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

Whether you dropped your key fob on the ground or it has stopped working, it's always recommended to keep an extra key in your pocket. This article will explain everything you must learn about adding, changing, and reprogramming your Mazda 3 key fobs.

A word of caution: some keys require programming by a locksmith professional or dealer, while others do not. Make sure to use genuine Mazda replacements for your key fob.

How do I add a spare key?

You can also add an additional key if you don't have a spare key, or when you accidentally damage the one you have. You'll need to use a flathead screwdriver, and a new CR2025 battery. Once you've got these items you can open the key fob and replace the battery. Locate the key release auxiliary. It's located on the underside of the metal portion and is easy to find. Once you press the button, the back cover will fall off instantly. Then, insert the screwdriver's head into the notch or the space on the top of the metal part and then pull it off.

Insert the spare or new key into the slot after you have removed the accessory key. Set the ignition to ON and wait about five seconds before turning it to off. This will add the new key's information into the system which will allow it to start your car in the future.

You can only program three keys to your Mazda 3. You don't want to utilize more than two keys to start your vehicle. This is a safeguard to stop unauthorised users from activating your keys and starting your car.

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 stolen or lost. This will stop unauthorized persons from starting your car or taking it. This procedure should work with any Mazda however, you'll require two working keys to start the reprogramming. If you don't have the two working keys, you'll need take your vehicle to the dealership to get it done.

Start by getting into the driver's seat, closing all the doors except the one that is open. Set the ignition to ON and insert the first working key. Wait five seconds, then remove the key and repeat the process with the second working key.

Once you've completed 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 that it's functioning properly.

You should think about buying an extra mazda 3 key fob replacement 3 remote, especially in the event that your vehicle is prone to problems. You can purchase one online or at your local auto store. Be sure to review the reviews before buying so that you don't get a key fob which isn't compatible with your car.

How do I change the battery on a spare Key

There's nothing worse than finding that the battery in your key fob has gone out and you're not able to unlock your car. It's simple to replace the battery yourself and save money at the dealer.

The first step is to press the auxiliary button on the back of the key fob. This will remove the auxiliary key and expose an opening on both sides of the case. Press the flathead into one of these slots, and Mazda 3 Spare key gently pry the two halves apart. When the battery is completely exposed, take it out and place the case somewhere that you won't forget about it.

Be sure to have a replacement battery prior to beginning. They can be found at any retailer that sells batteries or at a Mazda dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob is working correctly.

Replace the cap of the battery and then put in the new battery. Be careful not to scratch 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 a Keyless Entry System

The key fob on your mazda 6 key fob 3 is not only an extra convenience, but also an important security feature. If you lose your key, or have it stolen the car will not start even if you have the spare key fob. This is because the key fob has to be reprogrammed at the dealership to work once more. It can be a costly and frustrating ordeal It's a good idea to understand how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will take out any remaining electricity in the on-board computer. Then, disconnect both LF-ECU and 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. The key should remain in the ignition for about five seconds, then turn off. The key's information has been added to the computer in your car and the new fob will start your car. You can program as many fobs as need however only one should be utilized at any given time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a replacement keyfob from the internet, however it will still need to be cut and programmed by a dealer.