Mazda 6 Key: The Good, The Bad, And The Ugly How to Add, Change, and Reprogram a Mazda 3 Spare Key

If you've dropped your key fob on the ground or it just stopped working, it's always recommended to keep a spare key on hand. This article will explain everything you should know about the process of adding, changing, and changing the programming of your Mazda 3 key fobs.

A word of warning Some keys require programming by a professional locksmith or dealer, while others do not. Make sure you use only authentic Mazda replacements to replace your key fob.

How to add an additional 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 one but don't worry, there's still the option of adding another key. To do this, you'll need a small screwdriver with a flat head and an CR2025 battery that's new. Once you've got these items, it's time to open the key fob to change the battery. Locate the key release auxiliary. The button is located on the underside the metal part. It's easy to locate. When you hit the button, the cover should fall off right away. Next, insert the screwdriver's head into the notch, or the spacing at the top of the metal component 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 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 is only possible to program three keys to your Mazda 3. You don't want to utilize more than two key fobs to start your vehicle. This is a security measure designed to prevent unauthorized users, such as valet drivers, from activating your key and starting your car.

How to Reprogram a spare key

If you have a spare key, it's a good idea be aware of how to reprogram it in the event that the original key you had is stolen or lost. This will stop unauthorised people from getting into your car and causing damage to it. This process is compatible with any Mazda however you'll need two keys that work to begin the reprogramming process. If you don't have the two working keys, you'll need take your vehicle to a dealership to have it done.

Start by stepping into the driver's seat and close all the doors with the exception of the one that is open. Set the ignition to ON and insert the first working key. Wait five seconds before removing the key. Repeat mazda 2 key fob battery with the second 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 placing each key in storage, make sure that it's functioning properly.

It's a good idea to purchase an extra Mazda 3 key fob, especially if your car is one who has a tendency to lose their keys or has other issues with it. You can purchase one on the internet or at your local auto store. Be sure to go through reviews prior to purchasing to ensure that you don't get the wrong key fob that isn't compatible with your vehicle.

How do you change the battery using a spare key

It's a nightmare to discover that your key fob has failed, and you are not able to unlock your car. It's easy 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 metal key that is used as an auxiliary key, and expose a slot on both sides of the case. Press the flathead screwdriver into one of these slots and gently pry apart the two sides of the case. When the battery is fully exposed, remove the case and place it somewhere that you will not forget it.

Make sure you have an extra battery in place before you begin. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the right type of battery will ensure that your key fob is working correctly.

Then, place the new battery in place and replace the cap of the battery. Be careful not to damage the rubber ring on which the battery rests. The two halves should be pressed together until you can hear the click.

How to Reset a Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also a security feature. If you lose your key or had it stolen the car won't start even if it has the spare key fob. This is because the key fob has to be reset at the dealership to function properly. This can be a costly and frustrating ordeal, so it's a good idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will take out any remaining electrical power in the on-board computer. Then, disconnect the LF ECU and demand switch connectors. Then, verify the continuity between the following terminals:

To program the new key or spare, place it in the slot and turn the ignition to ON. Stop the ignition after approximately five seconds. The key information will now be added to the vehicle's computer, and the new fob will be able start your car in the future. You can program up to three fobs but you must only use one at each time. This will stop unauthorised people from copying your key and gaining access to your vehicle. You can purchase a brand new keyfob online, however it will still need to be programmed and cut by a dealer.