How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the floor or it stopped working, it's always recommended to keep an extra key in your pocket. This article will go over everything you need to be aware of when adding, changing, and changing the programming of your Mazda 3 key fobs.
Warning: Some keys require programming from an experienced locksmith, whereas others do not. Be sure to only use genuine Mazda replacements for your key fob.
How do you add an additional key
You can also add another key in the event that you don't have a spare key available or if you accidentally break the one you already have. You'll need to use an flat-head screwdriver and an CR2025 battery. Once you've got the tools, it is time to open the key fob. First, locate the key release button for the auxiliary key. It's located underneath the metal component and is easy to locate. The cover that covers the back should come off as soon as you press the button. Then, insert the screwdriver's tip into the notch at the top or the space, and pry the metal part off.
After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition to ON and wait about five seconds before turning it to off. This will register the new information on the key to the system that will allow it to start your car in the future.
You can only program three keys into your Mazda 3. You don't want to use more than two key fobs to start your car. This is a security precaution designed to prevent unauthorised users, like valet drivers from activating your key and thereby starting your car.
How to Reprogram a Spare Key
It's smart to know how you can reprogram a spare key in the event that the original key is lost or stolen. This will stop unauthorised people from taking your car and then starting it. This method should work on any Mazda however you'll need two keys that work to begin the reprogramming process. If you don't have two working keys, you'll have to take your vehicle to a dealership to have it done.
Begin by putting yourself in the driver's seat and shutting the door, excluding for the one that's open. Insert the first working key into the slot, and then set the ignition to ON. After five seconds, remove the key. Repeat with the second key.
After you've programmed your new key, you should have three working keys that you can use to start your car in the future. Before placing each key in storage, make sure that it's functioning properly.
It's a good idea purchase an extra Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can purchase one on the internet or in your local automotive store. Make sure to look up reviews before you purchase so that you don't get the wrong key fob that isn't compatible with your car.
How to change the Battery on a spare Key
There's nothing more frustrating than finding that the battery in your key fob has failed and you are unable to unlock your car. It's not a problem to replace the battery and save yourself some money at the dealer.
The first step is to press the auxiliary button on the back of the key fob. This will take out the key's metal cover and reveal the slots on both sides of the case. Press the flathead into one of these slots and then gently push the two halves of the case apart. Once the battery is fully exposed, remove it and place the case somewhere you won't forget it.
Be sure to have a replacement battery prior to starting. These batteries can be purchased at any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is crucial to make sure that your keyfob functions properly.
Replace the cap on the battery, and then install the new battery. Be careful not to damage the small rubber ring that the battery rests on. Finally, press the two parts of the key fob until you hear the sound of clicking.
How do you reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It also serves as an important security feature. The car will not start if the key is lost or stolen, even if you've got an extra key fob. The key fob should be reprogrammed by a dealer to enable it to function again. This can be a painful and costly ordeal. Therefore, it's recommended to learn how you can reset the system.
Remove the battery from the system for 15 minutes. This will erase any residual electricity in the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Verify that mazda key replacement are in good order between the 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 about five minutes. The key's information will be saved to your car's computer and the new fob will be able start your vehicle in the future. You can program up to three fobs however, you should only use one at a time. This will prevent unauthorized people from stealing your key and gaining access to your car. You can buy a new keyfob on the internet, but it must be cut and programmed by a dealer.