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

It's a good idea always to keep an extra key on hand no matter if you've dropped your keyfob or it has stopped working. This article will provide everything you must know about adding, changing, or changing your Mazda 3 key fobs.

Certain keys require programming by professional locksmiths, while others do not. Use only official Mazda replacements to replace your key fob.

How to Add a Spare Key

If you're not lucky enough to receive a spare keys from the dealer when you purchase your Mazda 3 or accidentally break the one you have Don't fret, there's an option to make another key. To accomplish this, you'll require a small screwdriver with a flat head and a new CR2025 battery. Once you've got these items you can remove the key fob to change the battery. First find the button that allows you to release the key. It's located under the metal component and is easy to locate. The back cover should come off as soon as you press the button. Then, you can insert the screwdriver's head into the notch or spacing on the top of the metal piece and then pull it off.

Insert your spare key or a new one into the slot after taking out the additional key. Set the ignition ON and wait for about five seconds before turning it to OFF. This will register the new key's details to the system that will allow it to start your car in the future.

It's important to note that you can only program up to three keys on your Mazda 3. You don't want to have to utilize more than two key fobs in order to start your vehicle. This is a precautionary measure to stop anyone who is not authorized from activating your keys and starting your vehicle.

How to Reprogram a Spare Key

If you have a spare key, it's a good idea to know how to program it in the event your original key gets lost or stolen. This will prevent unauthorised persons from stealing your car and starting it. This process should work on any Mazda however you'll need two keys working to begin the reprogramming process. If you don't have two functioning keys, you'll need to take your vehicle to a dealership to have it done.

Start by stepping into the driver's position, and close all the doors with the exception of the one that is open. Turn the ignition on and then insert the first working key. Take 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 vehicle in the future. Before placing each key in storage, make sure that it's working correctly.

It is advisable to purchase an extra mazda key 3 remote, especially when your car is susceptible to issues. It's possible to find one on the internet or at your local auto retailer, but make sure to read the reviews before buying so that you can avoid getting a key fob that's not compatible with your vehicle.

How to change the Battery on a Spare Key

It's awful to discover that your key fob has failed, and you are locked out of your car. Fortunately, it's easy to replace the battery and save some cash at the dealership.

Press the auxiliary button on the back of the keyfob. This will remove the key from the metal and reveal two slots on the opposite side of the case. Place the flathead in one of these slots and gently pry the two halves apart. Once the battery has been fully exposed, remove the case and put it in a place where you won't forget about it.

Be sure to have a new battery ready before you begin. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. The correct battery is essential to ensure that your keyfob is working properly.

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

How do I reset the Keyless Entry System

The key fob that you have in your mazda key fob replacement 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 it has the spare key fob. This is because the key fob needs to be reset at the dealership to work once more. It's a difficult and costly process. So, it's best to understand how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will clear any residual electric current from the onboard computer. Then, disconnect the LF ECU and demand switch connectors. Check continuity between the following terminals.

To program a new key or a spare, insert it into the slot and set the ignition to ON. Put the key in for about five seconds, then turn it off. The key's details are now added to the computer in your car and the new fob can start your vehicle. You can program as many fobs as would like however only one should be used at any given time. This will stop unauthorised people from copying your key and getting ahold of your vehicle. You can purchase a brand new keyfob from the internet, however it'll still need to be programmed and cut by an authorized dealer.