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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 just stopped working, it's always a good idea to have an extra key in your pocket. This article will tell you how to add, modify and re-programme your mazda 3 keys 3 keyfobs.
A word of warning Certain keys need to be programmed by a professional locksmith or dealer, whereas others do not. Use only genuine Mazda replacements to replace your key fob.
How do I add a spare key?
You can add a second key if you don't have a spare key available or if you accidentally break your current one. To do this, you'll need a small flathead screwdriver and a new CR2025 battery. Once you've got these tools you can open the key fob and replace the battery. First, locate the key release button for the auxiliary key. It's located beneath the metal portion. It's easy to find. When you hit the button, the back cover should slide off immediately. Next, place the head of the screwdriver into the notch, or the spacing on the top of the metal piece and then pull it off.
Once the auxiliary key has been removed, insert your new or spare key into the slot. Set the ignition to ON and wait for about five seconds before setting it to off. This will allow the system to recognize the new key and begin your vehicle in the future.
It's important to know that you can only program up to three keys for your duplicate mazda key fob 3. The one thing you don't want is to have more than two working 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 from activating your key and starting your vehicle.
How to Reprogram a Spare Key
It's a smart idea to know how you can reprogram an extra key in the event that your original key gets lost or stolen. This will prevent unauthorized people from opening your car or taking it. This method should work on any mazda 3 key fob replacement but you'll need two keys that work to begin the process of reprogramming. If you don't have two functioning keys, you'll have to take your vehicle to the dealership to get it done.
Start by getting into the driver's position and shutting all doors, with the exception of the one that is open. Insert the first working key in the slot, and then set the ignition to ON. Wait five seconds before removing the key. Repeat the process with the second key.
After you've programmed your new key, you'll have three keys that will allow you to start your car in the near future. Before storing each key, make sure it's working properly.
It's a good idea to purchase a spare 2012 mazda 3 key fob 3 key fob, especially if you're someone who is prone to losing keys or has other issues with it. You can purchase one online or at a local automotive store. Make sure you review the reviews before buying to ensure that you don't purchase the wrong key fob that isn't compatible with your vehicle.
How do I change the battery on a spare key?
There's nothing worse than discovering that the battery on your key fob gone out and you're not able to unlock your car. Fortunately, it's easy to replace the battery and save yourself some money at the dealership.
Press the auxiliary button on the back of the keyfob. This will take out the key's metal cover and reveal an opening on each side of the case. The flathead should be inserted into one of these slots, and then gently pry the two halves apart. After the battery is fully exposed, remove the case and put it somewhere you will not forget it.
Make sure you have a new battery ready prior to starting. They can be found at any store that sells batteries or at an Mazda dealer close to Winter Garden. Choosing the correct battery will ensure that your key fob is working properly.
Replace the cap on the battery, and then insert the new battery. Be careful not to damage the small rubber ring the battery is placed on. Then press the two halves of the key fob together until you hear an audible click.
How to Reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It's also an element of security. If you lose your key or had it stolen, the car will not start even if you have the spare key fob. The key fob has to be reprogrammed by a dealer to allow it to work again. This can be an expensive and frustrating experience, so it's a good idea to learn how to reset the system yourself.
Disconnect the battery from the system for 15 minutes. This will take out any remaining electrical power in the on-board computer. Next, disconnect both the connectors for the LF-ECU and the demand switch connectors. Verify the continuity between the next terminals.
To program an entirely new key or spare, place it in the slot and set the ignition to ON. Leave the key in for around five seconds and then turn off. The information from the key will be saved to your car's computer, and the new fob will be able start your car in the future. You can program as many fobs as you desire however only one must be used at any given time. This will prevent unauthorised people from stealing your key and gaining access to your car. You can purchase a replacement key fob online, but you'll still need to visit an expert locksmith or dealer to cut it and programmed.