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24-Hours To Improve Fiat Panda Key Fob Replacement
Reasons Your Fiat 500 Key Fob Won't Work

A key fob for Fiat 500 makes it simple to open doors and start your vehicle. There are a myriad of reasons the fob could stop working. This could be due to 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 - similar to the Ilco brand that must be professionally programmed by a local automotive locksmith (click here for Locksmith Search). Includes lock, unlock, and trunk buttons.

Dead Coin Battery


The most frequent reason that the 500 key fob won't work is the battery is dead. Modern key fobs only have only a limited range of operation and must be within only a few inches from the vehicle in order to function. If you're not close to your vehicle, and you press the key fob button, the car won't respond, and will display a "Key Fob Not Detected" message in the instrument cluster.

If this happens, simply replace the battery in the coin cell (Part number CR2032) with a brand new one from a reliable brand like Panasonic, Duracell, or Energizer. They are typically available in your local hardware store, or online.

After you've replaced the battery of your coin cell, you can test it by standing near your Fiat 500 and pressing the buttons. G28 Car Keys parking lights should light up and the key fob will operate the lock and unlock switches.

If the key fob doesn't function after replacing the battery, it could be damaged by water that blocks it from communicating with the receiver module in your vehicle. Water damage can happen in a variety of ways, such as an easy splash or submerging the key fob in saltwater at the beach. If you suspect that your fob was exposed to water, you can try placing it in a dry rice bag to pull the moisture back out. If this isn't working, you'll need to have the fob changed by an auto locksmith or dealer.

Water Damage

Damage to the water supply can occur if you immerse the fob in the ocean, or wash it in a washing machine. Saltwater can cause the circuit board to short and eventually cease to function. If you get the fob wet, it's not an option but if you accidentally drop it into a glass of water or do not remember to remove it from your pants pocket before running the washer do not give up hope.

First take the battery off the fob. Before replacing the battery clean the electronic chip with isopropyl or another similar product. Then test the fob to verify if it is working. If the key still doesn't work, it might need to be reprogrammed. This is usually done by an auto locksmith or dealer.

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 locksmith for cars can do this job. The locksmith will need to cut the key to match the ignition of your vehicle. The locksmith will also need to reprogram your fob into the vehicle's system. This is a quick and affordable process which can be completed the same day.

Receiver Module Issues

One of the simplest reasons your 500 key fob may stop functioning is because it's out of range. The remote has a range of 30 feet. Therefore, in the event that you are far from your vehicle, it won't respond to your commands. This can be easily fixed by moving it closer to your vehicle until it begins responding.

If your fob does not work after you replace the battery inside the coin, which is also known as a "button", "watch" or "button", it could be due to a problem with the internal circuit board. Reprogramming the fob is usually the solution to this issue. The instructions are available for the majority of vehicles on YouTube or in the owner's guide.

It could be necessary to replace the metal clips that hold the coin batteries in place. If they loose tension, it could hinder the battery from being properly seated, and this will result in the malfunction of your remote.

In rare cases it is possible that the fob will become desync'd with your vehicle due to software issues or hardware issues. This could be a huge issue, but you are able to frequently fix this issue by visiting a local dealer or auto locksmith to reprogram your fob for you. In some instances, the software may also require reinstallation in your body control modules.

Interference

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

If the key fob has failed to work one day without notice or after trying everything you can at home to solve it e.g. battery replacement, reprogramming and using the spare key fob, you could have a faulty receiver module on your 500. The receiver module is situated under the dash and receives the radio frequency signals from the key fob. It converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy method to reset all of the onboard systems in your 500 device, including the key fob. Disconnect the 12 volt battery for about 15 minutes by taking off the negative cable first then the positive cable. Then reconnect the battery. This will eliminate any remaining electrical charge and restart the car's computer system, which could help the key fob to function again. If the issue persists, you should speak with an expert technician. They will be able diagnose the exact cause of problems.