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https://www.thekeylab.co.uk/mazda-car-keys/

How to Add Change and Reprogram a Mazda 3 Spare Key Whether you dropped your key fob on the ground or it just stopped working its a good idea to have an extra key in your pocket This article will show you how to add modify or reprogramme the Mazda 3 keyfobs A word of caution Certain keys need to be programmed by a locksmith professional or dealer while others do not Make sure you use only authentic Mazda replacements to replace your key fob How do I add a spare key If youre not fortunate enough to get a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one Dont fret theres an option to get another key Youll need an flathead screwdriver and a new CR2025 battery Once youve got these items you can access the key fob and swap the battery First look for the auxiliary key release button Its located under the metal portion and is easy to find spare mazda key on the back should fall off when you press the button Next place the screwdrivers head into the notch or spacing on the top of the metal part and pry it off Insert your spare or new key into the slot after taking out the auxiliary key Set the ignition to ON and wait for five seconds before turning it to OFF This will allow the system to recognize the new key and begin your vehicle in the future It is only possible to program three keys to your Mazda 3 You dont want to have to utilize more than two key fobs in order to start your vehicle This is a safeguard to stop unauthorised users from activating your keys and starting your car How to Reprogram a spare key If you have a spare key its a good idea to be aware of how to reprogram it in the event that your original key is stolen or lost This will prevent unauthorized people from starting your vehicle or stealing it This should work with any Mazda Youll need two keys that are functioning to start the reprogramming process If you dont have two working keys you should take your Mazda to a dealer to get this completed Start by stepping into drivers seat close all the doors except the one that is open Set the ignition to ON and insert the first functioning key After five seconds remove the key Repeat the process with the second key Once youve completed programming your new key you should have three keys that work to start your vehicle in the future Before placing each key in storage make sure its working properly Its a good idea buy a spare Mazda 3 key fob especially if youre someone who often loses your key or has other issues with it You can buy one online or at your local automobile store but make sure to read the reviews before buying so you arent buying a key fob thats not compatible with your vehicle How to change the Battery on a Spare Key Theres nothing worse than finding that the battery in your key fob has died and you cant unlock your vehicle Fortunately its easy to replace the battery and save yourself some money at the dealership Press the auxiliary key button located at the back of the keyfob This will take out the metal auxiliary key and expose slots on both sides of the case The flathead should be inserted into one of these slots and then gently pull the two halves apart When the battery is completely exposed take it out and place it in a safe place somewhere safe from being lost Make sure you have a new battery ready prior to beginning They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden The right type of battery is crucial to ensure that your keyfob works properly Replace the cap on the battery and then replace the battery Be careful not to scratch the small rubber ring the battery sits on Press the two halves together until you can hear the click How do I reset the Keyless Entry System The Mazda 3 key fob is not just a practical feature It also serves as an important security feature The car will not start if the key is lost or stolen even if youve got an extra fob This is because the key fob needs to be reprogrammed by the dealership to function properly It can be a costly and stressful experience so its a good idea to understand how to reset the system yourself To reset the system remove the battery for around 15 minutes This will eliminate any remaining electrical current from the computer on board Next disconnect both the LFECU and demand switch connectors Then check continuity between the following terminals To program a new key or a spare place it in the slot and turn the ignition to ON Leave the key in for around five seconds and then turn it off The keys details are now transferred to the computer of your vehicle and the new fob can start your vehicle You can program up to three fobs but you should only use one at one time This stops unauthorized individuals from copying your key and getting ahold of your car You can purchase a new keyfob on the internet but itll still need to be programmed and cut by a dealer