20 Quotes That Will Help You Understand Mazda 6 Key How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to have an extra key in your pocket, whether you dropped the keyfob you were using or it has stopped working. This article will show you how to add, change and re-programme your Mazda 3 keyfobs.

Certain keys require programming by an experienced locksmith, whereas others do not. Use only official Mazda replacements to replace your key fob.

How to add an additional key

You can add an additional key in case you don't have a spare key available or if you accidentally break the one you have. To accomplish this, you'll require a small flathead screwdriver and an CR2025 battery that's new. Once you've got the tools you need, it's time to open the key fob. Find mazda key replacement battery . It's located underneath the metal piece and is easy to find. The cover that covers the back should come off when you press the button. Then, insert the head of the screwdriver into the notch or spacing on the top of the metal part and pull it away.

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

It is only possible to program three keys in your Mazda 3. You don't want to have to use more than two key fobs in order to start your vehicle. This is a security precaution designed to prevent unauthorised users, like valet drivers, from activating your key and starting your car.

How do you reprogram a spare key?

It's a smart idea to know how to reprogram an extra key in the event that your original key gets lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This procedure should work with any Mazda however, you'll require two working keys to start the process of reprogramming. If you don't have two functioning keys, you'll need to bring your vehicle to the dealership to get it done.

Begin by putting yourself in the driver's seat, and closing the door, except for the one that's been opened. Set the ignition to ON and insert the initial working key. Take five seconds before removing the key. Repeat with the second key.

After you've programmed your new key you should have 3 keys that work to start your car in the future. Before placing each key in storage, make sure it's working properly.

You should think about buying a spare Mazda 3 remote, especially if your car is prone to issues. You can buy one online or at your local auto store. Be sure to review the reviews before buying to ensure that you don't purchase one that's not compatible with your vehicle.

How to change the battery using a spare key

It's very frustrating to discover that the key fob you used to use has gone out and you're in a position to not unlock your vehicle. It's simple to replace the battery yourself and save money at the dealership.

The first step is to press the auxiliary button on the back of the key fob. This will release the key made of metal and reveal an opening on each side of the case. Insert the flathead screwdriver into one of these slots, and gently take apart the two sides of the case. Once the battery is fully exposed, remove it and set aside the case somewhere safe from being lost.

Before you begin, make sure that you have a brand new replacement battery. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob works properly.

Replace the battery cap and then replace the battery. Be careful not 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 key fob inside your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lose your key or had it stolen, the car will not start even if you've got the spare key fob. The key fob must be reprogrammed by a dealer to make it work again. It's a difficult and costly ordeal. Therefore, it's recommended to understand how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will eliminate any remaining electrical power in the on-board computer. Then, disconnect both LF-ECU connector and the demand switch connectors. Check for continuity between the following terminals:

Place the key in the slot and turn on the ignition. Leave the key in for about five seconds and then switch 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 desire, but only one should be utilized at any particular time. This will prevent unauthorised people from stealing your keys and gaining access to your vehicle. You can purchase a new key fob online, however you'll still need to go to an expert locksmith or dealer to cut it and get it programmed.