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

Whether you dropped your key fob on the floor or it stopped working, it's always best to have an extra key in your pocket. This article will explain everything you must be aware of when adding, changing, or reprogramming your mazda 3 key replacement cost 3 key fobs.

Note: Some keys require programming from a professional locksmith, while others do not. Make sure you use only genuine Mazda replacements to replace your key fob.

How do I add a spare key?

You can add another key in the event that you don't have a spare key available or in the event that you break your existing one. To accomplish this, you'll require a small flathead screwdriver and a new CR2025 battery. Once you've got all the equipment and tools, you're ready to open the key fob. First look for the auxiliary key release button. It's on the underside of the metal piece and is easy to locate. The back cover should come off the moment you press the button. Then, insert the screwdriver's head into the notch at the top or into the space and remove the metal part.

After the auxiliary key has been removed, insert your new or spare key into the slot. Turn on the ignition and wait for approximately five seconds, then turn it to off. This will register the new key's details to the system that will allow it to start your car in the future.

It is important to remember that you can only program up to three keys on your Mazda 3. The final thing you want is to have more than two functioning key fobs and not being in a position to get your vehicle started. This is a security measure designed to prevent unauthorised users, such as valet drivers who are not authorized to use your key and thereby launching your vehicle.

How to Reprogram a Spare Key

It's a smart idea be aware of how to reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This procedure should work with any mazda 2 car key however you'll need two working keys to start the reprogramming process. If you don't have two keys that function, you should take your vehicle to a dealer to have this completed.

Start by stepping into the driver's seat and closing all the doors except the one that is open. Place the first working key into the slot, and then turn the ignition to ON. After five seconds, take the key out and repeat the process with the second key.

Once you've programmed your new key, you should have three working keys you can use to start your car in the future. Check each key to make sure that they're functioning properly before placing them away.

It's a good idea to purchase a spare Mazda 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. You can purchase one on the internet or in your local auto store. Make sure to read reviews before purchasing to ensure that you don't get one that's not compatible with your car.

How to Change the Battery on a Spare Key

There's nothing more frustrating than discovering that your key fob battery has gone out and you're not able to unlock your vehicle. Luckily, it's easy to replace the battery and save some money at the dealership.

Press the auxiliary key button at the back of the keyfob. This will take out the metal key auxiliary to reveal two slots on the sides of the case. Press the flathead screwdriver into one of these slots, and 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 safe from being lost.

Before you begin, make sure that you have a brand new replacement mazda key fob battery. These batteries can be purchased from any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is crucial to ensure that your keyfob works properly.

Then, place the new battery in the correct place and replace the cap of the battery. Be careful not to scratch the small rubber ring that the battery rests on. Press the two halves together until you can hear the click.

How do I reset the Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also a security feature. The car will not start if the key is stolen or lost, even if you've got a spare fob. The key fob has to be reset by the dealer to make it work again. This can be a painful and costly process. Therefore, it's recommended to understand how you can reset the system.

To reset the system, unplug the battery for 15 minutes. This will erase any residual electrical power in the on-board computer. Next, disconnect both the connectors for the LF-ECU and the demand switch connectors. Then, verify the continuity between the following terminals:

Insert the key into the slot, then turn on the ignition. Put the key in for about five seconds, then turn it off. The key's details will be added to your vehicle's computer and the new fob will be able to start your car in the future. You can program as many fobs as want but only one can be utilized at any certain time. This will prevent unauthorized persons from copying the key and gaining access to your car. You can purchase a replacement key for mazda 2 key fob online, but you'll need to visit an authorized locksmith or dealer to have it cut and programmed.