Why Nobody Cares About Mazda 6 Key How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to keep an extra key on hand, whether you dropped your keyfob or it stopped working. This article will provide everything you must be aware of when adding, changing, or changing your Mazda 3 key fobs.

Certain keys require programming from an experienced locksmith, whereas others don't. Use only authentic Mazda replacements to replace your key fob.

How to add a spare key

If you're not fortunate 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 is still the option of adding another key. To accomplish this, you'll require an incredibly small screwdriver, a flathead screwdriver, and an CR2025 battery that's new. Once you've got all the equipment you need, it's time to open the key fob. Locate the key release auxiliary. It's on the underside of the metal portion and is easy to find. The cover on the back should fall off when you press the button. Next, place the screwdriver's head into the notch or the space on the top of the metal piece and pull it off.

After the auxiliary key has been removed, insert the new or spare key into the slot. Turn the ignition on and wait for approximately five seconds before turning it to off. This will register the new key's information into the system and allow it to start your car in the future.

It's important to note that you can only program up to three keys on your Mazda 3. The last thing you want is to have more than two functioning key fobs but 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 starting your car.

How to Reprogram a spare key

If you have a spare key, it's a good idea be aware of how to program it if the original key you had is stolen or lost. This will prevent unauthorized people from starting your car or taking it. This process is compatible with any Mazda however you'll need two keys that work to begin the reprogramming. If you don't have two keys that function then it's best to bring your car to a dealer to have this completed.

Begin by stepping into your driver's seat, and shutting the door, excluding for the one that's opened. Insert the first working key in the slot, then set the ignition to ON. mazda key replacement near me before removing the key. Repeat the process with the second key.

Once you've completed programming your new key, you'll have 3 keys that work to start your vehicle in the future. Test each key to ensure sure that they're operating correctly before putting them away.

It's a good idea to buy a spare Mazda 3 key fob, especially if you're someone who has a tendency to lose their keys or has other issues with it. You can buy one online or in your local auto store. Be sure to look up reviews before you purchase to ensure that you don't purchase one that's not compatible with your car.

How to change the battery on a spare key?

It's depressing to find out that the key fob you used to use has gone out, and you are in a position to not unlock your vehicle. It's simple to replace the battery yourself and save money at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will remove the metal key that is used as an auxiliary key, and expose two slots on the sides of the case. Press the flathead into one of these slots, and then gently pull 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 you have a new replacement battery. They can be found at any retailer that sells batteries or at an Mazda dealer close to Winter Garden. The correct type of battery is essential to make sure that your keyfob functions properly.

Replace the cap of the battery and then put in the new battery. Be careful not to scratch the rubber ring on which the battery rests. Then press the two halves of the key fob together until you hear the sound of clicking.

How to Reset the Keyless Entry System

The Mazda 3 key fob is not just a piece of equipment for convenience. It also serves as an element of security. The car won't start if the key is stolen or lost, even if you've got a spare key fob. The key fob should be reset by the dealer to enable it to function again. It can be a stressful and costly experience. Therefore, it's best to learn how you can reset the system.

To reset the system, remove the battery for approximately 15 minutes. This will eliminate any remaining electrical power in the on-board computer. Then, disconnect both the LF-ECU connector as well as the demand switch connectors. Check continuity between the following terminals.

Put the key in the slot and turn the ignition ON. Stop the ignition after about five minutes. The information from the key will be transferred to your vehicle's computer and the new fob will be able to start your vehicle in the future. You can program as many fobs you would like however only one should be utilized at any particular time. This will keep unauthorised individuals from stealing your keys and getting access to your car. You can buy a new key fob online, but you'll still have to visit a locksmith or dealer in order to cut it and programmed.