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How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to keep a spare key on hand no matter if you've dropped the keyfob or it has stopped working. This article will tell you how to add, modify or reprogramme the mazda key programming 3 keyfobs.

Note: Some keys require programming by an expert locksmith, while others do not. Be sure to only make use of official Mazda replacements for your key fob.

How do you add a spare key

If you're not lucky enough to get a spare key from the dealer when you buy your Mazda 3 or accidentally break your current key do not fret -- there's the option of adding another key. To do this, you'll need a small screwdriver with a flat head and a new CR2025 battery. Once you've got these tools you can remove the key fob and replace mazda key fob the battery. First find the auxiliary key release button. The button is located beneath the metal part. It's easy to locate. When you press the button, the cover should fall off right away. Then, insert the screwdriver's head into the notch, or the spacing on the top of the metal part and pull it away.

Insert the spare or new key into the slot following the removal of the accessory key. Set the ignition to ON, and wait about five seconds before setting it to off. This will allow the system to recognize the new key and start your vehicle in the future.

It's important to know that you can only program up to three keys on your Mazda 3. The one thing you don't want is to have more than two functioning key fobs and not being capable of getting your vehicle started. This is a security measure that is designed to block unauthorized users, such as valet drivers from activating your key and thereby launching your vehicle.

How to Reprogram a Spare Key

If you have a spare key it's a good idea know how to program it in the event the original key you had is stolen or lost. This will keep unauthorised persons from starting your car, or stealing it. This should work with any Mazda. You'll need two keys that work for the reprogramming to begin. If you don't own two keys that function then it's best to bring your Mazda to a dealer to have this done.

Begin by getting in your driver's seat and closing the door, except for the one that's been opened. Turn the ignition on and then insert the first working key. Wait five seconds, then take the key out and repeat with the second key.

After you've completed programming your new key, you'll have three working keys that you can use to start your vehicle in the future. Before saving each key, be sure it's working properly.

It's a good idea to buy an extra Mazda 626 Key 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can buy one online or at your local auto retailer, but make sure to read the reviews before purchasing so that you can avoid getting a key fob that's not compatible with your vehicle.

How to change the battery on a spare key?

There's nothing worse than discovering that the battery in your key fob has gone out and you're not able to unlock your car. Fortunately, it's easy to replace the battery and save some cash 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 auxiliary to reveal two slots on the sides of the case. Press the flathead screwdriver into one of these slots. Then, gently break the two parts of the case. After the battery is fully exposed, remove the case and place it somewhere that you will not forget about it.

Before you begin, make sure you have a new replacement battery. You can purchase them at any store that stocks batteries or at a Mazda dealer close to Winter Garden. The correct type of battery is vital to ensure that your key fob functions properly.

Next, put the new battery in the correct place and replace the battery cap. Be careful not damage the rubber ring on which the battery rests. Finally press the two parts of the key fob together until you hear a click.

how much to replace mazda key fob do you reset the Keyless Entry System

The Mazda 3 key fob is not just a convenient feature. It's also a security measure. The car won't start if the key is lost or stolen, even if you've got an extra key fob. This is because the key fob has to be reset at the dealership in order to work again. This can be a painful and costly experience. Therefore, it's recommended to learn how you can reset the system.

To reset the system, disconnect the battery for around 15 minutes. This will remove any remaining electricity from the on-board computer. Then, disconnect the LF ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

Place the key into the slot, then switch the ignition on. The key should remain in the ignition for around five seconds and then switch off. The key's details are now stored in the car's computer and the new fob can start your car. You can program up to three fobs, however, you should only use one at each time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a replacement key for mazda 3 keyfob online, but it will still need to be programmed and cut by a dealer.