Reasons Your fiat key fob programming 500 Key Fob Won't Work

A key fob for the Fiat 500 makes it easy to open doors and start your vehicle. However, there are a variety of reasons why the fob won't be functioning. These include a dead battery or water damage, receiver module issues, and interfering.

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Dead Coin Battery

The most frequent reason that your 500 key fob doesn't work is an inactive battery. Key fobs of today have only a limited range of operation and must be within just a few inches of the vehicle in order to function. If you're far away from your vehicle when you press the key fob button, the car won't be able to respond, and will display a "Key Fob Not Detected" message in the instrument cluster.

If this happens, simply replace the battery in the coin cell (Part number CR2032) with a new one from a reputable brand such as Panasonic, Duracell, or Energizer. You can usually find them at your local hardware store, or online.

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

If the fob's remote doesn't work after replacing the battery, it could be damaged by water, which prevents it from connecting to the receiver module inside your vehicle. Water damage can occur in a number of ways, ranging from an accidental splash to submerging the fob salt water at the beach. If you think your fob was exposed to water, place it in a bag of rice to draw out the moisture. If this fails, you'll need to have your fob replaced by an auto locksmith or a dealer.

Water Damage

Water damage can happen if you immerse the fob in the ocean or wash it in a machine. Saltwater can cause the circuit board to short and eventually fail. Getting the fob wet is not a good idea, but if you drop it into a glass of water or do not remember to take it out of your pants pocket before running the washer, don't give up hope.

Remove the battery first. Before replacing the battery clean the electronic chip using isopropyl or a similar product. Next try the fob and verify if it is working. If the key isn't working then it might need to be reprogrammed. This is usually done by an auto locksmith or dealer.

If your key is old and has not been programmed for your car then you'll need to replace it completely. This is an easy process that can be carried out by a professional locksmith for automotive use. The locksmith will have to cut the key to match the ignition in your vehicle. The locksmith will also have to program your fob into the vehicle's system. This is a fast and cost-effective procedure that can be completed the same day.

Receiver Module Issues

One of the most common reasons why your 500 key fob could stop working is because it's out of range. The remote has a range of 30 feet. Therefore, in the event that you are far away from your vehicle it will not respond to your commands. It's easy to solve this issue by moving the remote closer to your car until it responds.

If you've replaced your coin battery (commonly called a "button" or "watch") and spare key for fiat 500 the fob won't work it could be due to an internal circuit board issue. Reprogramming the fob typically resolves the issue. You can find the instructions on how to do this for all vehicles by searching YouTube or checking out the owner's manual.

It is possible to replace the metal clips that hold the coin battery in place. If they lose tension it could prevent the coin battery from sitting properly, and this will cause your remote to malfunction.

In rare instances the fob might become desync'd with your vehicle due to software or hardware issues. This could be a huge trouble, but you could usually fix it by visiting a local dealer or auto locksmith to have them reprogram your fob. In certain instances the software might require reinstallation in your body control modules.

Interference

Interference can also cause the key fob to not receive or transmit signals. This could occur if the keyfob is in close proximity to a radio transmitter like a cell phone or fiat 500 key replacement uk radar detector. Other reasons why the key fob might not work could be due to a weak connection to the buttons or the internal chip or water damage.

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

Luckily, there is an easy method of resetting every single system on board in your 500, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Reconnect the battery. This will get rid of any remaining electrical charge and restart the car's computers. This could allow you to get your key fob working again. If the problem persists you should speak with an expert technician. They can identify the root of any issues.