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

It's a good idea to keep a spare key on hand no matter if you've dropped your keyfob or it was unable to function. This article will explain how to add, modify or reprogramme the mazda key replacement near me 3 keyfobs.

A word of warning Some keys require programming by a professional locksmith or dealer, whereas other keys do not. Use only genuine Mazda replacements to replace your key fob.

How to add a spare key

You can also add an additional key in case you don't have a spare key available or when you accidentally damage your existing one. To do this, you'll need an incredibly small screwdriver, a flathead screwdriver, and the new CR2025 batteries. Once you've got these tools you can open up the key fob and replace the battery. First find the key release button for the auxiliary key. The button is located on the underside of the metal portion. It's easy to find. The cover on the back should fall off as soon as you press the button. Then, insert the screwdriver's tip into the notch at the top or in the space, and pull the metal piece off.

Once the auxiliary key is removed, insert your new or spare key into the slot. Turn on the ignition and wait for five seconds before turning it to OFF. This will register the new information on the key to the system which will allow it to start your vehicle in the future.

You can only program three keys on your Mazda 3. The one thing you don't want is to have more than two functioning key fobs and not be in a position to get your car started. This is a security measure designed to prevent unauthorised users, like valet drivers, from activating your key and thereby starting your car.

How to reprogram a spare key

It's a smart idea learn how you can reprogram an extra key in the event that your original key gets lost or stolen. This will stop unauthorized persons from starting your vehicle or stealing it. This process is compatible with any Mazda, though you'll need two working keys to start the reprogramming process. If you don't own two keys that work then it's best to bring your Mazda to the dealer to have this done.

Begin by stepping into the driver's seat and close all the doors with the exception of the one that is open. Insert the first working key into the slot, and then turn the ignition to ON. Wait five seconds, then remove the key and Mazda 3 spare key repeat with the second key.

After programming your new key, you'll have three keys that will work to start your vehicle in the future. Test each key to make sure that they're operating correctly before putting them away.

You should consider buying a spare Mazda 3 remote, especially if your car is prone to issues. You can purchase one on the internet or in your local automotive store. Be sure to read reviews before purchasing to ensure that you don't get the wrong key fob that isn't compatible with your car.

How to change the battery on a spare key

There's nothing more frustrating than finding that the battery in your key fob has been damaged and you're unable to unlock your car. It's simple to replace the battery yourself and save money at the dealership.

The first step is to press the auxiliary key button located on the back of the key fob. This will release the key made of metal and reveal a slot on each side of the case. Place the flathead in one of these slots, and gently pry the two halves apart. When the battery is completely exposed, remove it and set aside the case in a place where you will not forget it.

Make sure you have an additional battery before you start. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. Choosing the right battery will ensure that your key fob is working perfectly.

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

How can I reset the Keyless Entry System

The key fob that you have in your Mazda 3 is not only an extra convenience, but also an important security feature. If you lose your key or had it stolen the car won't start even if it has the spare key fob. The key fob should be reset by the dealer to allow it to work again. This can be an expensive and frustrating experience therefore it's a great idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will eliminate any remaining electrical current from the computer on board. Then, disconnect the connectors for the LF-ECU and the demand switch connectors. Verify that the connections are in good order between the terminals.

To program the new key or spare, insert it into the slot and set the ignition to ON. Turn off the ignition after about five seconds. The key's details will be added to the vehicle's computer and the new fob will be able to start your vehicle in the future. You can program up to three fobs, but you should only use one at one time. This will prevent unauthorized people from stealing your keys and getting access to your car. You can purchase a replacement keyfob online, but it must be cut and programmed by a dealer.