Reasons Your fiat 500 key fob programming 500 Key Fob Won't Work

A key fob for the fiat car keys 500 is a great way to open the doors and start the car. There are a myriad of reasons the fob won't work. It could be due to a dead battery water damage, receiver module issues, or interference.

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Dead Coin Battery

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

If this happens, replace the coin cell battery (Part number CR2032) by a new one from a trusted brand such as Panasonic, Duracell, or Energizer. You can find them at the local hardware store or on the internet.

After you've changed the battery on the coin cell, you can test it by standing in front of your Fiat 500 and pressing the buttons. The car will flash its parking lights, and the key fob should work the lock and unlock buttons.

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 inside your car. Water damage can occur in a variety of ways, from small splashes to submerging your fob in salt water at the beach. If you suspect that your fob was exposed to water, place it in a bag of rice to draw out the moisture. If this fails, you'll need to have your fob replaced by an auto locksmith or a dealer.

Water Damage

Water damage can occur when you submerge the fob in the ocean, or wash it in a washing machine. Saltwater poses a particular risk to the fob's circuit board that can cause it to short out and eventually end up dying. It's not a good thing to submerge the fob in water but don't give up even if you accidentally drop the fob in water, or fail to remove it from your pants pocket.

Take the battery off first. Clean the electronic chip with isopropyl ethanol or a similar product and then dry it completely before replacing the battery. Check the fob to check if it's functioning. If the key doesn't function, it may have to be changed. This is typically done by a professional or dealer auto locksmith.

If the key is newer and was not programmed to your vehicle, it will likely need to be replaced completely. A professional automotive locksmith can do this job. The locksmith needs to cut the key to match the ignition of your car. They will also need to reprogram the fob to the car's system. This is a cost-effective and quick procedure that can be completed the same day.

Receiver Module Issues

One of the main reasons why your 500 key fob won't be working is that it's simply out of range. The remote typically has 30 feet of range or less, and if it's too far from your vehicle, it will not respond to your commands. This can easily be resolved by moving it closer to your vehicle until it starts responding.

If your fob isn't working after you replace the battery in the coin, also called a "button", "watch" or "button", it could be due to an issue with the internal circuit board. In the majority of cases, reprogramming your fob will fix the issue. The instructions are available for the majority of vehicles on YouTube or in the owner's manual.

It could be necessary to replace the clips made of metal that hold the coin batteries in the correct position. If they loose tension, it can prevent the coin battery from sitting properly and cause the remote to malfunction.

In rare cases the fob might be out of connection with your vehicle as a result of software or hardware problems. This could cause a significant headache, but you can often fix this by visiting an auto locksmith to reprogram your fob. In some instances, the software may also need to be reinstalled in your body control modules.

Interference

In addition to a dead battery on a coin The key fob might not be able to receive or transmit the signal due to interference. This could happen if the key fob is located near radio transmitters (cell phones, radar detectors) or another source of electromagnetic radiation. The key fob could not work because of a problem 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 resolve it (e.g. battery replacement, reprogramming and using the spare key fob, you could have a malfunctioning receiver module on your 500. The receiver module is located under the dash, and it picks up the radio frequency signals from the key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy method to reset every single system on board in your 500 and include the key fob. Disconnect the 12 volt battery for about 15 minutes, by taking off the negative cable first then the positive cable. Reconnect the battery. This will erase any remaining electricity, and allow you to restart the car's computer. This could help you get your key fob to function again. If the issue continues it is recommended that you consult an expert certified technician. They will be able diagnose the exact cause of any problems.