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11 Ways To Completely Sabotage Your Fiat Panda Key Fob Replacement
Reasons Your Fiat 500 Key Fob Won't Work

A key fob with the fiat 500 number is a convenient way to unlock the doors and get started the car. There are a myriad of reasons the fob won't work. This includes a dead coin-battery and water damage, as well as problems with the receiver modules, and interference.

This listing is for an NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It must be professionally programmed (click here to find local automotive locksmiths). It comes with lock, unlock and trunk buttons.

Dead Coin Battery

The most frequent reason why the 500 key fob won't function is a dead battery. Modern key fobs have a very limited range of operation, and should be within only a few feet from the vehicle to operate. If you're far from your vehicle when you press the key fob button, the car won't be able to respond, and will display the "Key Fob Not Detected" message in the instrument cluster.

If this happens, replace the battery in the coin cell (Part number CR2032) with a new one from a reputable manufacturer such as Panasonic, Duracell, or Energizer. They can be found in your local hardware store, or online.

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

If the fob's remote doesn't function after replacing the battery, it might have water damage that stops it from connecting to the receiver module inside your vehicle. Water damage can happen in a variety of ways, ranging from the slightest 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 bag of rice to draw out the moisture. If this does not work, you'll require your fob to be replaced 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 can cause water damage. Saltwater can cause the circuit board to short and then end up dying. The fob getting wet is not a good idea but if you drop it in the water in a cup or do not remember to remove it from your pants pocket prior to running the washing machine and you don't have a chance, don't give in.

First remove the battery from the fob. Before replacing the battery clean the electronic chip using isopropyl or a similar product. Check the fob to see if it is functioning. If the fob doesn't function, it may need to be programmed again. This is usually done by a dealer or professional auto locksmith.

If the key is a newer model and was not programmed to your car it is likely to need to be replaced completely. A professional automotive locksmith can complete this simple process. The locksmith must cut the key to match the ignition in your vehicle. The locksmith will also need to reprogram your fob into the vehicle's system. This is an affordable and quick procedure that can be completed the same day.

Receiver Module Issues

Your 500 key fob might be inoperable because it's out of range. The remote usually has an operating range of 30 feet or less and if it's far from your vehicle, it will not respond to your commands. This can be easily fixed by moving it closer to your vehicle until it begins responding.

If your fob won't work after replacing the coin battery, also called a "button", "watch" or "button", it may be due to a malfunction on the internal circuit board. Reprogramming the fob typically resolves the issue. G28 Car Keys can find instructions on how to do this for all automobiles by searching YouTube or checking out the owner's manual.

It could be necessary to replace the clips made of metal that hold the coin batteries in place. If they become loose, it can stop your coin battery from sitting properly, causing your remote to malfunction.


In rare instances it is possible that the fob will become disconnected from your vehicle because of software 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 may need to reinstall the program in your body control module too.

Interference

Interference can also cause the key fob not to receive or transmit a signal. This may happen if the keyfob's location is in close proximity to a radio transmitter, such as a cell phone or radar detector. The key fob may not work due to a poor connection with the buttons or water damage, or damage to the internal chips.

If the key fob has suddenly stopped working, without notice or even after trying every option at home to solve it e.g. It could be a defective 500 receiver module in the event that you've tried replacing the battery, reprogramming, and using a spare key fob. The receiver module, located beneath the dashboard, is able to pick up radio frequency signals from your key fob. It transforms the signals into electronic commands which are then interpreted by the vehicle.

Luckily, there is an easy way to reset all of the onboard systems in your 500, including the key fob. Disconnect the battery for 15 minutes, removing first the negative cable, then the positive cable. Then, reconnect the battery. This will remove any remaining electricity, and allow you to restart the computer in your car. This can help you get your key fob working again. If the issue persists you should seek out an expert certified technician. They'll be able to diagnose the exact cause of your issue.