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 best to have a spare key on hand. This article will tell you how to add, change and re-programme your Mazda 3 keyfobs.

A word of warning Certain keys need to be programmed by a professional locksmith or dealer, while others don't. Make sure to use genuine mazda 3 replacement key fob 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 available or when you accidentally damage the one you already have. You'll need to use a flathead screwdriver and a new CR2025 battery. Once you've got these items then it's time to remove the key fob to change the battery. First find the auxiliary key release button. It's on the underside of the metal portion and is easy to find. The cover on the back should fall off when you press the button. Then, place the screwdriver's tip into the notch at the top or the space and remove the metal part.

Once the auxiliary key is removed, insert the new or spare key into the slot. Set the ignition to ON and wait about five seconds before setting it to OFF. This will add the new key's information to the system that will allow it to start your car 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 but not be in a position to get your vehicle started. This is a safety measure designed to prevent unauthorized users, like valet drivers, from activating your key 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 reprogram it in case the original key you had is stolen or lost. This will keep unauthorized people from stealing your car and starting it. This method should work on any Mazda 2 Replacement key however, you'll require two keys mazda working to begin the reprogramming process. If you don't own two keys that work it's recommended to take your mazda 6 replacement key fob to a dealer to have this completed.

Begin by putting yourself in the driver's seat, and close the door, except for the one that's already opened. Place the working key in the slot, and then set the ignition to the ON position. Wait five seconds before removing the key. Repeat the process with the second key.

Once you've completed programming your new key, you'll have three keys that allow you to start your car in the future. Test each key to ensure sure that they're working properly before throwing them away.

It's a good idea buy an extra Mazda 3 key fob, especially if you're someone who has a tendency to lose their keys or has other issues with it. It's possible to find one on the internet or at your local automobile store, but be sure to read the reviews before purchasing so that you aren't purchasing a key fob that's not compatible with your car.

How do you change the battery with a spare key?

There's nothing worse than finding that the battery for your key fob has been damaged and you're unable to unlock your car. It's easy to change the battery yourself and save money at the dealership.

Press the auxiliary key button on the back of the keyfob. This will release the key's metal cover and reveal an opening on each side of the case. Press the flathead into one of these slots, and then gently pull the two halves of the case apart. Once the battery is fully exposed, remove it and place it in a safe place somewhere that you won't forget about it.

Make sure you have a replacement battery prior to beginning. These batteries can be purchased from any store that sells batteries or from a mazda key replacement cost uk dealer in Winter Garden. Using the correct type of battery will ensure that your key fob functions effectively.

Next, put the new battery in the correct place and replace the cap on 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 an audible click.

How do I reset the Keyless Entry System

The key fob that you have in your Mazda 3 is not only an added convenience, but it's also an important security feature. The car won't start if your key is stolen or lost even if you have an extra key fob. This is because the key fob has to be reprogrammed by the dealership to work again. This can be a costly and time-consuming process therefore it's a great idea to learn how to reset the system yourself.

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

To program a new key or a spare, place it in the slot and turn the ignition to ON. The key should remain in the ignition for around five seconds, and then turn off. The key's details are now stored in the car's computer and the new fob can start your car. You can program up to three fobs however, you should only use one at one time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a new key fob online, but you'll still have to visit a dealer or locksmith to cut it and get it programmed.