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

It's a good idea to keep an extra key at hand regardless of whether you lost the keyfob you were using or it was unable to function. This article will cover everything you need to be aware of when the process of adding, changing, and changing the programming of your Mazda 3 key fobs.

Note: Some keys require programming by an expert locksmith, while others don't. Use only official mazda key fob programming replacements to replace your key fob.

How to add an additional key

You can add an additional key if you don't have a spare key, or when you accidentally damage the one you have. You'll need an flat-head screwdriver and the CR2025 replacement battery. Once you've got these items then it's time to access the key fob and swap the battery. Locate the auxiliary key release. It's located on the underside of the metal part and is easy to find. The back cover should come off when you press the button. Then, put the screwdriver's head in the notch at the top or in the space, and pull the metal piece off.

After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition ON and wait for approximately five seconds before turning it to off. This will register the new mazda key key's information to the system and allow it to start your car in the future.

It's important to note that you can only program up to three keys on your mazda keys replacement 3. The last thing you want is to have more than two functioning key fobs and not being in a position to get your car started. This is a safety measure to stop unauthorised users from activating your keys and launching your vehicle.

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 your original key gets lost or stolen. This will prevent unauthorized people from starting your vehicle or taking it. This method should work on any mazda replacement keys but you'll need two keys working to begin the process of reprogramming. If you don't have the two working keys, you'll need take your vehicle to a dealership to complete the process.

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 then insert the first working key. Wait five seconds, then remove the key and repeat with the second key.

After you finish programming your new key, you should have three keys that will work to start your car in the near future. Test each key to be sure that they're functioning properly before throwing them away.

You should think about purchasing a spare Mazda 3 remote, especially in the event that your vehicle is prone to issues. You can purchase one on the internet or at a local automotive store. Make sure to go through reviews prior to purchasing to ensure you don't buy an item that isn't compatible with your vehicle.

How to change the battery on a spare key?

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

Press the auxiliary button on the back of the keyfob. This will remove the auxiliary key and expose slots on both 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 is fully exposed, remove the case and place it somewhere that you will not forget it.

Be sure to bring a replacement battery prior to beginning. These batteries can be purchased at any store selling batteries or from a mazda car keys replacements (Suggested Browsing) dealer in Winter Garden. Using the right type of battery will ensure that your key fob works properly.

Replace the cap of the battery and then replace the battery. Be careful not to damage the rubber ring on which the battery rests. Finally, press the two halves of the key fob until you hear the sound of a click.

How to Reset the Keyless Entry System

The key fob inside your mazda transponder key programming 3 is not only an extra convenience, but also an important security feature. The car won't start if the key is lost or stolen, even if you've got a spare fob. This is because the key fob has to be reprogrammed by the dealership in order to work properly. This can be a costly and frustrating ordeal, so it's a good idea to understand how to reset the system yourself.

To reset the system, unplug the battery for around 15 minutes. This will take out any remaining electricity from the onboard computer. Then, disconnect both the LF-ECU and demand switch connectors. Check continuity between the following terminals.

Insert the key into the slot and switch the ignition on. Keep the key in place for around five seconds, and then turn off. The key's details will be transferred to your vehicle's computer, and the new fob will be able start your vehicle in the future. You can program up to three fobs however, you must only use one at one time. This stops unauthorized individuals from copying your key and gaining access to your vehicle. You can purchase a replacement keyfob online, however it must be cut and programmed by an authorized dealer.