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

It's a good idea to have an extra key in your pocket, whether you dropped your keyfob, or it has stopped working. This article will provide everything you need to be aware of when adding, changing, or changing your Mazda 3 key fobs.

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

How to add a spare key

You can also add a second key if you don't have a spare key or if you accidentally break the one you already have. To do this, you'll need an inexpensive flathead screwdriver as well as an updated CR2025 battery. Once you've got these items you can remove the key fob and change the battery. First find the auxiliary key release button. The button is on the bottom of the metal part. It's easy to find. Once you press the button, the back cover should slide off immediately. Then, place the screwdriver head into the notch at the top or the space, and take the metal part away.

After the auxiliary keys are removed, insert your new or spare key into the slot. Switch the ignition on and wait for about five seconds before turning it to off. This will register the new key's information into the system and allow it to start your car in the future.

You can only program three keys on your Mazda 3. The most important thing is to have more than two working key fobs and not being in a position to get your car started. This is a safety measure designed to prevent unauthorized users, such as valet drivers from activating your key and starting your car.

How to Reprogram a spare key

If you have a spare key it's best to know how to program it in the event the original key you had is lost or stolen. This will prevent unauthorized people from starting your car or stealing it. This should work with any Mazda. You will need two keys that are working to start the reprogramming process. If you don't have two keys that work it's recommended to take your car to a dealer to have this completed.

Begin by stepping into the driver's position and close all the doors, except the one that is open. Put the first working key into the slot, and then set the ignition to ON. Wait five seconds before removing the key. Repeat with the second key.

Once you've programmed your new key, you'll have three working keys that you can use to start your car in the future. Before saving each key, be sure it's working properly.

You should think about buying a spare mazda key 3 remote, especially if your car is prone to problems. You can purchase one online or at your local auto store. Be sure to review the reviews before buying so that you don't get a key fob which isn't compatible with your car.

How do you change the battery on a spare key?

It's very frustrating to discover that the key fob you used to use has gone out, and you are in a position to not unlock your vehicle. Luckily, it's easy to replace the battery and save some cash at the dealership.

The first step is to press the auxiliary key button that is located on the back of the key fob. This will take out 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 remove the two parts of the case. When the battery is completely exposed, take it out and put it away somewhere that you won't forget about it.

Be sure to have a new battery ready before you begin. You can purchase them at any store that sells batteries or at a Mazda dealer near Winter Garden. The right kind of battery is crucial to make sure that your keyfob functions correctly.

Then, place the new battery in its place and then replace the battery cap. Be careful not to scratch the rubber ring on which the battery rests. The two halves should be pressed together until you hear a click.

How to reset a Keyless Entry System

The mazda 6 key 3 key fob is not just a convenient feature. It also serves as an important security feature. The car won't start if your key is stolen or lost even if you have a spare key fob. The key fob needs to be reprogrammed by the dealer to make it work again. This can be a painful and costly ordeal. Therefore, it's recommended to know how to reset the system.

Remove the battery from the system for 15 minutes. This will eliminate any remaining electrical current from the computer on board. Then, 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. Turn off the ignition after approximately five seconds. The key's details will be added to the vehicle's computer, and the new fob will be able to start your car in the future. You can program up to three fobs, but you should only use one at a time. This will stop unauthorized individuals from stealing your key and getting access to your vehicle. You can purchase a replacement keyfob from the internet, however it will still need to be cut and programmed by an authorized dealer.