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

It's a good idea to have a spare key on hand no matter if you've dropped your keyfob or it was unable to function. This article will explain everything you must learn about adding, changing, and changing the programming of your Mazda 3 key fobs.

Warning: Some keys require programming by professional locksmiths, while others don't. Make sure to use genuine mazda keyless entry remote replacements for your key fob.

how much is a mazda key fob replacement (redirect to www.easyfie.com) to add a spare key

If you're not lucky enough to receive a spare key from the dealership when you buy your Mazda 3 or accidentally break your current one do not fret -- there's still an option to get another key. You'll need to use the flathead screwdriver, as well as a CR2025 new battery. Once you've got these items you can open the key fob and swap the battery. First, locate the key release button for the auxiliary key. It's located on the underside of the metal component and is easy to locate. When you press the button, the cover should be removed immediately. Then, insert the screwdriver's head in the notch on top or into the space and take the metal part away.

Insert your spare or new key into the slot after removing the auxiliary key. Set the ignition to ON, and wait about five seconds before setting it to off. This will add the new key's information to the system, allowing it to start your vehicle in the future.

It's important to know that you can only program up to three keys on your Mazda 3. You don't want to use more than two key fobs in order to start your car. This is a security precaution designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and starting your vehicle.

How to Reprogram a Spare Key

If you have a spare key it's best to know how to program it if your original key gets stolen or lost. This will keep unauthorised persons from starting your vehicle or stealing it. This should work with any Mazda. You'll require two keys that are functioning for the reprogramming to begin. If you don't own two keys that function then it's best to bring your vehicle to a dealer to have this done.

Start by stepping into the driver's seat and close all the doors with the exception of the one that is open. Turn the ignition on and insert the first working key. Wait five seconds before removing the key. Repeat with the second key.

After you've programmed your new key you should have 3 keys that will be able to start your car in the future. Check each key to make sure that they're functioning properly before placing them away.

It's a good idea buy a spare Mazda 3 key fob, especially if you're someone who is prone to losing keys or has other issues with it. It's possible to find one on the internet or at your local auto retailer, but make sure to read the reviews prior to purchasing so you aren't buying a key fob that's not compatible with your car.

How do you change the battery with a spare key?

There's nothing more frustrating than discovering that the battery in your key fob has failed and you are unable to unlock your vehicle. It's a good thing that it's simple to replace the battery and save some money at the dealer.

The first step is to press the auxiliary key button located on the back of the key fob. This will detach the key from the metal and reveal an opening on each side of the case. Place the flathead in one of these slots and gently pry the two halves apart. Once the battery is fully exposed, take it out of the case and put it in a spot where you'll never forget it.

Before you start, make sure that you have a brand new replacement battery. They can be bought from any store that sells batteries or from a mazda smart key dealer in Winter Garden. Choosing the right battery will ensure that your key fob works perfectly.

Replace the cap on the battery and then replace the battery. Be careful not to damage the small rubber ring the battery sits on. The two halves should be pressed together until you hear the click.

How do I reset a Keyless Entry System

The mazda keys replacement 3 key fob is not just a convenience. It's also a security measure. If you lost your key or had it stolen the car won't start even if you've got the spare key fob. This is because the fob that you have to be reprogrammed by the dealership in order to work properly. This could be a costly and time-consuming process It's a good idea to know how to reset the system yourself.

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

Put the key in the slot, then switch on the ignition. The key should remain in the ignition for about five seconds and then switch it off. The key's information is added to the vehicle's computer and the new fob is able to start your vehicle. You can program up to three fobs, however, you must only use one at each time. This will keep unauthorised individuals from stealing your keys and gaining access to your vehicle. You can purchase a new keyfob online, but it will still need to be cut and programmed by a dealer.