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

It's a good idea to keep a spare key on hand regardless of whether you lost your keyfob or it stopped working. This article will teach you how to add, change and re-programme your mazda 3 key fob replacement 3 keyfobs.

Be aware that some keys require programming from an experienced locksmith, whereas others do not. Make sure you use only genuine Mazda replacements to replace your key fob.

How to Add a Spare Key

You can add an additional key in case you don't have a spare key or when you accidentally damage the one you already have. To do this, you'll need a small flathead screwdriver and the new CR2025 batteries. Once you've got these items and tools, you're ready to open the key fob. First find the key release button for the auxiliary key. It's located on the bottom of the metal part. It's easy to find. When you press the button, the cover should slide off immediately. Then, place the screwdriver's head in the notch at the top or the space and take the metal part away.

After the auxiliary keys are removed, insert your new or spare key into the slot. Set the ignition to ON, and wait for about five seconds before setting it to OFF. This will register the new key's details to the system and allow it to start your car in the future.

It is only possible to program three keys on your Mazda 3. The one thing you don't want is to have more than two working key fobs, and not be in a position to get your car started. This is a safeguard to stop unauthorized users from activating your keys and starting your vehicle.

How to Reprogram a spare key

If you have a spare key it's important to know how to program it if your original key gets stolen or lost. This will keep unauthorized people from stealing your car and starting it. This process is compatible with any Mazda but you'll need two keys working to begin the process of reprogramming. If you don't have the two working keys, you'll need take your vehicle to the dealership to have it done.

Begin by stepping into the driver's position, and closing all the doors except the one that is open. Set the ignition to ON and insert the initial working key. After five seconds, remove the key. Repeat the process with the second key.

After you've completed programming your new key, you'll have three keys that you can use to start your vehicle in the future. Test each key to make sure that they're working properly before placing them away.

You should think about purchasing an extra Mazda 3 remote, especially in the event that your vehicle is prone to issues. You can buy one online or at your local automobile store, but make sure to read the reviews before buying so you aren't buying one that's not compatible with your vehicle.

How do you change the battery with a spare key?

There's nothing worse than finding that the battery on your key fob died and you can't unlock your car. It's not a problem to replace the battery and save some money at the dealer.

Press the auxiliary key button on the back of the keyfob. This will release the metal auxiliary key and expose slots on both sides of the case. Press the flathead screwdriver into one of these slots and gently remove the two halves of the case. When the battery is completely exposed, remove it and set aside the case somewhere that you won't forget about it.

Before you start, make sure you have a new replacement battery. These batteries can be purchased from any store that sells batteries or from a Mazda dealer in Winter Garden. Choosing the right battery will ensure that your key fob functions correctly.

Replace the cap on the battery, and then put in the new battery. Be careful not to damage the small rubber ring the battery rests on. Finally press the two parts of the key fob together until you hear an audible click.

How to Reset the Keyless Entry System

The mazda key (http://littleyaksa.Yodev.net/bbs/board.php?bo_table=free&wr_id=4791356) 3 key fob is not just a piece of equipment for convenience. It's also a security measure. If you lose your key or had it stolen the car will not start even if you've got the spare fob. The key fob should be reset by the dealer to enable it to function again. This can be a painful and expensive ordeal. Therefore, it's recommended to know how to reset the system.

To reset the system, remove the battery for 15 minutes. This will eliminate any remaining power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. After that, test for continuity between the following terminals:

To program a new key, or a spare, insert it into the slot and turn the ignition to ON. Stop the ignition after approximately five seconds. The information from the key will be added to the vehicle's computer and the new fob will be able start your car in the future. You can program as many fobs as need, but only one should be used at any specific time. This prevents unauthorized people from copying the key and getting ahold of your car. You can buy a new keyfob online, but it'll still need to be cut and programmed by an authorized dealer.