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

It's a good idea always to have an extra key on hand no matter if you've dropped the keyfob you were using or it stopped working. This article will cover everything you must be aware of when the process of adding, changing, and programming your mazda 6 Key 3 key fobs.

Certain keys require programming from an expert locksmith, while others don't. Only use official Mazda replacements to replace your key fob.

How do you add an additional key

If you're not fortunate enough to receive a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one, don't worry -- there is still the option of adding another key. You'll need to use an flat-head screwdriver and an CR2025 battery. Once you've got the tools you can remove the key fob and replace the battery. Find the key release auxiliary. It's located on the underside of the metal part and is easy to find. The back cover should come off the moment you press the button. Then, you can insert the screwdriver's head into the notch or the space on the top of the metal component and pull it away.

After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition ON and wait for five seconds, then turn it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.

You can only program three keys on 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 vehicle started. This is a security precaution that is designed to block unauthorized users, such as valet drivers from activating your key and starting your vehicle.

How to reprogram an unrepaired key

It's a good idea to know how to reprogram a spare key in the event that your original key gets lost or stolen. This will prevent unauthorized people from starting your car or stealing it. This will work with any mazda 2 spare key. You'll require two keys that are functioning to begin the reprogramming. If you don't own two working keys, you'll need bring your car to the dealership to have it done.

Begin by stepping into your driver's seat, and close the door, with the exception for the one that's opened. Set the ignition to ON and insert the first working key. Take five seconds before removing the key. Repeat with the second key.

Once you've finished programming your new key, you should have three keys that you can use to start your car in the future. Check each key to make sure that they're operating correctly before placing them away.

It is advisable to purchase a spare Mazda 3 remote, especially when your car is susceptible to issues. You can purchase one on the internet or in your local auto store. Make sure to look up reviews before you purchase to ensure you don't buy the wrong key fob that isn't 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're in a position to not unlock your vehicle. It's not a problem to replace the battery and save yourself some money at the dealer.

The first step is to press the auxiliary button on the back of the key fob. This will remove the key auxiliary and reveal a slot on both sides of the case. Press the flathead into one of these slots, and gently pry the two halves apart. After the battery is fully exposed, remove the case and place it somewhere you will not forget about it.

Be sure to have an additional battery before you begin. You can purchase them in any store that sells batteries or at a 2017 mazda 3 key fob programming dealer close to Winter Garden. Choosing the correct battery will ensure that your key fob functions effectively.

Next, put the new battery in the correct place and replace the cap of the battery. Be careful not to scratch the small rubber ring the battery rests on. Finally, press the two parts of the key fob until you hear the sound of clicking.

How do I reset the Keyless Entry System

The mazda cx 5 keys locked in car 3 key fob is not just a convenient feature. It also serves as an element of security. The car will not start if your key is lost or stolen, even if you've got an extra fob. The key fob has to be reprogrammed by the dealer to make it work again. It can be a frustrating and costly ordeal. Therefore, it's recommended to learn how to reset the system.

To reset the system, remove the battery for about 15 minutes. This will clear any residual electrical current from the computer on board. Then, disconnect the LF-ECU connector and the demand switch connectors. Check for continuity between the terminals.

Put the key in the slot, then turn on the ignition. Turn off the ignition after about five seconds. The key information is now added to the vehicle's computer and the new fob will start your car. You can program up to three fobs but you must only use one at each time. This will stop unauthorized individuals from stealing your keys and gaining access to your car. You can purchase a brand new keyfob online, however it must be programmed and cut by an authorized dealer.