Reasons Your Fiat 500 Key Fob Won't Work

A fiat 500 key fob is a convenient method to open the doors and begin the car. There are a myriad of reasons the fob may stop working. This could be due to a dead coin-battery or water damage, problems with the receiver modules, and interference.

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Dead Coin Battery

The most common reason your 500 key fob doesn't function is due to the battery is dead. Modern key fobs have a very limited range of operation, and should be within only a few feet from the vehicle 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 an "Key Fob Not Detected" message in the instrument cluster.

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

After you've changed the battery on the coin cell You can test it by standing next to your Fiat 500 and pressing the buttons. The parking lights will flash and the key fob should operate the lock and [Redirect-Java] unlock switches.

If your fob's key isn't working even after replacing the battery, it might be water damage that is preventing it from communicating with the module inside your vehicle. Water damage can happen through a variety of methods, including simply splashing or 64.vaterlines.com submerging the key fob into saltwater at the beach. If you suspect that your fob was exposed to water, you can try placing it in a dry rice bag to pull the moisture out. If this doesn't work your fob is likely to need to be reprogrammed by a professional auto locksmith or by the dealer.

Water Damage

Water damage can happen if you immerse the fob in the ocean, or wash it in a washing machine. Saltwater can cause the circuit board to short and then fail. If you get the fob wet, it's not a good idea, but if you drop it in an empty cup of water, or fail to remove it from your pants pocket prior to running the washing machine do not give up hope.

Take the battery off first. Before replacing the battery clean the electronic chip with isopropyl or another similar product. Next try the fob and check if it functions. If the key does not work, it may need to be reprogrammed. This is usually handled by a professional or dealer auto locksmith.

If the key is older and hasn't been programmed to your car, it will likely need to be replaced completely. This is a straightforward process that can be handled by a professional automotive locksmith. The locksmith will require the key to be cut to match your vehicle's ignition. They'll also need to reprogram the fob to the car's system. This is a cheap and fast process that can be completed within the same day.

Receiver Module Issues

One of the main reasons why your 500 key fob may stop functioning is because it's out of range. The remote typically has a range of 30 feet or less and if it's far from your vehicle, it will not respond to your commands. This can easily be resolved by moving closer to your vehicle until it begins responding.

If your fob does not work after replacing the battery in the coin, also known as a "button", "watch" or "button" It could be due to an issue with the circuit board inside. In most cases, reprogramming the fob will solve the problem. There are instructions on how to program fiat 500 key fob to do this for all vehicles by searching YouTube or consulting the owner's manual.

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

In rare instances, the fob could be out of alignment with your vehicle because due to hardware or software issues. This can be a major trouble, but you could frequently fix this issue by visiting an auto locksmith to have them reprogram your fob. In some instances it may be necessary to install the software again in your body control module too.

Interference

Interference can also cause the key fob to not be able to receive or transmit an signal. This is possible when the key fob is located near an electronic radio transmitter (cell phones, radar detectors) or any other source of electromagnetic radiation. Other reasons the key fob could not function may be a lack of connection to the buttons, damage to the internal chip or water damage.

If your key fob suddenly stopped working, or if you have tried everything at home to resolve it (e.g. battery replacement, reprogramming and using the spare key fob, you could have a malfunctioning receiver module on your 500. The receiver module, which is located beneath the dashboard, picks up radio frequency signals from your key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy method of resetting every single system on board in your 500 keys, including the key fob. Disconnect the battery of 12 volts for about 15 minutes, by removing 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, which could help get your key fob working again. If the problem persists you should seek the advice of an expert technician. They'll be able to determine the root of your issue.