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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It’s a good idea to keep a spare key on hand in case you lose your keyfob, or it stopped working. This article will explain everything you should know about the process of adding, changing, and programming your Mazda 3 key fobs.
Be aware that some keys require programming by professional locksmiths, while others do not. Make sure you only use genuine Mazda replacements for your key fob.
How to Add a Spare Key
If you’re not fortunate enough to get a spare key from the dealer when you buy your Mazda 3 or accidentally break your current key do not fret — there’s the option of adding another key. To accomplish this, you’ll require an incredibly small screwdriver, a flathead screwdriver, and an CR2025 battery that’s new. Once you have these items, it’s time to access the key fob and swap the battery. First look for the button that allows you to release the key. It’s located on the underside of the metal portion and is easy to find. 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 space on the top of the metal component and pry it off.
Once the auxiliary key is removed, mazda Key insert the new or spare key into the slot. Set the ignition to ON, and wait for around five seconds before turning it to OFF. This will add the new key’s information to the system and allow it to start your car in the future.
It is important to remember that you can only program up to three keys on your Mazda 3. You don’t want to utilize more than two key fobs in order to start your vehicle. This is a safety precaution that is designed to block unauthorized users, such as valet drivers, from activating your key and thereby starting your car.
How to Reprogram a Spare Key
It’s smart to learn how you can reprogram an extra key in the event that your original key becomes lost or stolen. This will prevent unauthorised persons from taking your car and then starting it. This will work with any Mazda. You’ll need two keys that work to start the reprogramming process. If you don’t own two keys that function, it’s best to take your Mazda to a dealer to have this completed.
Begin by getting in your driver’s seat, and close the door, with the exception for the one that’s opened. Turn the ignition on and insert the first functioning key. Wait for five seconds, then remove the key and repeat with the second working key.
After programming your new key you should have 3 keys that allow you to start your car in the future. Test each key to ensure sure they’re working correctly before throwing them away.
You should think about purchasing an extra Mazda 3 remote, especially in the event that your vehicle is prone to problems. It’s possible to find one on the internet or at a local automotive retailer, but make sure to read the reviews before purchasing so that you can avoid purchasing a key fob that’s not compatible with your car.
How do I change the battery using 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. Luckily, it’s easy to replace the battery and save some cash at the dealership.
Press the auxiliary key button on the back of the keyfob. This will release the metal key and reveal an opening on each side of the case. Place the flathead in one of these slots, and cost then gently pry the two halves of the case apart. Once the battery is fully exposed, remove it and set aside the case somewhere that you won’t forget about it.
Before you begin, make sure that you have a brand new replacement battery. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. The right kind of battery is crucial to ensure that your keyfob is working correctly.
Then, put the new battery in the correct place and replace the cap on the battery. Be careful not to scratch the small rubber ring the battery rests on. Finally, press the two halves of the key fob together until you hear a click.
How do I reset the Keyless Entry System
The Mazda 3 key fob is not just a practical feature. It’s also an important security feature. If you lose your key or had it stolen the car will not start even if you have the spare key fob. This is because the fob that you have to be reprogrammed by the dealership to work once more. It can be a frustrating and costly experience. Therefore, it’s advisable to learn how you can reset the system.
Remove the battery from the system for 15 minutes. This will erase any residual electricity in the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:
To program an entirely new key or spare, place it in the slot and turn the ignition to ON. Switch off the ignition after approximately five seconds. The key’s information has been added to the computer in your car and the new fob will start your vehicle. You can program as many fobs as need however only one should be utilized at any particular time. This will prevent unauthorized people from stealing your keys and getting access to your vehicle. You can purchase a replacement keyfob online, but it must be programmed and cut by an authorized dealer.