Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a convenient way to unlock the doors and get started the car. There are many reasons why the key fob might stop working. These include a dead coin battery, damage to the receiver module, water issues, or interference.

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Dead Coin Battery

The most common reason your 500 key fob will not function is due to an inactive battery. Key fobs of today have limited operating range and must be within a few inches of your vehicle to work. If you're not close to 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, simply replace the battery on your coin cell (Part number CR2032) with a brand new one from a trusted brand such as Panasonic, Duracell, or Energizer. You can typically find them in your local hardware store, or online.

You can test the coin-cell battery by pressing the buttons while standing near your Fiat 500. The car will flash its parking lights, and the key fob should operate the lock and unlock buttons.

If the fob's remote doesn't function after replacing the battery, it could be damaged by water, which prevents it from communicating with the receiver module inside your vehicle. Water damage can occur in a variety of ways, such as the simple splash or submerging your key fob in saltwater at the beach. If you suspect that your fob has been exposed to water, try putting it in a dry rice bag to pull the moisture out. If this isn't working, you'll need to have the fob changed by an auto locksmith or dealer.

Water Damage

The fob does have rubber seals to keep water out of the chip's electronic circuit, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to short and then fail. It's not a good idea to soak the fob in water, but don't give it up if you accidentally drop it in water or fail to remove it from your pocket.

First, remove the battery from the fob. Clean the electronic chip with isopropyl ethanol or a similar product and dry it thoroughly before replacing the battery. Then check the fob to check if it functions. If the key does not work, it may have to be reprogrammed. This is usually handled by an auto locksmith or dealer.

If the key is more recent and hasn't been programmed to your car it is likely to need to be replaced completely. A professional locksmith in the automotive industry can carry out this simple task. The locksmith will need the key to be cut to match your vehicle's ignition. They'll also need to program the fob into your vehicle's system. This is a quick and cost-effective procedure that is usually completed within the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key for fiat 500 fob might stop functioning is because it's out of range. The remote typically has an area of 30 feet or less, and if it's too far from your vehicle, it won't respond to your commands. This can be fixed by moving it closer to your vehicle until it begins responding.

If your fob isn't working after replacing the battery for the coin, also known as a "button", "watch" or "button" it could be a problem with the circuit board inside. In most cases, reprogramming the fob can resolve the issue. You can find the instructions on how to do this on the majority of vehicles by searching YouTube or reading the owner's manual.

It is sometimes necessary to replace the clips made of metal that hold the coin batteries in place. If they lose tension it may prevent your battery from being properly seated, causing your remote to malfunction.

In rare cases, the fob may become disconnected from your vehicle due to software or hardware issues. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In certain instances, they may need to reinstall the program in your body control module, too.

Interference

In addition to a dead battery on a coin The key fob might not be able to receive or transmit signals due to interference. This could happen if the key fob is close to radio transmitters (cell phones, radar detectors) or another source of electromagnetic radiation. The key fob could not work due to a bad connection with the buttons or water damage, or damage to the internal chips.

If the key fob has failed to work one day without notice or even after trying every option at home to solve it e.g. replacing batteries, reprogramming or using the spare key fob, it could have a defective receiver module on your 500. The receiver module, which is located beneath the dashboard, picks up radio frequency signals from your key fob. It converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy way to reset all of the on-board systems in your 500 keys, including the key fob. Disconnect the battery for 15 minutes, removing first the negative cable and then the positive cable. Reconnect the battery. This will eliminate any remaining electric current, and also restart the computer of your car. This can help get your key fob to work again. If the issue persists, you should seek out an expert technician. They'll be able to diagnose the exact cause of your issues.