brand. It has to be professionally programmed (click here to search for local automotive locksmiths). It comes with lock, unlock and trunk buttons.

Dead Coin Battery

The most frequent reason why your 500 key fob won't function is due to a dead battery. Modern key fobs come with a limited operating range and must be within a few feet of the car to operate. If you're far away from your vehicle and you press the key fob button, the car won't 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) with a brand new one from a reliable brand like Panasonic, Duracell, or Energizer. You can typically find them at your local hardware store, or online.

You can test the battery in the coin-cell by pressing the buttons while standing near your fiat abarth key 500. The car should flash its parking lights and the key fob should be able to operate the lock and unlock switches.

If the fob's remote doesn't function after replacing the battery, it might be damaged by water, which prevents it from connecting to the receiver module inside your vehicle. Water damage can occur through a variety of methods, including the simple splash or submerging the key fob in saltwater at the beach. If you suspect that your fob has been exposed to water, put it in a dry rice bag to pull the moisture out. If this doesn't work the fob might require reprogramming by a professional auto locksmith or by the dealer.

Water Damage

Water damage can occur if you immerse the fob in the ocean, or wash it in a washer. Saltwater is particularly dangerous to the circuit board of the fob and can cause it to short out and eventually end up dying. It's not a good thing to let the fob get wet but don't give up even if you accidentally drop the fob in water or forget to remove it from your pocket.

First, remove the battery from the fob. Before replacing the battery clean the electronic chip with isopropyl, or a similar product. Check the fob to see if it is functioning. If the key does not work, it might need to be reprogrammed. This is usually done by an auto locksmith or dealer.

If your key is a bit older and not programmed for your car then you'll need to replace it completely. A professional automotive locksmith can complete this simple process. The locksmith will need the key cut to match your vehicle's ignition. The locksmith will also have to reprogram your fob into the vehicle's system. It's a simple and inexpensive process that can be completed in the same day.

Receiver Module Issues

Your 500 key fob may be inoperable because it's out of range. The remote has a maximum range of 30 feet, which means when you're too far from your vehicle it will not respond to your commands. It is possible to solve this issue by moving the remote closer to your vehicle until it responds.

If you've replaced the battery in your coin (commonly known as a "button" or "watch") and the fob won't work it could be due to an internal circuit board issue. In most cases, reprogramming the fob can resolve the problem. The instructions are available for the majority of vehicles on YouTube or in the owner's guide.

It could be necessary to replace the metal clips that hold the coin batteries in place. If they lose tension, they could stop the battery from being properly seated and can result in the malfunction of your remote.

In rare cases the fob can become out of alignment 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 certain instances it is possible that the software will require reinstallation into your body control modules.

Interference

In addition to a dead battery on a coin the key fob could not be receiving or transmitting an signal due to interference. This can occur when the keyfob's location is in close proximity to a radio transmitter like a cell phone or radar detector. Other reasons the key fob may not function may be a lack of connection to the buttons and internal chip, or water damage.

If the key fob has been unable to function for a while out of the blue or even after trying everything you can at home to solve it e.g. replacing the battery, reprogramming, and using the spare key fob, you might have a damaged receiver module on your 500. The receiver module is located 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.

Fortunately, there's an easy method to reset all on-board systems in your 500 and include 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 electrical charge, and then restart the computer in your car. This can help get your key fob working again. If the issue persists, you should consult an expert technician. They will be able to diagnose the exact cause of your problems.