Why Mazda 6 Key Isn't A Topic That People Are Interested In. How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea to keep a spare key on hand in case you lose the keyfob you were using or it has stopped working. This article will teach you how to add, modify, and reprogramme your Mazda 3 keyfobs.

A word of warning Certain keys need to be programmed by a professional locksmith or dealer, whereas others don't. Make sure you only make use of official Mazda replacements for your key fob.

How do I add a spare key?

You can add an additional key if you don't have a spare key available or when you accidentally damage your current one. You'll need an flat-head screwdriver and a new CR2025 battery. Once you've got these tools then it's time to open up the key fob and change the battery. Locate the auxiliary key release. It's located under the metal component and is easy to find. The back cover should slide off as soon as you press the button. Then, insert the screwdriver's head into the notch on top or in the space, and remove the metal part.


After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition to ON, and wait about five seconds before turning it to OFF. This will add the new information on the key to the system that will allow it to start your car in the future.

mazda cx-5 replacement key uk can only program three keys into your Mazda 3. You don't want to have to use more than two key fobs in order to start your car. This is a precautionary measure to stop anyone who is not authorized from activating your keys and starting your vehicle.

How do you reprogram an unrepaired key

It's a smart idea to learn how you can reprogram a spare key in the event that your original key becomes lost or stolen. This will stop unauthorized persons from taking your car and then starting it. This process is compatible with any Mazda however you'll need two keys working to begin the process of reprogramming. If you don't own two working keys it's recommended to take your car to a dealer to have this completed.

Begin by stepping into your driver's seat and shutting the door, excluding for the one that's been opened. Set the ignition to ON and then insert the first working key. After five seconds, take the key out and repeat with the second working key.

After you've completed programming your new key, you should have three working keys that you can use to start your vehicle in the future. Check each key to make sure that they're working properly before throwing them away.

It's a good idea purchase an extra Mazda 3 key fob, especially 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 at your local auto store. Make sure you read reviews before purchasing to ensure you don't buy one that's not compatible with your car.

How do I change the battery on a spare Key

It's awful to discover that your key fob has died, and you are not able to unlock your car. It's not a problem to replace the battery and save yourself some money at the dealer.

Press the auxiliary key button at the back of the keyfob. This will remove the key that is used as an auxiliary key, and expose slots on both sides of the case. Place the flathead in one of these slots and then gently pry the two halves of the case apart. When the battery is completely exposed, remove it and place it in a safe place somewhere safe from being lost.

Before you begin, be sure you have a brand new replacement battery. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob works correctly.

Next, put the replacement battery in the correct place and replace the cap on the battery. Be careful not damage the rubber ring that holds the battery. Then press the two halves of the key fob until you hear a click.

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It also serves as an element of security. If you lose your key or had it stolen the car will not start even if you have the spare key fob. The key fob has to be reprogrammed by a dealer to make it work again. It's a difficult and costly process. Therefore, it's best to learn how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will clear any residual power from the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:

To program the new key or spare, insert it into the slot and turn the ignition to ON. Stop the ignition after about five seconds. The key's information is stored in the car's computer and the new fob is able to start your vehicle. You can program as many fobs as want but only one can be utilized at any specific time. This will prevent unauthorized persons from copying your key and gaining access to your car. You can purchase a replacement keyfob online, but it still needs to be cut and programmed by a dealer.