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

It's a good idea always to have an extra key in your pocket, whether you dropped your keyfob or it was unable to function. This article will tell you how to add, modify, and reprogramme your Mazda 3 keyfobs.

A word of caution Certain keys require programming by a locksmith professional or dealer, whereas other keys don't. Only use authentic mazda locked keys in car 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 dealer when you purchase your Mazda 3 or accidentally break the one you have Don't fret, there's the option of adding another key. You'll need an flat-head screwdriver and an CR2025 battery. Once you've got these items you can open the key fob and swap the battery. First find the key release button for the auxiliary key. The button is located on the bottom of the metal part. It's easy to find. When you hit the button, the cover should fall off right away. Then, place the screwdriver head into the notch at the top or into the space and take the metal part away.

Insert your new or spare key into the slot after you have removed the auxiliary key. Turn the ignition on and wait for approximately five seconds, then turn it to off. This will add the new key's information to the system that will allow it to start your car in the future.

It is only possible to program three keys into your Mazda 3. The last thing you want is to have more than two functioning key fobs but not be able to get your car started. This is a safety precaution that is designed to block unauthorized users, such as valet drivers from activating your key and thereby launching your vehicle.

How to Reprogram a spare key

It's smart to know how you can reprogram a spare key in the event that your original key becomes lost or stolen. This will prevent unauthorized people from starting your car, or taking it. This will work with any Mazda. You will require two keys that are functioning to begin the reprogramming process. If you don't have two working keys, you'll need to take your vehicle to the dealer to get it done.

Begin by stepping into your driver's seat, and closing the door, except for the one that's been opened. Place the first working key in the slot, then turn the ignition to the ON position. For five seconds, take the key out and repeat the process with a second key.

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

You should think about purchasing a spare 2016 Mazda 3 Key Fob Programming 3 remote, especially if your car is prone to problems. You can purchase one on the internet or at a local automotive store. Make sure to review the reviews before buying to ensure that you don't get a key fob which isn't compatible with your vehicle.

How do you change the battery using a spare key

It's depressing to find out that the key fob you used to use has gone out, and you are unable to unlock your vehicle. It's a good thing that it's simple to replace the battery and save yourself some money at the dealer.

Press the auxiliary button on the back of the keyfob. This will take out the metal auxiliary key and expose an opening on both sides of the case. The flathead should be inserted into one of these slots and then gently pull the two halves of the case 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. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is crucial to make sure that your keyfob functions properly.

Replace the cap on the battery, and then install the new battery. Be careful not to scratch the small rubber ring the battery sits on. Press the two halves together until you can hear the click.

How do I reset a Keyless Entry System

The Mazda 3 key fob is not just a convenience. It also serves as an important security feature. The car will not start if the key is lost or stolen even if you have a spare fob. The key fob must be reprogrammed by a dealer to make it work again. This could be a costly and time-consuming process therefore it's a great idea to know how to reset the system yourself.

To reset the system, disconnect the battery for around 15 minutes. This will take out any remaining electricity from the onboard computer. Then, disconnect both LF-ECU and demand switch connectors. Then, check continuity between the following terminals:

To program an entirely new key or spare, place it in the slot and turn the ignition to ON. Leave the key in for about five seconds and then switch off. The key's information has been added to the vehicle's computer and the new fob is able to start your car. You can program up to three fobs, however, you should only use one at a time. This stops unauthorized individuals from copying your key and getting ahold of your vehicle. You can purchase a new key fob online, however you'll need to visit a locksmith or dealer in order to have it cut and programmed.