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

Whether you dropped your key fob on the ground or Mazda 3 Key Fob it just stopped working, it's always recommended to keep an extra key available. This article will provide everything you must know about adding, changing, and changing the programming of your mazda 6 key fob 3 key fobs.

Certain keys require programming from professional locksmiths, while others do not. Make sure to make use of official Mazda replacements for your key fob.

How do you add an additional key

If you're not fortunate enough to receive a spare keys from the dealership when you buy your Mazda 3 or accidentally break the one you have do not fret -- there's still the option of adding another key. You'll need the flathead screwdriver, as well as the CR2025 replacement battery. Once you've got these items you need, it's time to open the key fob. First look for the button that allows you to release the key. It's located on the underside of the metal part. It's easy to find. When you press the button, the cover should fall off right away. Next, place the head of the screwdriver into the notch or the space on the top of the metal piece and then pull it off.

Once the auxiliary key has been removed, insert your new or spare key into the slot. Turn on the ignition and wait for about five seconds, then turn it to OFF. This will add the new information on the key to the system which will allow it to start your car in the future.

It is important to remember that you can only program up to three keys for your Mazda 3. The most important thing is to have more than two working key fobs, and not be able to get your car started. This is a security measure that is designed to block unauthorized users, like valet drivers who are not authorized to use your key and thereby launching your vehicle.

How to Reprogram a spare key

It's a smart idea to know how to reprogram a spare key in the event that your original key is lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This process should work on any Mazda, though you'll need two keys working to begin the process of reprogramming. If you don't have two working keys, you'll have to bring your car to the dealership to have it done.

Start by stepping into the driver's seat and close all the doors, except the one that is open. Set the ignition to ON and then insert the first working key. Wait for five seconds, then remove the key and repeat the process with the second key.

After programming your new key, you should have three keys that allow you to start your vehicle in the future. Before saving each key, be sure it's functioning correctly.

It's a good idea purchase a spare Mazda 3 key fob, especially if you're someone who often loses your key or has other issues with it. You can buy one online or at your local auto retailer, but make sure to read the reviews before buying so that you can avoid purchasing an item that isn't compatible with your car.

How do I change the battery on a spare key

There's nothing more frustrating than finding that the battery in your key fob has died and you can't unlock your car. Fortunately, it's easy to replace the battery and save yourself some money at the dealership.

The first step is to press the auxiliary key button on the back of the key fob. This will release the metal key that is used as an auxiliary key, and expose two slots on the sides of the case. Press the flathead into one of these slots, and then gently pull the two halves of the case apart. Once the battery is fully exposed, remove it and put it away somewhere safe from being lost.

Before you begin, make sure that you have a new replacement battery. These batteries can be purchased at any store that sells batteries or from a Mazda dealer in Winter Garden. The correct battery is crucial to make sure that your keyfob functions correctly.

Replace the cap on the battery and then put in the new battery. Be careful not to damage the rubber ring on which the battery rests. Then press the two parts of the key fob together until you hear an audible click.

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a convenience. It also serves as an element of security. The car will not start if the key is lost or stolen even if you have an extra fob. The key fob should be reprogrammed by a dealer to enable it to function again. It can be a costly and frustrating ordeal, so it's a good idea to know how to reset the system yourself.

To reset the system, disconnect the battery for about 15 minutes. This will remove any residual electrical current from the computer on board. Next, disconnect the LF-ECU and demand switch connectors. After that, test for continuity between the following terminals:

Place the key into the slot, then switch on the ignition. Turn off the ignition after about five seconds. The key information will now be transferred to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program any number of fobs you want however only one should be used at a certain time. This will keep unauthorised individuals from stealing your keys and gaining access to your car. You can purchase a new key fob on the internet, but you'll still need to go to an authorized locksmith or dealer to have it cut and programmed.