How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the ground or it has stopped working, it's recommended to keep a spare key handy. This article will explain how to add, change or reprogramme the Mazda 3 keyfobs.
Note: Some keys require programming by an expert locksmith, while others do not. Make sure to use genuine Mazda replacements for your key fob.
How to add a spare key
If you're not fortunate enough to find a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current key, don't worry -- there's an option to make another key. To accomplish this, you'll require an inexpensive flathead screwdriver as well as an CR2025 battery that's new. Once you've got these items you can access the key fob to change the battery. First look for the key release button for the auxiliary key. The button is on the underside of the metal portion. It's easy to find. The cover that covers the back should come off when you press the button. Next, insert the screwdriver's head into the notch or spacing on the top of the metal component and then pull it off.
Insert your new or spare key into the slot after removing the secondary key. Switch the ignition on and wait for five seconds, and then turn it to OFF. This will add the new key's information to the system that will allow it to start your vehicle in the future.
It's important to keep in mind that you can only program up to three keys for your Mazda 3. You don't want to have to use more than two key fobs to start your vehicle. This is a safety measure to stop unauthorised users from activating your keys and starting your vehicle.
How to Reprogram a spare key
If you have a spare key it's important to know how to reprogram it in case your original key gets stolen or lost. This will keep unauthorised persons from starting your vehicle or taking it. This will work with any Mazda. You'll require two keys that are working for the reprogramming to begin. If you don't have two keys that function it's recommended to take your Mazda to the dealer to have this done.
Begin by stepping into your driver's seat, and closing the door, except for the one that's open. Place the first working key into the slot, then turn the ignition to the ON position. Take five seconds before removing the key. Repeat with https://www.thekeylab.co.uk/mazda-car-keys/ .
After you've programmed your new key, you should have three working keys that you can use to start your car in the future. Before placing each key in storage, make sure that it's working correctly.
It is advisable to purchase a spare Mazda 3 remote, especially when your car is susceptible to issues. You can buy one online or at your local automobile store, but make sure to read the reviews before buying so that you can avoid getting the wrong key fob compatible with your car.
How do I change the battery on a spare key
It's a nightmare to discover that your key fob is dead, and you are locked out of your vehicle. It's a good thing that it's simple to replace the battery and save yourself some cash at the dealership.
img width="316" src="
">
Press the auxiliary button on the back of the keyfob. This will remove the key auxiliary to reveal slots on both sides of the case. The flathead should be inserted into one of these slots, and gently pry the two halves apart. When the battery is completely exposed, remove it and set aside the case in a place where you will not forget it.
Before you start, make sure that you have a brand new replacement battery. They can be found at any store that stocks batteries or at a Mazda dealer close to Winter Garden. The correct type of battery is crucial to ensure that your keyfob works correctly.
Next, put the replacement battery in place and replace the battery cap. Be careful not to scratch the rubber ring that holds the battery. The two halves should be pressed together until you hear the click.
How can I reset the Keyless Entry System
The key fob in your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lose your key, or have it stolen, the car will not start even if it has the spare fob. The key fob needs to be reprogrammed by the dealer to make it work again. It can be a frustrating and expensive ordeal. So, it's best 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 terminals.
To program a new key or a spare, insert it into the slot and turn the ignition to ON. Keep the key in place for about five seconds, then turn off. The information from the key will be added to the vehicle's computer and the new fob will be able start your vehicle in the future. You can program as many fobs as would like however only one must be used at any certain time. This will keep unauthorised individuals from stealing your key and getting access to your vehicle. You can purchase a replacement keyfob online, however it'll still need to be programmed and cut by an authorized dealer.
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
