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How to Replace a Dead Mazda 5 Key FobYour Mazda 5 key fob is equipped with numerous excellent features. Certain of them boost performance or safety while others make driving in East Stroudsburg Brodheadsville and Saylorsville more comfortable.Remote start is among the most convenient features. If you're having trouble starting your vehicle it may be time to replace the battery on your key fob.What is a keyfob?A key fob can be used as remote control that allows you to unlock and start your car without the need to insert a metallic ignition key. It's a small device that has a microchip on which information such as an unique ID is stored as well as an antenna that can be used for sending and receiving signals. The microchip communicates via radio frequencies with the receiver in your vehicle. These signals are a type of near-field communication (NFC) which allow for contactless payment, as well as other features that require proximity.Depending on the key fob's type, it will have different capabilities. For example, some systems will keep a log of who used the key and when, which can be significant in stopping crimes. Security measures can also be included by using encrypted keys, which make it more difficult to copy. Prox cards are very popular as fobs and are also known as 125khz, 26-bit or proximity cards.It's wise to have an extra key fob in your vehicle in the event that one is stolen or lost. Many automakers let you program another key fob, which is convenient and cost-effective. It is important to note that the procedure varies between manufacturers and might not be easy. You may need to do some research to find proper instructions and steps. However, it is worth it to have a reliable key fob to ensure you get to your destination safely.How do you open a key fobNothing is more frustrating than hitting the unlock button on your Mazda key fob and discovering that it doesn't work. A dead key fob can ruin your plans, whether you're getting ready for work or returning home from an an exciting afternoon at EAA Airventure.Fortunately, changing the battery of your key fob is easy and can be done at home using just a few tools. The Service team at Holiday Mazda has put together this guide to help you to open a key fob and replace the battery.Press the auxiliary button on the back of your key fob to remove the auxiliary piece of metal. After you have removed the key, you will find an opening on either side of the case. The case should be opened using a tape-wrapped screwdriver. It should break easily without damaging the rubber ring that the battery rests on.Once the battery has been exposed, remove it and put it away somewhere that you will not forget it. Then, put the new battery in its place ensuring that the positive (+) side of the battery is facing upwards. Close the case once the new battery has been installed, making sure that both sides snap into place. You're now ready to use your Mazda key fob once more!What's the battery used in a key fob?Button cells are the most commonly used type of battery that is used in key fobs. They are readily available at general stores, home improvement centers, and some auto part stores. It is essential to select the correct size of battery for your keyfob. Different battery sizes have different discharge characteristics, which can influence the way your keyfob works.Most of the time you can determine the battery of your fob is dead by pressing any button on it and then looking at the light source that is lit by the LED. If the LED light does not start to blink, it means that the battery is dead and has to be replaced. You can also check the battery with a voltmeter to determine the voltage it is running at. A fully charged key fob battery should be reading around 3 Volts. If the battery shows less than 3 Volts, it is considered to be low and should be replaced.The first step to replace the battery is to open your key fob, and then locate the notch that divides it into two halves. You can use your finger or a screwdriver, or a knife to push the two halves. After the two halves have been separated, remove the screw that is holding the key fob on the back. Make sure to keep the screw in a safe location, such as a resealable bag or cup, to avoid losing it.How do you replace a key fob batteryA key fob attaches to the key ring, and it has buttons that can be used to lock or unlock your car and even remotely start it (one of their many nefarious uses). The fob transmits a wireless signal that allows the car to do this. However the signals are powered by battery power. Your Mazda will be unable to perform any action should the battery fail. This can be a huge inconvenience. Fortunately, it's pretty easy to replace the battery with the form of a key fob.The first step to opening the key fob is to insert the screwdriver's tip into the area where the halves snap together. The seam is usually with a notch, which makes it easier to pull the two halves apart.Once you've opened the case, remove the old battery by gently pulling on the key blade until it triggers a tab and is pulled out of the way. Insert the new CR2025 into the case, making sure that the positive side is facing up. After the new battery is installed, replace the black cover piece and slide the blade in place.mazda key fob replacement is a quick and simple process that can be accomplished at home in Springfield, though the steps will differ depending on the year of your vehicle and the key fob model. If you have any questions we can help you. Eich Mazda is always here to help!