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How to Replace a Dead Mazda 5 Key Fob Your Mazda 5 key fob has a number of great features. Certain of them boost performance or safety while others make driving in East Stroudsburg Brodheadsville and Saylorsville more efficient. One of these useful features is the remote start system. If you are having trouble starting your car it might be time to replace the battery on your keyfob. What is a keyfob? Key fobs are remote control that allows you to unlock and start your vehicle without having to insert a key of metal in the ignition. It is a lightweight, small device that contains a microchip that stores information, such as an unique ID as well as an antenna to transmit and receive signals. The microchip communicates via radio frequencies with the receiver in your vehicle. These signals are part of near-field communication (NFC) which allow for contactless payments, and other features requiring proximity. Based on the type of key fob that you have the system will have different features. Some systems, for example keep track of who entered the building and when. This can be very useful in preventing crime. Security measures can also be included, like encrypted keys which make it more difficult to copy. Prox cards are an extremely popular fob design and are commonly called 125khz cards, 26-bit proxy, or proximity fobs. It's recommended to have an extra key fob in your vehicle in case one is lost or stolen. Many automakers allow you to program another key fob, which is convenient and cost-effective. But it's important to keep in mind that the procedure may differ from manufacturer to manufacturer and isn't always straightforward. It may take some digging to locate the right instructions and steps, but it's worth it to get a reliable key fob that helps you get to your destination in safety. How do I open a key fob It's frustrating to discover that your Mazda key fob won't unlock. If you're preparing for your day at work or returning from an adventure-filled afternoon at EAA Airventure, a dead key fob's battery can affect your plans. It's simple to replace the batteries on your key fob at home using a few simple tools. The service team at Holiday Mazda has put together this useful guide on how to open a key fob and replace the battery. To start, push the auxiliary key button on the back of your key fob to take off the auxiliary key made of metal. Once the key is removed, you should see two slots on the opposite side of the case. The case should be opened using a tape-wrapped screwdriver. It should be able to come apart without damaging the rubber ring beneath which the battery rests. Once the battery has been removed, take it off and place it somewhere you'll never forget. Then, place the new battery in its place ensuring that the positive (+) side of the battery is facing up. Once the new battery is in place, close up the case and ensure that both sides snap into the correct position. Now you're ready to use your Mazda key fob again! What's the battery for the key fob? Button cells are the most well-known type of battery that is used in key fobs. These batteries can be found in many places, including general stores, home improvement centers, and auto parts stores. It is important to get the right size battery for your key fob as various sizes of batteries have different discharge characteristics, which may influence how well your key fob functions. mazda 2 key battery replacement can usually tell if the battery in your key fob has died by pressing the buttons and watching the LED light. If the light does not come on, the battery is dead. It needs to be replaced. You can also test the battery's voltage with a voltmeter to see what voltage it is operating at. A fully charged key fob battery should read about 3 Volts. If the battery reads less than 3 Volts, it should be replaced. To replace the battery, first open the key fob. Find the notch which divides the two halves. You can use a screwdriver, a knife or your fingers to push into this notch to wedge the two halves apart. Once the halves have been separated, take off the screw that is holding the key fob at the back. Keep the screw in a safe location such as a resealable container or bag to avoid losing it. How to replace the battery in the key fob Key fobs attach 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 hidden uses). The fob sends wireless signals to the car that permits it to do this, however that signals run on battery power. If the battery fails and the car is not able to function, your Mazda won't be able to perform any function which can be a huge disappointment. Fortunately, it's quite easy to replace the battery on the form of a key fob. The first step for opening the key fob is to insert the tip of the screwdriver into the area where the halves snap. There is often a notch along the seam, which makes tearing the two halves apart a lot easier. After opening the case, gently pull on the key blade to release the battery. Place the new CR2025 in 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 then slide the key blade into position. This is a simple and simple process that can be done at your home in Springfield The steps will differ based on your model year and key fob style. If you have any questions or concerns, the team at Eich Mazda is here to help!