How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key at hand in case you lose your keyfob or it was unable to function. This article will explain how to add, change, and reprogramme your Mazda 3 keyfobs.
A word of warning Certain keys need to be programmed by a locksmith professional or dealer, while other keys do not. Make sure to use genuine Mazda replacements for your key fob.
How to add an extra key
You can also add another key in the event that you don't have a spare key available or if you accidentally break the one you have. You'll need to use an flat-head screwdriver and a new CR2025 battery. Once you've got these items and tools, you're ready to open the key fob. Find the auxiliary key release. The button is located beneath the metal portion. It's easy to locate. The back cover should come off as soon as you press the button. Then, you can insert the screwdriver's head into the notch, or the spacing on the top of the metal part and then pull it off.
Once the auxiliary key is removed, insert the new or spare key into the slot. Turn on the ignition and then wait for around five seconds, then turn it to OFF. This will add the new key's information to the system which will allow it to start your vehicle in the future.
It is important to remember that you can only program up to three keys for your Mazda 3. You don't want to have to use more than two keys to start your car. This is a safety measure to stop unauthorized users from activating your keys and launching your car.
How do I reprogram a spare key?
If you have a spare key, it's a good idea know how to program it in the event your original key gets stolen or lost. This will prevent unauthorized people from opening your car or stealing it. This procedure should work with any Mazda, though you'll need two keys working to begin the reprogramming. If you don't own two working keys then it's best to bring your Mazda to a dealer to get this done.
Start by stepping into the driver's seat, close all the doors, except the one that is open. Set the ignition to ON and insert the first working key. For five seconds, remove the key and repeat the procedure with the second key.
After you've completed programming your new key, you should have three working keys that you can use to start your car in the future. Before mazda car key battery store each key, make sure it's working properly.
It is advisable to purchase an extra Mazda 3 remote, especially in the event that your vehicle is prone to issues. You can purchase one online or in your local automotive store. Be sure to look up reviews before you purchase so that you don't get one that's not compatible with your vehicle.
How do you change the battery with a spare key?
It's a nightmare to discover that your key fob has died and you're in a position to not unlock your car. It's easy to change the battery yourself and save money at the dealership.
The first step is to press the auxiliary key button located on the back of the key fob. This will remove the key's metal cover and reveal the slots on both sides of the case. The flathead should be inserted into one of these slots, and then gently push the two halves of the case apart. After the battery is fully exposed, remove the case and put it somewhere that you will not forget about it.
Before you start, make sure that you have a new replacement battery. They can be found in any store that sells batteries or at a Mazda dealer close to Winter Garden. The correct type of battery is essential to ensure that your key fob functions correctly.
Replace the cap on the battery and then replace the battery. Be careful not to scratch the small rubber ring the battery rests on. Then, press the two parts of the key fob together until you hear a click.
How do you reset the Keyless Entry System
The key fob inside your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lose your key, or have it stolen the car will not start even if it has the spare key fob. The key fob should be reset by the dealer to allow it to work again. It can be a costly and stressful experience and 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 power from the on-board computer. Then, disconnect the LF -ECU and demand switch connectors. Check for continuity between the terminals.
Put the key in the slot and switch the ignition on. Keep the key in place for about five seconds, then switch it off. The key's details will be transferred to your vehicle's computer, and the new fob will be able start your vehicle in the future. You can program as many fobs you would like but only one can be utilized at any given time. This will prevent unauthorised people from stealing your key and gaining access to your vehicle. You can purchase a replacement keyfob online, but it'll still need to be cut and programmed by an authorized dealer.