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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 many reasons why the fob could stop working. This includes a dead coin-battery, water damage, receiver modules issues, and interference.

This listing is for an NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It has to be professionally programmed (click here to find local automotive locksmiths). This remote includes lock, unlock and trunk buttons.

Dead Coin Battery

A dead battery is the most frequent reason for your 500 key fob not working. Modern key fobs operate with a limited range of operation, and should be within a few feet of the vehicle to operate. If you're far from your vehicle and you press the key fob button, the car will not 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 new one from a reputable brand such as Panasonic, Duracell, or Energizer. They are available at the local hardware store or on the internet.

After you've changed the battery on the coin cell, you can test it by standing next to your Fiat 500 and pressing the buttons. The car will blink its parking lights and the key fob should operate the lock and unlock buttons.

If your fob's key doesn't work even after replacing the battery, it may be water damage that has prevented it from communicating with the module in your vehicle. Water damage can happen in a number of ways, from a light splash to submerging your fob in 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 doesn't work, your fob may need to be reprogrammed by an experienced auto locksmith or dealer.

Water Damage

The fob does have rubber seals that keep water out of the electronic chip inside and out of the ocean or washing it in a machine can cause water damage. Saltwater is especially dangerous to the circuit board of the fob, causing it to short out and eventually end up dying. In the event that you let your fob get wet, it's not an option however, if you drop it into a glass of water or fail to take it out of your pants pocket prior to running the washing machine do not give up hope.

First take the battery off the fob. Clean the electronic chip using isopropyl or a similar product and then dry it completely before replacing the battery. Next, test the fob to check if it functions. If the key doesn't work, it may need to be reset. This is usually done by an auto locksmith or dealer.

If the key is a newer model and was not programmed to your vehicle It is likely that it needs to be replaced completely. A professional locksmith for automotive can carry out this simple task. The locksmith will need the key cut to match your vehicle's ignition. They'll also have to reprogram the fob to the system of your car. This is a low-cost and quick process that could be completed within the same day.

Receiver Module Issues

The 500 key fob you have may be inoperable because it's out of range. The remote usually has a range of 30 feet or less and if it's far from your vehicle, it will not respond to your commands. You can easily remedy this by moving your remote closer to your vehicle until it responds.

If your fob does not work after replacing the battery inside the coin, which is also known as a "button", "watch" or "button" it could be due to a problem with the internal circuit board. Reprogramming your fob can resolve this issue. fiat 500 replacement key fob can find the steps for the majority of vehicles on YouTube or in the owner's guide.

You may need to replace the metal retaining clips that hold the coin battery. If they lose tension it could prevent your coin battery from being properly seated and cause your remote to malfunction.

In rare instances it is possible that the fob will become desync'd with your vehicle due to software issues or hardware issues. This could be a huge issue, but you are able to usually fix it by visiting a local dealer or auto locksmith to have them reprogram your fob for you. In certain instances the software may require reinstallation to your body control modules.

Interference

Interference can also cause the key fob not to receive or transmit an signal. This can happen when the key fob is in proximity to the radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. Other reasons the key fob may not function include a weak connection to the buttons, damage to the internal chip or water damage.

If the key fob suddenly stopped working, in the middle of the night or even after trying everything you can at home to resolve it e.g. replacing batteries, reprogramming or using the spare key fob, you may have a damaged receiver module on your 500. The receiver module, which is located under the dashboard, detects radio frequency signals from your key fob. It converts the signals into electronic commands which are then interpreted by the vehicle.

There's a quick and easy way to reset the 500's in-board system, including the keyfob. Disconnect the battery of 12 volts for about 15 minutes by removing the negative cable first then the positive cable. Then, reconnect the battery. This will erase any remaining electric current, and also restart the computer in your car. This can help you get your key fob to function again. If the issue persists, you should seek the advice of an expert technician. They can identify the root of any issues.