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How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it simply stopped working, it's always recommended to keep a spare key handy. This article will teach you how to add, alter, and reprogramme your Mazda 3 keyfobs.
A word of warning Certain keys need to be programmed by a professional locksmith or dealer, while other keys do not. Be sure to only make use of official Mazda replacements for your key fob.
How do replacement mazda 2 key add a spare key?
If you're unable to find a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current key but don't worry, there's an option to make another key. To do this, you'll need an incredibly small screwdriver, a flathead screwdriver, and an updated CR2025 battery. Once you've got these tools, it's time to open up the key fob to change the battery. First, locate the button that allows you to release the key. It's located on the underside of the metal component and is easy to find. Once you press the button, the back cover will fall off instantly. Then, place the screwdriver's head into the notch on top or the space, and remove the metal part.
Once the auxiliary key has been removed, insert the new or spare key into the slot. Turn the ignition on and wait for approximately five seconds before turning it to off. This will allow the system to recognize the new key and start your vehicle in the future.
You can only program three keys in your Mazda 3. The one thing you don't want is to have more than two functioning key fobs, and not be in a position to get your vehicle started. This is a security measure designed to stop unauthorized users, such as valet drivers, from activating your key and thereby launching your vehicle.
How to Reprogram a spare key
It's smart to be aware of how to reprogram a spare key in the event that the original key is lost or stolen. This will stop unauthorized persons from starting your car or taking it. This method should work on any Mazda, though you'll need two working keys to begin the process of reprogramming. If you don't have two keys that work then it's best to bring your vehicle to a dealer to get this completed.
Start by stepping into the driver's position, and close all the doors, except the one that is open. Insert the first working key in the slot, and then turn the ignition to ON. Wait five seconds, then remove the key and repeat the procedure with the second key.
Once you've finished programming your new key, you should have three keys that you can use to start your car in the future. Test each key to ensure sure that they're functioning properly before placing them away.
You should consider buying a spare Mazda 3 remote, especially if your car is prone to issues. You can purchase one online or in your local automotive store. Make sure you review the reviews before buying to ensure you don't buy a key fob which isn't compatible with your vehicle.
How to change the Battery on a spare key
There's nothing worse than finding that the battery for your key fob has 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 yourself some money at the dealership.
Press the auxiliary key button on the back of the keyfob. This will remove the key auxiliary and reveal slots on both sides of the case. Put the flathead into one of these slots and then gently pull the two halves apart. Once the battery is fully exposed, take it out and place the case somewhere you won't forget it.
Make sure you have a new battery ready prior to beginning. They can be found at any retailer that sells batteries or at an Mazda dealer close to Winter Garden. Choosing the correct battery will ensure that your key fob operates perfectly.
Next, put the replacement battery in the correct place and replace the cap of the battery. Be careful not to damage the rubber ring that holds the battery. Finally press the two halves of the key fob until you hear a click.
How to reset the system's Keyless Entry System
The key fob that you have in your Mazda 3 is not only an added convenience, but it's also an important security feature. The car won't start if the key is lost or stolen, even if you've got an extra fob. This is because the key fob needs to be reprogrammed at the dealership in order to function properly. This can be an expensive and stressful experience and it's a good idea to understand how to reset the system yourself.
Remove the battery from the system for 15 minutes. This will eliminate any remaining power from the on-board computer. Next, disconnect both the LF-ECU connector as well as the demand switch connectors. Then, verify the continuity between the following terminals:
Insert the key into the slot, then turn the ignition ON. Leave the key in for about five seconds and then turn it off. The key information will now be saved to your car's computer, and the new fob will be able start your car in the future. You can program as many fobs you want however only one should be used at any particular 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 programmed and cut by an authorized dealer.