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Whether you dropped your key fob on the floor or it simply stopped working, it's a good idea to have an extra key available. This article will explain how to add, alter, and reprogramme your Mazda 3 keyfobs.

A word of caution: some keys require programming by a professional locksmith or dealer, while others do not. Only use authentic Mazda replacements to replace your key fob.

How to add an extra 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 Don't fret, there's still an option to get another key. To accomplish this, you'll need an inexpensive flathead screwdriver as well as the new CR2025 batteries. Once you've got these tools you can remove the key fob and swap the battery. First find the button that allows you to release the key. The button is on the bottom of the metal part. It's easy to locate. When you hit the button, the cover will fall off instantly. Then, you can insert the screwdriver's tip into the notch on top or the space, and take the metal part away.

After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition ON and wait for about five seconds before turning it to OFF. This will register the new key's details to the system and allow it to start your car in the future.

It's important to know that you can only program up to three keys for your Mazda 3. The most important thing is to have more than two functioning key fobs but not be in a position to get your vehicle started. This is a safety precaution designed to stop unauthorized users, like valet drivers from activating your key and thereby launching your vehicle.

How to Reprogram a Spare Key

It's a good idea to be aware of how to reprogram a spare key in the event that your original key becomes lost or stolen. This will stop unauthorised people from taking your car and then starting it. This process is compatible with any Mazda but 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 Mazda to the dealer to have this done.

Begin by getting into your driver's seat, and closing the door, except for the one that's been opened. Put the first working key into the slot, then turn the ignition to ON. After five seconds, remove the key. Repeat with the second key.

After you've programmed your new key, you should have three keys that will start your car in the future. Before saving each key, be sure that it's functioning properly.

It's a good idea purchase an extra Mazda 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. You can buy one online or at your local automotive store, but be sure to read reviews before buying so you aren't purchasing 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 finding that the battery for your key fob has failed and you are unable to unlock your vehicle. It's simple to replace the battery yourself and save money at the dealer.

Press the auxiliary key button at the back of the keyfob. This will release the metal key and reveal an opening on each side of the case. Use the screwdriver's flathead to push it into one of these slots, and gently pry apart the two halves of the case. Once the battery is fully exposed, remove it and put it away somewhere safe from being lost mazda 3 key fob.

Make sure you have a new battery ready prior to starting. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the right type of battery will ensure that your key fob functions correctly.

Then, put the new battery in the correct place and replace the cap of the battery. Be careful not to damage the rubber ring that holds the battery. Press the two halves together until you hear the click.

How do I reset the system's Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It also serves as an important security feature. If you lose your key or had it stolen the car won't start even if it has the spare key fob. The key fob has to be reset by the dealer to enable it to function again. It can be a costly and frustrating ordeal It's a good idea to learn how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will erase any residual electrical power in the on-board computer. Then, disconnect both LF-ECU and demand switch connectors. Check for continuity between the following terminals:

Place the key in the slot, then switch on the ignition. Leave the key in for about five seconds and then switch it off. The key's details are now added to the vehicle's computer and the new fob will start your car. You can program as many fobs as you would like but only one can be used at any particular time. This prevents unauthorized people from copying your key and getting ahold of your car. You can purchase a brand new keyfob online, however it will still need to be programmed and cut by an authorized dealer.