How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it just stopped working, it's always a good idea to have a spare key handy. This article will tell you how to add, modify or reprogramme your Mazda 3 keyfobs.
A word of warning Certain keys need to be programmed by a locksmith professional or dealer, whereas other keys do not. Make sure you use only genuine Mazda replacements to replace your key fob.
How to Add a Spare Key
If you're unable to receive a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one Don't fret, there's an option to get another key. You'll need to use an flat-head screwdriver and the CR2025 replacement battery. Once you've got these items, it is time to open the key fob. First look for the button that allows you to release the key. It's located under the metal component and is easy to locate. The back cover should come off as soon as you press the button. Then, you can insert the screwdriver's head into the notch at the top or the space and remove the metal part.
Insert your new or spare key into the slot after removing the additional key. Set the ignition to ON and wait for 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 into your Mazda 3. You don't want to use more than two key fobs in order to start your vehicle. This is a precautionary measure to stop unauthorised users from activating your keys and then starting your car.
How do you reprogram a spare key
If you have a spare key it's important to know how to program it if the original key you had is lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This process is compatible with any Mazda, though you'll need two working keys to begin the reprogramming. If you don't have two working keys, you'll have to bring your car to the dealership to get it done.
Begin by getting into your driver's seat, and closing the door, except for the one that's been opened. Set the ignition to ON and insert the initial working key. After five seconds, remove the key. Repeat the process with the second key.
After you've programmed your new key, you should have three working keys you can use to start your vehicle in the future. Test each key to make sure that they're functioning properly before taking them off.
It's a good idea buy an extra Mazda 3 key fob, especially if you're a driver who often loses your key or has other issues with it. You can find one online or at your local automobile store, but be sure to read the reviews prior to purchasing so you aren't buying the wrong key fob compatible with your vehicle.
How to change the battery on a spare key?
There's nothing worse than finding that the battery on your key fob been damaged and you're unable to unlock your vehicle. Luckily, it's easy to replace the battery and save some money at the dealer.
Press the auxiliary button on the back of the keyfob. This will take out the metal key auxiliary to reveal an opening on both sides of the case. Press the flathead screwdriver into one of these slots and then gently break the two halves of the case. Once the battery is fully exposed, take it out of the case and place it in a spot where you'll never forget it.
Be sure to bring a replacement battery prior to beginning. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. The correct battery is essential to ensure that your keyfob works correctly.
Replace the cap on the battery, and then replace the battery. Be careful not damage the rubber ring that holds the battery. Then, press mazda 3 key fob replacement 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 piece of equipment for convenience. It also serves as an important security feature. The car will not start if the key is stolen or lost, even if you've got a spare key fob. This is because the key fob has to be reprogrammed at the dealership in order to work again. It's a difficult and costly ordeal. So, it's best to learn how you can reset the system.
Disconnect the battery from the system for 15 minutes. This will eliminate any remaining electrical power in the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:
Place the key into the slot, and switch on the ignition. The ignition should be turned off after approximately five seconds. The key's information has been added to the computer in your car and the new fob will start your car. You can program any number of fobs you want however only one must be used at any specific time. This will stop unauthorised people from copying the key and gaining access to your vehicle. You can purchase a new keyfob from the internet, however it will still need to be cut and programmed by a dealer.