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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 has stopped working, it's always a good idea to have a spare key handy. This article will provide everything you must learn about changing, adding, and programming your Mazda 3 key fobs.
A word of caution: some keys require programming by a locksmith professional or dealer, whereas other keys don't. Only use authentic Mazda replacements to replace your key fob.
How to Add a Spare Key
You can add an additional key in case you don't have a spare key or if you accidentally damage the one you have. To accomplish this, you'll require an inexpensive flathead screwdriver as well as the new CR2025 batteries. Once you have these items, it's time to access the key fob and swap the battery. Locate the key release auxiliary. It's on the underside of the metal component and is easy to locate. The cover that covers the back should come off as soon as you press the button. Then, place the screwdriver head into the notch on top or the space, and remove the metal part.
Insert your spare key or a new one into the slot after you have removed the auxiliary key. Set the ignition to ON, and wait for about five seconds before turning it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.
It is only possible to program three keys into your Mazda 3. You don't want to have to use more than two key fobs in order to start your vehicle. This is a security precaution designed to stop unauthorized users, like valet drivers who are not authorized to use your key and thereby starting your car.
How to Reprogram a Spare Key
If you have a spare key, it's a good idea be aware of how to reprogram it in case your original key is lost or stolen. This will stop unauthorized persons from opening your car or taking it. This should work with any Mazda. You'll need two keys that are functioning for the reprogramming to begin. If you don't have two working keys, you'll have to bring your vehicle to the dealer to get it done.
Start by stepping into the driver's position, and closing all the doors except the one that is open. Place the working key into the slot, then set the ignition to the ON position. Then wait five seconds before taking out the key. Repeat with the second key.
Once you've programmed your new key, you'll have three working keys you can use to start your vehicle in the future. Test mazda rx8 key fob to make sure they're working correctly before putting them away.
It's a good idea purchase an extra Mazda 3 key fob, especially if you're a driver who is prone to losing keys or has other issues with it. You can buy one online or at your local automobile store, but make sure to read the reviews before buying so that you aren't purchasing a key fob that's not compatible with your car.
How do you change the battery on a spare key
There's nothing more frustrating than discovering that your key fob battery has gone out and you're not able to unlock your car. Luckily, it's easy to replace the battery and save yourself some money at the dealership.
The first step is to press the auxiliary key button that is located on the back of the key fob. This will detach the key made of metal and reveal a slot on each side of the case. Press the flathead screwdriver into one of these slots. Then, gently remove the two sides of the case. When the battery is completely exposed, take it out and place the case somewhere safe from being lost.
Make sure you have an additional battery prior to starting. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob is working effectively.
Then, place the new battery into place and replace the battery cap. Be careful not to scratch the rubber ring on which the battery rests. The two halves should be pressed together until you can hear the click.
How do I reset the Keyless Entry System
The key fob that you have in your Mazda 3 is not only an option for convenience, it's an important security feature. If you lose your key or have it stolen the car will not start, even if you have the spare fob. The key fob must be reset by the dealer to enable it to function again. It can be a frustrating and costly process. So, it's best to learn how you can reset the system.
To reset the system, remove the battery for around 15 minutes. This will remove any residual electricity from the onboard computer. Then, disconnect the LF-ECU connector as well as the demand switch connectors. Verify the continuity between the next terminals.
Put the key in the slot, then turn the ignition ON. Turn off the ignition after approximately five seconds. The key's information is added to the vehicle's computer and the new fob can start your car. You can program any number of fobs you need, but only one should be used at a certain time. This will prevent unauthorized persons from copying the key and gaining access to your vehicle. You can buy a new keyfob on the internet, but it must be programmed and cut by a dealer.