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

If you've dropped your key fob on the ground or it simply stopped working, it's always a good idea to have an extra key available. This article will cover everything you should learn about changing, adding, and programming your Mazda 3 key fobs.

Note: Some keys require programming from professional locksmiths, while others don't. Make sure you use only authentic Mazda replacements to replace your key fob.

How to add an extra key

If you're not fortunate enough to receive a spare key from the dealership when you purchase your mazda 2 key replacement 3 or accidentally break the one you have, don't worry -- there's an option to get another key. To accomplish this, you'll require an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you've got all the equipment and tools, you're ready to open the key fob. Find the auxiliary key release. It's located on the underside of the metal portion. It's easy to find. Once you press the button, the back cover should fall off right away. Next, insert the head of the screwdriver into the notch or the space on the top of the metal piece and pull it away.

Insert your spare or new key into the slot after taking out the secondary key. Set the ignition to ON, and wait for about 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's important to note that you can only program up to three keys on your mazda 3 key fob (to Intranet Welfarebox) 3. You don't want to have to utilize more than two key fobs in order to start your car. This is a security precaution designed to prevent unauthorised users, like valet drivers from activating your key and thereby launching your vehicle.

How do I reprogram an unrepaired key

If you have a spare key it's a good idea be aware of how to reprogram it in case the original key you had is stolen or lost. This will prevent unauthorised persons from getting into your car and causing damage to it. This will work with any Mazda. You will require two keys that work to begin the reprogramming process. If you don't have two keys that work then it's best to bring your Mazda to the dealer to have this completed.

Begin by getting into your driver's seat, and closing the door, except for the one that's opened. Place the first working key in the slot, and then set the ignition to the ON position. For five seconds, remove the key and repeat the process with the second key.

Once you've finished programming your new key, you should have three working keys that you can use to start your car in the future. Before placing each key in storage, make sure that it's working correctly.

It is advisable to purchase a spare Mazda 3 remote, especially if your car is prone to issues. You can buy one online or at a local automotive store. Make sure to read reviews before purchasing to ensure you don't buy an item that isn't compatible with your car.

How do I change the battery on a spare key

There's nothing worse than finding that the battery on your key fob been damaged and you're unable to unlock your vehicle. Fortunately, it's easy to replace the battery and save some money at the dealer.

Press the auxiliary key button on the back of the keyfob. This will remove the key's metal cover and reveal a slot on each side of the case. Press the flathead screwdriver into one of these slots. Then, gently take apart the two halves of the case. After the battery is fully exposed, take it out of the case and place it somewhere you will not forget it.

Before you begin, be sure you have a brand new replacement battery. You can find these at any store that stocks batteries or at an Mazda dealer close to Winter Garden. The right kind of battery is vital to ensure that your key fob functions correctly.

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

How to Reset the system's Keyless Entry System

The key fob that you have in your Mazda 3 is not only an extra convenience, but also an important security feature. The car will not start if the key is lost or stolen, even if you've got an extra fob. This is because the key fob has to be reset at the dealership in order to work again. This can be an expensive and stressful experience It's a good idea to know how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will erase any residual electrical current from the computer on board. Next, disconnect both the LF-ECU connector and the demand switch connectors. Check for continuity between the terminals.

Place the key into the slot and turn on the ignition. The ignition should be turned off after approximately five minutes. The key information is now stored in the car's computer and the new fob can start your car. You can program up to three fobs however, you must only use one at one time. This will prevent unauthorized persons from copying the key and gaining access to your car. You can buy a new keyfob online, but it still needs to be programmed and cut by a dealer.