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

It's a good idea to have an extra key on hand no matter if you've dropped the keyfob you were using or it has stopped working. This article will cover everything you should be aware of when adding, changing, or reprogramming your mazda 3 Keys 3 key fobs.

A word of warning Certain keys require programming by a professional locksmith or dealer, whereas other keys do not. Make sure you only use official Mazda replacements for your key fob.

How do I add a spare key?

If you're unable to receive a spare keys from the dealership when you buy your Mazda 3 or accidentally break the one you have Don't fret, there is still an option to get another key. To accomplish this, you'll require a small screwdriver with a flat head and an CR2025 battery that's new. Once you've got the tools you can open up the key fob and replace the battery. Locate the key release auxiliary. The button is on the underside the metal part. It's easy to find. When you hit the button, the back cover should slide off immediately. Next, place the head of the screwdriver into the notch, or the spacing on the top of the metal part and then pull it off.

Insert your new or spare key into the slot after removing the accessory key. Set the ignition to ON and wait for about five seconds before turning it to off. This will add the new key's information into the system, allowing it to start your vehicle in the future.

You can only program three keys to your Mazda 3. You don't want to use more than two key fobs in order to start your vehicle. This is a safety measure that is designed to block unauthorized users, such as valet drivers from activating your key and starting your car.

How to Reprogram a spare key

If you have a spare key, it's a good idea know how to program it in the event the original key you had is lost or stolen. This will prevent unauthorized people from starting your vehicle or taking it. This method should work on any Mazda but you'll need two working keys to start the process of reprogramming. If you don't have two functioning keys, you'll have to take your vehicle to a dealer to get it done.

Begin by getting in your driver's seat and closing the door, except for the one that's been opened. Turn the ignition on and insert the first working key. Wait five seconds before removing the key. Repeat with the second key.

After you've completed programming your new key, you should have three keys that you can use to start your car in the future. Before saving each key, be sure it's functioning correctly.

It is advisable to purchase an extra Mazda 3 remote, especially in cases where your car is prone to problems. You can purchase one online or in your local automotive store. Make sure you review the reviews before buying to ensure you don't buy a key fob which isn't compatible with your vehicle.

How do you change the battery using a spare key

There's nothing worse than finding that your key fob battery has gone out and you're not able to unlock your car. Luckily, it's easy to replace the battery and save some money at the dealer.

The first step is to press the auxiliary key button that is located on the back of the key fob. This will detach the metal key and reveal the slots on both sides of the case. Press the flathead into one of these slots, and gently pry the two halves apart. Once the battery is fully exposed, remove it and put it away somewhere that you won't forget about it.

Before you begin, be sure you have a brand new replacement battery. They are available in any store that sells batteries or at a Mazda dealer near Winter Garden. The right kind of battery is crucial to make sure that your keyfob functions properly.

Replace the cap on the battery and then put in the new battery. Be careful not to damage the small rubber ring the battery is placed on. The two halves should be pressed together until you hear the click.

How to Reset the Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also an important 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 needs to be reset by the dealer to enable it to function again. This could be a costly and frustrating ordeal therefore it's a great idea to know how to reset the system yourself.

To reset the system, remove the battery for approximately 15 minutes. This will eliminate any remaining electrical current from the computer on board. Next, disconnect both the LF-ECU connector as well as the demand switch connectors. Verify the continuity between the next terminals.

Put the key in the slot and turn the ignition ON. Switch off the ignition after about five minutes. The key's details will be added to the vehicle'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 prevents unauthorized people from copying your key and getting ahold of your vehicle. You can purchase a replacement keyfob from the internet, however it must be cut and programmed by a dealer.