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

Whether you dropped your key fob on the ground or it simply stopped working, it's always recommended to keep an extra key in your pocket. This article will provide everything you must know about changing, adding, and reprogramming your mazda key copy 3 key fobs.

A word of caution Some keys require programming by a professional locksmith or dealer, while other keys do not. Only use genuine Mazda replacements to replace your key fob.

How do I add a spare key?

If you're not lucky enough to receive a spare key from the dealership when you buy your Mazda 3 or accidentally break your current one do not fret -- there is still an option to get another key. To accomplish this, you'll need a small screwdriver with a flat head and an updated CR2025 battery. Once you've got the tools and are ready to remove the key fob and replace the battery. First look for the auxiliary key release button. The button is on the bottom of the metal portion. It's easy to locate. The back cover should come off when you press the button. Then, you can insert the screwdriver's head into the notch or space on the top of the metal part and then pull it off.

Insert your spare mazda key key or a new one into the slot after you have removed the auxiliary key. Set the ignition to ON and wait for five seconds before setting it to OFF. This will add the new key's details to the system and allow it to start your vehicle in the future.

It's important to know that you can only program up to three keys for your mazda 2 key programming 3. The final thing you want is to have more than two functioning key fobs and not be able to get your car started. This is a security precaution designed to prevent unauthorised users, like valet drivers from activating your key and starting your vehicle.

How to Reprogram a Spare Key

It's a smart idea learn how you can reprogram a spare key in the event that your original key becomes lost or stolen. This will prevent unauthorised persons from getting into your car and causing damage to it. This procedure should work with any Mazda, though you'll need two working keys to start the process of reprogramming. If you don't own two working keys, it's best to take your Mazda to a dealer to have this done.

Begin by stepping into your driver's seat, and shutting the door, excluding for the one that's been opened. Turn the ignition on and insert the initial working key. Wait five seconds, then take the key out and repeat the procedure with the second working key.

After you've programmed your new key, you'll have 3 keys that start your car in the future. Test each key to ensure sure that they're operating correctly before taking them off.

It is advisable to purchase an extra Mazda 3 remote, especially in the event that your vehicle is prone to problems. You can purchase one online or at your local auto store. Be sure to go through reviews prior to purchasing so that you don't get a key fob which isn't compatible with your car.

How to Change the Battery on a Spare Key

It's awful to discover that your key fob has died, and you are unable to unlock your vehicle. It's easy to replace the battery yourself and save money at the dealer.

The first step is to press the auxiliary key button on the back of the key fob. This will remove the metal key and reveal a slot on each side of the case. Use the screwdriver's flathead to push it into one of these slots and then gently pry apart the two sides of the case. Once the battery is fully exposed, remove the case and put it in a spot where you'll never forget it.

Before you start, make sure that you have a new replacement battery. They can be found in any store that sells batteries or at an Mazda dealer near Winter Garden. The correct battery is vital to ensure that your keyfob works properly.

Next, put the new battery into place and replace the cap on the battery. Be careful not to scratch the rubber ring that holds the battery. Press the two halves together until you hear a click.

How do I reset the Keyless Entry System

The key fob in your Mazda 3 Keys 3 is not only an extra convenience, but also an important security feature. If you lose your key, or have it stolen, the car will not start even if you have the spare fob. The key fob has to be reprogrammed by the dealer to enable it to function again. This can be a painful and expensive ordeal. So, it's best to learn how you can reset the system.

To reset the system, unplug the battery for approximately 15 minutes. This will take out any remaining electrical current from the computer on board. The next step is to disconnect the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

Put the key in the slot, then switch the ignition on. Turn off the ignition after about five minutes. The information from the key will be transferred to your vehicle's computer and the new fob will be able start your car in the future. You can program any number of fobs you need but only one can be used at any certain time. This will prevent unauthorized persons from copying the key and gaining access to your car. You can buy a new key fob online, however you'll still need to visit an expert locksmith or dealer to have it cut and programmed.