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

It's a good idea always to keep an extra key on hand no matter if you've dropped the keyfob you were using or it has stopped working. This article will explain everything you need to be aware of when the process of adding, changing, and changing your Mazda 3 key fobs.

A word of warning Certain keys require programming by a professional locksmith or dealer, while other keys don't. Only use official mazda 2 key replacements to replace your key fob.

How to Add a Spare Key

If you're not lucky enough to receive a spare keys from the dealership when you purchase your Mazda 3 or accidentally break your current one Don't fret, there's an option to make another key. To accomplish this, you'll need an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you have these items and are ready to access the key fob and change the battery. Find the auxiliary key release. It's on the underside of the metal component and is easy to find. The cover that covers the back should come off as soon as you press the button. Then, place the screwdriver's head into the notch on top or the space and take the metal part away.

After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition ON and wait for five seconds, and then turn it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.

It's important to note that you can only program up to three keys on your mazda replacement keys 3. The one thing you don't want is to have more than two functioning key fobs and not being in a position to get your vehicle started. This is a safeguard to stop anyone who is not authorized from activating your keys and then starting your car.

How do you reprogram an unrepaired key?

It's smart to learn how you can reprogram a spare key in the event that your original key gets lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This process should work on any Mazda but you'll need two keys working to begin the reprogramming. If you don't have two working keys it's recommended to take your vehicle to a dealer to have this completed.

Begin by getting into your driver's seat, and close the door, except for the one that's already opened. Turn the ignition on and insert the initial working key. Wait five seconds before removing the key. Repeat the process with the second key.

After you finish programming your new key, you should have three keys that will work to start your vehicle in the future. Test each key to ensure sure that they're operating correctly before taking them off.

It's a good idea purchase an extra Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can find one online or at a local automotive store, but be sure to read the reviews before buying so you can avoid getting a key fob that's not compatible with your car.

How to change the battery using a spare key

It's awful to discover that your key fob has died and you're unable to unlock your car. It's not a problem to replace the battery and save some money at the dealership.

Press the auxiliary key button on the back of the keyfob. This will take out the metal key that is used as an auxiliary key, and expose an opening on both sides of the case. Press the flathead screwdriver into one of these slots and gently break the two halves of the case. Once the battery has been fully exposed, take it out of the case and place it somewhere you will not forget about it.

Be sure to have an extra battery in place prior to starting. You can find these at any store that stocks batteries or at an Mazda dealer close to Winter Garden. The right kind of battery is essential to ensure that your keyfob is working correctly.

Replace the cap on the battery, and then put in the new battery. Be careful not to damage the small rubber ring that the battery sits on. Finally press the two parts of the key fob until you hear the sound of a click.

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also an element of security. If you lose your key or have it stolen the car won't start even if you've got the spare key fob. The key fob needs to be reprogrammed by a dealer to enable it to function again. It can be a costly and frustrating ordeal It's a good idea to know how to reset the system yourself.

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

To program a new key or a spare, insert it into the slot and turn the ignition to ON. The ignition should be turned off after about five seconds. The key information is now transferred to the computer of your vehicle and the new fob can start your car. You can program any number of fobs you desire however only one must be utilized at any given time. This will stop unauthorized individuals from stealing your key and getting access to your car. You can buy a new key fob online, but you'll still have to visit a dealer or locksmith to cut it and programmed.