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How to Replace a Dead Mazda 5 Key Fob There are a lot of wonderful features included with your Mazda 5 key fob. Certain of them enhance the performance or safety of your vehicle, whereas others allow you to travel around East Stroudsburg, Brodheadsville, and Saylorsville more enjoyable. One of these useful features is the remote start system. If you're having difficulty starting your car it could be time to replace the battery on your keyfob. What is a key fob? A key fob is a remote control that lets you open and start your vehicle without having to insert a key made of metal in the ignition. It is a small, light device that has a microchip which stores information like an identification number and an antenna to send and receive signals. The microchip communicates using radio frequencies with the receiver in your vehicle. These signals are a form of near-field communication (NFC) which permits contactless payments and other features that require proximity. Depending on the type of key fob you own It will come with various features. For instance, certain systems will keep a log of who used the key and when, which can be hugely beneficial in preventing crime. There are also security measures that could be added, like encrypted keys that make it more difficult to copy them. Prox cards are a popular type of fob and are also known as 125khz, 26-bit or proximity cards. It's a good idea to have a spare key fob for your vehicle in case one gets stolen or lost. A lot of automakers permit you to self-program another key fob, which can be convenient and cost-effective. But it's important to keep in mind that the process can vary by manufacturer and is not always easy. You may have to do some research to find proper instructions and steps. However, it's worth having a trusted key fob in order to help you reach your destination safely. How do you open a keyfob It's a pain to discover that your Mazda key fob doesn't work. A malfunctioning key fob can cause chaos whether you're getting ready to go to work or returning home after the excitement of an afternoon at EAA Airventure. It's simple to replace the batteries of your key fob at home using a few simple tools. Holiday Mazda's customer service team has developed this guide to help you open the keyfob and replace batteries. To start, push the key button that is located on the back of your key fob in order to remove the auxiliary metal key. Once the key has been removed, you should see two slots on the opposite side of the case. Gently pry mazda key fob replacement by using a tape-wrapped screwdriver. It should come apart easily without damaging the rubber ring underneath which the battery sits. Now that the battery is exposed and the old one is removed, take it out and set it aside in a place where you will not forget it. The new battery should be placed in its original position, ensuring that the positive (+ side) of the battery is facing upwards. Close the case after the new battery is installed, making sure that both sides snap into place. Now you're ready to use your Mazda key fob again! What's the battery in the key fob? The majority of key fobs are powered by small, coin-shaped batteries known as button cells. These batteries are easily available in general stores, home improvement stores, and certain auto parts stores. It is essential to select the correct size battery for your keyfob. Different battery sizes have different discharge characteristics that can affect the way your keyfob functions. Most of the time you can determine whether the fob battery is dead by pressing any buttons on it and then looking at the LED light that is illuminated. If the LED light does not come on it means the battery is dead. It's time to get it replaced. You can also use a voltmeter on the battery to test its voltage. A fully charged key fob should display approximately 3 Volts. If the battery is less than 3 Volts, it needs to be replaced. The first step to replace the battery is to open the key fob of your device and locate the notch that divides it into two halves. You can use a screwdriver a knife, or your finger to push into the hole and push the two halves apart. Once the halves have been separated, remove the screw that is holding the key fob on the back. Make sure you keep the screw in a safe place, like a resealable bag or cup, to avoid losing it. How to replace a key fob battery A key fob attaches to the key ring and features 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, these signals are powered by batteries. Your Mazda will not be able to perform any action when the battery is dead. This could be a major inconvenience. It's easy to replace the battery that powers the key fob. The first step to opening the key fob is to insert the screwdriver's tip into the area where the two halves snap together. There is usually an opening in this seam which makes pulling the two halves apart a lot more simple. After opening the case, gently pull the key blade to let go of the old battery. Push the new CR2025 battery into place, making sure that the plus side is facing upwards. Once the new battery is installed replace the black cover piece and slide the blade into position. This is a quick and simple process that can be done at home in Springfield, though the steps will differ depending on your model year and key fob design. If you have any questions or concerns, the team at Eich Mazda is always there to help!