Reasons Your Fiat 500 Key Fob Won't Work

A key fob with the fiat 500 number is a great way to open the doors and start the car. However, there are numerous reasons why the fob may stop working. This could be due to a dead coin-battery or water damage, receiver modules issues, and interference.

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Dead Coin Battery

A dead battery is probably the most common cause of your 500 key fob being inoperative. Modern key fobs operate with a restricted operating range, and must be within a few feet of the car to operate. If you are not within your vehicle, and you hit the keyfob, it will not respond, and display the message "Key Fob Not Detected".

If this happens, simply replace the battery in the coin cell (Part number CR2032) by a new one from a reliable brand such as Panasonic, Duracell, or Energizer. They are available at your 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 will flash and the key fob will operate the lock and unlock switches.

If the key fob won't work after replacing the battery, it might be damaged by water that blocks it from communicating with the receiver module in your vehicle. Water damage can happen in a variety of ways, such as simply splashing or submerging your key fob in saltwater at the beach. If you suspect your fob was exposed to water, try placing it in a dry rice bag to pull the moisture back out. If this isn't working, you'll require your fob to be reprogrammed either by an auto locksmith or a dealer.

Water Damage

Damage to the water supply can occur if you submerge the fob in the ocean or wash it in a washing machine. Saltwater poses a particular risk to the fob's circuit board and can cause it to short out and eventually end up dying. It's not a good thing to let the fob get wet however, but don't give it up in the event that you accidentally drop it in water, or fail to take it out of your pants pocket.

Take the battery off first. Before replacing the battery clean the electronic chip using isopropyl or similar products. Test the fob afterward to determine if it's functioning. If the key isn't working it could need to be programmed again. This is typically done by a dealer or professional auto locksmith.

If the key you have is older and is not programmed for your vehicle then you'll need to replace it completely. This is a simple procedure that can be completed by a professional locksmith for automotive use. The locksmith will have to cut the key to match the ignition in your vehicle. The locksmith will also need to program your fob into the car's system. This is a quick and inexpensive process that is usually completed within the same day.

Receiver Module Issues

The 500 key fob you have may not function because it's out of range. The remote usually has an area of 30 feet or less, and if it's too far from your car, it won't respond to your commands. This can be fixed by moving it closer to your vehicle until it starts responding.

If you've replaced the battery on your coin (commonly called"button" or "button" or "watch") and the fob isn't working, it could have an internal circuit board issue. Reprogramming the fob usually resolves the issue. The instructions are available for most vehicles on YouTube or in the owner's manual.

You may need to replace the metal clips that hold the battery of your coin in place. If they lose tension, it can prevent the coin battery from sitting properly and could cause your remote to malfunction.

In rare cases the fob might become desync'd with your vehicle due to software problems or hardware issues. This could be a huge headache, but you can usually resolve this issue by visiting a local dealer or auto locksmith to reprogram your fob. In some cases they may have to reinstall the program in your body control module, too.

Interference

In addition to a dead coin battery The key fob might not be receiving or transmitting an signal due to interference. This could occur if the key fob is located near radio transmitters (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob might not function include a poor connection to the buttons, damage to the internal chip or water damage.

If your key fob suddenly stopped working, or if you have tried everything at home to fix it (e.g. You might have a damaged 500 receiver module if you've tried replacing the battery, reprogramming it, or using a spare key fob. The receiver module, located beneath the dashboard, picks up radio frequency signals from your key fob. It transforms the signals into electronic commands that are then interpreted by the vehicle.

Luckily, there is an easy way to reset all of the onboard systems in your 500 device, including the key fob. Disconnect the battery 12 volt for about 15 minutes, by removing the negative cable and then the positive cable. Reconnect the battery. This will remove any remaining electricity, and restart the computer in your car. This could help you get your key fob working again. If the problem persists you should seek out an expert technician. They will be able diagnose the root cause of any problems.