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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to keep an extra key at hand in case you lose your keyfob, or it was unable to function. This article will explain everything you must learn about the process of adding, changing, and changing the programming of your Mazda 3 key fobs.
Be aware that some keys require programming from an expert locksmith, while others do not. Make sure to use official Mazda replacements for your key fob.
How to add a spare key
If you're not fortunate 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 still a way to add another key. To do this, you'll need a small screwdriver with a flat head and an CR2025 battery that's new. Once you've got these tools and are ready to open the key fob and swap the battery. Find the auxiliary key release. It's located underneath the metal portion and is easy to locate. The cover that covers the back should come off as soon as you press the button. Then, you can insert the screwdriver's head into the notch or spacing at the top of the metal component and pull it off.
Insert the spare or new key into the slot after you have removed the accessory key. Set the ignition to ON, and wait about five seconds before turning it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.
It is only possible to program three keys on your Mazda 3. The last thing you 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 designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and thereby starting your car.
How do I reprogram a spare key?
If you have a spare key, it's a good idea to know how to program it in the event your original key gets stolen or lost. This will stop unauthorized persons from starting your car, or stealing it. This process should work on any Mazda however you'll need two keys working to begin the process of reprogramming. If you don't have two keys that function then it's best to bring your mazda key replacement to a dealer to have this completed.
Begin by putting yourself in the driver's seat, and close the door, except for the one that's already opened. Place the working key in the slot, then turn the ignition to the ON position. After five seconds, remove the key. Repeat with the second key.
Once you've programmed your new key, you'll have three 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 buy a spare mazda Key replacement 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. You can find one online or at your local automobile store, but make sure to read the reviews before buying so that you can avoid purchasing a key fob that's not compatible with your vehicle.
How to change the battery using a spare key
There's nothing worse than discovering that the battery for your key fob has failed and you are unable to unlock your vehicle. Luckily, it's easy to replace the battery and save some money at the dealer.
Press the auxiliary button on the back of the keyfob. This will detach the key's metal cover and reveal an opening on each side of the case. Place the flathead in one of these slots, and gently pry the two halves apart. Once the battery is fully exposed, take it out of the case and place it somewhere that you will not forget about it.
Make sure you have a replacement battery prior to starting. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. Using the right type of battery will ensure that your key fob is working properly.
Replace the cap on the battery and then install the new battery. Be careful not to scratch the small rubber ring the battery rests on. The two halves should be pressed together until you can hear the click.
How can I reset the Keyless Entry System
The key fob on your Mazda 3 is not only an added convenience, but it's also an important security feature. The car will not start if the key is stolen or lost even if you have a spare key fob. This is because the fob that you have to be reprogrammed at the dealership to work properly. This can be a costly and time-consuming process It's a good idea to learn how to reset the system yourself.
To reset the system, remove the battery for around 15 minutes. This will erase any residual electrical current from the computer on board. Then, disconnect the LF-ECU connector and the demand switch connectors. Verify that the connections are in good order between the terminals.
To program a new key or a spare, place it in the slot and set the ignition to ON. Switch off the ignition after approximately five seconds. The key's information has been stored in the car's computer and the new fob can start your car. You can program up to three fobs but you should only use one at one time. This will keep unauthorised individuals from stealing your keys and gaining access to your vehicle. You can purchase a new key fob online, however you'll still need to go to an expert locksmith or dealer to get it cut and programmed.