Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the fiat doblo Key programming 500 is a convenient way to open the doors and start the car. However, there are numerous reasons why the key fob might stop functioning. This could be due to a dead coin battery or damage to the receiver module, issues, or interference.

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Dead Coin Battery

The most frequent reason that your 500 key fob doesn't work is a dead battery. Modern key fobs offer a limited range of operation and must be within only a few inches from the vehicle to work. If you are further away from your car and hit the keyfob, it won't respond and display the message "Key Fob Not Detected".

If this occurs, replace the coin-cell battery (Part Number CR2032) by a new one from a reputable brand such as Panasonic Duracell or Energizer. You can usually find them in your local hardware store or on the internet.

After you've replaced the battery of your coin cell you can test it by standing in front of your Fiat 500 and pressing the buttons. The parking lights should blink and the key fob should operate the lock and unlock switch.

If your key fob isn't working even after replacing the battery, there may be water damage which hinders it from interacting with the module inside your vehicle. Water damage can happen in many ways, such as a simple splash or submerging the key fob into saltwater at the beach. If you suspect that your fob was exposed to water, try placing it in a dry rice bag to draw the moisture back out. If this doesn't work, you will need to have the fob reprogrammed either by an auto locksmith or dealer.

Water Damage

Although the fob is equipped with rubber seals that keep water from the chip's electronic circuit, submerging it in the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to short, and eventually fail. In the event that you let your fob get wet, it's not an option but if you accidentally drop it in a cup of water or fail to remove it from your pants pocket before running the washing machine and you don't have a chance, don't give in.

Take the battery off first. Before replacing the battery clean the electronic chip with isopropyl, or a similar product. Test the fob afterward to check if it's working. If the fob doesn't work, it might need to be reset. This is typically handled by a dealer or professional auto locksmith.

If the key you have is older and is not programmed for your vehicle, you will need to replace it completely. A professional locksmith for cars can complete this simple process. The locksmith will have to cut the key to match the ignition on your vehicle. They'll also have to reprogram the fob in your car's system. This is a cost-effective and fast process that can be completed the same day.

Receiver Module Issues

Your 500 key fob may not function because it's out of range. The remote's range is of 30 feet. Therefore, in the event that you are far away 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 your fob does not work after replacing the battery for the coin, also known as a "button", "watch" or "button" it could be a problem with the internal circuit board. Reprogramming the fob usually resolves the issue. You can find the procedure for most vehicles on YouTube or in the owner's manual.

You may have to replace the metal retaining clips that keep the coin battery in place. If they lose tension it may prevent your battery from sitting properly and cause your remote to malfunction.

In rare cases it is possible that the fob will become desync'd with your vehicle due to software problems or hardware issues. You can fix this problem by visiting your local dealer or auto-locksmith to reprogram your key fob. In some cases they might need to reinstall the program in your body control module, as well.

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 may happen if the key fob is in close proximity to a radio transmitter like a cell phone or radar detector. Other reasons why the key fob might not work include a weak connection to the buttons and internal chip, or water damage.

If your key fob suddenly stopped working, or if you have tried everything at home to solve the issue (e.g. It could be a defective 500 receiver module if you've tried replacing the battery, reprogramming or using a spare key fob. The receiver module is situated under the dash and receives the radio frequency signals from the key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy way to reset all of the onboard systems in your 500 and google.com include the key fob. Disconnect the battery for 15 minutes, removing first the negative cable and then the positive cable. Then reconnect the battery. This will eliminate any remaining electric current, and also restart the car's computer. This will help you get your key fob working again. If the issue continues, you should seek the advice of an expert technician. They'll be able diagnose the exact cause of your issues.