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Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a convenient method to open the doors and start the car. However, there are numerous reasons why the key fob might stop working. This includes a dead battery water damage, problems with the receiver modules, and interference.

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

Dead Coin Battery

The most common reason your 500 key fob doesn't work is an inactive battery. Modern key fobs offer limited operating range and must be within only a few inches from the vehicle in order to function. 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 battery of your coin cell (Part number CR2032) by a new one from a trusted brand such as Panasonic, Duracell, or Energizer. They are usually available in your local hardware store, or online.

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

If your key fob does not work after replacing the battery, there could be water damage that has prevented it from communicating with the module inside your vehicle. Water damage can happen in many ways, such as the simple splash or submerging the key fob into saltwater at the beach. If you think your fob was exposed to water, put it in a bag of rice to draw out the moisture. If that doesn't work, your fob is likely to need to be reset by an experienced auto locksmith or dealer.

Water Damage

Damage to the water supply 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. It's not good to submerge the fob in water, but don't give it up even if you accidentally drop the fob in water, or fail to remove it from your pocket.

Remove the battery first. Clean the electronic chip with isopropyl alcohol or another similar product and dry it completely before replacing the battery. Then, test the fob to verify if it is working. If the key doesn't function, it may need to be reprogrammed. This is usually handled by a professional or dealer auto locksmith.

If your key is older and is not programmed to work with your vehicle, you will need to replace it completely. A professional locksmith in the automotive industry can carry out this simple task. 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 car's system. This is a low-cost and quick procedure that can be completed the same day.

Receiver Module Issues


One of the main reasons why your 500 key fob won't be functioning is that it's out of range. The remote typically has 30 feet of range or less, and if it's too far away from your car it won't respond to your commands. This can be easily fixed by moving it closer to your vehicle until it begins responding.

If your fob isn't working after you replace the battery for the coin, also known as a "button", "watch" or "button" It could be due to a problem with the internal circuit board. Reprogramming the fob is usually the solution to this issue. There are instructions on how to do this for most automobiles by searching YouTube or checking out the owner's manual.

You may have to replace the metal clips that keep the coin battery. If they lose tension, it could prevent your coin battery from being properly seated, causing your remote to malfunction.

In rare instances the fob might become desync'd with your vehicle due to software problems or hardware issues. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In certain instances they may have to reinstall the software in your body control module too.

Interference

In addition to a dead battery on a coin, the key fob may not be able to receive or transmit a signal due to interference. This can occur when the key fob is in close proximity to a radio transmitter like a cell phone or radar detector. Other reasons the key fob could not function include a poor connection to the buttons and internal chip or water damage.

If the key fob has stopped working one day suddenly and you've tried everything you can do at home to solve it e.g. battery replacement, reprogramming and using the spare key fob, it could have a malfunctioning receiver module on your 500. The receiver module, located under the dashboard, is able to pick up radio frequency signals from your key fob. It transforms the signals into electronic commands, which are then translated by the vehicle.

There is a simple way to reset the 500's in-board system including the keyfob. Disconnect the battery 12 volt for about 15 minutes, by removing the negative cable and then the positive cable. Then reconnect the battery. This will get rid of any remaining electricity and then restart the car's computer system, which could help the key fob to function again. If the issue persists you should seek out an expert technician. They will be able to identify the exact cause of any problems.

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