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

It's a good idea always to keep an extra key at hand in case you lose the keyfob or it stopped working. This article will cover everything you should learn about changing, adding, and changing your Mazda 3 key fobs.

Note: Some keys require programming from professional locksmiths, while others don't. Use only authentic Mazda replacements to replace your key fob.

How to add a spare key

If you're not lucky enough to find a spare key from the dealership when you buy your Mazda 3 or accidentally break your current key do not fret -- there is still a way to add another key. You'll need an flat-head screwdriver and a new CR2025 battery. Once you've got these items then it's time to open the key fob. Locate the auxiliary key release. It's located on the underside of the metal component and is easy to find. The cover that covers the back should come off when you press the button. Then, you can insert the head of the screwdriver into the notch or space on the top of the metal part and then pull it off.

Insert your spare key or a new one into the slot after removing the secondary key. Turn on the ignition and then wait for around five seconds before turning it to OFF. This will add the new information on the key to the system, allowing it to start your vehicle in the future.

It's important to note that you can only program up to three keys on your mazda locked keys in car 3. The final thing you want is to have more than two functioning key fobs, and not be able to get your car started. This is a security measure designed to stop unauthorized users, such as valet drivers from activating your key and thereby starting your Car Key Shop.

How do I reprogram an unrepaired key

It's a good idea to be aware of how to reprogram an extra key in the event that your original key is lost or stolen. This will prevent unauthorised persons from taking your car and then starting it. This process is compatible with any Mazda, though you'll need two keys working to begin the process of reprogramming. If you don't have two working keys it's recommended to take your Mazda to the dealer to get this done.

Begin by stepping into your driver's seat, and close the door, with the exception for the one that's already opened. Turn the ignition on and then insert the first working key. Wait five seconds before removing the key. Repeat the process with the second key.

Once you've programmed your new key, you'll have three working keys you can use to start your car in the 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, particularly if you're a driver who is prone to losing keys mazda or has other issues with it. You can purchase one online or in your local auto store. Make sure you look up reviews before you purchase to ensure that you don't get the wrong key fob that isn't compatible with your car.

How do I change the battery on a spare key

There's nothing worse than discovering that the battery on your key fob failed and you are unable to unlock your car. It's simple to replace 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 key that is used as an auxiliary key, and expose a slot on both sides of the case. Put the flathead into one of these slots and then gently pry the two halves apart. When the battery is completely exposed, remove it and set aside the case somewhere safe from being lost.

Before you begin, be sure that you have a new replacement battery. They can be bought from any store that sells batteries or from a 2009 mazda 6 key fob dealer in Winter Garden. Choosing the correct battery will ensure that your key fob is working correctly.

Next, put the replacement battery in its place and then replace the cap of the battery. Be careful not to damage the small rubber ring that the battery is placed on. Then, press the two parts of the key fob until you hear the sound of a click.

How to Reset the Keyless Entry System

The key fob inside your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lose your key or had it stolen the car won't start even if you have the spare key fob. The key fob needs to be reset by the dealer to allow it to work again. It's a difficult and costly experience. Therefore, it's advisable to know how to reset the system.

Disconnect the battery from the system for 15 minutes. This will remove any remaining power from the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Check continuity between the following terminals.

Insert the key into the slot, then turn on the ignition. Leave the key in for around five seconds and then switch off. The key information will now be saved to your car'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 a time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a replacement key fob on the internet, but you'll still need to go to a locksmith or dealer in order to get it cut and programmed.