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

Whether you dropped your key fob on the ground or it has stopped working, it's an excellent idea to keep a spare key handy. This article will cover everything you need to be aware of when the process of adding, changing, and changing the programming of your mazda lost car key 3 key fobs.

A word of caution: some keys require programming by a professional locksmith or dealer, while others do not. Be sure to only make use of official mazda 6 wheel lock key replacement replacements for your key fob.

How do you add a spare key

You can add an additional key if you don't have a spare key, or if you accidentally damage your existing one. To accomplish this, you'll require an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you've got the tools then it's time to open the key fob and replace the battery. First look for the auxiliary key release button. It's on the underside of the metal piece and is easy to find. When you press the button, the cover should slide off immediately. Next, insert the head of the screwdriver into the notch or spacing on the top of the metal component and pry it off.

After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition to ON, and wait about five seconds before turning it to off. This will register the new key's details to the system which will allow it to start your vehicle in the future.

It is only possible to program three keys into your Mazda 3. You don't want to use more than two key fobs in order to start your car. This is a security measure to prevent unauthorized users from activating your keys and starting your vehicle.

How to reprogram an unrepaired key

If you have a spare key it's best to know how to reprogram it in the event that your original key is stolen or lost. This will stop unauthorized persons from starting your car, or stealing it. This process should work on any mazda key Copy but you'll need two working keys to start the reprogramming process. If you don't own two keys that function it's recommended to take your car to a dealer to get this done.

Begin by putting yourself in the driver's seat and close the door, with the exception for the one that's been opened. Place the first working key in the slot, then turn the ignition to the ON position. Wait five seconds, then remove the key and repeat with the second working key.

After you've completed programming your new key, you should have three working keys that you can use to start your vehicle in the future. Before you store each key, make sure it's functioning correctly.

You should consider buying an extra Mazda 3 remote, especially in the event that your vehicle is prone to issues. It's possible to find one on the internet or at your local automotive store, but make sure to read reviews before buying so that you aren't buying the wrong key fob compatible with your car.

How to change the battery on a spare key?

It's very frustrating to discover that your key fob has died, and you are in a position to not unlock your car. It's a good thing that it's simple to replace the battery and save yourself some money 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 take out the metal key auxiliary to reveal a slot on both sides of the case. Press the flathead into one of these slots and gently pry the two halves of the case apart. Once the battery is fully exposed, remove the case and place it in a place where you won't forget it.

Be sure to have an additional battery prior to starting. You can purchase them at any store that sells batteries or at an Mazda dealer close to Winter Garden. Choosing the right battery will ensure that your key fob is working perfectly.

Then, put the new battery into place and replace the battery cap. Be careful not to damage the small rubber ring that the battery rests on. Finally, press the two parts of the key fob until you hear the sound of a click.

How to Reset the Keyless Entry System

The key fob inside your Mazda 3 is not only a convenience, it's also an important security feature. The car won't start if your key is lost or stolen even if you have a spare fob. This is because the fob that you have to be reset at the dealership in order to work properly. This could be a costly and time-consuming process, so it's a good idea to know how to reset the system yourself.

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 connector as well as the demand switch connectors. Verify the continuity between the next terminals.

Insert 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 will be added to the vehicle's computer and the new fob will be able to start your vehicle in the future. You can program up to three fobs, however, you must only use one at one time. This will stop unauthorized individuals from stealing your keys and gaining access to your vehicle. You can purchase a replacement key fob on the internet, but you'll still need to go to a dealer or locksmith to cut it and programmed.