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

It's a good idea always to keep an extra key at hand in case you lose your keyfob, or it has stopped working. This article will provide everything you should be aware of adding, changing, and programming your Mazda 3 key fobs.

Warning: Some keys require programming from professional locksmiths, while others do not. Be sure to only use genuine Mazda replacements for your key fob.

How to Add a Spare Key

If you're not lucky enough to receive a spare key from the dealer when you buy your Mazda 3 or accidentally break the one you have but don't worry, there's a way to add another key. To accomplish this, you'll require an incredibly small screwdriver, a flathead screwdriver, and an CR2025 battery that's new. Once you've got all the equipment you need, it's time to open the key fob. Locate the auxiliary key release. The button is beneath the metal portion. It's easy to find. The back cover should slide off the moment you press the button. Next, place the screwdriver's head into the notch or spacing at the top of the metal component and pry it off.

Insert your spare key or a new one into the slot following the removal of the auxiliary key. Set the ignition to ON, and wait about five seconds before turning it to off. This will allow the system to recognize the new key and start your vehicle in the future.

It is only possible to program three keys on your Mazda 3. You don't want to utilize more than two keys to start your car. This is a security measure designed to stop unauthorized users, such as valet drivers from activating your key and starting your vehicle.

How to Reprogram a Spare Key

If you have a spare key, it's best to be aware of how to program it in the event your original key gets lost or stolen. This will stop unauthorized persons from opening your car or stealing it. This process should work on any Mazda, though you'll need two working keys to begin the reprogramming process. If you don't have two working keys, you should take your Mazda to a dealer to get this completed.

Begin by getting in your driver's seat and close the door, with the exception for the one that's opened. Set the ignition to ON and then insert the first working key. Then wait five seconds before taking out the key. Repeat with the second key.

After programming your new key, you should have three keys that allow you to start your vehicle in the future. Before placing each key in storage, make sure it's working properly.

You should think about purchasing a spare mazda 5 key fob 3 remote, especially in cases where your car is prone to problems. You can purchase one online or at your local auto retailer, but make sure to read the reviews before purchasing so that you can avoid purchasing one that's not compatible with your vehicle.

How to change the battery on a spare key

There's nothing worse than discovering that the battery on your key fob died and you can't unlock your vehicle. Luckily, it's easy to replace the battery and save yourself some cash at the dealership.

The first step is to press the auxiliary button on the back of the key fob. This will detach the metal key and reveal a slot on each side of the case. Press the flathead into one of these slots and then gently pry the two halves of the case apart. Once the battery is fully exposed, take it out of the case and put it in a spot where you'll never forget about it.

Before you begin, be sure that you have a new replacement battery. They can be found in any store that sells batteries or at a Mazda dealer near Winter Garden. The correct type of battery is vital to ensure that your keyfob works properly.

Replace the cap on the battery, and then replace mazda key the battery. Be careful not to damage the rubber ring that holds the battery. Finally press the two parts of the key fob together until you hear the sound of a click.

How to Reset the Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also a security measure. If you lose your key, or have it stolen the car won't start, even if you have the spare key fob. The key fob has to be reprogrammed by the dealer to enable it to function again. This can be a painful and costly experience. So, it's best to understand how you can reset the system.

Remove the battery from the system for 15 minutes. This will clear any residual electrical current from the computer on board. Then, disconnect both the LF-ECU connector as well as the demand switch connectors. Then, verify the continuity between the following terminals:

Place the key into the slot, and switch the ignition on. Turn off the ignition after approximately five seconds. The information from the key will be saved to your car's computer, and the new fob will be able start your car in the future. You can program up to three fobs, however, you must only use one at a time. This will prevent unauthorised people from stealing your key and gaining access to your car. You can purchase a new keyfob online, but it will still need to be cut and programmed by a dealer.