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

Whether you dropped your key fob on the ground or it simply stopped working, it's always recommended to keep an extra key available. This article will go over everything you should be aware of when adding, changing, or changing your Mazda 3 key fobs.

Note: Some keys require programming from an expert locksmith, while others don't. Only use genuine Mazda replacements to replace your key fob.

How to add a spare key

If you're unable to receive a spare keys from the dealership when you buy your mazda car key replacement 3 or accidentally break your current one do not fret -- there's a way to add another key. You'll need a flathead screwdriver and the CR2025 replacement battery. Once you have these items and are ready to access the key fob and replace the battery. Find the auxiliary key release. The button is on the underside the metal part. It's easy to find. Once you hit the button, the back cover should slide off immediately. Next, place the screwdriver's head into the notch or the space at the top of the metal part and pull it away.

Insert the spare or new key into the slot after taking out the auxiliary 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 begin your vehicle in the future.

It is only possible to program three keys in your Mazda 3. The final thing you want is to have more than two functioning key fobs, and not be in a position 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 starting your car.

How to Reprogram a spare key

It's a smart idea to be aware of how to reprogram a spare key in the event that your original key is lost or stolen. This will keep unauthorised persons from starting your car or stealing it. This process is compatible with any Mazda, though you'll need two working keys to begin the reprogramming process. If you don't have two keys that function then it's best to bring your Mazda to the dealer to get this completed.

Begin by putting yourself in the driver's seat, and close the door, except for the one that's already opened. Place the working key in the slot, and then turn the ignition to ON. After five seconds, remove the key. Repeat the process with the second key.

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

It's a good idea to buy a spare mazda 6 key 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. It's possible to find one on the internet or at your local automobile store, but be sure to read reviews before buying so that you can avoid purchasing 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 in your key fob has died and you can't unlock your car. It's not a problem to replace the battery and save some cash at the dealership.

Press the auxiliary key button on the back of the keyfob. This will detach the key's metal cover and reveal the slots on both sides of the case. Put the flathead into one of these slots, and then gently pull the two halves of the case apart. Once the battery is fully exposed, remove the case and put it somewhere you will not forget it.

Before you start, make sure that you have a brand new replacement battery. These batteries can be purchased at any store that sells batteries or from a Mazda dealer in Winter Garden. Using the correct type of battery will ensure that your key fob operates effectively.

Replace the battery cap and then insert the new battery. Be careful not to damage the small rubber ring that the battery is placed on. The two halves should be pressed together until you hear a click.

How can I reset the Keyless Entry System

The Mazda 3 key fob is not just a convenient feature. It also serves as an element of security. If you lost your key or had it stolen the car will not start, even if you have the spare key fob. This is because the key fob needs to be reset at the dealership in order to work properly. This can be an expensive and stressful experience It's a good idea to understand how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will erase any residual electrical power in the on-board computer. Then, disconnect both the LF-ECU and demand switch connectors. Check for continuity between the terminals.

To program a new key, or a spare, place it in the slot and turn the ignition to ON. Leave the key in for about five seconds, then switch it off. The key information will now be saved to your car's computer, and the new fob will be able start your vehicle in the future. You can program as many fobs you desire, but only one should be used at any given time. This prevents unauthorized people from copying your key and getting ahold of your car. You can purchase a replacement keyfob online, but it'll still need to be programmed and cut by an authorized dealer.