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7 Simple Changes That Will Make The Difference With Your Mazda 6 Key
How to Add, Change, and Reprogram a Mazda 3 Spare Key


If you've dropped your key fob on the ground or it has stopped working, it's always recommended to keep a spare key on hand. This article will tell you how to add, change, and reprogramme your Mazda 3 keyfobs.

A word of warning Certain keys need to be programmed by a professional locksmith or dealer, whereas others do not. Be sure to only use genuine Mazda replacements for your key fob.

How to add an extra key

You can add an additional key in case you don't have a spare key available or if you accidentally damage your existing one. You'll need an flat-head screwdriver and a new CR2025 battery. Once you've got all the equipment and tools, you're ready to open the key fob. First find the key release button for the auxiliary key. It's located under the metal component and is easy to locate. The cover on the back should fall off the moment you press the button. Next, insert the head of the screwdriver into the notch or space on the top of the metal part and pull it off.

Insert your spare key or a new one into the slot after taking out the accessory key. Set the ignition to ON and wait for five seconds before setting it to off. This will allow the system to recognize the new key and start your vehicle in the future.

It is only possible to program three keys to your Mazda 3. The one thing you don't want is to have more than two working key fobs and not being in a position to get your car started. This is a safeguard to stop anyone who is not authorized from activating your keys and launching your vehicle.

How do you reprogram an unrepaired key?

It's smart to know how you can reprogram a spare key in the event that the original key is lost or stolen. This will stop unauthorised people from starting your vehicle or taking it. This process should work on any Mazda however you'll need two keys that work to begin the process of reprogramming. If you don't own two keys that function, you should take your Mazda to a dealer to have this completed.

Start by getting into the driver's position, and close all the doors, except the one that is open. Set the ignition to ON and insert the first functioning key. Then wait five seconds before taking out the key. Repeat the process with the second key.

After programming mazda 3 car key , you should have three keys that work to start your car in the future. Check each key to make sure they're working correctly before putting them away.

It's a good idea to buy 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 find one online or at your local automotive retailer, but make sure to read the reviews before buying so you can avoid getting the wrong key fob compatible with your car.

How to Change the Battery on a spare key

It's very frustrating to discover that your key fob has died and you're not able to unlock your car. 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 detach the key's metal cover and reveal a slot on each side of the case. Place the flathead in one of these slots and then gently pry the two halves apart. Once the battery is fully exposed, remove it and set aside the case somewhere you won't forget it.

Before you begin, be sure that you have a brand new replacement battery. You can purchase them in any store that sells batteries or at a Mazda dealer close to Winter Garden. Choosing the right battery will ensure that your key fob is working properly.

Replace the cap on the battery and then replace 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 to Reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also an important security feature. If you lose your key or have it stolen the car will not start even if you've got the spare key fob. This is because the fob that you have to be reset at the dealership in order to work again. This can be an expensive and frustrating experience and it's a good idea to know how to reset the system yourself.

To reset the system, unplug the battery for around 15 minutes. This will remove any residual electrical power in the on-board computer. Next, disconnect both the LF-ECU connector as well as the demand switch connectors. Then, check continuity between the following terminals:

Put the key in the slot, then switch the ignition on. Put the key in for about five seconds, then switch off. The key's details will be saved to your car's computer and the new fob will be able to start your car in the future. You can program as many fobs you need however only one must be used at a particular time. This prevents unauthorized people from copying your key and getting ahold of your car. You can buy a new key fob online, however you'll still need to go to an authorized locksmith or dealer to cut it and get it programmed.