How to Add, Change, and Reprogram a Mazda 626 Key 3 Spare Key

It's a good idea to have a spare key on hand no matter if you've dropped the keyfob or it has stopped working. This article will cover everything you should be aware of adding, changing, or reprogramming your mazda 3 remote key 3 key fobs.

Certain keys require programming by an experienced locksmith, whereas others do not. Only use authentic Mazda replacements to replace your key fob.

How to add an additional key

If you're not lucky enough to receive a spare keys from the dealer when you buy your Mazda 3 or accidentally break your current key but don't worry, there's still a way to add another key. To do this, you'll need a small flathead screwdriver and the new CR2025 batteries. Once you've got these items you need, it's time to open the key fob. Locate the key release auxiliary. It's located under the metal component and is easy to locate. The back cover should come off the moment you press the button. Then, you can insert the screwdriver's tip into the notch at the top or the space and pull the metal piece off.

Insert the spare or new key into the slot after removing the auxiliary key. Set the ignition to ON, and wait for around five seconds before turning it to OFF. This will register the new key's information into the system which will allow it to start your car in the future.

It is only possible to program three keys to your Mazda 3. You don't want to use more than two keys to start your car. This is a safety measure designed to stop unauthorized users, such as valet drivers who are not authorized to use your key and thereby launching your vehicle.

how to program mazda 3 key with only one key to Reprogram a Spare Key

If you have a spare key, it's a good idea be aware of how to reprogram it in the event that your original key gets stolen or lost. This will prevent unauthorized people from starting your car or taking it. This process is compatible with any Mazda but you'll need two keys that work to begin the reprogramming process. If you don't own two working keys, it's best to take your car to a dealer to get this completed.

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

After you've programmed your new key, you should have three keys that you can use to start your vehicle in the future. Test each key to make sure that they're operating correctly before taking them off.

You should consider buying a spare Mazda 3 remote, especially in cases where your car is prone to issues. You can purchase one online or in your local auto store. Be sure to look up reviews before you purchase to ensure you don't buy a key fob which isn't compatible with your vehicle.

How to Change the Battery on a spare key

There's nothing more frustrating than discovering that your key fob battery has died and you can't unlock your vehicle. It's a good thing that it's simple to replace the battery and save some cash at the dealership.

The first step is to press the auxiliary key button on the back of the key fob. This will release the metal key auxiliary and reveal a slot on both sides of the case. Place the flathead in one of these slots and gently pry the two halves of the case apart. Once the battery has been fully exposed, take it out of the case and place it somewhere that you will not forget about it.

Be sure to have a new battery ready prior to starting. These batteries can be purchased at any store selling batteries or from a mazda 3 remote key dealer in Winter Garden. The correct type of battery is essential to ensure that your keyfob works correctly.

Then, place the new battery into place and replace the cap on the battery. Be careful not to scratch the small rubber ring that the battery sits on. Press the two halves together until you hear a click.

How do I reset the Keyless Entry System

The key fob on your mazda replacement key 3 is not only an added convenience, but it's also an important security feature. The car will not start if your key is stolen or lost even if you have a spare fob. The key fob must be reprogrammed by the dealer to enable it to function again. This can be a painful and costly process. Therefore, it's advisable to understand how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will remove any remaining power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Check for continuity between the following terminals:

To program a new key or a spare, insert it into the slot and set the ignition to ON. The key should remain in the ignition for about five seconds and then switch off. The key information is now added to the vehicle's computer and the new fob is able to start your vehicle. You can program as many fobs you desire however only one must be in use at any specific time. This prevents unauthorized people from copying the key and gaining access to your car. You can purchase a new keyfob from the internet, however it will still need to be cut and programmed by an authorized dealer.