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

If you've dropped your key fob on the floor or it has stopped working, it's always a good idea to have a spare key handy. This article will teach you how to add, modify or reprogramme the mazda key fob 3 keyfobs.

Certain keys require programming by a professional locksmith, while others don't. Make sure you only use genuine mazda car key replacement replacements for your key fob.

How do I add an additional key

If you're not fortunate enough to find a spare key from the dealer when you buy your Mazda 3 or accidentally break your current key do not fret -- there is still an option to make another key. To accomplish this, you'll require a small screwdriver with a flat head and an CR2025 battery that's new. Once you've got the tools, it is time to open the key fob. Locate the key release auxiliary. It's on the underside of the metal piece and is easy to locate. The cover on the back should fall off when you press the button. Next, insert the screwdriver's head into the notch or space at the top of the metal piece and then pull it off.

Insert your spare or new key into the slot after taking out the additional key. Set the ignition to ON and wait about five seconds before turning it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.

It is only possible to program three keys into your Mazda 3. The final thing you want is to have more than two functioning key fobs but not be able to get your car started. This is a security measure to prevent unauthorized users from activating your key fobs and starting your vehicle.

How to Reprogram a Spare Key

If you have a spare key it's a good idea to know how to program it in the event the original key you had is lost or stolen. This will stop unauthorised people from getting into your car and causing damage to it. This will work with any Mazda. You'll require two keys that work to begin the reprogramming process. If you don't own two working keys then it's best to bring your vehicle to a dealer to get this completed.

Begin by stepping into your driver's seat, and close the door, except for the one that's opened. Place the first working key into the slot, then set the ignition to the ON position. Take five seconds before removing the key. Repeat with the second key.

After programming your new key, you should have three keys that allow you 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 buy a spare Mazda 3 key fob, especially if you're a driver who is prone to losing keys or has other issues with it. You can purchase one online or at your local auto store. Make sure you go through reviews prior to purchasing to ensure you don't buy one that's not compatible with your car.

How to Change the Battery on a spare key

It's very frustrating to discover that your key fob is dead and you're locked out of your car. It's easy to change the battery yourself and save money at the dealer.

The first step is to press the auxiliary button on the back of the key fob. This will remove the key that is used as an auxiliary key, and expose slots on both sides of the case. Place the flathead in one of these slots, and then gently push the two halves apart. When the battery is fully exposed, remove the case and put it in a spot where you'll never forget about it.

Be sure to bring a new battery ready before you start. You can find these at any store that sells batteries or at an Mazda dealer near Winter Garden. Using the right type of battery will ensure that your key fob functions properly.

Next, put the replacement 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. Then press the two parts of the key fob together until you hear a click.

How do you reset the Keyless Entry System

The key fob in your Mazda 3 is not only a convenience, it's also an important security feature. The car won't start if the key is stolen or lost, even if you've got a spare key fob. The key fob must be reset by the dealer to make it work again. It can be a costly and time-consuming process, so 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 electrical power in the on-board computer. Then, disconnect the LF ECU and demand switch connectors. Verify the continuity between the next terminals.

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