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How to Add, Change, and Reprogram a mazda key 3 Spare Key

It's a good idea always to keep an extra key at hand no matter if you've dropped your keyfob or it was unable to function. This article will explain how to add, alter, and reprogramme your Mazda 3 keyfobs.

Note: Some keys require programming by a professional locksmith, while others do not. Make sure to use official Mazda replacements for your key fob.

How do you add a spare key

You can also add an additional key in case you don't have a spare key available or if you accidentally break your current one. To accomplish this, you'll need an incredibly small screwdriver, a flathead screwdriver, and a new CR2025 battery. Once you've got the tools then it's time to open the key fob. First find the key release button for the auxiliary key. It's located beneath the metal portion. It's easy to find. The cover that covers the back should come off as soon as you press the button. Then, insert the screwdriver's head into the notch, or the spacing on the top of the metal component and pull it off.

Once the auxiliary key has been removed, insert the new or spare key into the slot. Turn the ignition on and then wait for around five seconds, then turn it to OFF. This will register the new key's information to the system and allow it to start your car in the future.

You can only program three keys into your Mazda 6 Key 3. The final thing you want is to have more than two functioning key fobs but not be capable of getting your vehicle started. This is a precautionary measure to stop unauthorized users from activating your key fobs and starting your vehicle.

How to Reprogram a spare key

It's a smart idea to be aware of 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 stealing it. This method should work on any Mazda however you'll need two working keys to start the reprogramming. If you don't own two keys that work it's recommended to take your vehicle to a dealer to have this completed.

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

After you've completed programming your new key, you should have three keys that you can use to start your vehicle in the future. Test each key to make sure that they're functioning properly before throwing them away.

You should consider buying an extra Mazda 3 remote, especially in cases where your car is prone to issues. You can find one online or at your local automotive store, but be sure to read reviews before purchasing so that you aren't buying the wrong key fob compatible with your vehicle.

How to Change the Battery on a spare Key

It's awful to discover that your key fob is dead and you're unable to unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will detach the key's metal cover and reveal two slots on the opposite side 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 it in a safe place somewhere that you won't forget about it.

Be sure to bring a replacement battery prior to beginning. They can be found at any store that stocks batteries or at an Mazda dealer near Winter Garden. Choosing the right battery will ensure that your key fob operates correctly.

Next, put the replacement battery in the correct place and replace the cap on the battery. Be careful not to scratch the rubber ring on which the battery rests. Press the two halves together until you can hear the click.

How to reset the system's Keyless Entry System

The key fob inside your mazda 3 spare key 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 Mazda 6 key lost, even if you've got a spare key fob. This is because the fob that you have to be reprogrammed by the dealership in order to work properly. This could be a costly and time-consuming process therefore it's a great idea to understand how to reset the system yourself.

To reset the system, unplug the battery for approximately 15 minutes. This will clear any residual electricity from the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:

To program the new key or spare, insert it into the slot and turn the ignition to ON. Stop the ignition after approximately five minutes. The key's details will be transferred to your vehicle's computer, and the new fob will be able start your car in the future. You can program as many fobs as you would like however only one must be used at any certain time. This will prevent unauthorized people from stealing your key and gaining access to your car. You can purchase a replacement key fob on the internet, but you'll still need to visit an authorized locksmith or dealer to get it cut and programmed.