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Mazda 6 Key 10 Things I Wish I'd Known In The Past
How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to have a spare key on hand regardless of whether you lost the keyfob you were using or it has stopped working. This article will show you how to add, change or reprogramme your Mazda 3 keyfobs.

Certain keys require programming by an experienced locksmith, whereas others don't. Make sure you only make use of official Mazda replacements for your key fob.

How to add a spare key

You can also add an additional key in case you don't have a spare key available or if you accidentally break the one you already have. To accomplish this, you'll require a small screwdriver with a flat head and an updated CR2025 battery. Once you have the items and tools, you're ready to open the key fob. First find the auxiliary key release button. It's located on the bottom of the metal part. It's easy to find. Once you press the button, the cover will fall off instantly. Then, you can insert the screwdriver's tip into the notch on top or into the space and pull the metal piece 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 before turning it to OFF. This will add the new key's details to the system and allow it to start your vehicle in the future.

It is only possible to program three keys in your Mazda 3. The last thing you want is to have more than two working key fobs and not be in a position to get your car started. This is a safety precaution designed to prevent unauthorised users, such as valet drivers who are not authorized to use your key and starting your car.

How to reprogram a spare key?

If you have a spare key it's a good idea to be aware of how to reprogram it in case the original key you had is stolen or lost. This will keep unauthorized people from getting into your car and causing damage to it. This will work with any Mazda. You'll need two keys that are working to start the reprogramming process. If you don't have two working keys, you'll need to bring your vehicle to the dealership to get it done.

Begin by stepping into the driver's seat and close all the doors with the exception of the one that is open. Turn the ignition on and insert the first working key. mazda 3 car key replacement G28 before removing the key. Repeat with the second key.

Once you've programmed your new key, you'll have three working keys that you can use to start your vehicle in the future. Before placing each key in storage, make sure it's working properly.

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

How to Change the Battery on a spare Key

There's nothing more frustrating than finding that the battery in your key fob has died and you can't unlock your vehicle. 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 located on the back of the key fob. This will remove the metal key auxiliary and reveal two slots on the sides of the case. The flathead should be inserted into one of these slots, and then gently pry the two halves apart. Once the battery has been fully exposed, take it out of the case and put it in a spot where you'll never forget about it.

Be sure to have an extra battery in place before you start. These batteries can be purchased at any store that sells batteries or from a Mazda dealer in Winter Garden. The correct battery is vital to make sure that your keyfob functions correctly.

Replace the cap on the battery, and then install the new battery. Be careful not damage the rubber ring that holds the battery. Press the two halves together until you hear a click.

How do you reset the Keyless Entry System

The key fob on your Mazda 3 is not only an added convenience, but 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 key fob. The key fob must be reset by the dealer to enable it to function again. This can be an expensive and frustrating experience and it's a good idea to know how to reset the system yourself.

To reset the system, remove the battery for about 15 minutes. This will take out any remaining electrical power in the on-board computer. Then, disconnect both the connectors for the LF-ECU and the demand switch connectors. Check continuity between the following terminals.

Insert the key into the slot, then turn on the ignition. Keep the key in place for around five seconds and then turn off. The key information will now be added to your vehicle's computer and the new fob will be able to start your vehicle in the future. You can program up to three fobs but you should only use one at one time. This stops unauthorized individuals from copying your key and gaining access to your vehicle. You can purchase a brand new key fob online, but you'll still have to visit a dealer or locksmith to have it cut and programmed.