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How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it stopped working, it's always a good idea to have a spare key on hand. This article will go over everything you should be aware of when adding, changing, or programming your Mazda 3 key fobs.
A word of caution Certain keys need to be programmed by a locksmith professional or dealer, whereas others do not. Make sure to use official Mazda replacements for your key fob.
How do I add an extra key
If you're not lucky enough to find a spare key from the dealer when you buy your Mazda 3 or accidentally break the one you have do not fret -- there's a way to add another key. To accomplish this, you'll need an incredibly small screwdriver, a flathead screwdriver, and a new CR2025 battery. Once you've got these items, it is time to open the key fob. First, locate the key release button for the auxiliary key. It's located under the metal piece and is easy to locate. The cover that covers the back should come off the moment you press the button. Then, insert the screwdriver's head into the notch on top or into the space and pull the metal piece off.
After the auxiliary key has been removed, insert the new or spare key into the slot. Turn on the ignition and wait for approximately five seconds before turning it to off. This will register 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. You don't want to utilize more than two key fobs in order to start your car. This is a security measure designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and starting your vehicle.
How to Reprogram a Spare Key
It's a good idea to learn how you can reprogram an extra key in the event that your original key gets lost or stolen. This will stop unauthorised people from starting your car, or stealing it. This procedure should work with any Mazda, though you'll need two working keys to start the reprogramming process. If you don't own two keys that function then it's best to bring your Mazda to a dealer to have this done.
Start by getting into the driver's seat, shutting all doors, with the exception of the one that is open. Set the ignition to ON and insert the initial working key. Wait for five seconds, then take the key out and repeat with the second working 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. Before storing each key, make sure it's working properly.
You should think about purchasing an extra Mazda 3 remote, especially in cases where your car is prone to issues. You can buy one online or in your local automotive store. Make sure to go through reviews prior to purchasing to ensure that you don't purchase an item that isn't compatible with your vehicle.
How to Change the Battery on a spare Key
It's a nightmare to discover that your key fob has failed, and you are in a position to not unlock your vehicle. It's a good thing that it's simple to replace the battery and save some money at the dealer.
The first step is to press the auxiliary key button that is located on the back of the key fob. This will remove the metal auxiliary key and expose a slot on both sides of the case. Put the flathead into one of these slots and then gently push the two halves of the case apart. Once the battery has been fully exposed, remove the case and place it somewhere you will not forget it.
Be sure to have a replacement battery prior to beginning. These batteries can be purchased at any store that sells batteries or from a Mazda dealer in Winter Garden. Choosing the right battery will ensure that your key fob is working effectively.
Next, put the replacement battery in the correct place and replace the battery cap. Be careful not to damage the rubber ring that holds the battery. The two halves should be pressed together until you hear a click.
How do I reset the Keyless Entry System
The key fob on your Mazda 3 is not only a convenience, it's also an important security feature. If you lose your key, or have it stolen the car won't start even if you have the spare key fob. This is because the fob that you have to be reprogrammed by the dealership in order to work once more. This can be a painful and costly ordeal. So, it's best to learn how to reset the system.
To reset the system, disconnect the battery for approximately 15 minutes. This will clear any residual electric current from the onboard computer. Next, disconnect the LF-ECU and demand switch connectors. After that, test for continuity between the following terminals:
To program a new key or a spare, insert it into the slot and set the ignition to ON. Switch off the ignition after about five minutes. The key's details are now added to the vehicle's computer and the new fob is able to start your car. You can program any number of fobs you want however only one should be utilized at any certain time. mazda key fobs will prevent unauthorised people from stealing your key and gaining access to your car. You can buy a new key fob online, however you'll need to visit a locksmith or dealer in order to have it cut and programmed.