Reasons Your Fiat 500 Key Fob Won't Work
A key fob from Fiat 500 makes it simple to open doors and start your car. There are many reasons the key fob might stop working. This could be due to a dead coin battery, damage to the receiver module, issues, and interference.
This listing is for a NEW replacement Fiat Flip Key Remote - like the Ilco brand that needs to be professionally programmed by a local locksmith (click here for Locksmith Search). This remote includes lock, unlock and trunk buttons.
Dead Coin Battery
A dead battery is the main cause of your 500 key fob being inoperative. Modern key fobs only have limited operating range and must be within only a few inches from the vehicle to function. If you're far from your vehicle and you press the key fob button, the car won't respond, and will display an "Key Fob Not Detected" message in the instrument cluster.

If this happens, replace the battery in the coin cell (Part number CR2032) with a fresh one from a reliable brand such as Panasonic, Duracell, or Energizer. You can find them in your local hardware store, or online.
After you've replaced the battery in the coin cell you can test it by standing next to your Fiat 500 and pressing the buttons. The parking lights should light up and the key fob should operate the lock and unlock switches.
If your key fob 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 a variety of ways, ranging from the slightest splash to submerging the fob salt water at the beach. If you suspect that your fob was exposed to water, you can place it in a bag of rice to draw out the moisture. If this doesn't work your fob is likely to need to be reset by a professional locksmith or dealer.
Water Damage
Water damage can happen if you immerse the fob in the ocean or wash it in a washer. Saltwater is especially dangerous to the circuit board of the fob that can cause it to short out and eventually die. Getting the fob wet is not an ideal choice but if you drop it into a cup of water or do not remember to remove it from your pocket before you run the washer and you don't have a chance, don't give in.
First, remove the battery from the fob. Clean the electronic chip with isopropyl ethanol or a similar product and then dry it thoroughly before replacing the battery. Then, test the fob to check if it functions. If the key doesn't function then it might need to be reprogrammed. This is typically done by a professional or dealer auto locksmith.
If the key is newer and has never been programmed to your vehicle it is likely to need to be replaced completely. This is a simple process that can be completed by a professional locksmith for automotive use. The locksmith will need the key cut to match your vehicle's ignition. They'll also need to reprogram the fob to the system of your car. This is a cheap and quick process that could be completed on the same day.
fiat key replacement Issues
Your 500 key fob may be inoperable because it's out of range. The remote usually has an operating range of 30 feet or less, and if it's too far away from your car it won't respond to your commands. It can be solved by moving closer to your vehicle until it begins responding.
If you've replaced your coin battery (commonly known as a "button" or "watch") and your fob still won't work It could be because of an internal circuit board issue. In the majority of cases, reprogramming your fob can resolve the problem. You can find the steps for most vehicles on YouTube or in the owner's manual.
It could be necessary to replace the metal clips that hold the coin batteries in their place. If they lose tension, it could prevent your coin battery from being properly seated and cause your remote to malfunction.
In rare instances, the fob can become out of alignment with your vehicle because of software or hardware problems. This could be a huge problem, but you can often fix this by visiting a local dealer or auto locksmith to have them reprogram your fob. In certain situations they may have to reinstall the software on your body control module, as well.
Interference
Interference can also cause the key fob to be unable to receive or transmit a signal. This can occur when the key fob is in close proximity to a radio transmitter like a cell phone or radar detector. The key fob may not work because of a problem with the buttons water damage or damage to the internal chips.
If your key fob suddenly stopped working, or if you have tried everything at home to fix it (e.g. You could have a malfunctioning 500 receiver module after you've tried replacing the battery, reprogramming it, or using an alternative key fob. The receiver module, which is located under the dashboard, picks up radio frequency signals from your key fob. It converts them to electronic commands that the vehicle interprets.
There is a straightforward method to reset the 500's onboard system including the keyfob. Disconnect the battery for 15 minutes by taking off first the negative cable and then the positive cable. Then reconnect the battery. This will eliminate any remaining electrical charge, and then restart the car's computer. This can help get your key fob to work again. If the problem persists you should speak with an expert technician. They can identify the root of any problems.