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

It's a good idea to keep a spare key on hand regardless of whether you lost the keyfob or it stopped working. This article will cover everything you must learn about changing, adding, and reprogramming your Mazda 3 key fobs.

A word of caution Certain keys require programming by a professional locksmith or dealer, while other keys don't. Use only genuine Mazda replacements to replace your key fob.

How to add a spare key

If you're not lucky enough to receive a spare keys from the dealer when you buy your Mazda 3 or accidentally break your current key do not fret -- there's the option of adding 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 these items then it's time to remove the key fob and swap the battery. Locate the key release auxiliary. It's located underneath the metal piece and is easy to locate. The back cover should come off when you press the button. Then, put the screwdriver head into the notch on top or the space and take the metal part away.

Insert your spare or new key into the slot after taking out the additional key. Set the ignition to ON, and wait for five seconds before turning it to OFF. This will add the new key's information to the system which will allow it to start your car in the future.

It's important to know that you can only program up to three keys on your Mazda 3. The one thing you don't want is to have more than two working key fobs and not being in a position to get your car started. This is a security measure to prevent unauthorized users from activating your keys and starting your car.

How to reprogram a spare key

It's smart to be aware of how to reprogram a spare key in the event that your original key is lost or stolen. This will keep unauthorised persons from starting your car, or taking it. This process is compatible with any Mazda, though you'll need two keys working to begin the process of reprogramming. If you don't have two functioning keys, you'll need take your vehicle to a dealership to have it done.

Start by stepping into the driver's position, and closing all the doors except the one that is open. Put the first working key into the slot, and then set the ignition to ON. After five seconds, take the key out and repeat the process with a second key.

Once you've programmed your new key, you'll have three keys that you can use to start your car in the future. Before storing each key, make sure it's working properly.

It's a good idea to purchase an extra Mazda 3 key fob, especially if you're a driver who has a tendency to lose their keys or has other issues with it. You can find one online or at your local automobile retailer, but make sure to read the reviews before buying so you aren't purchasing an item that isn't compatible with your car.

How to change the Battery on a spare Key

There's nothing worse than finding that the battery in your key fob has died and Mazda 3 Spare Key you can't unlock your car. It's easy to replace the battery yourself and save money at the dealer.

Press the auxiliary key button located at the back of the keyfob. This will remove the key auxiliary to reveal two slots on the sides of the case. Put the flathead into one of these slots, and then gently pry the two halves of the case apart. Once the battery is fully exposed, remove it and place the case in a place where you will not forget it.

Before you start, make sure you have a new replacement battery. You can purchase them at any store that stocks batteries or at a Mazda dealer close to Winter Garden. Using the right type of battery will ensure that your key fob is working perfectly.

Replace the cap of the battery and then install the new 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 a Keyless Entry System

The key fob in your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lost your key or had it stolen, the car will not start even if it has the spare key fob. The key fob needs to be reprogrammed by a dealer to allow it to work again. This can be a painful and costly experience. So, it's best to learn how you can reset the system.

Remove the battery from the system for 15 minutes. This will remove any residual electricity from the onboard computer. Next, disconnect the LF-ECU and demand switch connectors. Then, check continuity between the following terminals:

Place the key into the slot and turn the ignition ON. The key should remain in the ignition for around five seconds, and then turn it off. The key's details will be added to your vehicle's computer and the new fob will be able start your car in the future. You can program any number of fobs you want however only one should be used at a specific time. This stops unauthorized individuals from copying the key and getting ahold of your car. You can purchase a brand new key fob on the internet, but you'll need to visit an authorized locksmith or dealer to cut it and get it programmed.