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 an excellent idea to keep an extra key in your pocket. This article will show you how to add, change or reprogramme the Mazda 3 keyfobs.
A word of warning: some keys require programming by a professional locksmith or dealer, whereas other keys don't. Only use official Mazda replacements to replace your key fob.
How do I add an extra key
If you're unable to get a spare key from the dealer when you buy your Mazda 3 or accidentally break your current key do not fret -- there's still the option of adding another key. You'll need a flathead screwdriver, and the CR2025 replacement battery. Once you've got these items you need, it's time to open the key fob. First, locate the auxiliary key release button. It's located on the underside of the metal piece and is easy to find. When you press the button, the back cover should fall off right away. Next, place the screwdriver's head into the notch, or the spacing at the top of the metal component and pry it off.
After the auxiliary key has been removed, insert your new or spare key into the slot. Turn the ignition on and wait for approximately five seconds, then set 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 in your Mazda 3. The last thing you want is to have more than two working key fobs and not being capable of getting your vehicle started. This is a security measure designed to stop unauthorized users, like valet drivers, from activating your key and thereby starting your car.
How to reprogram a spare key
It's a smart idea know how you can reprogram an extra key in the event that your original key gets lost or stolen. This will keep unauthorised persons from starting your car, or stealing it. This procedure should work with any Mazda but you'll need two working keys to begin the reprogramming process. If you don't own two working keys, you'll have to bring your vehicle to the dealer to get it done.
Begin by getting into your driver's seat and shutting the door, excluding for the one that's already opened. Insert the first working key into the slot, and then turn the ignition to the ON position. Take five seconds before removing the key. Repeat with the second key.
Once you've completed programming your new key you should have three keys that will work to start your car in the near future. Before placing each key in storage, make sure it's working properly.
It's a good idea to buy a spare Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can purchase one on the internet or at a local automotive store. Make sure to go through reviews prior to purchasing so that you don't get a key fob which isn't compatible with your vehicle.
How to change the battery on a spare key
There's nothing more frustrating than discovering that the battery on your key fob died and you can't unlock your car. It's simple to replace the battery yourself and save money at the dealership.
Press the auxiliary key button on the back of the keyfob. This will detach the key's metal cover and reveal a slot on each side of the case. Press the flathead into one of these slots, and then gently pull the two halves of the case apart. When the battery is completely exposed, remove it and place it in a safe place somewhere that you won't forget about it.
Before you begin, make sure you have a brand new replacement battery. They are available in any store that sells batteries or at an Mazda dealer near Winter Garden. The correct type of battery is vital to ensure that your key fob functions correctly.
Replace the cap of the battery and then replace the battery. Be careful not to scratch the rubber ring on which the battery rests. Finally, press the two halves of the key fob until you hear an audible click.
How can I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It also serves as a security measure. If how much is a new mazda key fob lost your key or had it stolen the car won't start even if you have the spare key fob. The key fob needs to be reprogrammed by a dealer to enable it to function again. It's a difficult and expensive ordeal. So, it's best to learn how to reset the system.
To reset the system, unplug the battery for around 15 minutes. This will take out any remaining electrical power in the on-board computer. Then, disconnect the LF-ECU connector as well as the demand switch connectors. Check for continuity between the following terminals:
To program a new key, or a spare, insert it into the slot and set the ignition to ON. Turn off the ignition after about five minutes. The key's details are now transferred to the computer of your vehicle and the new fob is able to start your vehicle. You can program as many fobs as you would like however only one must be used at any certain time. This will keep unauthorised individuals from stealing your key and gaining access to your vehicle. You can purchase a replacement keyfob online, but it still needs to be cut and programmed by an authorized dealer.