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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have an extra key at hand no matter if you've dropped your keyfob or it stopped working. This article will teach you how to add, change and re-programme your Mazda 3 keyfobs.
Warning: Some keys require programming by an expert locksmith, while others do not. Make sure you use only 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 available or if you accidentally break the one you have. You'll need to use a flathead screwdriver, and the CR2025 replacement battery. Once you have these items you can open the key fob to change the battery. Find the key release auxiliary. It's located on the underside of the metal component and is easy to find. Once you hit the button, the cover should slide off immediately. Then, insert the head of the screwdriver into the notch or space at the top of the metal part and pull it off.
Insert your spare key or a new one into the slot following the removal of the auxiliary key. Switch the ignition on and wait for approximately five seconds, and then turn it to off. This will allow the system to recognize the new key and start your vehicle in the future.
It's important to know that you can only program up to three keys on your Mazda 3. You don't want to use more than two key fobs to start your vehicle. This is a security precaution designed to prevent unauthorized users, such as valet drivers, from activating your key and thereby launching your vehicle.
How to Reprogram a Spare Key
It's a smart idea be aware of how to reprogram a spare key in the event that your original key is lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This should work with any Mazda. You'll need two keys that work to start the reprogramming process. If you don't have two functioning keys, you'll need bring your vehicle to the dealership to have it done.
Begin by getting in your driver's seat, and shutting the door, excluding for the one that's already opened. Turn the ignition on and insert the initial working key. Then wait five seconds before taking out the key. Repeat the process with the second key.
Once you've programmed your new key, you should have three working keys that you can use to start your vehicle in the future. Before storing each key, make sure it's functioning correctly.
It's a good idea to purchase an extra Mazda 3 key fob, especially if you're someone who often loses your key or has other issues with it. You can purchase one online or in your local automotive store. Make sure to go through reviews prior to purchasing to ensure you don't buy one that's not compatible with your car.
How to change the Battery on a spare Key
It's very frustrating to discover that your key fob has died, and you are not able to unlock your car. Luckily, it's easy to replace the battery and save yourself some cash at the dealership.
Press the auxiliary key button on the back of the keyfob. This will remove the metal auxiliary key and expose an opening on both sides of the case. Press the flathead screwdriver into one of these slots, and gently break the two parts of the case. When the battery is completely exposed, take it out and place the case in a place where you will not forget it.
Be sure to have an additional battery before you start. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. The right kind of battery is crucial to ensure that your keyfob is working correctly.
Next, put the replacement battery in the correct place and replace the battery cap. Be careful not damage the rubber ring on which the battery rests. The two halves should be pressed together until you can hear the click.
How can I reset the Keyless Entry System
The mazda cx 9 key fob 3 key fob is not just a piece of equipment for convenience. It also serves as a security feature. The car will not start if your key is stolen or lost, even if you've got an extra fob. The key fob has to be reprogrammed by a dealer to enable it to function again. It can be a stressful and costly process. So, it's best to learn how to reset the system.
To reset the system, remove the battery for around 15 minutes. This will eliminate any residual electrical current from the computer on board. Next, disconnect both the LF-ECU and demand switch connectors. Check for continuity between the following terminals:
To program an entirely new key or spare, insert it into the slot and turn the ignition to ON. Turn off the ignition after approximately five seconds. The information from the key 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 up to three fobs however, you must only use one at each time. This will stop unauthorized individuals from stealing your keys and getting access to your vehicle. You can purchase a new key fob online, but you'll still need to visit an expert locksmith or dealer to get it cut and programmed.