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

If you've dropped your key fob on the ground or it just stopped working, it's recommended to keep an extra key available. This article will explain how to add, change, and reprogramme your Mazda 3 keyfobs.

Note: Some keys require programming from an expert locksmith, while others don't. Only use genuine Mazda Cx 5 keyless entry replacements to replace your key fob.

How do you add a spare key

If you're not fortunate enough to get a spare key from the dealership when you buy your Mazda 3 or accidentally break your current key do not fret -- there is still an option to get another key. To do this, you'll need a small flathead screwdriver and a new CR2025 battery. Once you've got the tools you can open the key fob and swap the battery. Find the key release auxiliary. The button is located on the underside of the metal part. It's easy to find. When you hit the button, the back cover should slide off immediately. Then, insert the screwdriver's head into the notch, or the spacing at the top of the metal part and pull it away.

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

It is only possible to program three keys on your Mazda 3. You don't want to utilize more than two key fobs in order to start your vehicle. This is a safeguard to stop anyone who is not authorized from activating your keys and starting your car.

How do I reprogram an unrepaired key?

If you have a spare key it's important to be aware of how to reprogram it in the event that your original key is stolen or lost. This will stop unauthorized persons from stealing your car and starting it. This will work with any Mazda. You will require two keys that work to begin the reprogramming process. If you don't have two working keys, you'll have to bring your vehicle to the dealership to get it done.

Start by stepping into driver's position, and close all the doors with the exception of the one that is open. Insert the first working key in the slot, then set the ignition to the ON position. Wait five seconds, then remove the key and repeat the process with the second key.

After programming your new key you should have 3 keys that will work to start your car in the near future. Before saving each key, be sure that it's functioning properly.

You should consider buying an extra Mazda 3 remote, especially in the event that your vehicle is prone to problems. You can find one online or at your local auto store, but be sure to read the reviews before purchasing so that you can avoid getting a key fob that's not compatible with your vehicle.

How do I change the battery on a spare key

There's nothing more frustrating than discovering that the battery in your key fob has failed and you are 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 button on the back of the key fob. This will remove the key auxiliary to reveal two slots on the sides of the case. Place the flathead in one of these slots, and then gently pry the two halves apart. Once the battery has been fully exposed, take it out of the case and place it somewhere you will not forget it.

Make sure you have a replacement key for mazda 2 battery before you start. You can purchase them at any store that sells batteries or at a mazda smart key programming dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob is working correctly.

Replace the cap on the battery, and then install the new battery. Be careful not to damage the small rubber ring that the battery sits on. Finally press the two halves of the key fob together until you hear an audible click.

How do I reset the Keyless Entry System

The key fob on your mazda keyless remote 3 is not only a convenience, it's also an important security feature. If you lost your key or had it stolen the car will not start even if you've got the spare fob. This is because the key fob has to be reset at the dealership in order to work again. It's a difficult and costly process. So, it's best to know how to 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 the LF-ECU and demand switch connectors. Then, verify the continuity between the following terminals:

Put the key in the slot, and turn the ignition ON. Leave the key in for about five seconds, then turn off. The key's information will be transferred to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program as many fobs as want however only one must be utilized at any certain time. This prevents unauthorized people from copying your key and getting ahold of your car. You can buy a new key fob on the internet, but you'll still have to visit an authorized locksmith or dealer to cut it and get it programmed.