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

Whether you dropped your key fob on the ground or it just stopped working, it's recommended to keep a spare key on hand. This article will cover everything you must be aware of adding, changing, and changing your Mazda 3 key fobs.

Warning: Some keys require programming from an experienced locksmith, whereas others don't. Make sure you use only genuine Mazda replacements to replace your key fob.

How to Add a Spare Key

You can add an additional key in case you don't have a spare key available or in the event that you break the one you have. You'll need a flathead screwdriver, and a new CR2025 battery. Once you've got the tools you need, it's time to open the key fob. Find the key release auxiliary. It's located underneath the metal piece and is easy to locate. The back cover should come off the moment you press the button. Then, you can insert the screwdriver's tip into the notch at the top or the space, and take the metal part away.

After the auxiliary keys are removed, insert your new or spare key into the slot. Turn the ignition on and wait for approximately five seconds, then set it to OFF. This will add the new key's information into 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 for your mazda key replacement near me 3. You don't want to have to utilize more than two key fobs in order to start your vehicle. This is a security precaution that is designed to block unauthorized users, like valet drivers from activating your key and thereby launching your vehicle.

How to Reprogram a spare key

It's a smart idea know how you can reprogram an extra key in the event that the original key is lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This should work with any Mazda. You'll require two keys that are working to begin the reprogramming. If you don't have two keys that function then it's best to bring your vehicle to a dealer to get this completed.

Start by getting into the driver's position and closing all the doors except the one that is open. Turn the ignition on and insert the initial working key. Wait five seconds, then remove the key and repeat the procedure with the second working key.

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

It's a good idea to purchase an extra replacement mazda key 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. You can purchase one online or at your local auto store. Make sure you look up reviews before you purchase so that you don't get a key fob which isn't compatible with your vehicle.

How to change the Battery on a spare key

It's very frustrating to discover that your key fob has failed and you're locked out of your vehicle. Fortunately, it's easy 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 metal key auxiliary to reveal a slot on both sides of the case. Place the flathead in one of these slots, and then gently pull the two halves apart. When the battery is fully exposed, take it out of the case and put it somewhere that you will not forget it.

Be sure to have an extra battery in place before you begin. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob functions perfectly.

Then, place the new battery in place and replace the cap on the battery. Be careful not to scratch the rubber ring on which the battery rests. Finally press the two parts of the key fob until you hear a click.

How to reset the system's Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It also serves as an element of security. The car won't start if your key is lost or stolen, even if you've got an extra fob. This is because the key fob needs to be reprogrammed at the dealership to work once more. It can be a stressful and costly process. Therefore, it's advisable to learn how to reset the system.

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

To program a new key or a spare, place it in the slot and turn the ignition to ON. Put the key in for around five seconds and then switch it off. The key's information is transferred to the computer of your vehicle and the new fob will start your vehicle. You can program up to three fobs but you should only use one at one time. This will prevent unauthorised people from stealing your key and getting access to your vehicle. You can buy a new keyfob online, however it must be cut and programmed by a dealer.