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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 always to have an extra key at hand regardless of whether you lost your keyfob or it has stopped working This article will go over everything you must learn about changing adding and changing the programming of your Mazda 3 key fobs mazda key fobs of caution Certain keys require programming by a locksmith professional or dealer whereas others do not Make sure to use genuine Mazda replacements for your key fob How do you add a spare key You can also add an additional key in case you dont have a spare key or when you accidentally damage your current one Youll need the flathead screwdriver as well as the CR2025 replacement battery Once youve got the tools and tools youre ready to open the key fob Locate the key release auxiliary Its located on the underside of the metal piece and is easy to locate Once you hit the button the back cover will fall off instantly Then insert the head of the screwdriver into the notch or the space at the top of the metal part and pull it off Once the auxiliary key is removed insert the new or spare key into the slot Set the ignition to ON and wait for about five seconds before turning it to OFF This will add the new keys details to the system and allow it to start your vehicle in the future It is important to remember that you can only program up to three keys for your Mazda 3 The one thing you dont want is to have more than two functioning key fobs and not be capable of getting your vehicle started This is a safeguard to prevent unauthorized users from activating your keys and then starting your car How to Reprogram a Spare Key If you have a spare key its important to know how to reprogram it in case the original key you had is lost or stolen This will stop unauthorised people from abusing your vehicle and restarting it This will work with any Mazda You will require two keys that are functioning to begin the reprogramming process If you dont own two working keys youll have to take your vehicle to the dealership to get it done Start by stepping into drivers position and closing all the doors except the one that is open Turn the ignition on and then insert the first working key Wait five seconds before removing the key Repeat with the second key After programming your new key you should have 3 keys that be able to start your vehicle in the future Before you store each key make sure that its working correctly Its a good idea to buy an extra Mazda 3 key fob especially if youre someone who often loses your key or has other issues with it You can purchase one on the internet or at your local auto store Make sure to look up reviews before you purchase to ensure you dont buy an item that isnt compatible with your vehicle How do I change the battery with a spare key Its very frustrating to discover that your key fob has failed and youre in a position to not unlock your vehicle Its a good thing that its simple to replace the battery and save some money at the dealer The first step is to press the auxiliary key button located on the back of the key fob This will release the metal key auxiliary and reveal two slots on the sides of the case Press the flathead into one of these slots and gently pry the two halves of the case apart Once the battery has been fully exposed take it out of the case and place it somewhere you will not forget it Before you begin be sure that you have a brand new replacement battery You can purchase them at any store that sells batteries or at an Mazda dealer close to Winter Garden The correct type of battery is crucial to ensure that your keyfob is working properly Replace the battery cap and then put in the new battery Be careful not to scratch the rubber ring that holds the battery Then press the two halves of the key fob together until you hear the sound of a click How do you reset the Keyless Entry System The key fob inside your Mazda 3 is not only a convenience its also an important security feature If you lose your key or had it stolen the car wont start even if you have the spare fob This is because the fob that you have to be reprogrammed by the dealership to work again This can be a painful and costly ordeal Therefore its recommended to know how to reset the system Remove the battery from the system for 15 minutes This will eliminate any residual electric current from the onboard computer Then disconnect both the connectors for the LFECU and the demand switch connectors Check for continuity between the terminals Put the key in the slot and switch on the ignition Stop the ignition after approximately five seconds The key information will now be added to the vehicles computer and the new fob will be able to start your vehicle in the future You can program up to three fobs but you must only use one at each time This will stop unauthorized individuals from stealing your key and gaining access to your vehicle You can purchase a brand new key fob on the internet but youll still need to visit a dealer or locksmith to get it cut and programmed