Reasons Your Fiat 500 Key Fob Won't Work

A key fob for the Fiat 500 is a handy way to open the doors and begin the car. There are a myriad of reasons the fob won't work. This includes a dead coin-battery and water damage, as well as problems with receiver modules, as well as interference.

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Dead Coin Battery

The most frequent reason why your 500 key fob will not function is due to an inactive battery. Modern key fobs operate with a limited operating range and must be within just a few feet of 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 be able to respond, and will display an "Key Fob Not Detected" message in the instrument cluster.

If this occurs you need to replace the battery of your coin-cell (Part Number CR2032) by a fresh one of a trusted brand such as Panasonic Duracell or Energizer. They are usually available at your local hardware store, or online.

After you've replaced the battery of your coin cell It is possible to test it by standing close to your fiat replacement key cost 500 and pressing the buttons. The car will blink its parking lights and the key fob should operate the lock and unlock buttons.

If the key fob doesn't function after replacing the battery, it could have water damage that prevents it from connecting to the receiver module in your car. Water damage can happen in many ways, including an easy splash or submerging the key fob in saltwater at the beach. If you suspect that your fob has been exposed to water, try putting it in a dry rice bag to pull the moisture out. If that doesn't work, your fob will probably need to be reset by a professional auto locksmith or dealer.

Water Damage

Water damage can occur if you submerge the fob in the ocean, or wash it in a washer. Saltwater is especially dangerous to the fob's circuit board that can cause it to short out and eventually die. It's not a good idea to let the fob get wet however, don't give it up when you accidentally drop it in water or forget to take it out of your pocket.

First take the battery off the fob. Before replacing the battery clean the electronic chip with isopropyl or another similar product. Test the fob next to check if it's functioning. If the key isn't working it could need to be changed. This is usually done 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. This is a simple process which can be accomplished by a professional locksmith for automotive use. The locksmith will need the key cut to match your vehicle's ignition. They will also need to reprogram the fob in your vehicle's system. This is an affordable and fast process that can be completed the same day.

Receiver Module Issues

One of the most common reasons your 500 key fob may stop working is because it's out of range. The remote typically has an operating range of 30 feet or less and if it's far from your car, it won't respond to your commands. This can be easily fixed by moving it closer to your vehicle until it begins responding.

If you've replaced the battery in your coin (commonly called a "button" or "watch") and your fob doesn't function It could be because of an internal circuit board problem. In most cases, reprogramming the fob will resolve this issue. You can find the instructions on how to do this for all vehicles by searching YouTube or consulting the owner's manual.

It is possible to replace the metal retaining clips that keep the battery of your coin in place. If they lose tension it can stop your coin battery from sitting properly, causing your remote to malfunction.

In rare cases, the fob may become disconnected from your vehicle due to software problems or hardware issues. This could be a huge problem, but you can usually resolve this issue by visiting an auto locksmith to have them reprogram your fob for you. In some cases 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 transmit or receive an signal due to interference. This can occur when the keyfob is in close proximity to a radio transmitter such as a cell phone or radar detector. Other reasons why the key fob could not function could be due to a weak connection to the buttons or the internal chip or water damage.

If the key fob has been unable to function for a while 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 defective receiver module on your 500. The receiver module, located under the dashboard, detects radio frequency signals from your key fob. It converts them into electronic commands that the vehicle interprets.

Luckily, there is an easy method to reset all on-board systems in your 500 keys, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable and then the positive cable. Then reconnect the battery. This will erase any remaining electric current, and also restart the car's computer. This could help you get your key fob to function again. If the problem persists you should speak with an expert certified technician. They will be able to determine the exact cause of your problem.