How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea to keep an extra key in your pocket no matter if you've dropped your keyfob or it stopped working. This article will tell you how to add, modify and re-programme your mazda 2 key 3 keyfobs.

Note: Some keys require programming from an expert locksmith, while others do not. Make sure you only use official Mazda replacements for your key fob.

How do I add an additional key

If you're not fortunate enough to receive a spare keys from the dealership when you buy your mazda key replacement 3 or accidentally break your current one but don't worry, there's a way to add another key. To accomplish this, you'll require a small screwdriver with a flat head and an CR2025 battery that's new. Once you have the items then it's time to open the key fob. Find the key release auxiliary. It's located on the underside of the metal part and is easy to find. The cover that covers the back should come off the moment you press the button. Then, you can insert the screwdriver's head into the notch, or the spacing on the top of the metal component and pry it off.

Insert your spare key or a new one into the slot following the removal of the additional key. Set the ignition to ON, and wait for around five seconds before setting it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.

It is only possible to program three keys on your Mazda 3. The last thing you want is to have more than two working key fobs but not be in a position to get your vehicle started. This is a security measure to stop unauthorised users from activating your keys and launching your car.

How to Reprogram a Spare Key

It's a good idea to know how you can reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorised people from starting your car or stealing it. This should work with any mazda 2 key fob. You'll need two keys that are functioning for the reprogramming to begin. If you don't own two keys that work it's recommended to take your car to a dealer to have this done.

Begin by getting into your driver's seat and close the door, except for the one that's opened. Insert the first working key in the slot, and then turn the ignition to the ON position. Wait five seconds, then remove the key and repeat the process with the second key.

Once you've programmed your new key, local you should have three working keys you can use to start your vehicle in the future. Check each key to make sure they're working correctly before throwing them away.

It's a good idea to purchase an extra Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. You can buy one online or in your local auto store. Make sure you look up reviews before you purchase to ensure you don't buy an item that isn't compatible with your car.

How to Change the Battery on a spare Key

There's nothing more frustrating than discovering that the battery in your key fob has gone out and you're not able to unlock your vehicle. Luckily, it's easy to replace the battery and save some money at the dealer.

Press the auxiliary key button located at the back of the keyfob. This will release the key from the metal and reveal an opening on each side of the case. The flathead should be inserted into one of these slots, and then gently push the two halves of the case apart. Once the battery has been fully exposed, take it out of the case and place it somewhere you will not forget it.

Be sure to bring a replacement battery before you begin. These batteries can be purchased at any retailer 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 correctly.

Then, put the new battery in place and replace the cap on the battery. Be careful not to scratch the rubber ring on which the battery rests. Finally, press the two halves of the key fob together until you hear the sound of a click.

How do I reset the Keyless Entry System

The key fob in your Mazda 3 is not only an extra convenience, but also an important security feature. The car will not start if the key is lost or stolen even if you have an extra key fob. This is because the fob that you have to be reprogrammed by the dealership in order to work properly. It's a difficult and costly ordeal. Therefore, it's best to know how to reset the system.

To reset the system, unplug the battery for approximately 15 minutes. This will eliminate any residual power from the on-board computer. Then, disconnect the LF-ECU and demand switch connectors. Then, verify the continuity between the following terminals:

Place the key in the slot and turn on the ignition. Leave the key in for about five seconds and then turn it off. The key's details will be added to the vehicle's computer and the new fob will be able start your vehicle in the future. You can program any number of fobs you need, but only one should be used at a specific time. This will stop unauthorised people from copying your key and gaining access to your vehicle. You can purchase a replacement key fob on the internet, but you'll still need to go to a dealer or locksmith to cut it and get it programmed.