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

It's a good idea to have an extra key at hand regardless of whether you lost your keyfob or it has stopped working. This article will provide everything you should know about adding, changing, and programming your mazda spare key 3 key fobs.

A word of caution Certain keys need to be programmed by a professional locksmith or dealer, while other keys do not. Make sure to make use of official Mazda replacements for your key fob.

how to get a new mazda key to add an extra key

You can also add a second key if you don't have a spare key available or in the event that you break the one you already have. You'll need a flathead screwdriver and an CR2025 battery. Once you have these items, it's time to open the key fob to change the battery. Find the auxiliary key release. The button is located beneath the metal portion. It's easy to locate. The back cover should slide off as soon as you press the button. Then, insert the screwdriver's head into the notch at the top or in the space, and take the metal part away.

Once the auxiliary key is removed, insert your new or spare key into the slot. Set the ignition ON and wait for approximately five seconds, then set it to off. This will register the new key's details to the system and allow it to start your car in the future.

It's important to keep in mind that you can only program up to three keys for your mazda 6 replacement key cost 3. The most important thing is to have more than two working key fobs but not be in a position to get your car started. This is a security precaution designed to prevent unauthorized users, such as valet drivers, from activating your key and starting your car.

How do you reprogram a spare key

If you have a spare key it's a good idea to know how to reprogram it in the event that your original key gets stolen or lost. This will stop unauthorized persons from getting into your car and causing damage to it. This method should work on any mazda remote key replacement, though you'll need two working keys to begin the reprogramming process. If you don't have two keys that function, it's best to take your Mazda to a dealer to have this done.

Begin by getting in your driver's seat, and shutting the door, excluding for the one that's been opened. Put the first working key into the slot, then turn the ignition to the ON position. Wait five seconds before removing the key. Repeat with the second key.

After programming your new key you should have 3 keys that work to start your vehicle in the future. Before placing each key in storage, make sure that it's working correctly.

It's a good idea purchase a spare Mazda 3 key fob, especially if you're a driver who is prone to losing keys or has other issues with it. You can buy one online or at your local automobile retailer, but make sure to read reviews before purchasing so that you aren't purchasing an item that isn't compatible with your vehicle.

How do you change the battery using a spare key

There's nothing more frustrating than finding that the battery on your key fob failed and you are unable to unlock your vehicle. Fortunately, it's easy to replace the battery and save some money at the dealer.

The first step is to press the auxiliary key button on the back of the key fob. This will detach the key made of metal and reveal the slots on both sides of the case. The flathead should be inserted into one of these slots and gently pry the two halves apart. Once the battery is fully exposed, remove the case and place it somewhere that you will not forget it.

Be sure to bring a new battery ready before you start. You can purchase them at any store that stocks batteries or at a Mazda dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob functions effectively.

Replace the cap on the battery, and then insert the new battery. Be careful not to damage the small rubber ring that the battery rests on. The two halves should be pressed together until you hear the click.

How to reset a Keyless Entry System

The key fob inside your Mazda 3 is not only an option for convenience, it's an important security feature. If you lose your key or have it stolen the car will not start even if you've got the spare fob. The key fob has to be reset by the dealer to enable it to function again. It can be a stressful and costly process. So, it's best to learn how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will remove any remaining electricity from the on-board computer. Then, disconnect both the LF-ECU connector as well as the demand switch connectors. Verify the continuity between the next terminals.

To program the new key or spare, insert it into the slot and turn the ignition to ON. Turn off the ignition after approximately five minutes. The key information is now stored in the car's computer and the new fob will start your car. You can program as many fobs as you desire but only one can be in use at any specific time. This stops unauthorized individuals from copying the key and gaining access to your vehicle. You can purchase a new keyfob on the internet, but it still needs to be programmed and cut by an authorized dealer.