Where Will Mazda 6 Key Be One Year From Today? How to Add, Change, and Reprogram a Mazda 3 Spare Key


It's a good idea to have a spare key on hand no matter if you've dropped your keyfob, or it was unable to function. This article will explain everything you must learn about adding, changing, or programming your Mazda 3 key fobs.

A word of warning Certain keys require programming by a professional locksmith or dealer, while others do not. Make sure you only use official Mazda replacements for your key fob.

How to add a spare key

If you're unable to find a spare key from the dealership when you buy your Mazda 3 or accidentally break your current one Don't fret, there's still a way to add another key. To accomplish this, you'll need an incredibly small screwdriver, a flathead screwdriver, and an CR2025 battery that's new. Once you have the items then it's time to open the key fob. First look for the auxiliary key release button. It's located underneath the metal piece and is easy to locate. Once you hit the button, the back cover should slide off immediately. Then, insert the screwdriver head into the notch on top or into the space and pry the metal part off.

Insert the spare or new key into the slot after taking out the additional key. Turn on the ignition and wait for about five seconds, then turn it to OFF. This will register the new information on the key to the system, allowing it to start your car in the future.

You can only program three keys into your Mazda 3. You don't want to have to use more than two key fobs to start your car. This is a security measure designed to prevent unauthorised users, like valet drivers, from activating your key and thereby launching your vehicle.

How to Reprogram a spare key

If you have a spare key, it's best to be aware of how to program it in the event the original key you had is stolen or lost. This will keep unauthorised persons from starting your car, or taking it. This procedure should work with any Mazda however, you'll require two working keys to begin the reprogramming. If you don't own two working keys, you should take your Mazda to the dealer to get this done.

Start by stepping into the driver's seat, close all the doors with the exception of the one that is open. Put the first working key in the slot, and then turn the ignition to ON. Wait five seconds before removing the key. Repeat with the second key.

Once you've completed programming your new key, you should have 3 keys that will work to start your vehicle in the future. Test each key to make sure that they're working properly before putting them away.

You should think about purchasing a spare Mazda 3 remote, especially when your car is susceptible to issues. You can purchase one online or at your local auto store, but make sure to read the reviews before buying so that you aren't purchasing one that's not compatible with your car.

How do you change the battery using a spare key

It's awful to discover that your key fob has failed, and you are locked out of your vehicle. Luckily, it's easy to replace the battery and save yourself some money at the dealer.

Press the auxiliary button on the back of the keyfob. This will remove the key from the metal and reveal two slots on the opposite side of the case. Put the flathead screwdriver in one of these slots, and gently pry apart the two parts of the case. Once the battery is fully exposed, remove it and set aside the case somewhere that you won't forget about it.

Be sure to have an extra battery in place prior to beginning. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. Choosing new mazda key G28 will ensure that your key fob functions properly.

Replace the cap on the battery, and then insert the new battery. Be careful not to scratch the small rubber ring the battery rests on. Finally, press the two halves of the key fob until you hear the sound of a click.

How do I reset the Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It's also a security measure. The car will not start if the key is lost or stolen even if you have a spare fob. The key fob has to be reset by the dealer to enable it to function again. It's a difficult and costly ordeal. So, it's best to learn how to reset the system.

Disconnect the battery from the system for 15 minutes. This will take out any remaining electricity from the onboard computer. Next, disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:

To program the new key or spare, insert it into the slot and turn the ignition to ON. Leave the key in for about five seconds, then turn off. The key information will now be saved to your car's computer and the new fob will be able to start your car in the future. You can program up to three fobs, however, you should only use one at a time. This will stop unauthorised people from copying the key and gaining access to your vehicle. You can purchase a replacement key fob online, but you'll still have to visit an expert locksmith or dealer to cut it and programmed.