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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 on hand, whether you dropped the keyfob you were using or it stopped working. This article will show you how to add, change or reprogramme your Mazda 3 keyfobs.
Warning: Some keys require programming by an expert locksmith, while others do not. Make sure to use official Mazda replacements for your key fob.
How do I add an additional key
If you're not fortunate enough to get a spare key from the dealer when you buy your Mazda 3 or accidentally break the one you have but don't worry, there is still the option of adding another key. To accomplish this, you'll need a small flathead screwdriver and a new CR2025 battery. Once you've got these tools and are ready to remove the key fob and swap the battery. Find the key release auxiliary. The button is located on the underside the metal part. It's easy to find. The back cover should slide off as soon as you press the button. Next, insert the screwdriver's head into the notch or space at the top of the metal part and pull it away.
Once the auxiliary key is removed, insert the new or spare key into the slot. 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 on your Mazda 3. mazda 6 key fob is to have more than two working key fobs and not being able to get your car started. This is a safety precaution that is designed to block unauthorized users, like valet drivers who are not authorized to use your key and thereby starting your car.
How to Reprogram a Spare Key
If you have a spare key, it's a good idea to know how to program it in the event the original key you had is stolen or lost. This will prevent unauthorised persons from taking your car and then starting it. This should work with any Mazda. You will need two keys that are functioning for the reprogramming to begin. If you don't have the two working keys, you'll need take your vehicle to a dealership to have it done.
Start by stepping into driver's seat and shutting all doors, with the exception of the one that is open. Place the working key in the slot, and then turn the ignition to ON. After five seconds, remove the key. Repeat the process with the second key.
After you've programmed your new key, you should have three working keys that you can use to start your vehicle in the future. Before you store each key, make sure it's working properly.
It's a good idea buy a spare Mazda 3 key fob, especially if you're someone who has a tendency to lose their keys or has other issues with it. You can purchase one online or at a local automotive store. Make sure to go through reviews prior to purchasing to ensure you don't buy a key fob which isn't compatible with your car.
How to change the Battery on a spare key
It's very frustrating to discover that your key fob is dead, and you are locked out of your car. It's a good thing that it's simple to replace the battery and save yourself some money at the dealer.
The first step is to press the auxiliary key button on the back of the key fob. This will release the metal key auxiliary and reveal a slot on both sides of the case. Use the screwdriver's flathead to push it into one of these slots and gently break the two sides of the case. After the battery is fully exposed, take it out of the case and put it somewhere that you will not forget it.
Before you begin, be sure you have a new replacement battery. These batteries can be purchased from any store that sells batteries or from a Mazda dealer in Winter Garden. The correct battery is crucial to ensure that your key fob functions correctly.
Replace the cap on the battery and then insert the new battery. Be careful not to scratch the rubber ring that holds the battery. The two halves should be pressed together until you hear a click.
How to reset the system's Keyless Entry System
The key fob inside your Mazda 3 is not only a convenience, it's also an important security feature. If you lose your key, or have it stolen, the car will not 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 costly experience. Therefore, it's best to learn how to reset the system.
To reset the system, unplug the battery for 15 minutes. This will clear any residual electricity from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Then, verify the continuity between the following terminals:
Insert the key into the slot, and turn the ignition ON. Keep the key in place for about five seconds, then turn off. The information from the key will be saved to your car's computer, and the new fob will be able to start your vehicle in the future. You can program up to three fobs, however, you must only use one at one time. This will prevent unauthorised people from stealing your keys and getting access to your car. You can purchase a replacement key fob online, but you'll still need to go to an authorized locksmith or dealer to have it cut and programmed.