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Mazda 6 Key 10 Things I Wish I'd Known Earlier
How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea to keep an extra key at hand no matter if you've dropped your keyfob or it was unable to function. This article will explain everything you need to know about the process of adding, changing, and changing the programming of your Mazda 3 key fobs.

A word of warning: some keys require programming by a locksmith professional or dealer, whereas other keys do not. Make sure you use only official Mazda replacements to replace your key fob.

How to add a spare key

If you're not fortunate enough to receive a spare key from the dealer when you buy your Mazda 3 or accidentally break your current one but don't worry, there is 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 items then it's time to open the key fob. Locate the key release auxiliary. It's located underneath the metal portion and is easy to locate. The cover on the back should fall off the moment you press the button. Next, place the head of the screwdriver into the notch, or the spacing on the top of the metal component and pull it off.

After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition to ON, and wait about five seconds before setting it to OFF. This will register the new key's information to the system that will allow it to start your vehicle in the future.

It's important to keep in mind that you can only program up to three keys for your Mazda 3. The last thing you want is to have more than two working key fobs and not be in a position to get your vehicle started. This is a safety precaution that is designed to block unauthorized users, such as valet drivers, from activating your key and starting your vehicle.

How to Reprogram a spare key

If you have a spare key it's a good idea to be aware of how to reprogram it in case the original key you had is lost or stolen. This will keep unauthorized people 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 the two working keys, you'll have to take your vehicle to the dealership to complete the process.

Begin by putting yourself in the driver's seat and close the door, except for the one that's opened. Place the working key into the slot, and then set the ignition to the ON position. For five seconds, take the key out and repeat the process with a second key.

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

It's a good idea to purchase an extra 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 on the internet or in your local auto 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 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 gone out and you're not able to unlock your car. It's simple to replace the battery yourself and save money at the dealer.

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 an opening on both sides of the case. Use the screwdriver's flathead to push it into one of these slots. Then, gently take apart the two halves of the case. Once the battery is fully exposed, remove the case and put it in a place where you won't forget it.

Be sure to bring a new battery ready prior to beginning. They can be found at any store that stocks batteries or at an Mazda dealer near Winter Garden. The right kind of battery is vital to ensure that your keyfob works properly.


Then, place the new battery in its place and then replace the cap of the battery. Be careful not damage the rubber ring on which the battery rests. The two halves should be pressed together until you can hear the click.

How do I reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also a security feature. If you lose your key or had it stolen the car won't start even if you've got the spare fob. mazda bt50 key replacement is because the key fob needs to be reset at the dealership to work properly. It can be a stressful and costly ordeal. So, it's best to understand how you can reset the system.

To reset the system, remove the battery for approximately 15 minutes. This will eliminate any remaining electricity from the on-board computer. Next, disconnect both the LF-ECU connector and the demand switch connectors. Check continuity between the following terminals.

Place the key in the slot, then switch the ignition on. The ignition should be turned off after approximately five seconds. The key's information is added to the vehicle's computer and the new fob is able to start your car. You can program as many fobs you want however only one should be used at any particular time. This will stop unauthorized individuals from stealing your keys and gaining access to your car. You can purchase a brand new key fob on the internet, but you'll still need to go to a dealer or locksmith to get it cut and programmed.