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

It's a good idea always to have an extra key at hand no matter if you've dropped the keyfob you were using or it was unable to function. This article will provide everything you should learn about changing, adding, and changing your mazda verisa key replacement 3 keyless entry (Recommended Reading) 3 key fobs.

A word of caution Certain keys require programming by a professional locksmith or dealer, while others don't. Make sure you only make use of official mazda spare key replacement replacements for your key fob.

How to add a spare key

If you're unable to get a spare key from the dealer when you buy your Mazda 3 or accidentally break your current key, don't worry -- there's the option of adding another key. You'll need to use the flathead screwdriver, as well as a new CR2025 battery. Once you've got these tools then it's time to access the key fob and swap the battery. Find the key release auxiliary. It's located on the underside of the metal component and is easy to locate. The back cover should slide off when you press the button. Then, insert the screwdriver's tip into the notch at the top or the space and take the metal part away.

Insert your new or spare key into the slot after you have removed the auxiliary key. Set the ignition to ON and wait for five seconds before setting it to OFF. This will add the new information on the key to the system, allowing it to start your car in the future.

It's important to note that you can only program up to three keys for your mazda extra key 3. The most important thing is to have more than two functioning key fobs but not be able to get your car started. This is a precautionary measure to prevent unauthorized users from activating your keys and starting your vehicle.

How to Reprogram a spare key

If you have a spare key it's important to know how to reprogram it in the event that the original key you had is stolen or lost. This will prevent unauthorized people from starting your car or stealing it. This should work with any Mazda. You will require two keys that are functioning to begin the reprogramming process. If you don't have two keys that function, it's best to take your car to a dealer to have this done.

Begin by getting into your driver's seat, and closing the door, except for the one that's been opened. Place the working key in the slot, then set the ignition to ON. Wait five seconds, then remove the key and repeat with the second working key.

After you've completed programming your new key, you should have three keys that you can use to start your vehicle in the future. Before placing each key in storage, make sure that it's functioning properly.

It's a good idea to buy a spare Mazda 3 key fob, especially if you're someone who often loses your key or has other issues with it. You can find one online or at a local automotive store, but make sure to read the reviews prior to purchasing so you aren't purchasing the wrong key fob compatible with your vehicle.

How to Change the Battery on a Spare Key

There's nothing worse than discovering that the battery for your key fob has gone out and you're not able to unlock your car. Luckily, it's easy to replace the battery and save yourself some cash at the dealership.

Press the auxiliary key button at the back of the keyfob. This will take out the key made of metal and reveal two slots on the opposite side of the case. Use the screwdriver's flathead to push it into one of these slots and then gently remove the two sides of the case. When the battery is completely exposed, remove it and place the case in a place where you will not forget it.

Be sure to have a new battery ready prior to beginning. They can be bought at any store selling batteries or from a mazda lost key dealer in Winter Garden. Using the right type of battery will ensure that your key fob works effectively.

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

How to Reset the system's Keyless Entry System

The key fob in your Mazda 3 is not only an extra convenience, but also an important security feature. The car will not start if the key is lost or stolen even if you have a spare fob. This is because the key fob has to be reprogrammed by the dealership in order to work once more. It can be a stressful and costly process. Therefore, it's best to understand 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 LF-ECU connector and the demand switch connectors. Check for continuity between the terminals.

To program an entirely new key or spare, place it in the slot and turn the ignition to ON. Keep the key in place for around five seconds and then turn off. The key's information is stored in the car's computer and the new fob can start your vehicle. You can program as many fobs you desire but only one can be used at a specific time. This prevents unauthorized people from copying the key and gaining access to your car. You can purchase a replacement key fob on the internet, but you'll still need to visit an expert locksmith or dealer to get it cut and programmed.