How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it just stopped working, it's an excellent idea to keep a spare key on hand. This article will explain everything you must know about adding, changing, or programming your Mazda 3 key fobs.
A word of warning Certain keys require programming by a professional locksmith or dealer, whereas other keys don't. Use only genuine Mazda replacements to replace your key fob.
How do you add an extra key
You can also add another key in the event that you don't have a spare key available or if you accidentally break your current one. To accomplish this, you'll need a small screwdriver with a flat head and an updated CR2025 battery. Once you've got these items then it's time to open up the key fob and change the battery. First find the key release button for the auxiliary key. It's located underneath the metal part and is easy to locate. Once you hit the button, the back cover should be removed immediately. Then, put the screwdriver's tip into the notch on top or the space, and pull the metal piece off.
After the auxiliary keys are removed, insert your new or spare key into the slot. Set the ignition to ON, and wait for five seconds before turning it to OFF. This will register the new key's information to the system which will allow it to start your car in the future.
You can only program three keys to your Mazda 3. You don't want to have to utilize more than two keys to start your car. This is a security measure designed to prevent unauthorized users, such as valet drivers from activating your key and starting your vehicle.
How to reprogram a spare key
If you have a spare key, it's a good idea be aware of how to reprogram it in case your original key is stolen or lost. This will stop unauthorised people from stealing your car and starting it. This procedure should work with any Mazda but you'll need two keys that work to begin the reprogramming. If you don't own two keys that function it's recommended to take your Mazda to the dealer to have this completed.
Begin by getting in your driver's seat, and close the door, with the exception for the one that's been opened. Place the working key into the slot, and then turn the ignition to ON. Then wait five seconds before taking out the key. Repeat with the second key.
Once lost mazda 3 key 've programmed your new key, you should have three working keys you can use to start your vehicle in the future. Before placing each key in storage, make sure it's working properly.
It's a good idea buy a spare Mazda 3 key fob, especially if you're a driver who is prone to losing keys or has other issues with it. You can purchase one online or in your local automotive store. Be sure to review the reviews before buying to ensure that you don't get one that's not compatible with your car.
How to Change the Battery on a Spare Key
There's nothing more frustrating than discovering that the battery in your key fob has gone out and you're not able to unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.
The first step is to press the auxiliary button on the back of the key fob. This will remove the metal key auxiliary and reveal two slots on the sides of the case. Press the flathead into one of these slots, and gently pry the two halves of the case apart. Once the battery is fully exposed, remove it and set aside the case somewhere that you won't forget about it.
Before you start, make sure you have a brand new replacement battery. You can find these at any store that stocks batteries or at an Mazda dealer near Winter Garden. The correct type of battery is crucial to ensure that your keyfob is working correctly.
Replace the battery cap and then put in the new battery. Be careful not to damage the small rubber ring that the battery sits on. Then, press the two halves of the key fob together until you hear a click.
How do you reset the Keyless Entry System
The key fob in your Mazda 3 is not only an option for convenience, it's an important security feature. If you lose your key, or have it stolen the car will not start, even if you have the spare fob. The key fob should be reset by the dealer to allow it to work again. This can be a costly and stressful experience and it's a good idea to learn how to reset the system yourself.
Disconnect the battery from the system for 15 minutes. This will clear any residual power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Check continuity between the following terminals.
To program a new key, or a spare, place it in the slot and turn the ignition to ON. Leave the key in for about five seconds, then turn off. The key's information will be added 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 however, you should only use one at each time. This will stop unauthorized individuals from stealing your keys and gaining access to your vehicle. You can buy a new key fob online, however you'll still need to go to an expert locksmith or dealer to get it cut and programmed.