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

It's a good idea to keep an extra key at hand regardless of whether you lost the keyfob or it was unable to function. This article will teach you how to add, alter and re-programme your Mazda 3 keyfobs.

Warning: Some keys require programming by professional locksmiths, while others don't. Only use official Mazda replacements to replace your key fob.

How to add a spare key

You can add another key in the event that you don't have a spare key available or in the event that you break the one you have. mazda 2 key fob 'll need to use a flathead screwdriver, and the CR2025 replacement battery. Once you have these items you can remove the key fob and change the battery. First, locate the auxiliary key release button. The button is on the bottom of the metal portion. It's easy to find. When you press the button, the cover should be removed immediately. Then, you can insert the screwdriver's head into the notch or spacing at the top of the metal part and then pull it off.

After the auxiliary key has been removed, insert your new or spare key into the slot. Turn the ignition on and then wait for around five seconds, then turn it to off. This will register the new key's details to the system and allow it to start your car in the future.

You can only program three keys into your Mazda 3. You don't want to utilize more than two key fobs in order to start your vehicle. This is a security measure designed to prevent unauthorized users, like valet drivers, from activating your key and starting your car.

How to Reprogram a Spare Key

It's a smart idea to learn how you can reprogram a spare key in the event that the original key is lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This process should work on any Mazda however you'll need two keys that work to begin the reprogramming process. If you don't have two keys that function, it's best to take your vehicle to a dealer to have this completed.

Begin by stepping into your driver's seat and shutting the door, excluding for the one that's opened. Turn the ignition on and insert the first functioning key. Wait five seconds before removing the key. Repeat with the second key.

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

It's a good idea buy 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 in your local auto store. Make sure to go through reviews prior to purchasing to ensure you don't buy an item that isn't compatible with your vehicle.

How to change the battery on a spare key

There's nothing worse than finding that the battery in your key fob has been damaged and you're unable to unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.

The first step is to press the auxiliary key button on the back of the key fob. This will take out the key's metal cover and reveal an opening on each side of the case. The flathead should be inserted into one of these slots and then gently pull the two halves of the case apart. When the battery is fully exposed, remove the case and place it in a place where you won't forget it.

Before you start, make sure that you have a new replacement battery. They are available at any retailer that sells batteries or at an Mazda dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob works correctly.

Replace the battery cap and then put in the new battery. Be careful not to damage the small rubber ring that the battery sits on. Then, press the two halves of the key fob together until you hear the sound of a click.

How to reset the system's Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It's also an important security feature. The car won't start if your key is stolen or lost even if you have an extra fob. The key fob needs to be reprogrammed by a dealer to enable it to function again. It can be a stressful and costly experience. So, it's best to know how to reset the system.

Remove the battery from the system for 15 minutes. This will erase any residual electricity in the on-board computer. Next, 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 turn the ignition to ON. The ignition should be turned off after approximately five seconds. The key's details will be added to the vehicle's computer and the new fob will be able start your car in the future. You can program as many fobs as you would like however only one should be used at any certain time. This stops unauthorized individuals from copying the key and gaining access to your vehicle. You can purchase a replacement keyfob online, however it will still need to be programmed and cut by an authorized dealer.