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 many reasons the fob may stop working. It could be due to a dead battery, water damage, receiver module issues, or interference.

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Dead Coin Battery

The most frequent reason why your 500 key fob won't work is an inactive battery. Modern key fobs operate with a restricted operating range, and should be within some feet of the car to operate. If you're not close to your vehicle when you press the key fob button, the car won't respond, and will display an "Key Fob Not Detected" message in the instrument cluster.

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

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

If the key fob doesn't work after replacing the battery, it could be damaged by water, which prevents it from communicating with the receiver module in your vehicle. Water damage can happen in a number of ways, ranging from a light splash to submerging the fob into salt water at the beach. If you suspect that your fob has been exposed to water, you can place it in a rice bag to draw out the moisture. If that doesn't work, your fob will probably need to be reset by a professional auto locksmith or by the dealer.

Water Damage

While the fob comes with rubber seals to keep water out of the chip's electronic circuit and out of the ocean or Fiat Van Keys washing it in a machine could cause water damage. Saltwater is particularly dangerous to the circuit board of the fob, causing it to short out and eventually die. It's not the best idea to get the fob wet however, don't give it up even if you accidentally drop the fob in the water or don't remove it from your pants pocket.

First take the battery off the fob. Clean the electronic chip with isopropyl alcohol or a similar product and then dry it completely before replacing the battery. Check the fob to check if it's working. If the fob doesn't work, it may need to be reprogrammed. This is typically done by a dealer or professional auto locksmith.

If the key is newer and has never been programmed to your vehicle It will most likely need to be replaced completely. A professional locksmith for automotive can complete this simple process. The locksmith must cut the key to match the ignition on your vehicle. They will also need to reprogram the fob to your car's system. This is a fast and inexpensive process that can be completed on the same day.

Receiver Module Issues

Your 500 key fob might be inoperable because it's out of range. The remote typically has an operating range of 30 feet or less, and if it's too far away from your car it won't respond to your commands. You can easily remedy this by moving your remote closer to your vehicle until it responds.

If you've replaced the coin battery (commonly called"button" or "button" or "watch") and your fob still won't work it could be due to an internal circuit board problem. Reprogramming the fob typically resolves this issue. The instructions are available for most vehicles on YouTube or in the owner's manual.

It is possible to replace the metal clips that keep the coin battery in place. If they lose tension, they could stop the coin battery from sitting properly and could result in the malfunction of your remote.

In rare cases the fob could be out of the vehicle's sync because due to hardware or software issues. This can be a major issue, but you are able to frequently fix this issue by visiting an auto locksmith to reprogram your fob for you. In some cases it is possible that the software will require reinstallation to 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 an signal due to interference. This can occur when the key fob is in close proximity to a radio transmitter like a cellphone or radar detector. Other reasons why the key fob might not work include a poor connection to the buttons or the internal chip, or water damage.

If the key fob has suddenly stopped working, suddenly, or after trying everything you can at home to resolve it e.g. replacing batteries, reprogramming or using the spare key fob, it could have a malfunctioning receiver module on your 500. The receiver module, located under the dashboard, detects radio frequency signals from your key fob. It then converts them into electronic commands that the vehicle interprets.

Luckily, there is an easy method of resetting every single system on board in your 500 device, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable and then the positive cable. Reconnect the battery. This will erase any remaining electricity, and restart the computer of your car. This will help you get your key fob to function again. If the problem persists you should seek the advice of an expert technician. They will be able to identify the root cause of any issues.