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

If you've dropped your key fob on the ground or it stopped working, it's an excellent idea to keep an extra key in your pocket. This article will show you how to add, alter or reprogramme your mazda 3 key 3 keyfobs.

A word of caution Certain keys require programming by a locksmith professional or dealer, while others do not. Be sure to only make use of official Mazda replacements for your key fob.

How do you add an additional key

If you're not lucky enough to find a spare key from the dealer when you buy your Mazda 3 or accidentally break the one you have, don't worry -- there is still a way to add another key. You'll need a flathead screwdriver, and the CR2025 replacement battery. Once you have the items then it's time to open the key fob. Find the key release auxiliary. It's located beneath the metal portion. It's easy to locate. Once you hit the button, the cover should fall off right away. Then, put the screwdriver head into the notch at the top or in the space, and remove the metal part.

Insert your new or spare key into the slot after taking out the accessory key. Turn on the ignition and wait for about five seconds, then set it to off. This will allow the system to recognize the new key and begin your vehicle in the future.

It is important to remember that you can only program up to three keys on your mazda replacement keys 3. You don't want to have to use more than two key fobs in order to start your vehicle. This is a precautionary measure to stop unauthorised users from activating your keys and launching your car.

How to Reprogram a spare key

If you have a spare key it's a good idea be aware of how to program it in the event your original key is stolen or lost. This will stop unauthorized persons from stealing your car and starting it. This should work with any Mazda. You will need two keys that are working to begin the reprogramming. If you don't own two keys that function, you should take your mazda 2 key fob to the dealer to get this done.

Begin by stepping into your driver's seat and close the door, with the exception for the one that's been opened. Put the first working key in the slot, and then set the ignition to the ON position. Wait five seconds, then take the key out and repeat the procedure with the second key.

After you've programmed your new key, you'll have three working keys you can use to start your vehicle in the future. Before you store each key, make sure that it's working correctly.

You should think about purchasing a spare Mazda 3 remote, especially if your car is prone to issues. You can buy one online or in your local automotive store. Make sure to review the reviews before buying so that you don't get the wrong key fob that isn't compatible with your vehicle.

How do you change the battery on a spare key?

There's nothing worse than finding that your key fob battery has failed and you are unable to unlock your vehicle. Luckily, it's easy to replace the battery and save some money at the dealership.

The first step is to press the auxiliary key button located on the back of the key fob. This will take out the metal key and reveal a slot on each side of the case. Place the flathead in one of these slots and then gently push the two halves of the case apart. When the battery is fully exposed, remove the case and place it somewhere that you will not forget about it.

Before you begin, be sure that you have a brand new replacement battery. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Choosing the right battery will ensure that your key fob is working properly.

Next, put the new battery into place and replace the cap of the battery. Be careful not damage the rubber ring that holds the battery. Press the two halves together until you can hear the click.

How to Reset the Keyless Entry System

The key fob in your Mazda 3 is not only an option for convenience, it's an important security feature. The car will not start if the key is stolen or lost, even if you've got a spare fob. The key fob needs to be reset by the dealer to allow it to work again. It's a difficult and costly experience. Therefore, it's advisable to understand how you can reset the system.

To reset the system, unplug the battery for about 15 minutes. This will take out any remaining electrical current from the computer on board. Then, disconnect the LF-ECU connector and the demand switch connectors. Check continuity between the following terminals.

Place the key in the slot and turn the ignition ON. Turn off the ignition after about five seconds. The key information will now be added to your vehicle's computer and the new fob will be able to start your vehicle in the future. You can program as many fobs you desire, but only one should be in use at any specific time. This stops unauthorized individuals from copying your key and gaining access to your car. You can purchase a replacement key fob online, but you'll still need to go to an expert locksmith or dealer to cut it and get it programmed.