How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea always to have a spare key on hand in case you lose the keyfob you were using or it stopped working. This article will provide everything you should be aware of adding, changing, or reprogramming your Mazda 3 key fobs.
A word of caution Some keys require programming by a locksmith professional or dealer, while others don't. Only use official Mazda replacements to replace your key fob.
How do you add an extra key
You can also add an additional key in case you don't have a spare key available or if you accidentally break the one you already have. To accomplish this, you'll need a small flathead screwdriver and an CR2025 battery that's new. Once you've got all the equipment, it is time to open the key fob. Find the auxiliary key release. It's located underneath the metal part and is easy to locate. The cover that covers the back should come off as soon as you press the button. Then, insert the screwdriver head into the notch at the top or in the space, and pry the metal part off.
Insert your spare key or a new one into the slot after taking out the auxiliary key. Set the ignition to ON, and wait for about five seconds before turning it to off. This will allow the system to recognize the new key and begin your vehicle in the future.
mazda 2 key fob is only possible to program three keys into your Mazda 3. You don't want to use more than two key fobs in order to start your car. This is a safety measure to stop unauthorised users from activating your keys and then starting your car.
How do I reprogram an unrepaired key?
If you have a spare key, it's important to know how to reprogram it in the event that the original key you had is stolen or lost. This will stop unauthorized persons from starting your car, or taking it. This will work with any Mazda. You'll require two keys that are functioning to start the reprogramming process. If you don't own two keys that function then it's best to bring your car to a dealer to get this done.
Begin by getting in your driver's seat and close the door, except for the one that's opened. Turn the ignition on and insert the first functioning key. Take five seconds before removing the key. Repeat with the second key.
Once you've programmed your new key, you should have three keys that you can use to start your car in the future. Test each key to be sure that they're operating correctly before taking them off.
It's a good idea purchase a spare Mazda 3 key fob, particularly if you're a driver who often loses your key or has other issues with it. You can buy one online or at your local auto store, but make sure to read the reviews prior to purchasing so you can avoid purchasing an item that isn't compatible with your vehicle.
How to change the battery on a spare key?
It's a nightmare to discover that the key fob you used to use has gone out, and you are locked out of your vehicle. Luckily, it's easy to replace the battery and save yourself some cash at the dealership.
The first step is to press the auxiliary key button located on the back of the key fob. This will remove the metal key and reveal two slots on the opposite side of the case. Press the flathead screwdriver into one of these slots and then gently pry apart the two halves of the case. Once the battery is fully exposed, remove the case and put it in a place where you won't forget it.
Make sure you have a new battery ready before you begin. They are available at any store that sells batteries or at an Mazda dealer near Winter Garden. Using the right type of battery will ensure that your key fob functions properly.
Replace the cap on the battery and then replace the battery. Be careful not damage the rubber ring on which the battery rests. The two halves should be pressed together until you hear a click.
How to Reset the Keyless Entry System
The key fob on your Mazda 3 is not only an extra convenience, but also an important security feature. The car won't start if the key is lost or stolen even if you have an extra fob. This is because the key fob needs to be reprogrammed at the dealership in order to work properly. This can be a costly and frustrating experience and it's a good idea to learn how to reset the system yourself.
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. Check for continuity between the terminals.
Place the key into the slot, and turn on the ignition. The ignition should be turned off after approximately five minutes. The key's information is added to the computer in your car and the new fob can start your vehicle. You can program up to three fobs, however, you should only use one at one time. This will stop unauthorized individuals from stealing your keys and gaining access to your car. You can purchase a brand new keyfob online, however it still needs to be programmed and cut by an authorized dealer.