How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key in your pocket, whether you dropped your keyfob, or it stopped working. This article will show you how to add, alter, and reprogramme your Mazda 3 keyfobs.
A word of warning: some keys require programming by a professional locksmith or dealer, whereas others don't. Be sure to only use official Mazda replacements for your key fob.
How do you add a spare key
You can add a second key if you don't have a spare key or if you accidentally damage the one you already have. You'll need a flathead screwdriver, and a new CR2025 battery. Once you've got the tools then it's time to open the key fob. First, locate the button that allows you to release the key. It's located on the underside of the metal part and is easy to find. The cover on the back should fall off when you press the button. Then, place the screwdriver's head in the notch at the top or the space and take the metal part away.
After the auxiliary keys are removed, insert the new or spare key into the slot. Set the ignition to ON and wait for five seconds before turning 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 in your Mazda 3. The one thing you don't want is to have more than two functioning key fobs but not be able to get your car started. This is a safety precaution designed to prevent unauthorized users, such as valet drivers, from activating your key and thereby launching your vehicle.
How to reprogram an unrepaired key?
It's a good idea to know how you can reprogram an extra key in the event that the original key is lost or stolen. This will stop unauthorized persons from taking your car and then starting it. This procedure should work with any Mazda, though you'll need two working keys to start the reprogramming process. If you don't own two working keys it's recommended to take your car to a dealer to get this done.
Begin by getting in your driver's seat, and close the door, except for the one that's been opened. Set the ignition to ON and then insert the first working key. Wait five seconds, then remove the key and repeat with the second working key.
Once you've finished programming your new key, you should have three keys that you can use to start your car in the future. Check each key to make sure that they're operating correctly before placing them away.
You should think about buying an extra Mazda 3 remote, especially when your car is susceptible to problems. You can purchase one on the internet or in your local auto store. Make sure you read reviews before purchasing to ensure you don't buy a key fob which isn't compatible with your car.
How do I change the battery on a spare Key
It's very frustrating to discover that the key fob you used to use has gone out, and you are locked out of your vehicle. Luckily, it's easy to replace the battery and save yourself some money at the dealer.
The first step is to press the auxiliary key button on the back of the key fob. This will take out the metal key auxiliary to reveal slots on both sides of the case. Press the flathead screwdriver into one of these slots and gently break the two halves of the case. Once the battery has been fully exposed, remove the case and put it in a place where you won't forget it.
Before you begin, make sure you have a brand new replacement battery. They can be found in any store that sells batteries or at an Mazda dealer close to Winter Garden. Choosing mazda 3 key fob replacement will ensure that your key fob operates properly.
Replace the cap on the battery and then replace the battery. Be careful not damage the rubber ring that holds the battery. Finally, press the two halves of the key fob together until you hear the sound of clicking.
How can I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenience. It's also an element of security. If you lose your key, or have it stolen the car won't start even if it has the spare fob. This is because the key fob needs to be reset at the dealership to function properly. It can be a stressful and costly process. Therefore, it's advisable to understand how you can reset the system.
To reset the system, disconnect the battery for about 15 minutes. This will remove any remaining electrical current from the computer on board. Next, disconnect the LF-ECU and demand switch connectors. Verify the continuity between the next terminals.
Insert the key into the slot, then switch the ignition on. Leave the key in for around five seconds, and then switch it off. The key information will now be transferred to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program up to three fobs, but you must only use one at each time. This will prevent unauthorized persons from copying your key and gaining access to your vehicle. You can purchase a replacement keyfob on the internet, but it must be cut and programmed by an authorized dealer.