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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to keep an extra key on hand regardless of whether you lost the keyfob you were using or it has stopped working. This article will go over everything you must be aware of adding, changing, and programming your Mazda 3 key fobs.
Warning: Some keys require programming by a professional locksmith, while others do not. Be sure to only use official Mazda replacements for 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 do this, you'll need an incredibly small screwdriver, a flathead screwdriver, and an CR2025 battery that's new. Once you have these items and are ready to access the key fob and swap the battery. Locate the key release auxiliary. The button is beneath the metal part. It's easy to find. The back cover should come off as soon as you press the button. Then, place the screwdriver's head into the notch on top or into the space and pull the metal piece off.
Insert your spare or new key into the slot after taking out the secondary key. Turn the ignition on and wait for about five seconds, then turn it to off. This will register the new key's information to the system and allow it to start your vehicle in the future.
It is only possible to program three keys in your Mazda 3. The final thing you want is to have more than two functioning key fobs and not being in a position to get your vehicle started. This is a security measure designed to prevent unauthorised users, such as valet drivers from activating your key and starting your car.
How to reprogram a spare key?
If you have a spare key, it's a good idea know how to program it if your original key is stolen or lost. This will prevent unauthorised persons from stealing your car and starting it. This method should work on any Mazda, though you'll need two working keys to begin the reprogramming process. If you don't have two working keys, you'll need to take your vehicle to the dealership to complete the process.
Start by stepping into driver's position and close all the doors, except the one that is open. Turn the ignition on and insert the first working key. Wait five seconds, then take the key out and repeat the process with a second key.
After you've programmed your new key, you'll have three keys that you can use to start your car in the future. Test each key to make sure that they're operating correctly before throwing them away.
It is advisable to purchase a spare Mazda 3 remote, especially in cases where your car is prone to issues. You can find one online or at your local automotive retailer, but make sure to read reviews prior to purchasing so you can avoid purchasing an item that isn't compatible with your vehicle.
How to change the Battery on a spare Key
There's nothing worse than finding that the battery on your key fob been damaged and you're unable to unlock your car. It's easy to change the battery yourself and save money at the dealership.
Press the auxiliary key button located at the back of the keyfob. This will take out the key's metal cover and reveal a slot on each side of the case. Insert the flathead screwdriver into one of these slots. Then, gently remove the two halves of the case. Once the battery has been fully exposed, take it out of the case and place it in a spot where you'll never forget it.
Before you start, make sure you have a new replacement battery. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. Using the correct type of battery will ensure that your key fob functions perfectly.
Next, put the new battery in the correct place and replace the cap of the battery. Be careful not to damage the rubber ring on which the battery rests. Then, press the two halves of the key fob together until you hear the sound of a click.
How do I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It also serves as an important 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 to work properly. This could be a costly and time-consuming process therefore it's a great idea to understand how to reset the system yourself.
To reset the system, unplug the battery for 15 minutes. This will remove any remaining electric current from the onboard computer. Next, disconnect both the LF-ECU connector as well as the demand switch connectors. After mazda key fob replacement , test for continuity between the following terminals:
Place the key into the slot, and turn on the ignition. Keep the key in place for about five seconds and then switch it off. The key's information has been transferred to the computer of your vehicle and the new fob can start your vehicle. You can program up to three fobs however, you must only use one at a time. This prevents unauthorized people from copying your key and gaining access to your car. You can buy a new key fob online, however you'll need to visit an expert locksmith or dealer to get it cut and programmed.