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

It's a good idea to keep an extra key in your pocket regardless of whether you lost the keyfob you were using or it stopped working. This article will explain everything you should be aware of when adding, changing, or changing your Mazda 3 key fobs.

A word of caution Some keys require programming by a locksmith professional or dealer, while others do not. Be sure to only use genuine Mazda replacements for your key fob.

How do I add a spare key?

You can also add an additional key in case you don't have a spare key available or if you accidentally damage the one you have. To accomplish this, you'll require a small flathead screwdriver and an CR2025 battery that's new. Once you have these items you can remove the key fob and swap the battery. Locate the auxiliary key release. It's located on the underside of the metal component and is easy to find. The back cover should slide off the moment you press the button. Next, place the screwdriver's head into the notch or spacing at the top of the metal component and pry it off.

After the auxiliary key has been removed, insert the new or spare key into the slot. Turn the ignition on and then wait for around five seconds, and then turn it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.

It's important to know that you can only program up to three keys on your Mazda 3. The final thing you want is to have more than two working key fobs and not be capable of getting your vehicle started. This is a safety precaution that is designed to block unauthorized users, like valet drivers from activating your key and thereby starting your car.

How to Reprogram a spare key

It's a smart idea learn how you can reprogram a spare key in the event that the original key is lost or stolen. This will prevent unauthorised persons from abusing your vehicle and re-starting it. https://www.thekeylab.co.uk/mazda-car-keys/ should work with any Mazda but you'll need two keys working to begin the process of reprogramming. If you don't own two working keys, it's best to take your Mazda to a dealer to get this completed.

Start by stepping into the driver's position and closing all the doors except the one that is open. Insert the first working key into the slot, then set the ignition to ON. Wait five seconds before removing the key. Repeat the process with the second key.

After you finish programming your new key, you'll have 3 keys that will allow you to start your car in the near future. Before placing each key in storage, make sure it's functioning correctly.

You should consider buying a spare Mazda 3 remote, especially when your car is susceptible to problems. You can buy one online or at your local auto store, but be sure to read reviews before purchasing so that you can avoid getting a key fob that's not compatible with your vehicle.

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 in a position to not unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will remove the auxiliary key and expose an opening on both sides of the case. Place the flathead in one of these slots, and gently pry the two halves apart. Once the battery is fully exposed, take it out of the case and place it in a spot where you'll never forget it.

Before you start, make sure you have a brand new replacement battery. They can be found at any retailer that sells batteries or at an Mazda dealer close to Winter Garden. Using the right type of battery will ensure that your key fob functions perfectly.

Next, put the replacement battery into place and replace the cap on the battery. Be careful not to scratch the small rubber ring that the battery sits on. Then press the two halves of the key fob until you hear the sound of clicking.

How do you reset the Keyless Entry System

The Mazda 3 key fob is not just a practical feature. It's also an important security feature. If you lost your key or had it stolen the car will not start even if you have the spare key fob. This is because the key fob has to be reprogrammed by the dealership in order to work properly. This can be a painful and costly experience. Therefore, it's advisable to understand how you can reset the system.

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Disconnect the battery from the system for 15 minutes. This will eliminate any remaining power from the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Check for continuity between the terminals.

To program a new key, or a spare, place it in the slot and set the ignition to ON. Leave the key in for about five seconds and then switch it off. The key's details are now added to the computer in your car and the new fob is able to start your vehicle. You can program as many fobs as want but only one can be in use at any particular time. This will prevent unauthorised people from stealing your key and getting access to your vehicle. You can purchase a replacement key fob on the internet, but you'll still need to visit an authorized locksmith or dealer to have it cut and programmed.