How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key in your pocket in case you lose your keyfob or it has stopped working. This article will cover everything you should know about adding, changing, or changing your Mazda 3 key fobs.
Certain keys require programming from professional locksmiths, while others do not. Make sure you use only genuine Mazda replacements to replace your key fob.
How to add an extra 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 do not fret -- there's still an option to make another key. To do this, you'll need a small screwdriver with a flat head and an CR2025 battery that's new. Once you've got these tools you can access the key fob and swap the battery. First, locate the key release button for the auxiliary key. It's located under the metal part and is easy to locate. Once you hit the button, the cover should be removed immediately. Then, insert the screwdriver's head into the notch or space at the top of the metal component and pry it off.
After the auxiliary keys are removed, insert your new or spare key into the slot. Set the ignition ON and wait for about five seconds, and then turn it to OFF. This will add the new key's information into the system, allowing it to start your vehicle in the future.
It is only possible to program three keys to your Mazda 3. You don't want to have to use more than two key fobs to start your vehicle. This is a safeguard to stop anyone who is not authorized from activating your key fobs and starting your vehicle.
How to Reprogram a spare key
It's a good idea to learn how you can reprogram a spare key in the event that your original key is lost or stolen. This will prevent unauthorized people from starting your vehicle or stealing it. This process should work on any Mazda, though you'll need two keys that work to begin the reprogramming. If you don't have two functioning keys, you'll have to bring your vehicle to the dealer to get it done.
Start by stepping into driver's seat and closing all the doors except the one that is open. Place the first working key in the slot, then turn the ignition to ON. For five seconds, take the key out and repeat the process with a second key.
Once you've completed programming your new key, you'll have 3 keys that allow you to start your car in the near future. Test each key to make sure that they're operating correctly before throwing them away.
You should think about buying an extra Mazda 3 remote, especially if your car is prone to issues. It's possible to find one on the internet or at your local auto store, but be sure to read the reviews before buying so that you aren't purchasing an item that isn't compatible with your car.
How do mazda replacement key change the battery using a spare key
There's nothing more frustrating than finding that your key fob battery has been damaged and you're unable to unlock your car. Luckily, it's easy to replace the battery and save yourself some money at the dealership.
The first step is to press the auxiliary button on the back of the key fob. This will remove the key that is used as an auxiliary key, and expose a slot on both sides of the case. Place the flathead in one of these slots, and then gently pry the two halves apart. After the battery is fully exposed, remove the case and put it somewhere you will not forget it.
Be sure to have an additional battery prior to starting. They can be found at any store that sells batteries or at a Mazda dealer close to Winter Garden. Using the right type of battery will ensure that your key fob operates properly.
Replace the cap of the battery and then insert the new battery. Be careful not to scratch the rubber ring that holds the battery. Then press the two halves of the key fob until you hear a click.
How do you reset the Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It also serves as a security measure. If you lose your key or had it stolen, the car will not start even if it has the spare fob. The key fob has to be reset by the dealer to make it work again. It can be a frustrating and expensive ordeal. Therefore, it's best to know how to reset the system.
To reset the system, disconnect the battery for about 15 minutes. This will eliminate any remaining electricity from the on-board computer. Then, disconnect both LF-ECU connector and the demand switch connectors. Verify the continuity between the next terminals.
To program a new key or a spare, place it in the slot and set the ignition to ON. Turn off the ignition after approximately five minutes. The key's information has been added to the computer in your car and the new fob is able to start your vehicle. You can program up to three fobs, but you should only use one at each time. This will stop unauthorised people from copying your key and gaining access to your vehicle. You can purchase a replacement keyfob online, but it'll still need to be programmed and cut by an authorized dealer.