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

It's a good idea always to keep an extra key in your pocket regardless of whether you lost your keyfob or workshop it stopped working. This article will explain how to add, alter, and reprogramme your Mazda 3 keyfobs.

Warning: Some keys require programming by a professional locksmith, while others don't. Only use genuine mazda 2 replacement key fob replacements to replace your key fob.

How do I add a spare key?

You can also add an additional key if you don't have a spare key or when you accidentally damage your existing one. You'll need to use a flathead screwdriver and a CR2025 new battery. Once you've got these items and are ready to remove the key fob and swap the battery. Locate the auxiliary key release. The button is located on the bottom of the metal portion. It's easy to find. The cover that covers the back should come off when you press the button. Next, place the head of the screwdriver into the notch or space on the top of the metal piece and pry it off.

After the auxiliary key has been removed, insert your new or spare key into the slot. Set the ignition ON and wait for five seconds before turning it to off. This will add the new information on the key to the system, allowing it to start your vehicle in the future.

You can only program three keys on your mazda key 3. You don't want to use more than two keys to start your vehicle. This is a safety measure that is designed to block unauthorized users, such as valet drivers from activating your key and starting your vehicle.

How to reprogram an unrepaired key?

If you have a spare key it's a good idea to be aware of how to reprogram it in the event that your original key gets lost or stolen. This will stop unauthorised people from starting your vehicle or taking it. This should work with any Mazda. You'll need two keys that are working to begin the reprogramming. If you don't have two functioning keys, you'll need take your vehicle to a dealership to complete the process.

Begin by getting into your driver's seat, and close the door, with the exception for the one that's been opened. Place the first working key into the slot, and then set the ignition to the ON position. After five seconds, remove the key. Repeat the process with the second key.

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

You should think about purchasing an extra mazda car key 3 remote, especially in cases where your car is prone to problems. You can buy one online or at your local auto store, but make sure to read reviews before buying so that you can avoid getting one that's not compatible with your car.

How do I change the battery on a spare Key

There's nothing worse than finding that the battery on your key fob failed and you are unable to unlock your vehicle. It's not a problem to replace the battery and save some money at the dealership.

The first step is to press the auxiliary key button on the back of the key fob. This will remove the key auxiliary and reveal slots on both sides of the case. Put the flathead screwdriver in one of these slots. Then, gently remove the two sides of the case. When the battery is completely exposed, take it out and place it in a safe place somewhere safe from being lost.

Before you start, make sure you have a new replacement battery. They can be bought at any store selling batteries or from a mazda car key replacement dealer in Winter Garden. Choosing the right battery will ensure that your key fob works effectively.

Next, put the new battery into place and replace the cap on the battery. Be careful not to damage the small rubber ring the battery is placed on. Then press the two parts of the key fob together until you hear the sound of a click.

How to Reset the Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It's also a security feature. The car won't start if the key is lost or stolen, even if you've got a spare fob. The key fob must be reset by the dealer to make it work again. It's a difficult and costly process. Therefore, it's recommended to know how to reset the system.

To reset the system, unplug the battery for around 15 minutes. This will eliminate any remaining electricity from the onboard computer. Then, disconnect both the LF-ECU connector as well as the demand switch connectors. Check for continuity between the terminals.

To program an entirely new key or spare, place it in the slot and turn the ignition to ON. The ignition should be turned off after approximately five minutes. The key information is now stored in the car's computer and the new fob will start your vehicle. You can program any number of fobs you would like, but only one should be used at any given time. This will stop unauthorised people from copying the key and getting ahold of your vehicle. You can purchase a new key fob online, but you'll still need to visit an expert locksmith or dealer to have it cut and programmed.