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

It's a good idea to have an extra key at hand, whether you dropped the keyfob or it stopped working. This article will provide everything you should learn about the process of adding, changing, and programming your Mazda 3 key fobs.

A word of caution Certain keys require programming by a professional locksmith or dealer, while other keys do not. Make sure to use official Mazda replacements for your key fob.

How to add a spare key

You can also add another key in the event that you don't have a spare key available or when you accidentally damage the one you already have. You'll need to use an flat-head screwdriver and the CR2025 replacement mazda key battery. Once you've got all the equipment you need, it's time to open the key fob. Locate the key release auxiliary. The button is located on the bottom of the metal part. It's easy to find. The cover on the back should fall off as soon as you press the button. Then, insert the screwdriver's head into the notch, or the spacing on 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. Switch the ignition on and then wait for around five seconds, then set it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.

It is only possible to program three keys into your Mazda 3. You don't want to use more than two key fobs to start your vehicle. This is a safety measure to prevent unauthorized users from activating your keys and launching your vehicle.

How do I reprogram an unrepaired key?

If you have a spare key it's a good idea know how to program it in the event your original key gets lost or stolen. This will prevent unauthorised persons from stealing your car and starting it. This process is compatible with any Mazda however, you'll require two working keys to start the reprogramming process. If you don't own two keys that function, you should take your mazda car key replacement to the dealer to have this done.

Begin by putting yourself in the driver's seat and close the door, with the exception for the one that's open. Put the first working key in the slot, then set the ignition to ON. Wait for five seconds, then remove the key and repeat the process with a second working key.

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

You should think about purchasing a spare Mazda 3 remote, especially if your car is prone to issues. You can purchase one online or at your local automotive retailer, but make sure to read the reviews prior to purchasing so you can avoid purchasing the wrong key fob compatible with your car.

How do I change the battery on a spare key

It's awful to discover that your key fob has failed and you're unable to unlock your vehicle. It's simple to replace the battery yourself and save money at the dealer.

Press the auxiliary key button at the back of the keyfob. This will take out the metal auxiliary key and expose slots on both sides of the case. The flathead should be inserted into one of these slots, and then gently pry the two halves of the case apart. After the battery is fully exposed, remove the case and place it somewhere you will not forget it.

Make sure you have a replacement battery before you begin. You can purchase them at any store that stocks batteries or at an Mazda dealer near Winter Garden. Using the correct type of battery will ensure that your key fob works properly.

Then, place the new battery into place and replace the cap on the battery. Be careful not damage the rubber ring that holds the battery. Then press the two halves of the key fob until you hear an audible click.

How to reset the system's Keyless Entry System

The key fob on your Mazda 3 is not only an extra convenience, but also an important security feature. If you lose your key, or have it stolen, the car will not start even if you've got the spare key fob. The key fob must be reprogrammed by a dealer to make it work again. It can be a frustrating and costly process. Therefore, it's advisable to learn how you can reset the system.

To reset the system, remove the battery for 15 minutes. This will remove any remaining electric current from the onboard computer. Then, disconnect both the LF-ECU and demand switch connectors. Check for continuity between the terminals.

Place the key in the slot, then switch the ignition on. Put the key in for around five seconds and then switch off. The key information will now be added to your 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 desire but only one can be in use at any given time. This prevents unauthorized people from copying the key and getting ahold of your car. You can purchase a new keyfob online, but it still needs to be programmed and cut by a dealer.