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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the fiat red key 500 allows you to easily open doors and start your vehicle. However, there are numerous reasons why the fob may stop functioning. This could be due to a dead coin battery, water damage, receiver module issues, and interference.

This listing is for a NEW replacement fiat Key case replacement (imoodle.win) Flip Key Remote that is similar to the Ilco brand. It has to be professionally programmed (click here to find local locksmiths for your vehicle). This remote includes lock, unlock and trunk buttons.

Dead Coin Battery

A dead battery is probably the most common reason for your 500 key fob not functioning. Modern key fobs have a very limited operating range and should be within just a few feet of the vehicle to operate. If you are far from your vehicle, and you hit the keyfob, it will not 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 fresh one from a reputable brand like Panasonic Duracell or Energizer. You can find them in your local hardware store or online.

You can test the battery on your coin-cell by pressing the buttons while you are standing close to your Fiat 500. The parking lights should light up and the key fob should operate the lock and unlock switch.

If your key fob still isn't working after replacing the battery, it may be water damage that has prevented it from interacting with the module inside your vehicle. Water damage can occur in a variety of ways, such as the simple splash or submerging the key fob into saltwater at the beach. If you suspect that your fob has been exposed to water, put it in a bag of rice to draw out the moisture. If this fails, you'll need to have your fob reprogrammed either by an auto locksmith or a dealer.

Water Damage

While the fob has some rubber seals that keep water out of the electronic chip inside it, 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. It's not a good thing to submerge the fob in water however, don't give it up when you accidentally drop it in water or fail to take it out of your pocket.

First remove the battery from the fob. Before replacing the battery, clean the electronic chip using isopropyl or a similar product. Next try the fob and test if it works. If the key does not function then it might need to be reset. This is usually done by a dealer or professional auto locksmith.

If the key is a newer model and hasn't been programmed to your vehicle, it will likely need to be replaced completely. A professional automotive locksmith will be able to complete this process. The locksmith must cut the key to match the ignition of your vehicle. The locksmith will also have to reprogram your fob into the car's system. This is a cheap 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 usually has a range of 30 feet or less and if it's far away from your car key cover fiat 500 it will not respond to your commands. This can be fixed by moving it closer to your vehicle until it begins responding.

If you've replaced the battery on your coin (commonly called a "button" or "watch") and the fob isn't working, it could have an internal circuit board issue. In the majority of cases, reprogramming your fob can resolve the problem. You can find directions on how to do this for all automobiles by searching YouTube or reading the owner's manual.

It may be necessary to replace the clips made of metal that hold the coin batteries in place. If they loose tension, they could stop the battery from sitting properly and could cause the remote to malfunction.

In rare cases, the fob may become desync'd with your vehicle due to software or hardware issues. You can fix this issue by visiting your local auto-locksmith or dealer to reprogram fiat 500 key fob your key fob. In some cases the software may require reinstallation in your body control modules.

Interference

In addition to a dead battery on a coin the key fob could not be receiving or transmitting the signal due to interference. This could happen if the key fob is near the radio transmitter (cell phones or radar detectors) or another source of electromagnetic radiation. The key fob could not function because of a weak connection to the buttons water damage or damage to the internal chips.

If your key fob suddenly stopped working, or you've tried everything at home to fix it (e.g. It could be a defective 500 receiver module If you've tried replacing it with a battery, reprogramming or using an alternative key fob. The receiver module, which is located beneath the dashboard, detects radio frequency signals from your key fob. It transforms the signals into electronic commands, which are then translated by the vehicle.

There's a simple method to reset the 500's internal system including the keyfob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then, reconnect the battery. This will clear any residual electrical charge, and then restart the car's computer. This can help get your key fob working again. If the issue persists, you should consult an expert technician. They'll be able diagnose the exact cause of your problem.