Reasons Your Fiat 500 Key Fob Won't Work

A key fob from Fiat 500 allows you to easily open doors and start your vehicle. However, there are numerous reasons the fob could stop functioning. This includes a dead battery and water damage, as well as issues with the receiver module, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It has to be professionally programmed (click here to search for local 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 working. Modern key fobs offer only a limited range of operation and must be within just a few inches of the vehicle to work. If you're far from your vehicle and you push the keyfob button it will not respond, and display the message "Key Fob Not Detected".

If this happens, replace the battery on your coin cell (Part number CR2032) by a new one from a reputable brand like Panasonic, Duracell, or Energizer. You can usually find them in your local hardware store or on the internet.


After you've replaced the coin cell battery It is possible to test it by standing in front of your Fiat 500 and pressing the buttons. The parking lights should flash and the key fob should operate the lock and unlock switch.

If your key fob still isn't working after replacing the battery, there could be water damage that is preventing it from connecting to the module in your vehicle. Water damage can happen in a number of ways, ranging from the slightest splash to submerging your fob in salt water at the beach. If you suspect your fob has been exposed to water, you can try placing it in a dry rice bag to draw the moisture out. If this fails, you'll need to have the fob reset by an auto locksmith or a dealer.

Water Damage

Water damage can occur when you submerge the fob in the ocean or wash it in a machine. Saltwater can be particularly harmful to the circuit board of the fob which causes it to short out and eventually die. It's not the best idea to soak the fob in water however, but don't give it up when you accidentally drop it in the water or don't remove it from your pocket.

Remove the battery first. Before replacing the battery clean the electronic chip using isopropyl or another similar product. Then try www.thekeylab.co.uk and verify if it is working. If the key doesn't work, it might need to be changed. This is usually done by an auto locksmith or dealer.

If the key is a newer model and hasn't been programmed to your car It will most likely need to be replaced completely. This is a simple procedure which can be accomplished by a professional locksmith for automotive use. The locksmith will need the key to be cut to match your car's ignition. They'll also need to program the fob into your car's system. This is a cheap and quick process that could be completed the same day.

Receiver Module Issues

One of the main reasons why your 500 key fob could stop functioning is that it's out of range. The remote has a range of 30 feet, which means if you are too far from your vehicle it will not respond to your commands. You can fix this by moving the remote closer to your car until it responds.

If you've replaced the coin battery (commonly known as a "button" or "watch") and your fob doesn't function, it could have an internal circuit board issue. In the majority of cases, reprogramming your fob will fix the problem. There are instructions on how to do this on the majority of automobiles by searching YouTube or consulting the owner's manual.

It is sometimes necessary to replace the metal clips that hold the coin batteries in the correct position. If they lose tension it could hinder the battery from sitting properly and cause your remote to malfunction.

In rare instances, 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 frequently fix this issue by visiting an auto locksmith to reprogram your fob for you. In certain instances it may be necessary to install the software again in your body control module too.

Interference

In addition to a dead battery on a coin The key fob may not be receiving or transmitting signals due to interference. This is possible when the key fob is in proximity to an electronic radio transmitter (cell phones, radar detectors) or another source of electromagnetic radiation. Other reasons why the key fob could not function could be due to a weak connection to the buttons or damage to the internal chip or water damage.

If the key fob failed to work one day without notice or after trying everything you can at home to fix it e.g. replacing the battery, reprogramming, and using the spare key fob, you could have a defective receiver module on your 500. The receiver module, located under the dashboard, receives radio frequency signals from your key fob. It converts them into electronic commands that the vehicle interprets.

There is a simple way to reset the 500's internal system including the keyfob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then, reconnect the battery. This will eliminate any remaining electricity, and restart the computer in your car. This can help get your key fob working again. If the issue continues you should seek out an experienced technician. They will be able diagnose the exact cause of issues.