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Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a handy way to open the doors and begin the car. There are many reasons why the fob won't work. These include a dead coin battery, damage to the receiver module, issues, and interfering.

This listing is for a NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It must be professionally programmed (click here to search for local locksmiths in the automotive industry). Includes lock, unlock, and trunk buttons.

Dead Coin Battery

The most frequent reason why your 500 key fob will not function is an inactive battery. Modern key fobs only have only a limited range of operation and must be within a few inches of the vehicle in order to work. If you're far from your vehicle when 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, replace the coin-cell battery (Part Number CR2032) by a new one of a reputable brand such as Panasonic Duracell or Energizer. They are usually available at your local hardware store or online.

replacement key for fiat 500 can test the coin-cell battery by pressing the buttons while you are standing close to your Fiat 500. The car will flash its parking lights and the key fob will operate the lock and unlock switches.

If the fob's remote doesn't function after replacing the battery, it could be damaged by water, which prevents it from connecting to the receiver module inside your car. Water damage can occur in a variety of ways, from a light splash to submerging your fob in salt water at the beach. If you suspect that your fob was exposed to water, put it in a bag of rice to draw out the moisture. If this fails, you'll require your fob to be changed by an auto locksmith or dealer.

Water Damage

While the fob comes with rubber seals to keep water out of the electronic chip inside the device, submerging it into the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to short and eventually end up dying. The fob getting wet is not a good idea, but if you drop it in the water in a cup or do not remember to take it out of your pocket before you run the washer do not give up hope.

First remove the battery from the fob. Before replacing the battery clean the electronic chip with isopropyl or similar products. Then, test the fob to verify if it is working. If the fob doesn't work then it might need to be changed. This is usually done by an auto locksmith or dealer.

If the key is a newer model and has not been programmed to your car It is likely that it needs to be replaced completely. This is a simple procedure which can be accomplished by a professional locksmith for automotive use. The locksmith will require the key cut to match your vehicle's ignition. The locksmith also needs to program your fob into the car's system. This is a simple and cost-effective procedure that can be completed in the same day.

Receiver Module Issues

One of the most common reasons why your 500 key fob won't be functioning is because it's out of range. The remote's range is of 30 feet. So if you are too far from your vehicle it won't be able to respond to your commands. It's easy to remedy this by moving your remote closer to your car until it responds.

If you've replaced the battery in your coin (commonly known as a "button" or "watch") and your fob doesn't function, it could have an internal circuit board issue. Reprogramming the fob is usually the solution to this problem. You can find directions on how to do this for the majority of automobiles by searching YouTube or checking out the owner's manual.

It is possible to replace the metal retaining clips that keep the coin battery in place. If they loose tension, it may prevent your battery from sitting properly, causing your remote to malfunction.


In rare instances the fob could be desync'd with your vehicle due to software issues or hardware issues. This can be a major problem, but you can usually fix it by visiting a local dealer or auto locksmith to reprogram your fob for you. In certain instances, the software may also require reinstallation in your body control modules.

Interference

Interference can also cause the key fob to not receive or transmit a signal. This could occur if the key fob is close to radio transmitters (cell phones or radar detectors) or another source of electromagnetic radiation. The key fob may not function because of a problem to the buttons or water damage, or damage to the internal chips.

If your key fob suddenly stopped working, or you've tried everything at home to solve the issue (e.g. battery replacement, reprogramming and using the spare key fob, you may have a malfunctioning receiver module on your 500. The receiver module, which is located beneath the dashboard, is able to pick up radio frequency signals from your key fob. It transforms the signals into electronic commands that are then interpreted by the vehicle.

There is a straightforward method to reset the 500's onboard system including the keyfob. Disconnect the battery 12 volt for about 15 minutes, by taking off the negative cable first then the positive cable. Reconnect the battery. This will clear out any remaining electrical charge and restart the car's computers. This could allow you to get your key fob working again. If the issue persists, you should seek out an expert technician. They can identify the root of any problems.

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