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

If you've dropped your key fob on the ground or it just stopped working, it's recommended to keep a spare key handy. This article will show you how to add, modify or reprogramme your Mazda 3 keyfobs.

Certain keys require programming from an expert locksmith, while others don't. Only use genuine Mazda 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 dealership when you buy your mazda 3 remote key 3 or accidentally break your current key, don't worry -- there is still the option of adding another key. You'll need a flathead screwdriver, and a new CR2025 battery. Once you've got these items, it is time to open the key fob. First find the auxiliary key release button. It's on the underside of the metal part and is easy to locate. Once you press the button, the back cover should slide off immediately. Then, insert the screwdriver's head into the notch, or the spacing at the top of the metal component and pull it off.

After the auxiliary keys are removed, insert your new or spare key into the slot. Set the ignition to ON and wait for around five seconds before turning it to off. This will add the new key's details to the system which will allow it to start your vehicle in the future.

You can only program three keys on your Mazda 3. The final thing you want is to have more than two working key fobs but not be in a position to get your car started. This is a security measure to prevent unauthorized users from activating your keys and then starting your car.

How do I reprogram a spare key?

It's a good idea to be aware of how to reprogram a spare mazda key key in the event that your original key is lost mazda car key or stolen. This will stop unauthorized persons from starting your vehicle or stealing it. This will work with any Mazda. You'll need two keys that work for the reprogramming to begin. If you don't have the two working keys, you'll have to take your vehicle to the dealership to complete the process.

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

After programming your new key, you should have 3 keys that will work to start your vehicle in the future. Test each key to make sure that they're operating correctly before taking them off.

It's a good idea to buy a spare Mazda 3 key fob, especially if your car is one who frequently loses their key or has other issues with it. You can buy one online or at your local auto store, but make sure to read reviews before purchasing so that you can avoid getting one that's not compatible with your car.

How do you change the battery on a spare key?

There's nothing more frustrating than discovering that the battery on your key fob died and you can't unlock your vehicle. Fortunately, it's easy to replace the battery and save yourself some money at the dealership.

Press the auxiliary button on the back of the keyfob. This will remove the metal key auxiliary to reveal a slot on both sides of the case. Press the flathead screwdriver into one of these slots and then gently break the two parts of the case. When the battery is fully exposed, take it out of the case and put it in a place where you won't forget about it.

Before you begin, make sure you have a new replacement battery. They can be bought at any retailer that sells batteries or from a mazda key cut dealer in Winter Garden. Using the correct type of battery will ensure that your key fob works effectively.

Then, put the new battery in its place and then replace the cap on the battery. Be careful not to damage the small rubber ring that the battery rests on. The two halves should be pressed together until you hear the click.

How do I reset the Keyless Entry System

The key fob on your mazda 2 key not working 3 is not only an extra convenience, but also an important security feature. The car will not start if the key is stolen or lost, even if you've got an extra key fob. The key fob must be reprogrammed by a dealer to enable it to function again. This can be a costly and frustrating ordeal, so it's a good idea to understand how to reset the system yourself.

To reset the system, unplug the battery for 15 minutes. This will eliminate any residual electric current from the onboard computer. Then, disconnect the LF ECU and demand switch connectors. Then, check continuity between the following terminals:

Place the key in the slot, and switch on the ignition. Turn off the ignition after about five minutes. The key's details are now transferred to the computer of your vehicle and the new fob is able to start your car. You can program up to three fobs, however, you should only use one at a time. This stops unauthorized individuals from copying your key and gaining access to your vehicle. You can purchase a new keyfob online, but it will still need to be programmed and cut by a dealer.