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

It's a good idea to keep an extra key in your pocket no matter if you've dropped the keyfob you were using or it stopped working. This article will tell you how to add, alter or reprogramme your mazda replacement keys 3 keyfobs.

A word of warning Certain keys need to be programmed by a locksmith professional or dealer, whereas other keys don't. Make sure you use only genuine Mazda replacements to replace your key fob.

How do I add a spare key?

If you're not lucky enough to get a spare key from the dealership when you buy your Mazda 3 or accidentally break the one you have do not fret -- there's an option to make another key. You'll need to use the flathead screwdriver, as well as an CR2025 battery. Once you've got these tools then it's time to open the key fob and change the battery. First look for the button that allows you to release the key. The button is beneath the metal portion. It's easy to find. The back cover should come off the moment you press the button. Then, insert the screwdriver's head into the notch at the top or in the space, and pull the metal piece off.

After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition ON and wait for approximately five seconds, then turn it to off. This will register the new information on the key to the system which will allow it to start your car in the future.

It is important to remember that you can only program up to three keys on your Mazda 3. You don't want to utilize more than two key fobs in order to start your car. This is a safeguard to prevent unauthorized users from activating your keys and launching your vehicle.

How to reprogram a spare key

It's smart to be aware of how to reprogram a spare key in the event that your original key is lost or stolen. This will prevent unauthorized people from starting your car, or taking it. This procedure should work with any Mazda however, you'll require two keys that work to begin the process of reprogramming. If you don't own two keys that function, you should take your vehicle to a dealer to get this done.

Begin by stepping into the driver's seat, close all the doors, except the one that is open. Place the working key into the slot, then turn the ignition to ON. Take five seconds before removing the key. Repeat the process with the second key.

After you finish programming your new key, you'll have three keys that will be able to start your car in the future. Test each key to make sure they're working correctly before placing them away.

It's a good idea purchase a spare Mazda 3 key fob, especially if your car is one who is prone to losing keys or has other issues with it. You can purchase one online or at your local auto store, but make sure to read the reviews before buying so that you aren't purchasing the wrong key fob compatible with your vehicle.

How to Change the Battery on a spare key

It's awful to discover that the key fob you used to use has gone out and you're locked out of your car. Fortunately, it's easy to replace the battery and save some money at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will remove the metal key auxiliary and reveal slots on both sides of the case. Press the flathead into one of these slots and gently pry the two halves apart. When the battery is completely exposed, remove it and put it away somewhere you won't forget it.

Be sure to have an extra battery in place before you begin. They are available at any store that sells batteries or at an mazda 2 spare key dealer near Winter Garden. The right type of battery is vital to ensure that your key fob functions properly.

Replace the cap of the battery and then insert the new battery. Be careful not to scratch the rubber ring on which the battery rests. Finally press the two parts of the key fob until you hear a click.

How do I reset the system's Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also a security feature. The car will not start if the key is stolen or lost even if you have a spare fob. The key fob should be reprogrammed by the dealer to allow it to work again. It can be a costly and frustrating experience therefore it's a great idea to learn how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will remove any residual electrical current from the computer on board. The next step is to disconnect the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

Place the key into the slot, then switch the ignition on. Keep the key in place for around five seconds and then switch it off. The key's information is added to the computer in your car and the new fob is able to start your vehicle. You can program up to three fobs, but you should only use one at a time. This will prevent unauthorized people from stealing your key and getting access to your vehicle. You can purchase a new keyfob online, but it will still need to be cut and programmed by an authorized dealer.