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Reasons Your Fiat 500 Key Fob Won't Work


A key fob for the Fiat 500 is a convenient way to unlock the doors and get started the car. However, there are many reasons why the key fob might stop functioning. This includes a dead battery or water damage, issues with the receiver module, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote that appears similar to the Ilco brand. It needs to be professionally programmed (click here to find local locksmiths for automotive locksmiths). It comes with lock, unlock and trunk buttons.

Dead Coin Battery

A dead battery is the main reason for your 500 key fob not functioning. Modern key fobs have a limited operating range and must be within just a few feet of the car to operate. If you're far from your vehicle and you press the keyfob button, it will not respond and display the message "Key Fob Not Detected".

If this happens, replace the coin cell battery (Part number CR2032) with a new one from a reputable manufacturer like Panasonic, Duracell, or Energizer. They can be found in your local hardware store or online.

You can test the battery in the coin-cell by pressing the buttons while you're standing close to your Fiat 500. The parking lights should light up and the key fob will operate the lock and unlock switches.

If your key fob still isn't working even after replacing the battery, it might be water damage that hinders it from communicating with the module inside your vehicle. Water damage can happen in many ways, including an easy splash or submerging the key fob into saltwater at the beach. If you suspect that your fob was exposed to water, try putting it in a dry rice bag to pull the moisture out. If that doesn't work, your fob is likely to need to be reset by a professional auto locksmith or the dealer.

Water Damage

While the fob has some rubber seals to keep water out of the electronic chip inside, submerging it in the ocean or washing it in a machine can cause water damage. Saltwater is particularly dangerous to the fob's circuit board which causes it to short out and eventually die. If you get the fob wet, it's not an ideal choice however, if you drop it in the water in a cup or forget to remove it from your pants pocket before running the washer do not give up hope.

First, remove the battery from the fob. Before replacing the battery clean the electronic chip with isopropyl, or a similar product. Then try the fob and test if it works. If the key doesn't work, it may need to be reprogrammed. This is usually done by an auto locksmith or dealer.

If the key you have is older and has not been programmed for your car You will need to replace it completely. A professional locksmith for cars can do this job. The locksmith will need the key cut to match the car's ignition. The locksmith will also need to reprogram your fob in the vehicle's system. This is an affordable and quick process that could be completed on the same day.

Receiver Module Issues

Your 500 key fob may stop working because it is out of range. The remote's range is of 30 feet. Therefore, in the event that you are far from your vehicle it won't respond to your commands. This can be easily fixed by moving closer to your vehicle until it begins responding.

If your fob isn't working 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 your fob can resolve the issue. You can find the procedure for most vehicles on YouTube or in the owner's manual.

You may have to replace the metal clips that hold the coin battery. If they lose tension, they could stop the battery from sitting properly and could cause your remote to malfunction.

In rare cases the fob might be out of alignment with your vehicle because of hardware or software issues. This can cause a major headache, but you can often fix this by visiting an auto locksmith to reprogram your fob for you. In some cases, they may need to reinstall the program in your body control module, too.

Interference

Interference can also cause the key fob to not receive or transmit an signal. This is possible when the key fob is in proximity to an electronic radio transmitter (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons why the key fob might not function could be due to a weak connection to the buttons or damage to the internal chip, or water damage.

If your key fob suddenly stopped working, or you've tried everything at home to fix it (e.g. replacing the battery, reprogramming it and using the spare key fob, it could have a faulty receiver module on your 500. The receiver module, located under the dashboard, is able to pick up radio frequency signals from your key fob. It converts the signals into electronic commands that are then interpreted by the vehicle.

Fortunately, there's an easy way to reset every single system on board in your 500 keys, including 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 eliminate any remaining electric current, and also restart the computer in your car. This can help get your key fob to work again. If fiat punto keys persists you should consult an expert technician. They will be able diagnose the exact cause of any issues.