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

It's a good idea always to have an extra key at hand no matter if you've dropped your keyfob or it stopped working. This article will show you how to add, change, and reprogramme your Mazda 3 keyfobs.

Certain keys require programming by an experienced locksmith, whereas others do not. Make sure to use official mazda key fob replacements for your key fob.

How do you add a spare key

If you're not lucky enough to get a spare key from the dealership when you buy your Mazda 3 or accidentally break your current key but don't worry, there's an option to get another key. You'll need to use a flathead screwdriver and a new CR2025 battery. Once you have the items then it's time to open the key fob. First, locate the key release button for Mazda key fob the auxiliary key. It's on the underside of the metal part and is easy to locate. The cover on the back should fall off the moment you press the button. Then, you can insert the head of the screwdriver into the notch or the space at the top of the metal part and pull it away.

Insert your spare or new key into the slot after removing the accessory key. Turn on the ignition and wait for approximately five seconds before turning it to off. This will add the new information on the key to the system, allowing it to start your car in the future.

It's important to note that you can only program up to three keys for your Mazda 3. You don't want to have to utilize more than two key fobs in order to start your vehicle. This is a safety measure designed to prevent unauthorised users, like valet drivers, from activating your key and thereby launching your vehicle.

How do I reprogram a spare key?

If you have a spare key it's important to be aware of how to reprogram it in case the original key you had is stolen or lost. This will stop unauthorized persons from stealing your car and starting it. This process should work on any Mazda however you'll need two keys that work to begin the reprogramming. If you don't have the two working keys, you'll need to take your vehicle to a dealership to get it done.

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

Once you've completed programming your new key, replace mazda key you should have three keys that will allow you to start your car in the Near By future. Test each key to ensure sure that they're working properly before taking them off.

You should think about purchasing an extra Mazda 3 remote, especially in the event that your vehicle is prone to problems. You can find one online or at your local automotive store, but be sure to read reviews before buying so that you aren't buying the wrong key fob compatible with your vehicle.

How to change the battery on a spare key?

There's nothing worse than discovering that the battery on your key fob been damaged and you're unable to unlock your vehicle. It's a good thing that it's simple to replace the battery and save yourself some money at the dealer.

Press the auxiliary key button located at the back of the keyfob. This will remove the key that is used as an auxiliary key, and expose a slot on both sides of the case. Put the flathead screwdriver in one of these slots and gently remove the two parts of the case. Once the battery is fully exposed, take it out and place the case somewhere that you won't forget about it.

Be sure to bring a new battery ready before you begin. They are available at any store that sells batteries or at an Mazda dealer close to Winter Garden. Choosing the right battery will ensure that your key fob functions correctly.

Next, put the replacement battery in its place and then replace mazda key the cap of the battery. Be careful not damage the rubber ring that holds the battery. Then press the two parts of the key fob together until you hear a click.

How to Reset the Keyless Entry System

The key fob in your Mazda 3 is not only a convenience, it's also an important security feature. If you lose your key or have it stolen the car will not start even if you've got the spare key fob. This is because the key fob has to be reset at the dealership to work properly. It can be a stressful and costly process. Therefore, it's recommended to learn how to reset the system.

Disconnect the battery from the system for 15 minutes. This will eliminate any residual electricity from the on-board computer. Then, disconnect the LF ECU and demand switch connectors. Then, verify the continuity between the following terminals:

To program a new key, or a spare, insert it into the slot and set the ignition to ON. The key should remain in the ignition for about five seconds and then turn off. The key's information will be transferred to your vehicle's computer and the new fob will be able to start your car in the future. You can program any number of fobs you need, but only one should be in use at any specific time. This will keep unauthorised individuals from stealing your key and gaining access to your vehicle. You can buy a new key fob online, but you'll still have to visit a dealer or locksmith to get it cut and programmed.