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

If you've dropped your key fob on the floor or it simply stopped working, it's always best to have an extra key in your pocket. This article will go over everything you should be aware of changing, adding, and changing your Mazda 3 key fobs.

A word of caution Certain keys need to be programmed by a professional locksmith or dealer, while other keys do not. Make sure you use only genuine Mazda replacements to replace your key fob.

How to add a spare key

If you're not lucky enough to receive a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one but don't worry, there's the option of adding another key. You'll need to use a flathead screwdriver and the CR2025 replacement battery. Once you have the items then it's time to open the key fob. First, locate the button that allows you to release the key. The button is located beneath the metal part. It's easy to find. The cover on the back should fall off as soon as you press the button. Then, you can insert the screwdriver head into the notch on top or the space, and pull the metal piece off.

Once the auxiliary key has been removed, insert your new or spare key into the slot. Turn the ignition on and wait for approximately five seconds, 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 on your Mazda 3. The last 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 precaution designed to stop unauthorized users, like valet drivers from activating your key and thereby launching your vehicle.

How do you reprogram an unrepaired key?

It's a smart idea to know how you can reprogram an extra key in the event that your original key becomes lost or stolen. This will keep unauthorized people from getting into your car and causing damage to it. This will work with any Mazda. You'll require two keys that are working to begin the reprogramming process. If you don't own two working keys then it's best to bring your mazda key fob to a dealer to get this done.

Begin by putting yourself in the driver's seat, and shutting the door, excluding for the one that's open. Place the working key in the slot, and then set the ignition to the ON position. For five seconds, take the key out and repeat the procedure with the second working key.

Once you've completed programming your new key you should have 3 keys that will start your car in the near future. Before placing each key in storage, make sure that it's functioning properly.

It's a good idea to buy an extra Mazda 3 key fob, especially if your car is one who has a tendency to lose their keys or has other issues with it. You can purchase one online or in your local automotive store. Make sure you review the reviews before buying to ensure that you don't get the wrong key fob that isn't compatible with your vehicle.

How do I change the battery on a spare key?

It's depressing to find out that your key fob has failed and you're in a position to not unlock your car. It's easy to replace the battery yourself and save money at the dealership.

The first step is to press the auxiliary key button located on the back of the key fob. This will take out the key from the metal and reveal an opening on each side of the case. Insert the flathead screwdriver into one of these slots and mazda 3 Key gently remove the two halves of the case. When the battery is completely exposed, remove it and put it away in a place where you will not forget it.

Be sure to have a replacement battery prior to starting. You can find these at any store that sells batteries or at an mazda key fobs dealer near Winter Garden. Choosing the right battery will ensure that your key fob is working properly.

Replace the cap on the battery, and then install the new battery. Be careful not damage the rubber ring that holds the battery. Then, press the two halves of the key fob together until you hear the sound of clicking.

How do I 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 your key is lost or stolen, even if you've got an extra fob. This is because the key fob has to be reprogrammed by the dealership in order to work again. This can be a costly and time-consuming process therefore it's a great idea to understand how to reset the system yourself.

To reset the system, remove the battery for about 15 minutes. This will take out any remaining electrical power in the on-board computer. Then, mazda 3 key disconnect the LF -ECU and demand switch connectors. Verify the continuity between the next terminals.

To program a new key or a spare, insert it into the slot and turn the ignition to ON. The ignition should be turned off after approximately five minutes. The key's details are now transferred to the computer of your vehicle and the new fob will start your vehicle. You can program any number of fobs you want however only one must be used at a specific time. This stops unauthorized individuals from copying the key and getting ahold of your car. You can purchase a brand new keyfob on the internet, but it'll still need to be cut and programmed by an authorized dealer.