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

It's a good idea to keep an extra key at hand, whether you dropped your keyfob or it was unable to function. This article will teach you how to add, change, and reprogramme your Mazda spare key replacement 3 keyfobs.

Note: Some keys require programming by a professional locksmith, while others don't. Only use official Mazda replacements to replace your key fob.

How to add a spare key

You can also add an additional key if you don't have a spare key or when you accidentally damage your existing one. You'll need to use a flathead screwdriver, and the CR2025 replacement battery. Once you've got the tools, it is time to open the key fob. First look for the key release button for the auxiliary key. It's on the underside of the metal piece and is easy to find. The cover that covers the back should come off as soon as you press the button. Next, insert the screwdriver's head into the notch or the space at the top of the metal component and pry it off.

Insert your spare or new key into the slot following the removal of the accessory key. Turn on the ignition and wait for approximately five seconds, and then turn it to off. This will register the new information on the key to the system and allow it to start your vehicle in the future.

It is important to remember that you can only program up to three keys for your Mazda 3. The last thing you want is to have more than two working key fobs, and not be in a position to get your vehicle started. This is a safeguard to stop anyone who is not authorized from activating your keys and launching your car.

How to Reprogram a Spare Key

It's a smart idea be aware of how do i get a replacement mazda key to reprogram a spare key in the event that your original key becomes lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This should work with any mazda 5 key fob. You will need two keys that are functioning to begin the reprogramming process. If you don't have two keys that work it's recommended to take your car to a dealer to have this completed.

Begin by getting in your driver's seat, and shutting the door, excluding for the one that's already opened. Set the ignition to ON and insert the first working key. For five seconds, remove the key and repeat the procedure with the second key.

Once you've completed programming your new key, you'll have 3 keys that will allow you to start your car in the future. Check each key to make sure that they're functioning properly before taking them off.

It is advisable to purchase an extra Mazda 3 remote, especially if your car is prone to problems. You can buy one online or at your local auto retailer, but make sure to read reviews before buying so you can avoid purchasing the wrong key fob compatible with your vehicle.

How to change the Battery on a spare Key

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

The first step is to press the auxiliary key button that is located on the back of the key fob. This will release the key's metal cover and reveal the slots on both sides of the case. Insert the flathead screwdriver into one of these slots and gently take apart the two halves of the case. Once the battery is fully exposed, remove it and put it away somewhere you won't forget it.

Be sure to have a new battery ready before you start. You can purchase them at any store that stocks batteries or at a Mazda dealer near Winter Garden. Choosing the right battery will ensure that your key fob operates effectively.

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

How to Reset a Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It also serves as a security feature. The car will not start if your key is stolen or lost, even if you've got an extra key fob. This is because the key fob has to be reset at the dealership to work once more. It can be a stressful and costly ordeal. Therefore, it's recommended to know how to reset the system.

Remove the battery from the system for 15 minutes. This will erase any residual electricity in the on-board computer. Next, disconnect both the LF-ECU and demand switch connectors. Check for continuity between the following terminals:

Place the key in the slot, then switch the ignition on. Turn off the ignition after about five seconds. The key's information will be saved to your car's computer, and the new mazda key cost fob will be able to start your vehicle in the future. You can program as many fobs as you desire, but only one should be in use at any given time. This will keep unauthorised individuals from stealing your key and gaining access to your car. You can purchase a brand new keyfob online, however it'll still need to be cut and programmed by an authorized dealer.