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How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the ground or it just stopped working, it's a good idea to have an extra key available. This article will tell you how to add, alter or reprogramme the Mazda 3 keyfobs.
A word of caution Certain keys require programming by a locksmith professional or dealer, whereas others don't. Make sure you only use official Mazda replacements for your key fob.
How to Add mazda 2 spare key
If you're not lucky enough to receive a spare key from the dealer when you purchase your Mazda 3 or accidentally break the one you have, don't worry -- there is still a way to add another key. To accomplish this, you'll need a small flathead screwdriver and an updated CR2025 battery. Once you've got all the equipment and tools, you're ready to open the key fob. First look for the button that allows you to release the key. The button is located on the underside the metal part. It's easy to find. Once you hit the button, the back cover should be removed immediately. Then, insert the head of the screwdriver into the notch or spacing on the top of the metal piece and pull it away.
After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition to ON, and wait for 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 on your Mazda 3. The last thing you want is to have more than two working key fobs and not be capable of getting your vehicle started. This is a security precaution designed to prevent unauthorised users, such as valet drivers from activating your key and starting your vehicle.
How to reprogram a spare key?
It's a good idea to be aware of how to reprogram a spare key in the event that the original key is lost or stolen. This will stop unauthorized persons from starting your car, or stealing it. This procedure should work with any Mazda however, you'll require two working keys to begin the reprogramming process. If you don't have two keys that function, you should take your Mazda to the dealer to get this completed.
Begin by getting in your driver's seat and closing the door, except for the one that's already opened. Insert the first working key into the slot, and then set the ignition to the ON position. For five seconds, take the key out and repeat the procedure with the second key.
Once you've completed programming your new key, you should have three keys that will be able to start your car in the near future. Test each key to make sure that they're operating correctly before taking them off.
You should consider buying a spare Mazda 3 remote, especially in the event that your vehicle is prone to issues. You can find one online or at a local automotive store, but be sure to read reviews before buying so you aren't buying a key fob that's not compatible with your car.
How do I change the battery on a spare key
There's nothing more frustrating than finding that your key fob battery has been damaged and you're unable to unlock your vehicle. Luckily, it's easy to replace the battery and save some cash at the dealership.
The first step is to press the auxiliary key button on the back of the key fob. This will remove the key from the metal and reveal a slot on each side of the case. Press the flathead screwdriver into one of these slots and gently pry apart the two sides of the case. When the battery is fully exposed, take it out of the case and put it somewhere you will not forget about it.
Be sure to bring a replacement battery prior to starting. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. The correct type of battery is essential to ensure that your keyfob is working correctly.
Next, put the replacement battery into place and replace the cap of the battery. Be careful not to scratch the small rubber ring the battery sits on. Press the two halves together until you hear a click.
How to Reset a Keyless Entry System
The key fob on 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 key fob. This is because the key fob has to be reset at the dealership in order to work again. It's a difficult and costly experience. Therefore, it's recommended to understand how you can reset the system.
Disconnect the battery from the system for 15 minutes. This will remove any remaining power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Check for continuity between the following terminals:
To program an entirely new key or spare, place it in the slot and set the ignition to ON. The key should remain in the ignition for around five seconds, and then turn it off. The key's details are now transferred to the computer of your vehicle and the new fob will start your car. You can program as many fobs you need, but only one should be utilized at any specific time. This will prevent unauthorised people from stealing your key and gaining access to your vehicle. You can buy a new key fob online, but you'll need to visit an expert locksmith or dealer to cut it and programmed.
