How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key on hand in case you lose the keyfob you were using or it was unable to function. This article will show you how to add, alter, and reprogramme your Mazda 3 keyfobs.
Certain keys require programming by an expert locksmith, while others don't. Be sure to only make use of official Mazda replacements for your key fob.
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How do you add a spare key
If you're unable to get a spare key from the dealership when you buy your Mazda 3 or accidentally break your current key but don't worry, there is still a way to add another key. To do this, you'll need a small screwdriver with a flat head and a new CR2025 battery. Once you've got these items and tools, you're ready to open the key fob. First find the key release button for the auxiliary key. It's located under the metal part and is easy to find. The cover that covers the back should come off as soon as you press the button. Next, place the screwdriver's head into the notch or space at the top of the metal part and pry it off.
Insert your new or spare key into the slot after you have removed the secondary key. Switch the ignition on and wait for five seconds, then turn it to OFF. https://www.thekeylab.co.uk/mazda-car-keys/ will allow the system to recognize the new key and begin your vehicle in the future.
You can only program three keys into your Mazda 3. The one thing you don't want is to have more than two functioning key fobs and not being able to get your car started. This is a safeguard to stop unauthorised users from activating your keys and launching your car.
How to Reprogram a Spare Key
It's a smart idea know how to reprogram an extra key in the event that your original key becomes lost or stolen. This will prevent unauthorised persons from taking your car and then starting it. This process should work on any Mazda, though you'll need two keys that work to begin the reprogramming. If you don't own two working keys, it's best to take your vehicle to a dealer to get this completed.
Begin by stepping into your driver's seat, and shutting the door, excluding for the one that's already opened. Place the working key into the slot, then set the ignition to the ON position. Then wait five seconds before taking out 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 placing each key in storage, make sure that it's functioning properly.
You should think about buying a spare Mazda 3 remote, especially if your car is prone to issues. You can purchase one on the internet or at a local automotive store. Make sure to review the reviews before buying to ensure that you don't purchase a key fob which isn't compatible with your car.
How to change the Battery on a spare Key
There's nothing worse than finding that the battery on your key fob gone out and you're not able to unlock your car. It's a good thing that it's simple to replace the battery and save some cash at the dealership.
The first step is to press the auxiliary key button on the back of the key fob. This will release the metal key and reveal two slots on the opposite side of the case. The flathead should be inserted into one of these slots, and then gently pull the two halves of the case apart. Once the battery has been fully exposed, remove the case and place it in a spot where you'll never forget it.
Before you begin, make sure you have a new replacement battery. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. The right type of battery is crucial to ensure that your keyfob works properly.
Replace the cap on the battery, and then install the new battery. Be careful not to scratch the small rubber ring the battery sits on. Press the two halves together until you hear the click.
How do I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It also serves as a security feature. If you lose your key or had it stolen the car won't start even if you've got the spare fob. This is because the key fob has to be reset at the dealership to function properly. This can be a costly and frustrating ordeal It's a good idea to understand how to reset the system yourself.
To reset the system, remove the battery for around 15 minutes. This will eliminate any remaining electricity from the onboard computer. Then, disconnect the LF-ECU connector and the demand switch connectors. After that, test for continuity between the following terminals:
To program the new key or spare, insert it into the slot and turn the ignition to ON. The key should remain in the ignition for about five seconds, then turn off. The key's details will be added to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program as many fobs you would like, but only one should be in use at any particular time. This will prevent unauthorised people from stealing your key and getting access to your vehicle. You can purchase a brand new key fob online, but you'll still need to go to a locksmith or dealer in order to have it cut and programmed.
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