Reasons Your fiat scudo key 500 Key Fob Won't Work

A Fiat 500 key fob makes it easy to open doors and start your vehicle. However, there are numerous reasons the fob could stop functioning. This could be due to a dead coin-battery or water damage, problems with the receiver modules, and interference.

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Dead Coin Battery

The most common reason the 500 key fob won't function is the battery is dead. Modern key fobs operate with a limited range of operation, and should be within some feet of the vehicle to function. If you're not close to 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 battery on your coin cell (Part number CR2032) with a fresh one from a reputable brand like Panasonic, Duracell, or Energizer. You can typically find them in your local hardware store or on the internet.

You can test the battery of your coin-cell by pressing the buttons while you're standing close to your Fiat 500. The parking lights will flash and the key fob should operate the lock and unlock switches.

If your key fob still isn't working after replacing the battery, there may be water damage which has prevented it from communicating with the module inside your vehicle. Water damage can happen in a number of ways, from a light splash to submerging the fob salt water at the beach. If you suspect that your fob was exposed to water, put it in a dry rice bag to pull the moisture out. If this doesn't work the fob might require reprogramming by an experienced auto locksmith or 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 circuit board of the fob and can cause it to short out and eventually die. Getting the fob wet is not an option but if you accidentally drop it in an empty cup of water, or fail to take it out of your pocket before you run the washing machine, don't give up hope.

First take the battery off the fob. Before replacing the battery clean the electronic chip using isopropyl or a similar product. Next check the fob to verify if it is working. If the key does not function, it may have to be reset. This is usually handled by an auto locksmith or dealer.

If the key is older and hasn't been programmed to your vehicle It will most likely need to be replaced completely. A professional locksmith for cars can complete this simple process. The locksmith will need the key to be cut to match your vehicle's ignition. They will also need to reprogram the fob to your vehicle's system. This is a simple and cost-effective procedure that can usually be completed the same day.

Receiver Module Issues

One of the simplest reasons why your 500 key fob might stop working is that it's simply out of range. The remote has a range of 30 feet. Therefore, if you are too far from your car it won't respond to your commands. This can be fixed by moving closer to your vehicle until it begins responding.

If your fob does not work after replacing the coin battery, also known as a "button", "watch" or "button" It could be due to an issue with the internal circuit board. In most cases, reprogramming the fob will resolve this issue. You can find the steps for the majority of vehicles on YouTube or in the owner's guide.

You may have to replace the metal retaining clips that keep the coin battery. If they become loose, it can stop your coin battery from being properly seated, causing your remote to malfunction.

In rare cases the fob can become out of alignment with your vehicle because of hardware or software issues. This can be a major headache, but you can usually resolve this issue by visiting an auto locksmith to have them reprogram your fob. In certain situations they might need to reinstall the software on your body control module too.

Interference

In addition to a dead coin battery The key fob might not be able to receive or transmit a signal due to interference. This could happen if the key fob is near radio transmitters (cell phones or radar detectors) or any other source of electromagnetic radiation. Other reasons the key fob could not function include a weak connection to the buttons, damage to the internal chip or water damage.

If your key fob suddenly stopped working, or you've tried everything at home to fix it (e.g. replacing the battery, 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 is able to pick up the radio frequency signals from the key fob. It transforms the signals into electronic commands, which are then read by the vehicle.

Fortunately, there's an easy method of resetting all on-board systems in your 500 keys, including the key fob. Disconnect the battery of 12 volts for about 15 minutes by removing the negative cable first then the positive cable. Reconnect the battery. This will eliminate any remaining electricity and then restart the car's computers. This can help you the key fob to function again. If the issue continues, you should speak with an expert technician. They'll be able identify the root cause of your problem.