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How to Replace a Dead Mazda 5 Key FobThere are plenty of great features that come with your Mazda 5 key fob. Certain of them boost safety or performance while others make driving in East Stroudsburg Brodheadsville and Saylorsville more efficient.One of these handy features is the remote start system. If you’re having difficulty getting your car started, it might be time to change the battery in your key fob.What is a key fob?A key fob is a remote control that allows you unlock and start your car without having to insert a key made of metal into the ignition. It is a small device with a microchip where information such as a unique ID is stored as well as an antenna to send and receiving signals. The microchip communicates using radio frequencies with the receiver inside your vehicle. These signals are a type of near-field communications (NFC), which also allows for contactless payments and other features that require proximity.Depending on the key fob’s design, it will have different capabilities. Certain systems, like keep track of who was in the building and when. This is useful in preventing theft. There are additional security measures that can be added, for instance, encrypted keys that make it impossible to copy them. Prox cards are extremely popular for fobs and are also referred to as 125khz, 26-bit, or proximity cards.Always have an extra car key fob in case the original one is stolen or lost. It’s cost-effective and convenient to program a second keyfob for yourself. But it’s important to be aware that the process may vary by manufacturer and is not always simple. It may take some research to find the proper instructions and steps, but it’s well worth it for a more reliable key fob that can help you reach your destination safely.How do you open a keyfobIt’s a pain to discover that your Mazda key fob won’t unlock. A malfunctioning key fob can cause chaos when you’re getting ready for work or returning home after having a fun day at EAA Airventure.Fortunately, replacing the battery in your key fob is easy and can be done at home using just few tools. Holiday Mazda’s service department has created this guide to assist you in opening the keyfob, and then replace the batteries.Press the auxiliary button located on the backside of your key fob to take off the auxiliary metal. After removing the auxiliary key, you will see an opening on either side of the case. Using the flathead screwdriver wrapped with tape, gently open the case. It should be able to break off without damaging the rubber ring underneath the battery.Now that the battery is exposed then take the old battery out and place it in a safe place somewhere you won’t forget about it. Set the new battery in its original position, ensuring that the positive (+ side) of the battery faces up. Close the case when the new battery is installed, making sure that both sides snap into place. You’re now ready to use your Mazda key fob once more!What is the battery for the key fob?Most key fobs use small, coin-shaped batteries known as button cells. These batteries are available in many places such as general stores, home improvement centres, and auto parts stores. It is important to find the correct battery size for your key fob as various sizes of batteries have different discharge characteristics, which could impact how well your key fob works.You can usually tell if the battery in your key fob is dead by pressing the buttons and observing the LED light. If the light doesn’t come on, it is a sign that the battery is dying and needs to be replaced. You can also use a voltmeter to the battery to test its voltage. how to open a mazda 2 key fob charged key fob should display approximately 3 Volts. If the battery is lower than 3 Volts, it needs to be replaced.The first step in replacing the battery is to open your key fob, and then locate the notch that splits it into two halves. You can use a screwdriver, a knife or your finger to push into this notch and wedge the halves apart. After the halves are separated, unscrew the screw that is holding the key fob on the back. Store the screw in an accessible area such as a resealable cup or bag to avoid losing it.How to replace a key fob’s battery?A key fob is attached to the key ring and 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 an electronic signal to the car, which allows it to do this, however that signal is powered by battery power. If the battery fails and the car is not able to function, your Mazda won’t be able to perform any action and that could be a major disappointment. It’s easy to replace the battery that powers the key fob.The first step to opening the key fob is to insert the tip of the screwdriver in the seam where the halves snap. There is usually a notch along the seam, which makes tearing the two halves apart a lot more simple.After opening the case, gently pull the key blade to release the old battery. Push the new CR2025 into the case, making sure that the plus side is up. Once the new battery is installed place, put the black cover piece back on and slide the key blade into place.This is a fast and simple process which can be carried out at home in Springfield but the steps will differ based on the year of your vehicle and the key fob design. If you have any questions or concerns, the team at Eich Mazda is here to help!