How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key in your pocket no matter if you've dropped your keyfob or it stopped working. This article will tell you how to add, modify or reprogramme your Mazda 3 keyfobs.
Warning: Some keys require programming by an experienced locksmith, whereas others do not. Make sure https://www.thekeylab.co.uk/mazda-car-keys/ use only genuine Mazda replacements to replace your key fob.
How do I add a spare key?
You can add a second key if you don't have a spare key available or in the event that you break the one you have. To accomplish this, you'll need a small flathead screwdriver and an CR2025 battery that's new. Once you have these items then it's time to remove the key fob to change the battery. First look for the key release button for the auxiliary key. It's on the underside of the metal component and is easy to find. The back cover should come off the moment you press the button. Then, put the screwdriver head into the notch at the top or in the space, and pull the metal piece off.
Insert your spare or new key into the slot following the removal of the additional key. Set the ignition to ON, and wait for about five seconds before setting it to off. This will allow the system to recognize the new key and begin your vehicle in the future.
You can only program three keys to your Mazda 3. The final thing you want is to have more than two functioning key fobs and not being able to get your car started. This is a security measure designed to prevent unauthorised users, such as valet drivers who are not authorized to use your key and starting your car.
How to reprogram an unrepaired key?
It's a good idea to learn how you can reprogram a spare key in the event that your original key is lost or stolen. This will stop unauthorised people from starting your car or taking it. This process should work on any Mazda however, you'll require two working keys to start the reprogramming process. If you don't own two working keys, you'll need bring your vehicle to the dealership to get it done.
Start by stepping into driver's seat, shutting all doors, with the exception of the one that is open. Place the first working key in the slot, and then set the ignition to ON. After five seconds, remove the key and repeat the process with the second working key.
After you finish programming your new key, you should have three keys that will allow you to start your car in the near future. Before storing each key, make sure that it's working correctly.
You should think about buying a spare Mazda 3 remote, especially in cases where your car is prone to issues. It's possible to find one on the internet or at a local automotive retailer, but make sure to read reviews before buying so that you aren't purchasing the wrong key fob compatible with your vehicle.
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How to Change the Battery on a spare Key
It's a nightmare to discover that your key fob has died, and you are locked out of your vehicle. It's not a problem 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 metal key and reveal an opening on each side of the case. Put the flathead screwdriver in one of these slots and then gently take apart the two halves of the case. When the battery is completely exposed, take it out and set aside the case somewhere that you won't forget about it.
Be sure to have a replacement battery before you begin. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. The correct battery is vital to ensure that your key fob functions correctly.
Next, put the replacement battery into place and replace the battery cap. Be careful not to scratch the rubber ring on which the battery rests. The two halves should be pressed together until you hear a click.
How do you reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It also serves as a security measure. The car won't start if your key is lost or stolen, even if you've got an extra key fob. This is because the key fob has to be reprogrammed by the dealership in order to work properly. It can be a costly and stressful experience, so it's a good idea to know how to reset the system yourself.
Remove the battery from the system for 15 minutes. This will clear any residual electric current from the onboard computer. Then, disconnect both LF-ECU connector as well as the demand switch connectors. Verify that the connections are in good order between the terminals.
Place the key in the slot, and turn the ignition ON. Put the key in for about five seconds, then turn it off. The key information will now be saved to your car's computer and the new fob will be able to start your car in the future. You can program up to three fobs but you should only use one at a time. This prevents unauthorized people from copying your key and gaining access to your car. You can buy a new keyfob online, but it still needs to be programmed and cut by a dealer.
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