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

It's a good idea to have an extra key in your pocket in case you lose your keyfob, or it stopped working. This article will explain how to add, change or reprogramme your Mazda 3 keyfobs.

A word of caution Some keys require programming by a locksmith professional or dealer, while others don't. Only use genuine mazda 6 keys replacements to replace your key fob.

How do you add an additional key

You can add a second key if you don't have a spare key or in the event that you break the one you already have. You'll need to use the flathead screwdriver, as well as a new CR2025 battery. Once you've got these items you need, it's time to open the key fob. First find the auxiliary key release button. It's on the underside of the metal component and is easy to locate. Once you press the button, the back cover should fall off right away. Next, place the screwdriver's head into the notch or spacing at the top of the metal part and pry it off.

After the auxiliary keys are removed, insert your new or spare key into the slot. Turn the ignition on and wait for approximately five seconds, and then turn it to OFF. This will register 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 on your Mazda 3. The last thing you want is to have more than two working key fobs, and not be able to get your car started. This is a safety measure designed to stop unauthorized users, like valet drivers, from activating your key and thereby starting your car.

How do I reprogram an unrepaired key?

If you have a spare key it's a good idea to be aware of how to reprogram it in the event that the original key you had is stolen or lost. This will keep unauthorised persons from opening your car or stealing it. This process should work on any mazda 3 car keys, though you'll need two keys that work to begin the reprogramming. If you don't have two keys that work, you should take your car to a dealer to get this completed.

Begin by stepping into your driver's seat, and close the door, with the exception for the one that's open. Set the ignition to ON and insert the initial working key. Wait five seconds, then take the key out and repeat the process with a second key.

After programming your new key, you'll have three keys that will start your car in the future. Before you store each key, make sure that it's working correctly.

You should think about purchasing an extra Mazda verisa key replacement 3 remote, especially when your car is susceptible to issues. It's possible to find one on the internet or at a local automotive retailer, but make sure to read the reviews prior to purchasing so you aren't purchasing one that's not compatible with your car.

How to Change the Battery on a spare key

There's nothing more frustrating than finding that the battery for your key fob has died and you can't unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.

Press the auxiliary key button located at the back of the keyfob. This will remove the key's metal cover and reveal an opening on each side of the case. Press the flathead screwdriver into one of these slots. Then, gently remove the two parts of the case. When the battery is completely exposed, take it out and set aside the case in a place where you will not forget it.

Be sure to bring a new battery ready prior to beginning. They can be bought at any store selling batteries or from a mazda cx-5 key fob replacement cost dealer in Winter Garden. Choosing the right battery will ensure that your key fob works correctly.

Replace the cap on the battery and then replace the battery. Be careful not damage the rubber ring that holds the battery. The two halves should be pressed together until you can hear the click.

How to Reset a Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also a security measure. If you lose your key or had it stolen the car will not start even if you have the spare fob. The key fob has to be reprogrammed by a dealer to allow it to work again. This can be a painful and expensive ordeal. Therefore, it's recommended to understand how you can reset the system.

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

Place the key in the slot, and turn the ignition ON. The ignition should be turned off after approximately five seconds. The key information will now be added to your vehicle's computer, and the new fob will be able to start your car in the future. You can program any number of fobs you need however only one must be in use at any certain time. This will prevent unauthorized persons from copying your key and gaining access to your car. You can purchase a replacement key fob online, however you'll still have to visit an authorized locksmith or dealer to cut it and programmed.