Why No One Cares About Mazda 6 Key How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to keep an extra key in your pocket in case you lose your keyfob or it has stopped working. This article will explain how to add, alter and re-programme your Mazda 3 keyfobs.

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

How do you add an extra key

You can also add an additional key if you don't have a spare key, or in the event that you break your current one. You'll need to use a flathead screwdriver and an CR2025 battery. Once you have the items and tools, you're ready to open the key fob. Locate the auxiliary key release. The button is located on the bottom of the metal part. It's easy to locate. When you hit the button, the cover should fall off right away. Next, place the head of the screwdriver into the notch or space at the top of the metal piece and pull it off.

After the auxiliary key has been removed, insert your new or spare key into the slot. Switch the ignition on and wait for about five seconds, then turn it to off. This will allow the system to recognize the new key and start your vehicle in the future.

It is only possible to program three keys on your Mazda 3. You don't want to have to use more than two key fobs in order to start your car. This is a safety precaution designed to prevent unauthorised users, such as valet drivers, from activating your key and thereby launching your vehicle.

How to Reprogram a spare key

If you have a spare key, it's a good idea know how to program it if your original key gets stolen or lost. This will stop unauthorized persons from abusing your vehicle and re-starting it. This should work with any Mazda. You will require two keys that are functioning to begin the reprogramming. If you don't have two functioning keys, you'll have to bring your car to the dealership to complete the process.

Begin by stepping into your driver's seat, and closing the door, except for the one that's been opened. Insert the first working key in the slot, then set the ignition to ON. Take five seconds before removing the key. Repeat the process with the second key.

Once you've programmed your new key, you should have three working keys you can use to start your car in the future. Test each key to be sure that they're working properly before taking them off.

You should consider buying an extra Mazda 3 remote, especially if your car is prone to problems. It's possible to find one on the internet or at your local automobile retailer, but make sure to read reviews before buying so that you aren't buying the wrong key fob compatible with your vehicle.

How do I change the battery on a spare key?

There's nothing more frustrating than discovering that the battery in your key fob has gone out and you're not able to unlock your vehicle. It's not a problem to replace the battery and save yourself some cash at the dealership.

The first step is to press the auxiliary button on the back of the key fob. This will release the key made of metal and reveal two slots on the opposite side of the case. Insert the flathead screwdriver into one of these slots and then gently take apart the two halves of the case. When the battery is completely exposed, take it out and put it away in a place where you will not forget it.

Be sure to have an additional battery before you begin. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the correct type of battery will ensure that your key fob works effectively.

Then, place the new battery in the correct place and replace the battery cap. Be careful not to scratch the rubber ring that holds the battery. Finally press the two parts of the key fob together until you hear the sound of a click.

How to reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenience. mazda 2 key programming 's also an element of security. If you lose your key or had it stolen the car will not start even if it has the spare key fob. This is because the key fob has to be reprogrammed by the dealership to work again. This can be an expensive and stressful experience therefore it's a great idea to understand how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will remove any residual electricity from the onboard computer. Then, disconnect both LF-ECU connector as well as the demand switch connectors. Verify that the connections are in good order between the terminals.


Place the key into the slot and switch on the ignition. Put the key in for about five seconds and then turn off. The key information will now be transferred to your vehicle's computer and the new fob will be able start your car in the future. You can program up to three fobs however, you should only use one at one time. This stops unauthorized individuals from copying the key and getting ahold of your vehicle. You can purchase a new keyfob online, but it will still need to be programmed and cut by a dealer.