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

Whether you dropped your key fob on the floor or it stopped working, it's always best to have a spare key on hand. This article will cover everything you need to learn about changing, adding, and reprogramming your mazda 6 Key 3 key fobs.

A word of warning Certain keys require programming by a locksmith professional or dealer, whereas others don't. Make sure you only use official Mazda replacements for your key fob.

How do I add a spare key

If you're not fortunate enough to get a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one, don't worry -- there's an option to make another key. To do this, you'll need a small flathead screwdriver and the new CR2025 batteries. Once you've got these items and tools, you're ready to open the key fob. Find the key release auxiliary. It's located underneath the metal piece and is easy to locate. When you hit the button, the cover should fall off right away. Then, put the screwdriver's head in the notch on top or the space and pry the metal part off.

After the auxiliary keys are removed, insert your new or Mazda 6 key spare key into the slot. Set the ignition to ON, and wait about five seconds before setting it to off. This will register the new information on the key to the system and allow it to start your vehicle in the future.

It's important to keep in mind that you can only program up to three keys on your Mazda 3. You don't want to use more than two keys to start your vehicle. This is a safety precaution designed to prevent unauthorized users, like valet drivers from activating your key and starting your car.

How do you reprogram a spare key?

It's a smart idea learn how you can reprogram an extra key in the event that your original key gets lost or stolen. This will stop unauthorised people from starting your car or taking it. This will work with any Mazda. You will require two keys that are functioning for the reprogramming to begin. If you don't have two working keys, it's best to take your car to a dealer to have this done.

Begin by getting into your driver's seat, and close the door, with the exception for the one that's been opened. Turn the ignition on and then insert the first working key. Take five seconds before removing the key. Repeat with the second key.

After programming your new key, you should have 3 keys that allow you to start your vehicle in the future. Test each key to be sure that they're operating correctly before placing them away.

It's a good idea to purchase a spare Mazda 3 key fob, especially if your car is one who is prone to losing keys or has other issues with it. You can buy one online or at your local automotive store, but be sure to read the reviews before purchasing so that you can avoid getting the wrong key fob compatible with your vehicle.

How to change the battery on a spare key?

There's nothing more frustrating than finding that the battery for your key fob has died and you can't unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.

Press the auxiliary key button at the back of the keyfob. This will release the metal key auxiliary and reveal slots on both sides of the case. Place the flathead in one of these slots, and then gently push the two halves of the case apart. Once the battery is fully exposed, remove the case and place it in a spot where you'll never forget it.

Before you begin, be sure that you have a brand new replacement battery. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the correct type of battery will ensure that your key fob functions perfectly.

Then, put the new battery into place and replace the cap of the battery. Be careful not to scratch the rubber ring that holds the battery. Then press the two parts of the key fob until you hear an audible click.

How do I reset a Keyless Entry System

The key fob that you have in your mazda key fob 3 is not only a convenience, it's also an important security feature. The car will not start if the key is stolen or lost, even if you've got an extra fob. This is because the key fob has to be reprogrammed by the dealership to work once more. This can be an expensive and time-consuming process and it's a good idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will remove any remaining power from the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. After that, test for continuity between the following terminals:

Place the key into the slot, and turn the ignition ON. Keep the key in place for about five seconds, then switch it off. The key's information has been added to the vehicle's computer and the new fob can start your car. You can program up to three fobs, but you must only use one at a time. This will prevent unauthorized persons from copying the key and gaining access to your vehicle. You can purchase a new keyfob on the internet, but it still needs to be cut and programmed by a dealer.