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How to Add, Change, and Reprogram a Mazda 3 Spare Key

Whether you dropped your key fob on the floor or it just stopped working, it's a good idea to have an extra key in your pocket. This article will provide everything you must know about adding, changing, or programming your Mazda 3 key fobs.

A word of warning: some keys require programming by a professional locksmith or dealer, whereas other keys do not. Make sure you use only authentic Mazda replacements to replace your key fob.

How to Add a Spare Key

If you're not fortunate enough to find a spare key from the dealership when you buy your Mazda 3 or accidentally break your current one do not fret -- there's still a way to add another key. To accomplish this, you'll require an inexpensive flathead screwdriver as well as the new CR2025 batteries. Once you have the items and tools, you're ready to open the key fob. Locate the key release auxiliary. It's located under the metal component and is easy to find. The back cover should slide off as soon as you press the button. Next, place the screwdriver's head into the notch or space at the top of the metal component and then pull it off.

Insert the spare or new mazda key key into the slot following the removal of the accessory key. Turn on the ignition and wait for five seconds, and then turn it to off. This will register the new key's information into the system, allowing it to start your car in the future.

It's important to keep in mind that you can only program up to three keys for your Mazda 3. The final thing you want is to have more than two working key fobs and not be in a position to get your vehicle started. This is a security measure designed to prevent unauthorized users, like valet drivers from activating your key and thereby starting your car.

How to Reprogram a Spare Key

It's a smart idea to learn how you can reprogram a spare key in the event that your original key becomes lost or stolen. This will keep unauthorised persons from starting your car, or stealing it. This process is compatible with any mazda 2 key fob however you'll need two keys working to begin the reprogramming. If you don't have two keys that function then it's best to bring your vehicle to a dealer to have this completed.

Start by stepping into driver's position, and close all the doors with the exception of the one that is open. Insert the first working key in the slot, and then set the ignition to ON. Wait five seconds, then take the key out and repeat the process with the second key.

Once you've finished programming your new key, you'll have three keys that you can use to start your car in the future. Test each key to be sure that they're operating correctly before putting them away.

It's a good idea buy an extra Mazda 3 key fob, especially if your car is one who frequently loses their 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 so that you don't get a key fob which isn't compatible with your vehicle.

How to Change the Battery on a Spare Key

It's very frustrating to discover that your key fob has died and you're in a position to not unlock your vehicle. Fortunately, it's easy to replace mazda key fob the battery and save yourself some money at the dealership.

Press the auxiliary key button on the back of the keyfob. This will detach the metal key and reveal an opening on each side of the case. Place the flathead in one of these slots and then gently pry the two halves of the case apart. Once the battery is fully exposed, remove it and place it in a safe place somewhere that you won't forget about it.

Be sure to have an extra battery in place before you begin. These batteries can be purchased at any retailer that sells batteries or from a 2010 Mazda 3 Key fob programming dealer in Winter Garden. The correct battery is crucial to ensure that your key fob functions correctly.

Next, put the replacement key for mazda cx 5 battery in place and replace the cap of the battery. Be careful not damage the rubber ring that holds the battery. Press the two halves together until you hear the click.

How to Reset a Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It's also an important security feature. The car will not start if the key is lost or stolen, even if you've got an extra fob. The key fob should be reset by the dealer to make it work again. This could be a costly and stressful experience, so it's a good idea to learn how to reset the system yourself.

To reset the system, unplug the battery for about 15 minutes. This will take out any remaining electrical power in the on-board computer. Then, disconnect the LF-ECU connector as well as the demand switch connectors. Check for continuity between the terminals.

Place the key into the slot and turn the ignition ON. Switch off the ignition after approximately five minutes. The key's information has been stored in the car's computer and the new fob is able to start your vehicle. You can program up to three fobs, however, you must only use one at a time. This will prevent unauthorized people from stealing your key and getting access to your car. You can purchase a replacement keyfob online, however it still needs to be cut and programmed by a dealer.