How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have an extra key on hand in case you lose your keyfob, or it has stopped working. This article will explain everything you must be aware of when adding, changing, and programming your Mazda 3 key fobs.
Be aware that some keys require programming from a professional locksmith, while others do not. Only use official Mazda replacements to replace your key fob.
How to add a spare key
You can also add an additional key if you don't have a spare key or in the event that you break your current one. You'll need a flathead screwdriver, and the CR2025 replacement battery. Once you've got these items you need, it's time to open the key fob. Find the key release auxiliary. It's on the underside of the metal part and is easy to find. The cover on the back should fall off the moment you press the button. Then, insert the screwdriver's head in the notch on top or into the space and remove the metal part.
Once the auxiliary key has been removed, insert your new or spare key into the slot. Set the ignition to ON, and wait for around 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 to your Mazda 3. You don't want to have to use more than two keys to start your vehicle. This is a precautionary measure to stop anyone who is not authorized from activating your keys and launching your car.
How do you reprogram an unrepaired key?
It's a good idea to learn how you can reprogram a spare key in the event that your original key becomes lost or stolen. This will stop unauthorized persons from starting your vehicle or stealing it. This should work with any Mazda. You will require two keys that are functioning to start the reprogramming process. If you don't have two working keys, you'll need take your vehicle to a dealership to have it done.
Begin by stepping into replacement mazda 3 key , and shutting all doors, with the exception of the one that is open. Insert the first working key into the slot, and then turn the ignition to ON. Then wait five seconds before taking out the key. Repeat the process with the second key.
After you've programmed your new key, you should have three keys that you can use to start your car in the future. Before placing each key in storage, make sure it's working properly.
It is advisable to purchase an extra Mazda 3 remote, especially in the event that your vehicle is prone to issues. You can buy one online or at a local automotive store, but make sure to read the reviews prior to purchasing so you aren't buying a key fob that's not compatible with your vehicle.
How to Change the Battery on a spare key
There's nothing worse than discovering that the battery on your key fob gone out and you're not able to unlock your car. It's easy to change the battery yourself and save money at the dealership.
Press the auxiliary key button at the back of the keyfob. This will take out the metal key auxiliary to reveal two slots on the sides of the case. Press the flathead screwdriver into one of these slots and then gently remove the two sides of the case. Once the battery is fully exposed, take it out and place the case somewhere that you won't forget about it.
Be sure to have an additional battery before you begin. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. Using the correct type of battery will ensure that your key fob works correctly.
Replace the cap of the battery and then replace the battery. Be careful not to damage the rubber ring on which the battery rests. The two halves should be pressed together until you hear a click.
How can I reset the Keyless Entry System
The key fob that you have in your Mazda 3 is not only an extra convenience, but also an important security feature. If you lost your key or had it stolen the car won't start even if you have the spare fob. This is because the key fob needs to be reprogrammed by the dealership in order to work again. This can be a costly and stressful experience It's a good idea to learn how to reset the system yourself.
To reset the system, disconnect the battery for approximately 15 minutes. This will eliminate any remaining electricity in the on-board computer. Then, disconnect both the LF-ECU and demand switch connectors. After that, test for continuity between the following terminals:
To program an entirely new key or spare, insert it into the slot and set the ignition to ON. The key should remain in the ignition for around five seconds, and then switch off. The information from the key 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 a time. This will keep unauthorised individuals from stealing your key and getting access to your vehicle. You can purchase a new keyfob on the internet, but it'll still need to be cut and programmed by an authorized dealer.