How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to keep a spare key on hand regardless of whether you lost mazda key fob the keyfob you were using or it was unable to function. This article will go over everything you need to learn about adding, changing, and programming your mazda keyless remote 3 key fobs.
A word of warning Certain keys require programming by a locksmith professional or dealer, whereas other keys do not. Make sure you use only authentic mazda 6 key fob programming replacements to replace your key fob.
How to add an additional key
You can add a second key if you don't have a spare key, or if you accidentally break the one you have. To accomplish this, you'll require a small screwdriver with a flat head and an updated CR2025 battery. Once you've got all the equipment you need, it's time to open the key fob. First find the key release button for the auxiliary key. The button is located on the underside the metal part. It's easy to find. The back cover should slide off as soon as you press the button. Then, you can insert the screwdriver's head into the notch at the top or the space, and remove the metal part.
Insert your new or spare key into the slot following the removal of the additional key. Set the ignition ON and then wait for around five seconds, then turn it to OFF. This will register the new key's details to the system, allowing it to start your car in the future.
It is important to remember that you can only program up to three keys on your Mazda 3. The last thing you want is to have more than two working key fobs and not be able to get your car started. This is a safety precaution designed to stop unauthorized users, like valet drivers, from activating your key and thereby starting your car.
How to Reprogram a spare key
It's a good idea to know how you can reprogram a spare key in the event that your original key gets lost or stolen. This will prevent unauthorised persons from stealing your car and starting it. This will work with any Mazda. You will need two keys that work to begin the reprogramming process. If you don't have the two working keys, you'll need to bring your car to the dealership to get it done.
Start by stepping into the driver's seat and close all the doors, except the one that is open. Turn the ignition on and insert the first functioning key. Take five seconds before removing the key. Repeat the process with the second key.
Once you've finished programming your new key, you should have three working keys you can use to start your car in the future. Check each key to make sure that they're operating correctly before putting them away.
It's a good idea to buy a spare Mazda 3 key fob, especially if your car is one who is prone to losing keys or has other issues with it. You can purchase one online or at your local auto retailer, but make sure to read the reviews prior to purchasing so you can avoid purchasing the wrong key fob compatible with your car.
How do I change the battery with a spare key?
There's nothing worse than finding that the battery for your key fob has been damaged and you're unable to unlock your car. It's a good thing that it's simple to replace the battery and save yourself some money at the dealership.
Press the auxiliary key button located at the back of the keyfob. This will remove the metal auxiliary key and expose slots on both 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 put it away somewhere you won't forget it.
Before you start, make sure that you have a new replacement battery. They can be found at any retailer that sells batteries or at a Mazda dealer close to Winter Garden. The correct battery is essential to make sure that your keyfob functions correctly.
Replace the cap of the battery and then replace the battery. Be careful not to damage the small rubber ring that the battery sits on. Press the two halves together until you hear the click.
How do you reset the Keyless Entry System
The key fob that you have in your Mazda 3 is not only an option for convenience, it's an important security feature. If you lost your key or had it stolen, the car will not start even if you have the spare fob. The key fob must be reprogrammed by the dealer to make it work again. It can be a stressful and expensive ordeal. Therefore, it's best to learn how to reset the system.
To reset the system, disconnect the battery for around 15 minutes. This will remove any remaining electrical current from the computer on board. Then, disconnect both the LF-ECU connector as well as the demand switch connectors. Verify the continuity between the next terminals.
(Image: https://www.thekeylab.co.uk/wp-content/uploads/sb-instagram-feed-images/311170119_2306394586188303_2849487588620745484_nlow.jpg)To program an entirely new key or spare, place it in the slot and turn the ignition to ON. Put the key in for about five seconds and then turn it off. The key's details will be saved to your car's computer and the new fob will be able start your car in the future. You can program up to three fobs, but you should only use one at a time. This stops unauthorized individuals from copying your key and gaining access to your car. You can purchase a new key fob online, however you'll still need to go to a locksmith or dealer in order to cut it and get it programmed.
