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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 provide everything you should learn about adding, changing, or reprogramming your Mazda 3 key fobs.
Warning: Some keys require programming by an expert locksmith, while others do not. Make sure you use only official Mazda replacements to replace your key fob.
How to Add a Spare Key
If you're not fortunate enough to find a spare key from the dealership when you purchase your Mazda 3 or accidentally break your current key but don't worry, there's the option of adding another key. You'll need to use the flathead screwdriver, as well as an CR2025 battery. Once you've got these tools you can access the key fob and change the battery. First, locate the key release button for the auxiliary key. It's located on the bottom of the metal portion. It's easy to find. Once you hit the button, the cover should be removed immediately. Then, insert the screwdriver's head into the notch or the space at the top of the metal component and pry it off.
After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition ON and wait for approximately five seconds before turning it to off. This will add the new information on the key to the system which will allow it to start your car in the future.
It is important to remember that you can only program up to three keys for your Mazda 3. You don't want to use more than two key fobs in order to start your vehicle. This is a safety measure to stop anyone who is not authorized from activating your keys and starting your car.
How to Reprogram a spare key
If you have a spare key, it's best to know how to program it if your original key is stolen or lost. This will stop unauthorised people from starting your car or taking it. This procedure should work with any Mazda but you'll need two working keys to start the reprogramming. If you don't have two keys that work, you should take your car to a dealer to have this done.
Start by getting into the driver's seat and closing all the doors except the one that is open. Put the first working key in the slot, then turn the ignition to the ON position. After five seconds, remove the key. Repeat the process with the second key.
Once you've finished programming your new key, you'll have three keys that you can use to start your vehicle in the future. Test each key to be sure they're working correctly before putting them away.
It's a good idea to purchase a spare Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can buy one online or at a local automotive store, but make sure to read reviews before buying so that you can avoid getting one that's not compatible with your vehicle.
How do I change the battery on a spare key?
new mazda key fob G28 Car Keys 's a nightmare to discover that the key fob you used to use has gone out, and you are locked out of your car. It's simple to replace the battery yourself and save money at the dealership.
Press the auxiliary button on the back of the keyfob. This will remove the key made of metal and reveal the slots on both sides of the case. Put the flathead screwdriver in one of these slots. Then, gently remove the two parts of the case. Once the battery is fully exposed, remove it and put it away somewhere safe from being lost.
Be sure to bring an additional battery prior to starting. They can be bought from any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is vital to make sure that your keyfob functions correctly.
Then, place the new battery in place and replace the cap of the battery. Be careful not to scratch the small rubber ring that the battery sits on. The two halves should be pressed together until you hear a click.
How do I reset a Keyless Entry System
The key fob inside your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lost your key or had it stolen the car will not start, even if you have the spare key fob. This is because the key fob has to be reprogrammed at the dealership in order to work again. This can be a painful and costly experience. Therefore, it's best to know how to reset the system.
Remove the battery from the system for 15 minutes. This will eliminate any remaining power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Verify that the connections are in good order between the terminals.
Insert the key into the slot, and turn the ignition ON. Leave the key in for around five seconds and then switch it off. The key information will now be saved to your car's computer and the new fob will be able start your car in the future. You can program as many fobs you need but only one can be used at any specific time. This will keep unauthorised individuals from stealing your key and getting access to your car. You can purchase a new key fob on the internet, but you'll still have to visit an expert locksmith or dealer to cut it and get it programmed.