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

It's a good idea to have a spare key on hand, 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 warning Certain keys need to be programmed by a locksmith professional or dealer, while others do not. Make sure you use only official Mazda replacements to replace your key fob.

How to add a spare key

You can also add another key in the event that you don't have a spare key, or if you accidentally damage your existing one. You'll need a flathead screwdriver, and a CR2025 new battery. Once you've got all the equipment you need, it's time to open the key fob. First look for the auxiliary key release button. It's on the underside of the metal portion and is easy to find. When you press the button, the back cover will fall off instantly. Then, put the screwdriver's head in the notch on top or into the space and pull the metal piece off.

Insert the spare or new key into the slot after you have removed the secondary key. Switch the ignition on and wait for five seconds, and then turn it to off. This will allow the system to recognize the new key and start your vehicle in the future.

You can only program three keys in your Mazda 3. You don't want to utilize more than two key fobs in order to start your vehicle. This is a precautionary measure to stop unauthorised users from activating your keys and mazda 3 Spare Key starting your car.

How to Reprogram a Spare Key

It's smart to know how you can reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This procedure should work with any mazda replacement key, though you'll need two keys working to begin the reprogramming. If you don't have the two working keys, you'll have to take your vehicle to a dealer to get it done.

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

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

It's a good idea buy 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 purchase one online or at your local auto store. Be sure to look up reviews before you purchase to ensure that you don't purchase an item that isn't compatible with your car.

How to change the battery on a spare key?

There's nothing more frustrating than discovering that the battery for your key fob has gone out and you're not able to unlock your car. Luckily, it's easy to replace the battery and save some cash at the dealership.

The first step is to press the auxiliary button on the back of the key fob. This will detach the key from the metal and reveal two slots on the opposite side of the case. Put the flathead into one of these slots and gently pry the two halves apart. Once the battery is fully exposed, remove it and place the case somewhere safe from being lost.

Before you begin, be sure that you have a brand new replacement battery. They are available in any store that sells batteries or at an Mazda dealer near Winter Garden. Using the correct type of battery will ensure that your key fob is working properly.

Then, put the new battery into place and replace the battery cap. Be careful not to scratch the small rubber ring that the battery sits on. The two halves should be pressed together until you hear a click.

How to reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also a security feature. The car will not start if the key is lost or stolen even if you have an extra fob. The key fob should be reprogrammed by a dealer to allow it to work again. This can be an expensive and stressful experience and it's a good idea to learn how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will remove any remaining electric current from the onboard computer. Then, disconnect both LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

Insert the key into the slot, and switch on the ignition. The ignition should be turned off after approximately five minutes. The key's details will be transferred to your vehicle's computer, and the new fob will be able start your car in the future. You can program any number of fobs you desire however only one must be used at any specific time. This stops unauthorized individuals from copying the key and gaining access to your vehicle. You can purchase a replacement keyfob on the internet, but it will still need to be programmed and cut by a dealer.