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

It's a good idea always to keep a spare key on hand no matter if you've dropped the keyfob or it was unable to function. This article will explain everything you need to be aware of changing, adding, and programming your Mazda 3 key fobs.

A word of caution: some keys require programming by a professional locksmith or dealer, whereas others don't. Make sure to make use of official mazda car key replacement replacements for your key fob.

How do you add an extra key

If you're not lucky enough to receive a spare key from the dealership when you buy your Mazda 3 or accidentally break your current one, don't worry -- there's still the option of adding another key. To accomplish this, you'll need an inexpensive flathead screwdriver as well as a new CR2025 battery. Once you have the items, it is time to open the key fob. Find the key release auxiliary. The button is on the underside of the metal portion. It's easy to locate. The cover that covers the back should come off the moment you press the button. Then, you can insert the screwdriver's head into the notch or space on the top of the metal component and pull it off.

Once 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 allow the system to recognize the new key and begin your vehicle in the future.

It is only possible to program three keys in your Mazda 3. You don't want to have to utilize more than two keys to start your vehicle. This is a security measure designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and starting your vehicle.

How to reprogram a spare key

If you have a spare key it's best to know how to program it if your original key gets stolen or lost. This will keep unauthorized people from stealing your car and starting it. This method should work on any mazda key replacement however, you'll require two working keys to begin the reprogramming process. If you don't have two working keys, you'll need to take your vehicle to a dealership to have it done.

Begin by stepping into your driver's seat and closing the door, except for the one that's open. Set the ignition to ON and insert the first working key. After five seconds, remove the key. Repeat with the second key.

After you've programmed your new key, you'll have three working keys that you can use to start your vehicle in the future. Before placing each key in storage, make sure that it's functioning properly.

It is advisable to purchase an extra Mazda 3 remote, especially if your car is prone to issues. You can purchase one online or at your local auto store. Be sure to review the reviews before buying to ensure you don't buy an item that isn't compatible with your car.

How do I change the battery with a spare key?

It's awful to discover that your key fob has died, and you are in a position to not unlock your car. It's easy to change the battery yourself and save money at the dealer.

The first step is to press the auxiliary key button on the back of the key fob. This will release the key from the metal and reveal an opening on each side of the case. Use the screwdriver's flathead to push it into one of these slots and gently pry apart the two sides of the case. After the battery is fully exposed, remove the case and put it in a spot where you'll never forget about it.

Be sure to have a new battery ready prior to beginning. They are available at any retailer that sells batteries or at a Mazda dealer near Winter Garden. Choosing the correct battery will ensure that your key fob functions correctly.

Then, place the new battery in place and replace the cap of the battery. Be careful not damage the rubber ring that holds the battery. Finally, press the two halves of the key fob until you hear a click.

How to reset a Keyless Entry System

The key fob inside your mazda key fob replacement (click the following article) 3 is not only an option for convenience, it's an important security feature. The car will not start if the key is lost or stolen even if you have a spare fob. The key fob should be reprogrammed by the dealer to enable it to function again. This can be an expensive and frustrating experience, so it's a good idea to understand how to reset the system yourself.

To reset the system, disconnect the battery for 15 minutes. This will remove any remaining electric current from the onboard computer. Then, disconnect both LF-ECU connector as well as the demand switch connectors. Check for continuity between the terminals.

Put the key in the slot, then switch the ignition on. Leave the key in for about five seconds and then turn off. The key's information has been added to the vehicle's computer and the new fob is able to start your vehicle. You can program up to three fobs but you must only use one at one time. This will stop unauthorized individuals from stealing your keys and getting access to your vehicle. You can purchase a replacement keyfob on the internet, but it still needs to be cut and programmed by an authorized dealer.