How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have an extra key in your pocket in case you lose your keyfob or it stopped working. This article will explain how to add, modify and re-programme your Mazda 3 keyfobs.
Certain keys require programming from an expert locksmith, while others don't. Be sure to only use genuine Mazda replacements for your key fob.
How to add a spare key
You can add another key in the event that you don't have a spare key available or when you accidentally damage your existing one. You'll need a flathead screwdriver and a CR2025 new battery. Once you've got these tools then it's time to remove the key fob and change the battery. First find the key release button for the auxiliary key. It's on the underside of the metal component and is easy to locate. Once you hit the button, the back cover should be removed immediately. Then, place the screwdriver head into the notch on top or the space, and remove the metal part.
Insert the spare or new key into the slot after removing the secondary key. Set the ignition to ON and wait about five seconds before turning it to OFF. This will add the new key's information to the system, allowing it to start your car in the future.
You can only program three keys into your Mazda 3. The one thing you don't want is to have more than two working key fobs and not being capable of getting your vehicle started. This is a safety precaution designed to prevent unauthorized users, such as valet drivers who are not authorized to use your key and thereby starting your car.
How do I reprogram a spare key
It's a smart idea know how to reprogram an extra key in the event that your original key becomes lost or stolen. This will stop unauthorized persons from starting your vehicle or stealing it. This will work with any Mazda. You will need two keys that work for the reprogramming to begin. If you don't have two working keys, you should take your Mazda to a dealer to have this completed.
Start by stepping into the driver's seat, shutting all doors, with the exception of the one that is open. Set the ignition to ON and insert the first working key. After five seconds, remove the key. Repeat with the second key.
Once you've programmed your new key, you'll have three working keys that you can use to start your vehicle in the future. Before storing each key, make sure it's working properly.
It is advisable to purchase a spare Mazda 3 remote, especially in cases where your car is prone to problems. You can buy one online or at a local automotive store. Be sure to read reviews before purchasing to ensure that you don't purchase an item that isn't compatible with your car.
How do I change the battery with a spare key?
There's nothing worse than discovering that the battery on your key fob failed and you are unable to unlock your car. It's a good thing that it's simple to replace the battery and save yourself some money at the dealership.
Press the auxiliary button on the back of the keyfob. This will remove the metal key auxiliary and reveal slots on both sides of the case. Place the flathead in one of these slots and gently pry the two halves apart. Once the battery is fully exposed, remove it and put it away somewhere that you won't forget about it.
Before you start, make sure you have a brand new replacement battery. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is vital to ensure that your keyfob is working properly.
Replace the cap on the battery and then put in the new battery. Be careful not to damage the rubber ring on which the battery rests. Press https://www.thekeylab.co.uk/mazda-car-keys/ until you hear a click.
How to reset the system's Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It also serves as an element of security. The car will not start if your key is stolen or lost, even if you've got an extra key fob. This is because the key fob needs to be reprogrammed at the dealership in order to work again. It can be a stressful and expensive ordeal. Therefore, it's advisable to understand how you can reset the system.
Remove the battery from the system for 15 minutes. This will eliminate 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:
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Insert the key into the slot and switch on the ignition. Put the key in for about five seconds, then switch off. The information from the key will be added to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program up to three fobs, but you must only use one at one time. This will prevent unauthorized persons from copying your key and getting ahold of your car. You can purchase a new key fob online, but you'll still have to visit a locksmith or dealer in order to get it cut and programmed.
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