How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have an extra key at hand no matter if you've dropped your keyfob, or it has stopped working. This article will cover everything you must know about adding, changing, or programming your Mazda 3 key fobs.
Note: Some keys require programming from professional locksmiths, while others don't. Only use genuine Mazda replacements to replace your key fob.
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How do you add an extra key
You can also add a second key if you don't have a spare key or if you accidentally break your existing one. https://www.thekeylab.co.uk/mazda-car-keys/ 'll need a flathead screwdriver, and a new CR2025 battery. Once you have these items you can open up the key fob and replace the battery. Find the auxiliary key release. It's on the underside of the metal piece and is easy to locate. When you press the button, the back cover should fall off right away. Then, insert the head of the screwdriver into the notch or space at the top of the metal component and then pull it off.
After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition to ON, and wait about 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. You don't want to have to use more than two keys to start your car. This is a safeguard to stop unauthorized users from activating your keys and starting your vehicle.
How to Reprogram a spare key
If you have a spare key, it's best to know how to reprogram it in case your original key is stolen or lost. This will prevent unauthorised persons from taking your car and then starting it. This process should work on any Mazda however, you'll require two working keys to start the reprogramming. If you don't have the two working keys, you'll need to bring your vehicle to the dealership to get it done.
Start by getting into the driver's position and close all the doors with the exception of the one that is open. Turn the ignition on and insert the first functioning key. Take five seconds before removing the key. Repeat with the second key.
After programming your new key, you should have three keys that allow you to start your car in the near future. Before placing each key in storage, make sure that it's functioning properly.
You should think about purchasing a spare Mazda 3 remote, especially if your car is prone to problems. You can buy one online or in your local automotive store. Make sure you look up reviews before you purchase to ensure that you don't purchase a key fob which isn't compatible with your vehicle.
How do I change the battery with a spare key?
It's depressing to find out that the key fob you used to use has gone out and you're in a position to not unlock your vehicle. It's easy to replace the battery yourself and save 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 remove the key auxiliary to reveal an opening on both sides of the case. The flathead should be inserted into one of these slots, and then gently pull the two halves apart. Once the battery is fully exposed, take it out and place it in a safe place somewhere safe from being lost.
Be sure to bring an additional battery prior to beginning. They can be found at any store that sells batteries or at an Mazda dealer near Winter Garden. Using the right type of battery will ensure that your key fob is working perfectly.
Next, put the new battery into place and replace the cap on the battery. Be careful not to scratch the small rubber ring that the battery rests on. Then, press the two halves of the key fob until you hear the sound of a click.
How to reset the system's Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It also serves as a security measure. The car will not start if your key is stolen or lost, even if you've got an extra 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 stressful experience and it's a good idea to know how to reset the system yourself.
To reset the system, disconnect the battery for 15 minutes. This will remove any residual electricity from the onboard computer. Next, disconnect the LF-ECU and demand switch connectors. Check for continuity between the terminals.
Place the key into the slot and turn the ignition ON. Leave the key in for around five seconds, and then turn off. The key information will now be added to your vehicle's computer and the new fob will be able to start your vehicle in the future. You can program as many fobs as want but only one can be used at any given time. This will keep unauthorised individuals from stealing your keys and gaining access to your car. You can purchase a new keyfob online, however it'll still need to be cut and programmed by a dealer.
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