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How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the floor or it stopped working, it's recommended to keep a spare key on hand. This article will provide everything you must be aware of when adding, changing, and reprogramming your Mazda 3 key fobs.
Note: Some keys require programming from an expert locksmith, while others don't. Make sure you use only genuine Mazda replacements to replace your key fob.
How to add a spare key
You can also add another key in the event that you don't have a spare key, or when you accidentally damage the one you have. You'll need to use the flathead screwdriver, as well as an CR2025 battery. Once you have the items then it's time to open the key fob. First find the auxiliary key release button. It's located underneath the metal piece and is easy to locate. The back cover should come off when you press the button. Then, put the screwdriver's tip into the notch at the top or in the space, and remove the metal part.
Insert your new or spare key into the slot after you have removed the auxiliary key. Set the ignition to ON, and wait about five seconds before setting it to off. This will allow the system to recognize the new key and start your vehicle in the future.
It's important to note that you can only program up to three keys for your Mazda 3. The one thing you don't want is to have more than two functioning key fobs, and not be in a position to get your car started. This is a security measure designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and thereby starting your car.
How to Reprogram a Spare Key
It's a smart idea to know how to reprogram an extra key in the event that the original key is lost or stolen. This will stop unauthorised people from getting into your car and causing damage to it. This should work with any Mazda. You'll need two keys that work to start the reprogramming process. If you don't have two keys that work, it's best to take your Mazda to the dealer to have this done.
Begin by getting in your driver's seat and close the door, except for the one that's already opened. Place the first working key into the slot, and then turn the ignition to ON. Wait five seconds before removing the key. Repeat with the second key.
After you've programmed your new key, you'll have 3 keys that will allow you to start your vehicle in the future. Test each key to be sure that they're functioning properly before placing them away.
It's a good idea to purchase an extra Mazda 3 key fob, particularly if you're a driver who frequently loses their key or has other issues with it. You can find one online or at your local automobile retailer, but make sure to read reviews before purchasing so that you aren't purchasing a key fob that's not compatible with your vehicle.
How to change the Battery on a Spare Key
There's nothing more frustrating than discovering that the battery in your key fob has been damaged and you're unable to unlock your car. It's not a problem to replace the battery and save yourself some cash at the dealership.
Press the auxiliary button on the back of the keyfob. This will detach the metal key and reveal the slots on both sides of the case. Put the flathead screwdriver in one of these slots and then gently remove the two halves of the case. Once the battery is fully exposed, take it out and place it in a safe place somewhere that you won't forget about it.
Before you begin, make sure you have a new replacement battery. They are available at any store that stocks batteries or at a Mazda dealer close to Winter Garden. The right type of battery is vital to ensure that your keyfob is working correctly.
Then, place the new battery in the correct place and replace the cap of the battery. Be careful not to scratch the small rubber ring the battery sits on. Finally press the two halves of the key fob until you hear the sound of a click.
How to reset a Keyless Entry System
The Mazda 3 key fob is not just a piece of equipment for convenience. It also serves as a security feature. If you lose your key or had it stolen, the car will not start even if you have the spare key fob. This is because the fob that you have to be reprogrammed by the dealership in order to function properly. It's a difficult and costly ordeal. Therefore, it's best to learn how you can reset the system.
Disconnect the battery from the system for 15 minutes. This will erase any residual electrical current from the computer on board. Then, disconnect the LF ECU and demand switch connectors. Check for continuity between the 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 switch it off. The key's details will be transferred to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program as many fobs you desire however only one must be used at any given time. mazda key fob replacement will prevent unauthorized people from stealing your key and gaining access to your vehicle. You can purchase a replacement keyfob from the internet, however it'll still need to be programmed and cut by an authorized dealer.
