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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have an extra key in your pocket regardless of whether you lost the keyfob you were using or it stopped working. This article will tell you how to add, modify or reprogramme your Mazda 3 keyfobs.
A word of caution Certain keys need to be programmed by a locksmith professional or dealer, whereas other keys don't. Make sure you use only genuine Mazda replacements to replace your key fob.
How do I add a spare key?
You can also add an additional key if you don't have a spare key available or if you accidentally damage the one you already have. You'll need the flathead screwdriver, as well as a new CR2025 battery. Once you have the items then it's time to open the key fob. First look for the button that allows you to release the key. The button is on the bottom of the metal portion. It's easy to locate. The back cover should slide off when you press the button. Then, insert the head of the screwdriver into the notch or spacing on the top of the metal piece and pull it off.
Insert the spare or new key into the slot after taking out the auxiliary key. Set the ignition to ON and wait for around five seconds before turning it to off. This will add the new key's information to the system and allow it to start your car in the future.
It is only possible to program three keys to your Mazda 3. You don't want to utilize more than two key fobs in order to start your vehicle. This is a security precaution that is designed to block unauthorized users, such as valet drivers from activating your key and starting your vehicle.
How do you reprogram a spare key?
It's a smart idea be aware of how to reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorised people from stealing your car and starting it. This will work with any Mazda. You'll require two keys that are functioning to begin the reprogramming process. If you don't have two working keys, you'll have to bring your car to the dealership to get it done.
Begin by stepping into your driver's seat, and close the door, except for the one that's opened. Place the first working key into the slot, and then set the ignition to the ON position. Wait five seconds, then remove the key and repeat with the second key.
Once you've programmed your new key, you'll have three working keys that you can use to start your car in the future. Before placing each key in storage, make sure that it's functioning properly.
It's a good idea to purchase an extra Mazda 3 key fob, especially if you're a driver who often loses your key or has other issues with it. It's possible to find one on the internet or at a local automotive store, but be sure to read review s before buying so that you can avoid getting the wrong key fob compatible with your car.
How do you change the battery on a spare key?
There's nothing more frustrating than finding that the battery on your key fob been damaged and you're unable to unlock your car. It's a good thing that it's simple to replace the battery and save some money at the dealer.
Press the auxiliary key button on the back of the keyfob. This will take out the metal key auxiliary to reveal a slot on both sides of the case. Place the flathead in one of these slots and then gently push the two halves of the case apart. Once the battery has been fully exposed, remove the case and place it in a spot where you'll never forget it.
Be sure to bring a new battery ready prior to beginning. You can find these at any retailer that sells batteries or at a Mazda dealer close to Winter Garden. The correct type of battery is crucial to ensure that your key fob functions properly.
Next, put the new battery in its place and then replace the battery cap. Be careful not damage the rubber ring that holds the battery. The two halves should be pressed together until you hear a click.
How do I reset the system's Keyless Entry System
The Mazda 3 key fob is not just a practical feature. It's also a security measure. If you lose your key or had it stolen, the car will not start even if you have the spare key fob. The key fob must be reprogrammed by the dealer to allow it to work again. It can be a costly and stressful experience, so it's a good idea to understand how to reset the system yourself.
To reset the system, disconnect the battery for approximately 15 minutes. This will clear any residual electric current from the onboard computer. Then, disconnect both the LF-ECU connector and the demand switch connectors. After that, test for continuity between the following terminals:
To program a new key or a spare, place it in the slot and turn the ignition to ON. Keep the key in place for about five seconds, then turn off. The key information will now be added to the vehicle's 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 each time. This will keep unauthorised individuals from stealing your key and gaining access to your car. You can purchase a new keyfob on the internet, but it must be programmed and cut by an authorized dealer.