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How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the floor or it just stopped working, it's a good idea to have a spare key handy. This article will provide everything you need to be aware of when changing, adding, and changing the programming of your Mazda 3 key fobs.
A word of warning Certain keys require programming by a locksmith professional or dealer, while other keys do not. Only use official Mazda replacements to replace your key fob.
How to add a spare key
You can add a second key if you don't have a spare key or if you accidentally damage the one you have. You'll need to use a flathead screwdriver and an CR2025 battery. Once you've got the tools then it's time to open up the key fob and change the battery. First find the key release button for the auxiliary key. It's located on the underside of the metal part. It's easy to find. The back cover should come off as soon as you press the button. Next, place the screwdriver's head into the notch or space at the top of the metal piece and then pull it off.
Insert your new or spare key into the slot following the removal of the accessory key. Set the ignition to ON and wait about five seconds before setting it to off. This will add the new information on the key to the system that will allow it to start your vehicle in the future.
It is important to remember that you can only program up to three keys on your Mazda 3. The most important thing is to have more than two functioning key fobs and not being capable of getting your vehicle started. This is a security measure to stop anyone who is not authorized from activating your key fobs and starting your vehicle.
How to Reprogram a Spare Key
It's a good idea to be aware of how to reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorized persons from abusing your vehicle and re-starting it. This will work with any Mazda. You will need two keys that work for the reprogramming to begin. If you don't have two working keys it's recommended to take your Mazda to the dealer to have this done.
Begin by putting yourself in the driver's seat, and closing the door, except for the one that's been opened. Insert the first working key in the slot, then set the ignition to ON. Take five seconds before removing the key. Repeat the process with the second key.
After programming your new key, you should have 3 keys that will work to start your car in the near future. Test each key to make sure that they're working properly before placing them away.
It's a good idea to buy an extra Mazda 3 key fob, especially if you're someone who often loses your key or has other issues with it. You can purchase one on the internet or at your local auto store. Make sure to read reviews before purchasing to ensure that you don't purchase one that's not compatible with your vehicle.
How do I change the battery with a spare key?
There's nothing more frustrating than discovering that the battery in your key fob has died and you can't unlock your car. It's easy to change 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 key from the metal and reveal an opening on each side of the case. Press the flathead into one of these slots, and then gently push the two halves apart. Once the battery is fully exposed, take it out and set aside the case somewhere safe from being lost.
Be sure to have a new battery ready before you begin. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the right type of battery will ensure that your key fob works effectively.
Replace the battery cap and then install the new battery. Be careful not to scratch the small rubber ring that the battery sits on. Then, press the two halves of the key fob until you hear an audible click.
How do I reset the Keyless Entry System
The key fob on your Mazda 3 is not only an added convenience, but it's also an important security feature. The car will not start if your key is stolen or lost, even if you've got an extra key fob. This is because the key fob has to be reprogrammed by the dealership to function properly. It can be a stressful and expensive ordeal. Therefore, it's best to understand how you can reset the system.
To reset the system, unplug the battery for around 15 minutes. This will take out any remaining electrical current from the computer on board. Then, disconnect both connectors for the LF-ECU and the demand switch connectors. Then, check continuity between the following terminals:
To program the new key or spare, place it in the slot and turn the ignition to ON. Keep the key in place for around five seconds, and then switch it off. The key information is now stored in the car's computer and the new fob is able to start your car. You can program up to three fobs however, you should only use one at a time. This stops unauthorized individuals from copying the key and getting ahold of your car. linked webpage can purchase a brand new key fob on the internet, but you'll still need to go to an authorized locksmith or dealer to get it cut and programmed.