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Reasons Your fiat keys 500 Key Fob Won't Work

A key fob for the Fiat 500 is a convenient method to open the doors and start the car. However, there are a variety of reasons why the key fob might stop functioning. This includes a dead battery water damage, problems with receiver modules, as well as interference.

This listing is for an NEW replacement Fiat remote key Flip Key Remote that appears similar to the Ilco brand. It needs to be professionally programmed (click here to find local locksmiths for your vehicle). It comes with trunk, lock and unlock buttons.

Dead Coin Battery

A dead battery is the most common cause of your 500 key fob that isn't working. Modern key fobs only have a limited range of operation and must be within a few inches of the vehicle to work. If you're far from your car and push the keyfob button it will not respond and display the message "Key Fob Not Detected".

If this happens you need to replace the battery of your coin-cell (Part Number CR2032) by a brand new one of a reliable brand, like Panasonic Duracell or Energizer. You can usually 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 close to your Fiat 500 and pressing the buttons. The parking lights should light up and the key fob will operate the lock and unlock switch.

If the fob's key doesn't work after replacing the battery, it may have water damage that prevents it from connecting to the receiver module in your vehicle. Water damage can happen in a variety of ways, ranging from small splashes to submerging the fob into salt water at the beach. If you suspect your fob has been exposed to water, put it in a dry rice bag to pull the moisture back out. If this doesn't work your fob is likely to need to be reset by an experienced locksmith or dealer.

Water Damage

Although the fob is equipped with rubber seals to keep water from the electronic chip inside and out of the ocean or washing it in a machine could cause water damage. Saltwater can cause the circuit board to short and eventually die. It's not a good idea to soak the fob in water however, but don't give it up if you accidentally drop it in water, or fiat remote key fail to take it out of your pants pocket.

First take the battery off the fob. Clean the electronic chip with isopropyl or a similar product and then dry it completely before replacing the battery. Check the fob to see if it is working. If the key still doesn't work, it may have to be reset. This is usually done by a dealer or professional auto locksmith.

If your key is a bit older and is not programmed for your vehicle it is necessary to replace it completely. A professional locksmith in the automotive industry will be able to complete this process. The locksmith will require the key to be cut to match the car's ignition. They'll also need to reprogram the fob in the system of your car. This is a cost-effective and quick process that could be completed in the same day.

Receiver Module Issues

One of the simplest reasons your 500 key fob might stop working is that it's simply out of range. The remote usually 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. This can be fixed by moving it closer to your vehicle until it begins responding.

If you've replaced your coin battery (commonly called a "button" or "watch") and your fob doesn't function, it could have an internal circuit board issue. In most cases, reprogramming the fob will fix the issue. The instructions are available for the majority of vehicles on YouTube or in the owner's manual.

It's possible that you need to replace the metal clips that hold the battery of your coin in place. If they become loose, it may prevent your battery from sitting properly, causing your remote to malfunction.

In rare instances the fob could be disconnected from your vehicle due to software or hardware issues. This could cause a significant trouble, but you could frequently fix this issue by visiting an auto locksmith to reprogram your fob. In certain instances the software may require reinstallation to your body control modules.

Interference

Interference can also cause the key fob to not be able to receive or transmit an signal. This may happen if the keyfob is in close proximity to a radio transmitter, such as a cell phone or radar detector. The key fob may not function because of a weak connection with the buttons or water damage, or damage to the internal chips.

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

There's a quick and easy way to reset the 500's in-board system, including the keyfob. Disconnect the 12 volt battery for approximately 15 minutes by removing the negative cable first then the positive cable. Then reconnect the battery. This will remove any remaining electricity and restart the car's computer system, Fiat Remote key which can help you get your key fob working again. If the issue persists it is recommended that you consult an experienced technician. They will be able diagnose the root cause of any problems.