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Mazda 6 Key: The Good, The Bad, And The Ugly
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, it's always an excellent idea to keep a spare key handy. This article will explain everything you need to know about the process of adding, changing, and changing your Mazda 3 key fobs.

Be aware that some keys require programming by professional locksmiths, while others do not. Make sure to use official Mazda replacements for your key fob.

How do you add a spare key

If you're not lucky enough to find a spare key from the dealership when you purchase your Mazda 3 or accidentally break the one you have but don't worry, there is still an option to make another key. You'll need a flathead screwdriver, and an CR2025 battery. Once you've got these items and tools, you're ready to open the key fob. Locate the auxiliary key release. The button is located on the bottom of the metal portion. It's easy to find. The cover on the back should fall off the moment you press the button. Then, insert the screwdriver's head into the notch or spacing at the top of the metal component and pry it off.

Insert your spare or new key into the slot after you have removed the accessory key. Turn on the ignition and wait for approximately five seconds, and then turn it to off. This will add the new information on the key to the system, allowing it to start your car in the future.

It's important to know that you can only program up to three keys on your Mazda 3. The final thing you want is to have more than two functioning key fobs and not being able to get your car started. This is a security measure to stop unauthorized users from activating your keys and then starting your vehicle.


How do I reprogram a spare key

If you have a spare key it's best to be aware of how to program it if the original key you had is stolen or lost. This will stop unauthorized persons from starting your car, or stealing it. This will work with any Mazda. You will need two keys that work for the reprogramming to begin. If you don't own two working keys, you'll need take your vehicle to the dealership to get it done.

Begin by getting into your driver's seat, and shutting the door, excluding for the one that's opened. Place the working key in the slot, then set the ignition to ON. After five seconds, remove the key. Repeat the process with the second key.

After programming your new key, you should have three keys that will work to start your vehicle in the future. Before placing each key in storage, make sure that it's functioning properly.

You should think about buying a spare Mazda 3 remote, especially in cases where your car is prone to issues. You can purchase one on the internet or at your local auto store. Be sure to look up reviews before you purchase to ensure that you don't purchase the wrong key fob that isn't compatible with your car.

How do I change the battery on a spare key?

There's nothing worse than discovering that your key fob battery has been damaged and you're unable to unlock your vehicle. It's not a problem to replace the battery and save yourself some cash at the dealership.

The first step is to press the auxiliary key button that is located on the back of the key fob. This will remove the metal key auxiliary and reveal slots on both sides of the case. Press the flathead screwdriver into one of these slots. Then, gently take apart the two sides of the case. When the battery is completely exposed, take it out and put it away somewhere safe from being lost.

Make sure you have an additional battery before you begin. You can purchase them at any store that stocks batteries or at an Mazda dealer close to Winter Garden. The right type of battery is vital to make sure that your keyfob functions properly.

Replace the cap on the battery and then put in the new battery. Be careful not to damage the rubber ring that holds the battery. Then, press the two halves of the key fob until you hear an audible click.

How to reset the system's Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It's also a security feature. If you lost your key or had it stolen the car won't start even if you've got the spare fob. This is because the key fob needs to be reprogrammed at the dealership to work once more. This could be a costly and frustrating experience and it's a good idea to know how to reset the system yourself.

To reset the system, unplug the battery for about 15 minutes. This will erase any residual electrical power in the on-board computer. Then, disconnect the LF ECU and demand switch connectors. Check continuity between the following terminals.

To program a new key or a spare, insert it into the slot and set the ignition to ON. The ignition should be turned off after approximately five seconds. The key information is now added to the vehicle's computer and the new fob will start your car. You can program as many fobs as desire however only one must be used at any given time. This stops unauthorized individuals from copying your key and getting ahold of your vehicle. mazda key fob can purchase a replacement key fob on the internet, but you'll still need to visit an expert locksmith or dealer to have it cut and programmed.