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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 is a great way to open the doors and begin the car. There are a myriad of reasons why the fob may stop working. This includes a dead coin-battery or water damage, problems with the receiver modules, and interference.

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

Dead Coin Battery

The most frequent reason why the 500 key fob won't work is the battery is dead. Modern key fobs offer an operating range that is limited and must be within a few inches of the vehicle to function. If you are far from your vehicle when you press the key fob button, the car will not respond, and will display an "Key Fob Not Detected" message in the instrument cluster.

If this happens then replace the battery for your coin-cell (Part Number CR2032) by a brand new one of a reliable brand, such as Panasonic Duracell or Energizer. You can typically find them in your local hardware store, or online.

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

If the key fob doesn't function after replacing the battery, it could have water damage that stops it from connecting to the receiver module inside your car. Water damage can happen in a number of ways, from small splashes to submerging your fob in salt water at the beach. If you suspect that your fob has been exposed to water, you can place it in a bag of rice to draw out the moisture. If this doesn't work the fob might need to be reprogrammed by a professional auto locksmith or by the dealer.

Water Damage

The fob does have rubber seals that keep water from the chip's electronic circuit it, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater is especially dangerous to the circuit board of the fob which causes it to short out and eventually die. The fob getting wet is not a good idea, but if you drop it in a cup of water or don't remember to take it out of your pants pocket prior to running the washer, don't give up hope.

First remove the battery from the fob. Before replacing the battery clean the electronic chip using isopropyl or similar products. Next check the fob to test if it works. If the fob doesn't work, it may need to be reprogrammed. This is typically handled by a professional or dealer auto locksmith.

If the key is newer and has never been programmed to your vehicle, it will likely need to be replaced completely. A professional locksmith for automotive can do this job. The locksmith will require the key to be cut to match the car's ignition. They will also need to program the fob into the car's system. This is a cost-effective and fast process that can be completed within the same day.

Receiver Module Issues

One of the main reasons your 500 key fob may stop working is that it's simply out of range. The remote has a range of 30 feet, so should you be too far from your car it won't respond to your commands. This can easily be resolved by moving closer to your vehicle until it starts responding.

If you've replaced the battery in your coin (commonly known as"button" or "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 issue. There are instructions on how to do this for most automobiles by searching YouTube or consulting the owner's manual.

It may be necessary to replace the clips made of metal that hold the coin batteries in their place. If they lose tension it can prevent your coin battery from being properly seated and cause your remote to malfunction.

In rare cases the fob could be out of alignment with your vehicle because of hardware or software problems. This could cause a significant trouble, but you could usually resolve this issue by visiting an auto locksmith to have them reprogram your fob for you. In certain instances, the software may also require reinstallation in your body control modules.

Interference

In addition to a dead battery on a coin, the key fob may not be able to receive or transmit signals due to interference. This could happen when the keyfob is located in close proximity to a radio transmitter like a cellphone or Fiat car key radar detector. The key fob may not function 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 resolve it (e.g. replacing the battery, reprogramming, and using the spare key fob, you may have a faulty receiver module on your 500. The receiver module is situated under the dash, and it picks up the radio frequency signals from the key fob. It transforms the signals into electronic commands which are then interpreted by the vehicle.

Fortunately, there's an easy method to reset all of the on-board systems in your 500, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable and then the positive cable. Then, reconnect the battery. This will remove any remaining electricity, and restart the car's computer. This could help you get your key fob working again. If the issue persists it is recommended that you consult an expert technician. They can identify the root of any issues.