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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the fiat doblo key 500 is a great way to unlock the doors and start the car. There are many reasons why the fob may stop working. This could be due to a dead battery or water damage, problems with receiver modules, as well as interference.

This listing is for an NEW replacement fiat 500 keys derby Fiat ducato Key fob Programming Flip Key Remote - like the Ilco brand that needs to be professionally programmed by a local locksmith (click here to search for a Locksmith Search). 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 that isn't working. Modern key fobs have a very limited range of operation, and must be within a few feet of the car to operate. If you are far from your vehicle when you press the key fob button, the car won't respond and will display an "Key Fob Not Detected" message in the instrument cluster.

If this occurs, replace the coin-cell battery (Part Number CR2032) with a new battery of a reliable brand, like Panasonic Duracell or Energizer. You can typically find them at your local hardware store or on the internet.

You can test the battery in the coin-cell by pressing the buttons while standing close to your fiat 500 remote key programming 500. The car should blink its parking lights, and the key fob should operate the lock and unlock buttons.

If the key fob doesn't work after replacing the battery, it might have water damage that stops it from communicating with the receiver module in your car. Water damage can occur through a variety of methods, including an easy splash or submerging your key fob in saltwater at the beach. If you suspect your fob has been exposed to water, try placing it in a dry rice bag to pull the moisture out. If that doesn't work the fob might need to be reprogrammed by an experienced auto locksmith or by the dealer.

Water Damage

Damage to the water supply can occur if you immerse the fob into the ocean or wash it in a washing machine. Saltwater can cause the circuit board to short and eventually cease to function. It's not a good idea to submerge the fob in water but don't give up when you accidentally drop it in water or forget to take it out of your pants pocket.

Take the battery off first. Before replacing the battery clean the electronic chip with isopropyl, or a similar product. Test the fob afterward to check if it's working. If the key does not work, it might need to be reset. This is usually handled by an auto locksmith or dealer.

If the key is a newer model and has never 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 will require the key to be cut to match your vehicle's ignition. The locksmith also needs to reprogram your fob into the car's system. This is a low-cost and quick process that could be completed the same day.

Receiver Module Issues

Your 500 key fob may stop working because it is out of range. The remote has a maximum range of 30 feet, which means if you are too far away from your vehicle, it won't respond to your commands. It can be solved by moving closer to your vehicle until it starts responding.

If your fob does not work after replacing the battery for the coin, also called a "button", "watch" or "button", it may be due to a malfunction on 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 guide.

It's possible that you need to replace the metal clips that keep the coin battery. If they loose tension it can prevent the battery from being seated properly and result in the malfunction of your remote.

In rare cases the fob can become out of sync with your vehicle because of hardware or software issues. This can cause a major trouble, but you could usually resolve this issue by visiting an auto locksmith to reprogram your fob for you. In some cases it is possible that the software will require reinstallation to your body control modules.

Interference

Interference can also cause the key fob to be unable to receive or transmit a signal. This could occur if the key fob is in close proximity to a radio transmitter like a cellphone or radar detector. Other reasons why the key fob might not function could be due to a weak connection to the buttons and internal chip, or water damage.

If the key fob has suddenly stopped working, out of the blue, or after trying everything you can at home to resolve it e.g. You may have a faulty 500 receiver module if you've tried replacing the battery, reprogramming or using a spare key fob. The receiver module is located under the dash, and it picks up the radio frequency signals from the key fob. It transforms the signals into electronic commands, which are then processed by the vehicle.

Luckily, there is an easy way to reset all of the onboard systems in your 500 device, including the key fob. Disconnect the battery for 15 minutes by taking off first the negative cable, then the positive cable. Reconnect the battery. This will clear out any remaining electricity and restart the car's computer system, which can help you the key fob to function again. If the problem persists you should speak with an expert technician. They can identify the root cause of your issues.