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

If you've dropped your key fob on the ground or it has stopped working, it's always an excellent idea to keep an extra key available. This article will teach you how to add, modify or reprogramme the 2010 mazda 3 key fob programming 3 keyfobs.

Be aware that some keys require programming from an experienced locksmith, whereas others don't. Make sure you only use official Mazda replacements for your key fob.

How to add an additional key

You can add a second key if you don't have a spare key, or if you accidentally break your existing one. To do this, you'll need an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you have these items then it's time to open the key fob and replace the battery. First find the button that allows you to release the key. It's located on the underside of the metal portion and is easy to find. Once you hit the button, the cover should be removed immediately. Then, you can insert the screwdriver's head into the notch at the top or the space, and take the metal part away.

Insert the spare or new mazda car key key into the slot after removing the secondary key. Set the ignition to ON, and wait about five seconds before setting it to OFF. This will register the new key's details to the system that will allow it to start your vehicle in the future.

You can only program three keys to your Mazda 3. You don't want to have to utilize more than two key fobs in order to start your vehicle. This is a safety measure designed to prevent unauthorised users, like valet drivers, from activating your key and thereby launching your vehicle.

How to Reprogram a spare key

If you have a spare key, it's important to know how to program it in the event your original key gets stolen or lost. This will prevent unauthorized people from starting your car or stealing it. This process should work on any Mazda, though you'll need two keys that work to begin the process of reprogramming. If you don't have the two working keys, you'll need to bring your car to the dealership to get it done.

Start by getting into the driver's seat, close all the doors with the exception of the one that is open. Turn the ignition on and insert the first working key. After five seconds, remove the key and repeat the procedure with the second working key.

After you finish programming your new key mazda, you'll have 3 keys that will start your vehicle in the future. Before saving each key, be sure that it's working correctly.

It's a good idea to purchase a spare mazda 6 key replacement cost 3 key fob, especially if your car is one who often loses your key or has other issues with it. You can find one online or at your local auto retailer, but make sure to read reviews prior to purchasing so you aren't buying one that's not compatible with your vehicle.

How to Change the Battery on a spare key

It's depressing to find out that your key fob is dead, and you are in a position to not unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.

The first step is to press the auxiliary key button located on the back of the key fob. This will take out the metal key and reveal a slot on each side of the case. Put the flathead screwdriver in one of these slots. Then, gently pry apart the two parts of the case. When the battery is completely exposed, remove it and place it in a safe place somewhere you won't forget it.

Be sure to have a new battery ready prior to beginning. You can find these at any store that stocks batteries or at a Mazda dealer close to Winter Garden. The right kind of battery is crucial to ensure that your key fob functions properly.

Replace the cap on the battery and then replace the battery. Be careful not to damage the small rubber ring the battery sits on. Finally press the two halves of the key fob until you hear a click.

How to Reset a Keyless Entry System

The key fob on 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 will not start, even if you have the spare key fob. The key fob has to be reset by the dealer to allow it to work again. It's a difficult and costly process. Therefore, it's recommended to learn how to reset the system.

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

Put the key in the slot and turn on the ignition. Switch off the ignition after about five minutes. The key's information will be transferred to your vehicle's computer and the new fob will be able start your vehicle in the future. You can program up to three fobs but you should only use one at a time. This will keep unauthorised individuals from stealing your key and getting access to your car. You can purchase a replacement key for mazda 2 key fob online, however you'll still have to visit an authorized locksmith or dealer to have it cut and programmed.