How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to keep an extra key in your pocket in case you lose your keyfob or it was unable to function. This article will explain how to add, change, and reprogramme your Mazda 3 keyfobs.
Note: Some keys require programming from professional locksmiths, while others don't. Make sure you use only official Mazda replacements to replace your key fob.
How to Add a Spare Key
You can also add a second key if you don't have a spare key available or when you accidentally damage your current one. To do this, you'll need a small flathead screwdriver and a new CR2025 battery. Once you have the items and tools, you're ready to open the key fob. First look for the auxiliary key release button. The button is on the underside the metal part. It's easy to locate. The back cover should slide off the moment you press the button. Then, you can insert the screwdriver's head into the notch, or the spacing at the top of the metal part and pry it off.
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Insert your new or spare key into the slot following the removal of the auxiliary key. Turn the ignition on and wait for five seconds, then turn it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.
It's important to note that you can only program up to three keys for your Mazda 3. The last 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 safeguard to stop anyone who is not authorized from activating your keys and launching your vehicle.
How to reprogram an unrepaired key?
It's smart to learn how you can reprogram an extra key in the event that your original key is lost or stolen. This will prevent unauthorised persons from taking your car and then starting it. This should work with any Mazda. You'll need two keys that are working to start the reprogramming process. If you don't have two keys that work it's recommended to take your vehicle to a dealer to have this completed.
Begin by stepping into your driver's seat, and close the door, with the exception for the one that's been opened. Set the ignition to ON and insert the first functioning key. Wait five seconds before removing the key. Repeat the process with the second key.
After you've programmed your new key, you'll have three keys that will be able to start your car in the future. Before placing each key in storage, make sure that it's working 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. It's possible to find one on the internet or at your local automobile store, but be sure to read the reviews before buying so that you can avoid purchasing an item that isn't compatible with your car.
How do I change the battery on a spare key
There's nothing more frustrating than finding that your key fob battery has failed and you are unable to unlock your car. It's a good thing that it's simple to replace the battery and save some money at the dealer.
The first step is to press the auxiliary key button located on the back of the key fob. This will detach the key's metal cover and reveal two slots on the opposite side of the case. Put https://www.thekeylab.co.uk/mazda-car-keys/ into one of these slots, and then gently pry the two halves of the case apart. Once the battery has been fully exposed, remove the case and put it somewhere that you will not forget it.
Make sure you have a new battery ready prior to starting. These batteries can be purchased 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 is working effectively.
Replace the cap of the battery and then install the new battery. Be careful not to damage the rubber ring that holds the battery. Then press the two halves of the key fob until you hear an audible click.
How to Reset the system's Keyless Entry System
The key fob on your Mazda 3 is not only a convenience, it's also an important security feature. If you lost your key or had it stolen the car will not start even if it has the spare key fob. This is because the key fob has to be reprogrammed by the dealership in order to work once more. It can be a frustrating and costly experience. Therefore, it's recommended to learn how to reset the system.
To reset the system, disconnect the battery for approximately 15 minutes. This will clear any residual electric current from the onboard computer. Next, disconnect both the LF-ECU connector as well as the demand switch connectors. Then, verify the continuity between the following terminals:
To program the new key or spare, insert it into the slot and set the ignition to ON. Switch off the ignition after approximately five minutes. The key's information has been added to the computer in your car and the new fob is able to start your car. You can program any number of fobs you want however only one should be in use at any particular time. This stops unauthorized individuals from copying the key and getting ahold of your car. You can purchase a replacement key fob online, but you'll still need to go to a locksmith or dealer in order to get it cut and programmed.
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