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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 stopped working its always an excellent idea to keep an extra key in your pocket This article will show you how to add alter or reprogramme your Mazda 3 keyfobs A word of warning Some keys require programming by a professional locksmith or dealer while others do not Only use official Mazda replacements to replace your key fob How to add a spare key You can also add another key in the event that you dont have a spare key available or when you accidentally damage the one you already have To accomplish this youll need a small flathead screwdriver and an updated CR2025 battery Once youve got the tools and tools youre ready to open the key fob First look for the auxiliary key release button mazda key fobs s located on the underside of the metal part and is easy to locate When you hit the button the back cover should fall off right away Then you can insert the screwdrivers tip into the notch on top or in the space and take the metal part away Insert your spare or new key into the slot following the removal of the auxiliary key Set the ignition ON and then wait for around 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 The final thing you want is to have more than two working key fobs and not be able to get your car started This is a safety measure to stop anyone who is not authorized from activating your keys and starting your vehicle How to Reprogram a Spare Key Its a good idea to know how to reprogram a spare key in the event that the original key is lost or stolen This will stop unauthorised people from opening your car or stealing it This should work with any Mazda Youll require two keys that are functioning to begin the reprogramming If you dont have two working keys youll need to take your vehicle to a dealership to complete the process Start by stepping into the drivers position and closing all the doors except the one that is open Turn the ignition on and insert the first working key Take five seconds before removing the key Repeat the process with the second key Once youve programmed your new key you should have three keys that you can use to start your car in the future Test each key to make sure that theyre operating correctly before taking them off Its a good idea to buy an extra Mazda 3 key fob especially if youre someone who frequently loses their key or has other issues with it You can purchase one online or at your local auto retailer but make sure to read the reviews before buying so you can avoid purchasing the wrong key fob compatible with your car How to change the Battery on a spare Key Its awful to discover that the key fob you used to use has gone out and you are in a position to not unlock your vehicle Its easy to replace the battery yourself and save money at the dealership The first step is to press the auxiliary key button on the back of the key fob This will remove the metal key that is used as an auxiliary key and expose two slots on the sides of the case Use the screwdrivers flathead to push it into one of these slots and then gently take apart the two sides of the case When the battery is fully exposed take it out of the case and place it in a place where you wont forget about it Before you start make sure that you have a brand new replacement battery They are available at any store that stocks batteries or at a Mazda dealer near Winter Garden The right kind of battery is essential to make sure that your keyfob functions correctly Then place the new battery in place and replace the cap of the battery Be careful not to scratch the rubber ring on which the battery rests Then press the two halves of the key fob until you hear the sound of clicking How do you reset the Keyless Entry System The key fob in your Mazda 3 is not only an added convenience but its also an important security feature The car wont start if your key is lost or stolen even if youve got a spare fob This is because the key fob has to be reprogrammed at the dealership in order to function properly Its a difficult and costly experience So its best to learn how to reset the system To reset the system remove the battery for 15 minutes This will eliminate any remaining electrical current from the computer on board The next step is to disconnect the LFECU and demand switch connectors Check for continuity between the terminals Put the key in the slot then turn on the ignition Switch off the ignition after about five minutes The information from the key will 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 however you must only use one at each time This will prevent unauthorized people from stealing your keys and gaining access to your vehicle You can purchase a replacement keyfob from the internet however it still needs to be cut and programmed by an authorized dealer
