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

It's a good idea always to keep a spare key on hand regardless of whether you lost your keyfob or it was unable to function. This article will tell you how to add, change, and reprogramme your Mazda 3 keyfobs.

Warning: Some keys require programming from a professional locksmith, while others don't. Make sure you only use official mazda 5 key fob dealership key replacement (linked resource site) replacements for your key fob.

How to add a spare key

You can add another key in the event that you don't have a spare key available or in the event that you break your existing one. You'll need to use a flathead screwdriver and a CR2025 new battery. Once you have the items then it's time to open the key fob. Locate the key release auxiliary. It's located on the underside of the metal part and is easy to find. Once you hit the button, the cover should be removed immediately. Next, insert the screwdriver's head into the notch or the space at the top of the metal part and pull it away.

After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition to ON and wait for about five seconds before turning it to off. This will add the new information on the key to the system which will allow it to start your vehicle in the future.

It is only possible to program three keys on your Mazda 3. The final thing you want is to have more than two working key fobs and not being able to get your car started. This is a safeguard to prevent unauthorized users from activating your keys and starting your vehicle.

How to Reprogram a Spare Key

If you have a spare key it's important to know how to program it in the event your original key gets stolen or lost. This will stop unauthorized persons from taking your car and then starting it. This should work with any Mazda. You will need two keys that are functioning to begin the reprogramming process. If you don't have the two working keys, you'll need bring your vehicle to the dealership to get it done.

Begin by putting yourself in the driver's seat and shutting the door, excluding for the one that's been opened. Put the first working key into the slot, and then turn the ignition to the ON position. Take five seconds before removing the key. Repeat the process with the second key.

After you've programmed your new key you should have 3 keys that allow you to start your vehicle in the future. Before you store each key, make sure it's working properly.

You should think about purchasing a spare Mazda 3 remote, especially in the event that your vehicle is prone to problems. You can find one online or at your local automobile store, but be sure to read the reviews before buying so you aren't buying a key fob that's not compatible with your car.

How do you change the battery using a spare key

It's depressing to find out that your key fob is dead, and you are locked out of your car. It's not a problem to replace the battery and save some money at the dealer.

The first step is to press the auxiliary key button on the back of the key fob. This will release the metal key and reveal two slots on the opposite side of the case. Press the flathead screwdriver into one of these slots and gently pry apart the two parts of the case. When the battery is fully exposed, take it out of the case and place it in a place where you won't forget it.

Before you begin, be sure that you have a new replacement battery. You can find these at any store that sells batteries or at an mazda replacement key dealer near Winter Garden. Choosing the correct battery will ensure that your key fob operates effectively.

Next, put the replacement battery in the correct place and replace the battery cap. Be careful not to damage the small rubber ring the battery sits on. Press the two halves together until you hear a click.

How do I reset the system's Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also an element of security. The car won't start if your key is lost or stolen, even if you've got a spare key fob. The key fob needs to be reprogrammed by a dealer to make it work again. This can be a painful and costly experience. Therefore, it's recommended to learn how to reset the system.

Disconnect the battery from the system for 15 minutes. This will eliminate any remaining electricity from the on-board computer. Then, 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 set the ignition to ON. Stop the ignition after about five minutes. The key information will now be transferred to your vehicle's computer, and the new fob will be able to start your car in the future. You can program up to three fobs, but you must only use one at a time. This will prevent unauthorized people from stealing your key and gaining access to your car. You can purchase a replacement key fob online, however you'll still have to visit a locksmith or dealer in order to cut it and programmed.