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Reasons Your Fiat 500 Key Fob Won't Work

A Fiat 500 key fob makes it easy to open doors and start your car. However, there are many reasons why the fob won't be working. These include a dead battery or water damage, receiver module problems, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote - like the Ilco brand that must be professionally programmed by a local automotive locksmith (click here for Locksmith Search). Includes lock, unlock, and trunk buttons.

Dead Coin Battery

The most common reason your 500 key fob won't function is due to an inactive battery. Modern key fobs have limited operating range and must be within just a few inches of the vehicle to work. If you are further away from your vehicle and push the keyfob button it won't respond and display the message "Key Fob Not Detected".

If this happens, replace the coin-cell battery (Part Number CR2032) by a brand new one from a reputable brand such as Panasonic Duracell or Energizer. They can be found in the local hardware store or online.

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

If your fob's key doesn't work even after replacing the battery, there may be water damage that prevents it from communicating with the module in your vehicle. Water damage can happen in many ways, including an easy 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 rice bag to draw out the moisture. If that doesn't work, the fob might need to be reprogrammed by a professional auto locksmith or dealer.

Look At This can occur if you immerse the fob in the ocean, or wash it in a machine. Saltwater can be particularly harmful to the circuit board of the fob, causing it to short out and eventually die. Getting the fob wet is not an ideal choice however, if you drop it into a cup of water or forget to remove it from your pants pocket before running the washing machine, don't give up hope.

Take the battery off first. Clean the electronic chip with isopropyl or a similar product and dry it thoroughly before replacing the battery. Next test the fob to see if it works. If the key still doesn't function, it may need to be changed. This is typically done by a professional or dealer auto locksmith.

If the key is more recent and has never been programmed to your vehicle It will most likely need to be replaced completely. This is a simple process that can be handled by a professional locksmith for automotive use. The locksmith will need to cut the key to match the ignition of your car. They'll also need to reprogram the fob to the car's system. This is a quick and inexpensive process that can usually be completed the same day.

Receiver Module Issues

The 500 key fob could stop working because it is out of range. The remote usually has 30 feet of range or less, and if it's too far from your vehicle, it won't respond to your commands. It's easy to remedy this by moving your remote closer to your vehicle until it responds.

If your fob does not work after replacing the battery in the coin, also called a "button", "watch" or "button", it could be a problem with the internal circuit board. Reprogramming the fob is usually the solution to this issue. You can find the steps for most vehicles on YouTube or in the owner's guide.

You may have to replace the metal retaining clips that keep the coin battery in place. If they loose tension it could hinder the coin battery from being properly seated and can result in the malfunction of your remote.

In rare instances, the fob may become desync'd with your vehicle because of software or hardware issues. This can be a major issue, but you are able to often fix this by visiting an auto locksmith to have them reprogram your fob for you. In some cases it is possible that the software will need to be reinstalled in your body control modules.

Interference

In addition to a dead battery on a coin The key fob might not be able to transmit or receive an signal due to interference. This can occur when the key fob is in close proximity to a radio transmitter such as a cell phone or radar detector. The key fob might not work due to a bad connection with the buttons or water damage, or damage to the internal chips.





If your key fob suddenly stopped working, or if you've tried everything at home to solve the issue (e.g. replacing the battery, reprogramming it and using the spare key fob, you might have a malfunctioning receiver module on your 500. The receiver module, which is located under the dashboard, detects radio frequency signals from your key fob. It converts them into electronic commands that the vehicle interprets.

Luckily, there is an easy way to reset all on-board systems in your 500 device, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable and then the positive cable. Then reconnect the battery. This will clear out any remaining electrical charge and restart the car's computer system, which could help get your key fob working again. If the issue continues, you should consult an expert technician. They will be able to determine the root of any issues.