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https://www.thekeylab.co.uk/mazda-car-keys/
How to Add Change and Reprogram a Mazda 3 Spare Key Its a good idea to keep a spare key on hand regardless of whether you lost your keyfob or it has stopped working This article will cover everything you need to be aware of when the process of adding changing and changing your Mazda 3 key fobs A word of warning Some keys require programming by a locksmith professional or dealer whereas others do not Be sure to only use genuine Mazda replacements for your key fob How to Add a Spare Key If youre not lucky enough to receive a spare key from the dealership when you purchase your Mazda 3 or accidentally break your current key but dont worry there is still a way to add another key To accomplish this youll require an inexpensive flathead screwdriver as well as an CR2025 battery thats new Once youve got the tools and are ready to remove the key fob to change the battery First look for the button that allows you to release the key Its located beneath the metal portion Its easy to locate The back cover should slide off when you press the button Next insert the screwdrivers head into the notch or the space on the top of the metal piece and pull it off After the auxiliary key has been removed insert your new or spare key into the slot Set the ignition to ON and wait for around five seconds before turning it to off This will register the new information on the key to the system allowing it to start your vehicle in the future Its important to note that you can only program up to three keys on your Mazda 3 You dont want to use more than two key fobs in order to start your vehicle This is a safety measure designed to prevent unauthorised users like valet drivers from activating your key and thereby launching your vehicle How to Reprogram a Spare Key If you have a spare key its a good idea be aware of how to reprogram it in the event that your original key is stolen or lost This will stop unauthorised people from stealing your car and starting it This will work with any Mazda Youll require two keys that are functioning to begin the reprogramming If you dont own two working keys youll need to bring your vehicle to the dealer to get it done Start by getting into the drivers seat and shutting all doors with the exception of the one that is open Set the ignition to ON and insert the first functioning key After five seconds take the key out and repeat with the second working key After youve completed programming your new key youll have three working keys you can use to start your car in the future Before storing each key make sure that its functioning properly You should think about buying an extra Mazda 3 remote especially when your car is susceptible to problems You can buy one online or in your local auto store Make sure you read reviews before purchasing to ensure you dont buy a key fob which isnt compatible with your vehicle How do you change the battery on a spare key Theres nothing more frustrating than finding that the battery in your key fob has gone out and youre not able to unlock your car Fortunately its easy to replace the battery and save yourself some money at the dealer The first step is to press the auxiliary key button that is located on the back of the key fob This will release the metal key auxiliary and reveal a slot on both sides of the case Press lost mazda 3 key fob into one of these slots and then gently pull the two halves apart After the battery is fully exposed take it out of the case and put it in a spot where youll never forget about it Make sure you have an extra battery in place prior to starting You can purchase them at any store that sells batteries or at a Mazda dealer close to Winter Garden The correct type of battery is crucial to ensure that your keyfob is working correctly Replace the battery cap and then install the new battery Be careful not damage the rubber ring that holds the battery Finally press the two parts of the key fob together until you hear the sound of clicking How do I reset a Keyless Entry System The Mazda 3 key fob is not just a convenience It also serves as a security feature The car will not start if the key is stolen or lost even if youve got an extra key fob This is because the fob that you have to be reset at the dealership in order to work properly This could be a costly and stressful experience Its a good idea to learn how to reset the system yourself To reset the system unplug the battery for around 15 minutes This will eliminate any remaining electricity from the onboard computer Then disconnect both LFECU connector as well as the demand switch connectors Check for continuity between the following terminals To program the new key or spare insert it into the slot and set the ignition to ON Switch off the ignition after about five seconds The information from the key will be added to the vehicles computer and the new fob will be able to start your car in the future You can program up to three fobs but you should only use one at one time This will prevent unauthorised people from stealing your key and getting access to your car You can purchase a replacement keyfob on the internet but it still needs to be cut and programmed by a dealer