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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 no matter if you've dropped your keyfob, or it has stopped working. This article will explain how to add, modify or reprogramme your Mazda 3 keyfobs.
mazda new key fob of caution: some keys require programming by a professional locksmith or dealer, whereas other keys do not. Be sure to only use genuine Mazda replacements for your key fob.
How to add a spare key
You can also add another key in the event that you don't have a spare key available or if you accidentally damage your existing one. To do this, you'll need an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you've got these tools and are ready to open the key fob and change the battery. First, locate the key release button for the auxiliary key. The button is beneath the metal portion. It's easy to find. When you press the button, the back cover should slide off immediately. Then, insert the head of the screwdriver into the notch or the space on the top of the metal part and then pull it off.
Insert your new or spare key into the slot after you have removed the additional key. Set the ignition to ON and wait about five seconds before setting it to off. This will allow the system to recognize the new key and start your vehicle in the future.
You can only program three keys into your Mazda 3. You don't want to use more than two keys to start your vehicle. This is a safety measure designed to prevent unauthorized users, like valet drivers from activating your key and thereby launching your vehicle.
How do I reprogram an unrepaired key
It's smart to know how to reprogram a spare key in the event that the original key is lost or stolen. This will prevent unauthorised persons from abusing your vehicle and re-starting it. This process is compatible with any Mazda but you'll need two keys that work to begin the process of reprogramming. If you don't own two working keys, you should take your vehicle to a dealer to get this done.
Start by stepping into the driver's seat and shutting all doors, with the exception of the one that is open. Put the first working key into the slot, and then turn the ignition to ON. Then wait five seconds before taking out the key. Repeat the process with the second key.
Once you've programmed your new key, you'll have three working keys that you can use to start your car in the future. Before storing each key, make sure it's functioning correctly.
It's a good idea purchase an extra Mazda 3 key fob, particularly if you're a driver who frequently loses their key or has other issues with it. You can find one online or at a local automotive store, but make sure to read reviews before buying so you aren't buying the wrong key fob compatible with your car.
How do I change the battery on a spare key
There's nothing worse than finding that the battery in your key fob has gone out and you're not able to unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.
Press the auxiliary key button on the back of the keyfob. This will release the metal auxiliary key and expose an opening on both sides of the case. Insert the flathead screwdriver into one of these slots. Then, gently pry apart the two sides of the case. When the battery is completely exposed, remove it and place the case somewhere that you won't forget about it.
Make sure you have an additional battery before you start. They can be found at any store that stocks batteries or at a Mazda dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob works correctly.
Then, place the new battery into place and replace the cap of the battery. Be careful not to damage the small rubber ring that the battery is placed on. The two halves should be pressed together until you hear a click.
How can I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It's also an element of security. 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 can be a frustrating and expensive ordeal. So, it's best to learn how to reset the system.
Disconnect the battery from the system for 15 minutes. This will remove any remaining electric current from the onboard computer. Then, disconnect the LF-ECU and demand switch connectors. After that, test for continuity between the following terminals:
Place the key into the slot, then turn on the ignition. Switch off the ignition after approximately 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 need but only one can be used at any certain time. This will prevent unauthorized persons from copying your key and gaining access to your vehicle. You can purchase a brand new key fob online, but you'll still need to go to an expert locksmith or dealer to have it cut and programmed.