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

If you've dropped your key fob on the ground or it simply stopped working, it's always recommended to keep a spare key handy. This article will provide everything you must know about adding, changing, or programming your Mazda 3 key fobs.

A word of caution Some keys require programming by a locksmith professional or dealer, while other keys do not. Make sure to use genuine Mazda Demio Key Replacement replacements for your key fob.

How do I add a spare key?

If you're unable to find a spare key from the dealership when you buy your mazda 6 car key replacement 3 or accidentally break the one you have but don't worry, there's an option to make another key. You'll need a flathead screwdriver and a new CR2025 battery. Once you've got these items and are ready to remove the key fob and change the battery. Locate the auxiliary key release. It's located on the underside the metal part. It's easy to find. The back cover should slide off when you press the button. Then, you can insert the screwdriver's head in the notch on top or into the space and pull the metal piece off.

Once the auxiliary key has been removed, insert your new or spare key into the slot. Turn the ignition on and wait for five seconds before turning it to off. This will add the new key's information 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 on your mazda key copy 3. You don't want to have to utilize more than two key fobs to start your car. This is a safety measure to prevent unauthorized users from activating your key fobs and starting your vehicle.

How do I reprogram a spare key?

It's smart to know how to reprogram an extra key in the event that your original key is lost or stolen. This will prevent unauthorized people from starting your car, or stealing it. This should work with any mazda key programming. You'll need two keys that work for the reprogramming to begin. If you don't own two working keys, you'll need take your vehicle to a dealer to get it done.

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

After you've completed programming your new key, you'll have three working keys that you can use to start your vehicle in the future. Test each key to ensure sure that they're working properly before taking them off.

It's a good idea to buy an extra Mazda 3 key fob, especially if your car is one who frequently loses their key or has other issues with it. You can purchase one on the internet or at a local automotive store. Make sure you look up reviews before you purchase so that you don't get the wrong key fob that isn't compatible with your car.

How to change the Battery on a Spare Key

It's awful to discover that your key fob is dead and you're unable to unlock your car. Fortunately, it's easy to replace the battery and save yourself some 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 metal key that is used as an auxiliary key, and expose a slot on both sides of the case. Press the flathead into one of these slots and then gently pull the two halves of the case apart. When the battery is completely exposed, remove it and place the case in a place where you will not forget it.

Before you start, make sure you have a brand new replacement battery. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is vital to make sure that your keyfob functions properly.

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

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a convenience. It also serves as a security feature. If you lose your key, or have it stolen, the car will not start even if you've got the spare fob. This is because the fob that you have to be reset at the dealership in order to function properly. This could be a costly and frustrating ordeal and it's a good idea to learn how to reset the system yourself.

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

Insert the key into the slot, and turn on the ignition. Turn off the ignition after about five seconds. The key's information is transferred to the computer of your vehicle and the new fob will start your car. You can program as many fobs as want, but only one should be used at a certain time. This will stop unauthorized individuals from stealing your keys and gaining access to your car. You can purchase a new key fob on the internet, but you'll still need to go to a locksmith or dealer in order to cut it and programmed.