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

It's a good idea always to keep an extra key in your pocket no matter if you've dropped your keyfob, or it stopped working. This article will explain everything you need to be aware of when adding, changing, or changing your Mazda 3 key fobs.

Be aware that some keys require programming from a professional locksmith, while others do not. Make sure you use only authentic mazda transponder key programming replacements to replace your key fob.

How do I add a spare key

If you're not fortunate enough to receive a spare keys from the dealer when you buy your mazda key replacement cost 3 or accidentally break your current one but don't worry, there's still an option to get another key. To accomplish this, you'll require a small screwdriver with a flat head and the new CR2025 batteries. Once you've got these items and tools, you're ready to open the key fob. First, locate the key release button for the auxiliary key. It's located underneath the metal component and is easy to locate. The cover that covers the back should come off the moment you press the button. Then, place the screwdriver's tip into the notch on top or into the space and pry the metal part off.

Insert your spare or new key into the slot after you have removed the auxiliary key. Set the ignition to ON and wait about five seconds before turning it to off. This will allow the system to recognize the new key and start your vehicle in the future.

You can only program three keys into your Mazda 3. The most important thing is to have more than two working key fobs but not be capable of getting your vehicle started. This is a safety precaution designed to stop unauthorized users, like valet drivers, from activating your key and thereby starting your car.

How to Reprogram a Spare Key

If you have a spare key it's important to know how to program mazda 2 key fob to reprogram it in the event that the original key you had is lost or stolen. This will prevent unauthorised persons from taking your car and then starting it. This will work with any mazda 3 replacement key. You'll need two keys that are working to begin the reprogramming process. If you don't own two keys that function then it's best to bring your vehicle to a dealer to have this completed.

Start by stepping into the driver's position and close all the doors, except the one that is open. Turn the ignition on and insert the initial working key. Wait five seconds before removing the key. Repeat with the second key.

Once you've finished programming your new key, you should have three working keys that you can use to start your car in the future. Test each key to ensure sure they're working correctly before putting them away.

You should think about buying a spare Mazda 3 remote, especially in cases where your car is prone to issues. You can purchase one online or at a local automotive store. Make sure you go through reviews prior to purchasing to ensure 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 depressing to find out that your key fob has died, and you are unable 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 metal auxiliary key and expose two slots on the sides of the case. Press the flathead into one of these slots and then gently pull the two halves of the case apart. Once the battery is fully exposed, take it out of the case and place it in a spot where you'll never forget about it.

Before you start, make sure you have a new replacement battery. 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 essential to ensure that your keyfob is working correctly.

Replace the cap on the battery and then put in the new battery. Be careful not to damage the small rubber ring that the battery is placed on. The two halves should be pressed together until you hear a click.

How do I reset the Keyless Entry System

The key fob inside your Mazda 3 is not only a convenience, it's also an important security feature. The car will not start if the key is stolen or lost, even if you've got an extra fob. This is because the key fob has to be reprogrammed by the dealership to work again. It can be a stressful and expensive ordeal. Therefore, it's recommended to learn how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will remove any residual electricity from the onboard computer. Next, disconnect both the connectors for the LF-ECU and the demand switch connectors. Check continuity between the following terminals.

Insert the key into the slot, and switch the ignition on. Keep the key in place for about five seconds, then switch it off. The key's information is stored in the car's computer and the new fob will start your vehicle. You can program as many fobs you want but only one can be used at a specific time. This will prevent unauthorised people from stealing your keys and gaining access to your car. You can purchase a brand new keyfob online, however it must be programmed and cut by a dealer.