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The 3 Most Significant Disasters In Mazda 6 Key History
How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea to keep an extra key at hand in case you lose the keyfob or it was unable to function. This article will provide everything you should learn about the process of adding, changing, and reprogramming your Mazda 3 key fobs.

A word of caution Some keys require programming by a professional locksmith or dealer, while others don't. Only use genuine Mazda replacements to replace your key fob.

How to add a spare key

If you're not lucky enough to find a spare key from the dealership when you purchase your Mazda 3 or accidentally break your current one Don't fret, there's still an option to get another key. You'll need an flat-head screwdriver and a new CR2025 battery. Once you've got the tools and tools, you're ready to open the key fob. Find the auxiliary key release. The button is on the bottom of the metal portion. replace mazda key to find. The cover on the back should fall off as soon as you press the button. Then, put the screwdriver head into the notch at the top or in the space, and pull the metal piece off.

Insert your new or spare key into the slot after taking out the accessory key. Set the ignition to ON, and wait for five seconds before turning it to OFF. This will register the new key's details to the system which will allow it to start your car in the future.


It is only possible to program three keys into your Mazda 3. You don't want to utilize more than two key fobs to start your car. This is a security precaution that is designed to block unauthorized users, such as valet drivers who are not authorized to use your key and thereby launching your vehicle.

How to Reprogram a spare key

It's a smart idea learn how you can reprogram an extra key in the event that the original key is lost or stolen. This will prevent unauthorised persons from abusing your vehicle and re-starting it. This will work with any Mazda. You will need two keys that work for the reprogramming to begin. If you don't have two keys that function then it's best to bring your car to a dealer to get this completed.

Begin by getting in your driver's seat, and close the door, with the exception for the one that's opened. Put the first working key in the slot, then turn the ignition to ON. Wait five seconds, then take the key out and repeat with the second key.

Once you've programmed your new key, you should have three working keys you can use to start your car in the future. Before placing each key in storage, make sure it's working properly.

It's a good idea to buy a spare Mazda 3 key fob, especially if you're someone who is prone to losing keys or has other issues with it. You can buy one online or at your local automotive store, but make sure to read the reviews before purchasing so that you aren't purchasing an item 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 has died and you're in a position to not 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 key button that is located on the back of the key fob. This will take out the metal key auxiliary and reveal a slot on both sides of the case. Press the flathead into one of these slots, and then gently pry the two halves apart. When the battery is fully exposed, take it out of the case and put it somewhere you will not forget it.

Before you begin, make sure you have a brand new replacement battery. You can find these in any store that sells batteries or at an Mazda dealer close to Winter Garden. Using the right type of battery will ensure that your key fob operates correctly.

Next, put the new battery in its place and then replace the cap on the battery. Be careful not damage the rubber ring that holds the battery. Finally press the two halves of the key fob 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 an element of security. The car won't start if the key is stolen or lost even if you have a spare key fob. This is because the key fob has to be reprogrammed by the dealership in order to work again. This can be a costly and frustrating ordeal therefore it's a great idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will eliminate any residual electric current from the onboard computer. Then, disconnect both LF-ECU connector and the demand switch connectors. Check continuity between the following terminals.

Put the key in the slot, and turn the ignition ON. Keep the key in place for around five seconds and then turn it off. The key information is now added to the vehicle's computer and the new fob can start your vehicle. You can program as many fobs as you desire but only one can be utilized at any particular time. This will stop unauthorised people from copying the key and gaining access to your car. You can purchase a replacement key fob online, but you'll still have to visit an authorized locksmith or dealer to get it cut and programmed.