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How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea to have an extra key in your pocket regardless of whether you lost the keyfob or it was unable to function. This article will explain how to add, modify, and reprogramme your Mazda 3 keyfobs.

A word of warning: some keys require programming by a professional locksmith or dealer, while others don't. Be sure to only use genuine Mazda replacements for your key fob.

How do you add a spare key

If you're not lucky enough to receive a spare keys from the dealer when you purchase your Mazda 3 or accidentally break your current one but don't worry, there is still an option to get another key. You'll need to use a flathead screwdriver, and a new CR2025 battery. Once you've got the tools you need, it's time to open the key fob. First find the key release button for the auxiliary key. The button is located on the underside of the metal part. It's easy to locate. When you hit the button, the cover should slide off immediately. Then, put the screwdriver's head into the notch at the top or the space, and pull the metal piece off.

Insert the spare or new key into the slot after you have removed the secondary key. Turn the ignition on and wait for five seconds, then set it to OFF. This will register the new key's details to the system and allow it to start your car in the future.

It's important to note that you can only program up to three keys on your mazda key 3. You don't want to use more than two key fobs in order to start your car. This is a security measure to prevent unauthorized users from activating your keys and launching your vehicle.

How to Reprogram a Spare Key

If you have a spare key, it's a good idea know how to program it in the event your original key gets lost or stolen. This will stop unauthorized persons from starting your vehicle or taking it. This process should work on any Mazda but you'll need two working keys to start the process of reprogramming. If you don't have two working keys, you'll have to take your vehicle to a dealership to complete the process.

Begin by stepping into the driver's position and closing all the doors except the one that is open. Set the ignition to ON and insert the first functioning key. Wait for five seconds, then take the key out and repeat the process with the second key.

Once you've completed programming your new key you should have 3 keys that will start your car in the near future. Test each key to ensure sure that they're working properly before placing them away.

It's a good idea to buy an extra Mazda 3 key fob, especially if you're a driver who is prone to losing keys or has other issues with it. You can buy one online or at a local automotive retailer, but make sure to read reviews prior to purchasing so you aren't purchasing the wrong key fob compatible with your car.

How do I change the battery on a spare key

It's a nightmare to discover that your key fob has failed and you're locked out of your car. Luckily, it's easy to replace the battery and save yourself some money at the dealership.

The first step is to press the auxiliary key button that is located on the back of the key fob. This will release the metal key auxiliary to reveal a slot on both sides of the case. Put the flathead screwdriver in one of these slots and gently take apart the two halves of the case. After the battery is fully exposed, remove the case and put it somewhere you will not forget it.

Before you begin, make sure you have a brand 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 operates properly.

Then, place the new battery into place and replace mazda key the cap on the battery. Be careful not to scratch the rubber ring on which the battery rests. The two halves should be pressed together until you hear the click.

How to Reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenience. It's also an element of security. The car won't start if the key is lost or stolen even if you have a spare key fob. This is because the key fob needs to be reset at the dealership in order to work again. It can be a costly and frustrating experience therefore it's a great idea to learn how to reset the system yourself.

To reset the system, unplug the battery for about 15 minutes. This will eliminate any residual electric current from the onboard computer. Next, disconnect the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

To program a new key, or a spare, place it in the slot and turn the ignition to ON. The key should remain in the ignition for around five seconds, and then switch off. The key's information has been transferred to the computer of your vehicle and the new fob can start your car. You can program any number of fobs you want however only one must be in use at any given time. This prevents unauthorized people from copying your key and getting ahold of your car. You can purchase a new keyfob online, but it still needs to be cut and programmed by an authorized dealer.