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

If you've dropped your key fob on the ground or it simply stopped working, it's recommended to keep an extra key available. This article will go over everything you need to be aware of adding, changing, or reprogramming your mazda cx-5 key replacement cost 3 key fobs.

A word of warning Certain keys require programming by a professional locksmith or dealer, while others don't. Make sure to use genuine Mazda replacements for your key fob.

How to Add a Spare Key

If you're unable to find a spare key from the dealership when you buy your Mazda 3 or accidentally break the one you have Don't fret, there is still a way to add another key. To accomplish this, you'll need an inexpensive flathead screwdriver as well as an updated CR2025 battery. Once you have these items, it's time to access the key fob and change the battery. Locate the auxiliary key release. It's located on the underside of the metal piece and is easy to find. The cover on the back should fall off as soon as you press the button. Then, place the screwdriver's head in the notch at the top or in the space, and pry the metal part off.

Once the auxiliary key has been removed, insert your new or spare key into the slot. Set the ignition to ON and wait for five seconds before turning it to OFF. This will register the new key's details to the system, allowing it to start your vehicle in the future.

You can only program three keys into your Mazda 3. You don't want to use more than two key fobs in order to start your car. This is a safeguard to prevent unauthorized users from activating your keys and launching your vehicle.

How do I reprogram a spare key?

If you have a spare key it's best to know how to reprogram it in the event that your original key gets stolen or lost. This will stop unauthorised people from taking your car and then starting it. This method should work on any Mazda but you'll need two keys that work to begin the process of reprogramming. If you don't own two working keys, you'll have to bring your vehicle to the dealership to have it done.

Begin by getting in your driver's seat, and shutting the door, excluding for the one that's open. Turn the ignition on and then insert the first working key. After five seconds, remove the key and repeat with the second key.

After you finish programming your new key you should have 3 keys that work to start your car in the near future. Before placing each key in storage, make sure it's working properly.

You should think about purchasing a spare Mazda 3 remote, especially if your car is prone to issues. You can purchase one online or in your local auto store. Make sure to go through reviews prior to purchasing to ensure that you don't purchase 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 is dead, and you are locked out of your Car Key Replacement Specialist. It's easy to change the battery yourself and save money at the dealer.

The first step is to press the auxiliary button on the back of the key fob. This will remove the key auxiliary and reveal slots on both sides of the case. Place the flathead in one of these slots and then gently push the two halves apart. Once the battery has been fully exposed, remove the case and put it in a place where you won't forget about it.

Before you begin, make sure you have a brand new replacement battery. They can be bought at any store that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is vital to make sure that your keyfob functions properly.

Next, put the new battery into place and replace the cap on the battery. Be careful not to damage the small rubber ring that the battery rests on. Finally, press the two halves of the key fob together until you hear a click.

How to reset the system's Keyless Entry System

The key fob that you have in your Mazda 3 is not only a convenience, it's also an important security feature. The car won't start if the key is stolen or lost even if you have a spare key fob. The key fob has to be reprogrammed by the dealer to enable it to function again. It can be a costly and frustrating ordeal It's a good idea to learn how to reset the system yourself.

Disconnect the battery from the system for 15 minutes. This will eliminate any residual electrical current from the computer on board. Next, disconnect both the LF-ECU connector and the demand switch connectors. Verify that the connections are in good order between the terminals.

To program an entirely new key or spare, place it in the slot and turn the ignition to ON. Turn off the ignition after approximately five minutes. The key's details will be added to the vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program as many fobs as you need however only one must be used at a particular time. This will prevent unauthorised people from stealing your keys and getting access to your car. You can purchase a new keyfob from the internet, however it will still need to be programmed and cut by a dealer.