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

It's a good idea always to have an extra key at hand, whether you dropped your keyfob, or it was unable to function. This article will provide everything you must be aware of changing, adding, and changing your Mazda 3 key fobs.

Note: Some keys require programming by an expert locksmith, while others don't. Make sure you only make use of official Mazda replacements for your key fob.

How do you add an extra key

You can also add an additional key if you don't have a spare key or in the event that you break the one you have. You'll need a flathead screwdriver and a CR2025 new battery. Once you have these items you can open the key fob to change the battery. Find the key release auxiliary. It's located on the bottom of the metal part. It's easy to find. The cover that covers the back should come off the moment you press the button. Then, you can insert the screwdriver head into the notch on top or in the space, and pry the metal part off.

Insert the spare or new key into the slot following the removal of the additional key. Turn on the ignition and wait for about five seconds, then set it to OFF. This will add the new information on the key to the system, allowing it to start your vehicle in the future.

It is important to remember that you can only program up to three keys on your Mazda 3. The most important thing is to have more than two working key fobs and not being in a position to get your vehicle started. This is a safety precaution designed to stop unauthorized users, like valet drivers from activating your key and thereby starting your car.

How do you reprogram a spare key?

It's a smart idea to know how to reprogram a spare key in the event that your original key becomes lost or stolen. This will keep unauthorised persons from opening your car or taking it. This process is compatible with any Mazda, though you'll need two working keys to begin the process of reprogramming. If you don't own two keys that function it's recommended to take your car to a dealer to get this done.

Start by stepping into the driver's position, and shutting all doors, with the exception of the one that is open. Set the ignition to ON and insert the first working key. After five seconds, take the key out and repeat the process with the second key.

After programming your new key, you should have 3 keys that will start your vehicle in the future. Before placing each key in storage, make sure it's working properly.

It's a good idea to purchase a spare Mazda 3 key fob, mazda 3 spare Key especially if you're someone who often loses your key or has other issues with it. You can buy one online or in your local automotive store. Make sure you go through reviews prior to purchasing so that you don't get a key fob which isn't compatible with your car.

How to change the Battery on a spare Key

It's depressing to find out that the key fob you used to use has gone out and you're not able to 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 button on the back of the key fob. This will release the metal key auxiliary to reveal a slot on both sides of the case. Press the flathead into one of these slots and then gently push the two halves apart. When the battery is completely exposed, remove it and place the case somewhere you won't forget it.

Be sure to have a replacement battery prior to starting. 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 works effectively.

Next, put the replacement mazda key battery in the correct place and replace the battery cap. Be careful not to scratch the small rubber ring the battery is placed on. Finally press the two halves of the key fob until you hear the sound of a click.

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also an element of security. The car won't start if your key is lost or stolen, even if you've got a spare key fob. The key fob should be reset by the dealer to allow it to work again. This could be a costly and mazda 3 Spare key stressful experience therefore it's a great idea to learn how to reset the system yourself.

To reset the system, disconnect the battery for around 15 minutes. This will remove any residual electricity in the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Then, check continuity between the following terminals:

Put the key in the slot, and switch the ignition on. Put the key in for around five seconds and then switch it off. The key's information is added to the vehicle's computer and the new fob can start your car. You can program up to three fobs however, you must only use one at a time. This will stop unauthorised people from copying your key and gaining access to your car. You can buy a new key fob online, but you'll still need to go to a locksmith or dealer in order to cut it and programmed.