Reasons Your Fiat 500 Key Fob Won't Work

A key fob for Fiat 500 makes it simple to open doors and start your car. However, there are many reasons why the fob won't be working. This could be due to a dead coin battery, damage to the receiver module, issues, or interference.

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Dead Coin Battery

The most frequent reason why the 500 key fob won't function is an inactive battery. Modern key fobs have a limited range of operation and must be within a few inches of your vehicle to work. If you are further away from your vehicle and fiat Spare key hit the keyfob, it won't respond and display the message "Key Fob Not Detected".

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

After you've replaced the battery in the coin cell you can test it by standing near your fiat key fobs spare key (slattery-cross.Technetbloggers.de) 500 and pressing the buttons. The car will flash its parking lights and the key fob should be able to operate the lock and unlock buttons.

If the key fob doesn't work after replacing the battery, it may be damaged by water that blocks it from communicating with the receiver module in your vehicle. Water damage can occur in many ways, such as an easy splash or submerging the key fob into saltwater at the beach. If you suspect your fob has been exposed to water, try placing it in a dry rice bag to pull the moisture out. If this isn't working, you'll need to have the fob reprogrammed either by an auto locksmith or dealer.

Water Damage

While the fob comes with rubber seals to keep water from the electronic chip inside it, submerging it in the ocean or washing it in a machine can cause water damage. Saltwater poses a particular risk to the circuit board of the fob, causing it to short out and eventually die. It's not a good thing to let the fob get wet, but don't give it up in the event that you accidentally drop it in the water or don't remove it from your pants pocket.

First take the battery off the fob. Before replacing the battery clean the electronic chip using isopropyl or similar products. Next, test the fob to test if it works. If the key still doesn't work, it may have to be reprogrammed. This is usually handled by a dealer or professional auto locksmith.

If the key is older and has never been programmed to your vehicle it is likely to need to be replaced completely. A professional locksmith in the automotive industry can do this job. The locksmith will need the key to be cut to match your car's ignition. The locksmith will also have to program your fob into the vehicle's system. This is a cheap and fast process that can be completed in the same day.

Receiver Module Issues

Your 500 key fob may not function because it's out of range. The remote has a maximum range of 30 feet. So should you be too far away from your vehicle, it won't respond to your commands. It's easy to remedy this by moving your remote closer to your car until it responds.

If your fob doesn't work after you replace the battery inside the coin, which is also called a "button", "watch" or "button" it may be due to a malfunction on the circuit board inside. Reprogramming the fob usually resolves the issue. You can find the instructions for the majority of vehicles on YouTube or in the owner's manual.

It's possible that you need to replace the metal retaining clips that keep the battery of your coin in place. If they lose tension it could hinder the coin battery from sitting properly and can cause the remote to malfunction.

In rare instances, the fob might be out of the vehicle's sync because due to hardware or software issues. It is possible to fix this issue by visiting your local dealer or auto-locksmith to reprogram your key fob. In some cases it is possible that the software will require reinstallation into your body control modules.

Interference

Interference can also cause the key fob to be unable to receive or transmit signals. This could occur if the keyfob's location is in close proximity to a radio transmitter, such as a cell phone or radar detector. The key fob could not work because of a weak connection to 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 solve the issue (e.g. replacing the battery, reprogramming it and using the spare key fob, you might have a faulty receiver module on your 500. The receiver module is located under the dash and is able to pick up the radio frequency signals from the key fob. It converts the signals into electronic commands which are then interpreted by the vehicle.

Fortunately, there's an easy method of resetting all of the on-board systems in your 500, including the key fob. Disconnect the battery for 15 minutes by taking off first the negative cable and then the positive cable. Reconnect the battery. This will eliminate any remaining electrical charge, and then restart the car's computer. This can help get your key fob working again. If the problem persists you should seek out an expert technician. They can determine the exact cause of your problems.