How to Add, Change, and Reprogram a mazda car keys 3 Spare Key

If you've dropped your key fob on the floor or it just stopped working, it's always a good idea to have a spare key handy. This article will provide everything you should be aware of changing, adding, and changing the programming of your Mazda 3 key fobs.

Warning: Some keys require programming from an experienced locksmith, whereas others don't. Be sure to only use genuine Mazda replacements for your key fob.

How to Add a Spare Key

If you're not fortunate enough to receive a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one, don't worry -- there's still an option to make another key. You'll need to use a flathead screwdriver and a CR2025 new battery. Once you've got these items and tools, you're ready to open the key fob. First, locate the button that allows you to release the key. The button is on the bottom of the metal part. It's easy to find. When you hit the button, the cover should be removed immediately. Then, you can insert the screwdriver's head into the notch at the top or in 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 five seconds before turning it to OFF. This will add the new key's information to the system that will allow it to start your vehicle in the future.

It's important to note that you can only program up to three keys for your Mazda 3. The most important thing is to have more than two working key fobs, and not be capable of getting your vehicle started. This is a safety measure designed to prevent unauthorised 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 best to be aware of how to program it in the event the original key you had is lost mazda key or stolen. This will stop unauthorised people from taking your car and then starting it. This will work with any mazda 2 Car key replacement. You'll need two keys that work to begin the reprogramming. If you don't own two keys that work then it's best to bring your 2008 mazda 3 key fob to the dealer to have this done.

Begin by stepping into the driver's seat and shutting all doors, with the exception of the one that is open. Set the ignition to ON and then insert the first working key. Then wait five seconds before taking out the key. Repeat with the second key.

After you've programmed your new key, you should have three working keys you can use to start your car in the future. Check each key to make sure that they're operating correctly before taking them off.

It is advisable to purchase an extra 2008 mazda 3 key fob 3 remote, especially if your car is prone to issues. You can buy one online or at your local auto retailer, but make sure to read the reviews prior to purchasing so you can avoid getting a key fob that's not compatible with your vehicle.

How do I change the battery with a spare key?

It's very frustrating to discover that your key fob is dead, and you are unable to unlock your car. Fortunately, it's easy to replace the battery and save some cash at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will detach the key made of metal and reveal a slot on each side of the case. Press the flathead screwdriver into one of these slots. Then, gently take apart the two halves of the case. Once the battery has been fully exposed, remove the case and place it somewhere you will not forget it.

Before you begin, be sure that you have a brand new replacement battery. They can be bought from any store that sells batteries or from a Mazda dealer in Winter Garden. The correct type of battery is crucial to ensure that your keyfob works properly.

Replace the cap on the battery, and then put in the new battery. Be careful not to scratch the small rubber ring that the battery is placed on. Then press the two parts of the key fob together until you hear a click.

How to reset a Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also a security feature. The car will not start if the key is stolen or lost even if you have a spare fob. The key fob has to be reprogrammed by the dealer to make it work again. This could be a costly and time-consuming process therefore it's a great idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will eliminate any residual power from the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. Verify the continuity between the next terminals.

Place the key into the slot and turn the ignition ON. The key should remain in the ignition for around five seconds, and then turn off. The key's information is added to the computer in your car and the new fob will start your vehicle. You can program up to three fobs but you must only use one at one time. This will prevent unauthorized people from stealing your key and getting access to your car. You can buy a new keyfob online, however it will still need to be programmed and cut by an authorized dealer.