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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to keep a spare key on hand in case you lose your keyfob, or it stopped working. This article will teach you how to add, change and re-programme your Mazda 3 keyfobs.
Be aware that some keys require programming by an expert locksmith, while others don't. Be sure to only use official Mazda replacements for your key fob.
How do I add a spare key
If you're not lucky enough to receive a spare keys from the dealership when you buy your Mazda 3 or accidentally break the one you have do not fret -- there is still a way to add another key. To do this, you'll need an incredibly small screwdriver, a flathead screwdriver, and a new CR2025 battery. Once you have these items then it's time to open the key fob to change the battery. First find the key release button for the auxiliary key. It's on the underside of the metal portion and is easy to locate. The cover on the back should fall off the moment you press the button. Then, insert the head of the screwdriver into the notch, or the spacing at the top of the metal part and pry it off.
Once the auxiliary key has been removed, insert your new or spare key into the slot. Set the ignition ON and then wait for around five seconds, and then turn it to off. This will add the new information on the key to the system which will allow it to start your vehicle in the future.
It is important to remember that you can only program up to three keys for your Mazda 3. The one thing you don't want is to have more than two functioning key fobs and not be in a position to get your vehicle started. This is a safety measure designed to prevent unauthorized users, such as valet drivers, from activating your key and thereby launching your vehicle.
How do I reprogram a spare key
It's a smart idea to learn how you can reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This process should work on any Mazda, though you'll need two working keys to begin the reprogramming process. If you don't have the two working keys, you'll have to bring your car to the dealership to get it done.
Begin by stepping into the driver's seat, close all the doors, except the one that is open. Put the first working key into the slot, then set the ignition to ON. After five seconds, remove the key. Repeat the process with the second key.
Once you've finished programming your new key, you should have three working keys that you can use to start your vehicle in the future. Before saving each key, be sure that it's working correctly.
It's a good idea to purchase an extra Mazda 3 key fob, especially if you're someone who frequently loses their key or has other issues with it. You can purchase one online or at your local auto store. Make sure you review the reviews before buying to ensure you don't buy one that's not compatible with your car.
How do I change the battery on a spare key
There's nothing more frustrating than discovering that the battery in your key fob has 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 dealership.
Press the auxiliary key button located at the back of the keyfob. This will release the key's metal cover and reveal an opening on each side of the case. Put the flathead screwdriver in one of these slots and gently take apart the two sides of the case. Once the battery is fully exposed, take it out of the case and put it in a place where you won't forget about it.
Be sure to have an extra battery in place prior to beginning. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob operates correctly.
Next, put the replacement battery in the correct place and replace the battery cap. Be careful not to damage the small rubber ring the battery is placed on. Finally press the two parts of the key fob until you hear a click.
How to Reset a Keyless Entry System
The Mazda 3 key fob is not just a piece of equipment for convenience. It also serves as a security measure. If you lose your key or had it stolen, the car will not start even if it has the spare key fob. This is because the fob that you have to be reprogrammed by the dealership to function properly. It can be a frustrating and expensive ordeal. Therefore, it's best to know how to reset the system.
Disconnect the battery from the system for 15 minutes. This will remove any remaining electrical current from the computer on board. Then, disconnect the LF ECU and demand switch connectors. Verify the continuity between the next terminals.
Insert the key into the slot, then turn on the ignition. Switch off the ignition after about five minutes. mazda 3 car key G28 Car Keys 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 up to three fobs but you should only use one at one time. This will prevent unauthorised people from stealing your keys and gaining access to your vehicle. You can buy a new keyfob online, but it will still need to be programmed and cut by a dealer.