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How to Replace a Dead Mazda 5 Key Fob Your Mazda 5 key fob is equipped with several amazing features. Some of them improve the safety or performance of your vehicle, while others make driving around East Stroudsburg, Brodheadsville, and Saylorsville more enjoyable. One of these useful features is the remote start system. If you're experiencing difficulty starting your vehicle it could be time to replace the battery on your key fob. What is an important key fob? Key fobs are remote control that allows you open and start your vehicle without having to insert a metal key in the ignition. It is a small, lightweight device with a microchip. It stores information, such as an identification number and an antenna to send and receive signals. The microchip communicates via radio frequencies with the receiver inside your vehicle. These signals are a form of near-field communications (NFC) which allow for contactless payments, and other features requiring proximity. Depending on the key fob's type it will come with different capabilities. Certain systems, like, keep a record of who entered the building and when. This is useful in preventing crime. There are other security measures that can be added, such as keys that are encrypted, making it impossible to copy them. Prox cards are a well-known fob design and are commonly called 125khz cards, 26-bit prox or proximity fobs. It is always advisable to have a spare car key fob in the event that your original is lost or stolen. Many automakers let you self-program a third key fob which can be convenient and cost-effective. However, it's important to remember that the process can vary according to the manufacturer and isn't always straightforward. You may have to do some research to find correct instructions and steps. But, it's important to have an authentic key fob to ensure you get to your destination in a safe manner. How to open a key fob It's a hassle to discover that your Mazda key fob won't unlock. A lost key fob could make your life miserable whether you're getting ready for work or coming home after an the excitement of an afternoon at EAA Airventure. Fortunately, changing the battery on your key fob is easy and can be done at home, using only a few tools. The Service team at Holiday Mazda has put together this helpful guide on how to open the key fob and replace the battery. To begin, press the accessory key button on the back of your key fob to remove the metal auxiliary key. After you have removed the key, you will find the slots on both sides of the case. Using a tape-wrapped flathead screwdriver, gently pry open the case. It should fall apart easily without damaging the rubber ring under the battery. Once the battery has been exposed remove the old one out and put it away in a location where you'll not forget about it. Place the new battery into its original position, making sure that the positive (+ side) of the battery faces upwards. Close the case after the new battery is installed, ensuring that both sides snap into place. Then you can use your Mazda keyfob once more. What's the battery inside the key fob? Button cells are the most commonly used type of battery used in key fobs. These batteries are available in many places like general stores, home improvement centers, and auto parts stores. It is important to find the correct battery size for your key fob since the different sizes of batteries have varying discharge characteristics that can impact how well your key fob operates. You can generally tell if the battery in the key fob is depleted by pressing the buttons and watching the LED light. If the light is not turning on it means the battery is dead. It's time to get it replaced. mazda rx8 key fob can also test the battery using a voltmeter to see what voltage it is running at. A fully charged key fob battery should show around 3 Volts. If the battery shows less than this, it is at a low level and should be replaced. To replace the battery, first unlock your key fob. Find the notch that separates the two halves. You can use a screwdriver, an ax, or your fingers to push into the notch and wedge the halves apart. Once the halves are separated, remove the screw that is holding the key fob in the back. Save the screw in a convenient area such as a resealable cup or bag to avoid losing it. How do you replace the battery in the key fob A key fob is attached to the key ring. 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 sends wireless signals to the car that allows it to do this, but the signals are powered by battery power. Your Mazda will be unable to do anything when the battery is dead. This can be a nightmare. It's easy to replace the battery that powers the key fob. The first step is to open the key fob by pressing the screwdriver's tip into the gap where the two halves snap together. There is usually an opening in this seam which makes pulling the two halves apart much simpler. After opening the case, gently pull on the key blade to release the old battery. The new CR2025 should be inserted into the case, making sure the plus side is up. Once the new battery has been installed take off the black cover piece and slide the blade into place. This is a fast and easy process that can be accomplished at home in Springfield but the steps will differ based upon your model year and key fob design. The staff at Eich is always there to assist you with any questions you have.