How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the floor or it stopped working, it's recommended to keep an extra key in your pocket. This article will cover everything you should be aware of when adding, changing, or programming your Mazda 3 key fobs.
A word of warning Certain keys need to be programmed by a locksmith professional or dealer, while other keys do not. Use only official Mazda replacements to replace your key fob.
How to add a spare key
You can add another key in the event that you don't have a spare key available or in the event that you break the one you already have. You'll need to use a flathead screwdriver and a CR2025 new battery. Once you've got these items then it's time to open the key fob. Find the auxiliary key release. The button is located on the bottom of the metal portion. It's easy to locate. When you press the button, the back cover should slide off immediately. Then, insert the head of the screwdriver into the notch, or the spacing on the top of the metal part and pry it off.
Once the auxiliary key is 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 begin your vehicle in the future.
It's important to note that you can only program up to three keys for your Mazda 3. The last thing you want is to have more than two working key fobs and not be able to get your car started. This is a security precaution designed to prevent unauthorized users, like valet drivers from activating your key and starting your vehicle.
How to reprogram a spare key?
If you have a spare key, it's a good idea to know how to program it if your original key gets lost or stolen. This will stop unauthorised people from getting into your car and causing damage to it. This should work with any Mazda. You'll require two keys that are functioning to start the reprogramming process. If you don't have two functioning keys, you'll need to take your vehicle to a dealer to get it done.
Start by stepping into the driver's seat and closing all the doors except the one that is open. Turn the ignition on and insert the first working key. For five seconds, remove the key and repeat the procedure with the second key.
Once you've programmed your new key, you'll have three keys that you can use to start your vehicle in the future. Before placing each key in storage, make sure that it's functioning properly.
You should consider buying a spare Mazda 3 remote, especially in the event that your vehicle is prone to problems. You can buy one online or at a local automotive store. Be sure to read reviews before purchasing to ensure that you don't get one that's not compatible with your vehicle.
How to change the Battery on a Spare Key
It's awful to discover that your key fob is dead and you're not able to unlock your car. Luckily, it's easy to replace the battery and save some cash at the dealership.
The first step is to press the auxiliary key button that is located on the back of the key fob. This will take out the metal key that is used as an auxiliary key, and expose an opening on both sides of the case. Insert the flathead screwdriver into one of these slots and gently remove the two halves of the case. Once the battery is fully exposed, take it out of the case and put it in a spot where you'll never forget about it.
Make sure you have a replacement battery prior to starting. They can be found at any store that sells batteries or at a Mazda dealer close to Winter Garden. Using the correct type of battery will ensure that your key fob functions properly.
Next, put the new battery in the correct place and replace the cap of the battery. Be careful not damage the rubber ring that holds the battery. Press the two halves together until you can hear the click.
How can I reset the Keyless Entry System
The key fob inside your Mazda 3 is not only an extra convenience, but 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 reset at the dealership to function properly. mazda key fobs can be a costly and time-consuming process therefore it's a great idea to know how to reset the system yourself.
To reset the system, remove the battery for about 15 minutes. This will clear any residual power from the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.
Place the key into the slot, then switch the ignition on. Turn off the ignition after approximately five minutes. The key's details are now stored in the car's computer and the new fob can start your vehicle. You can program as many fobs you want however only one should be used at any certain time. This stops unauthorized individuals from copying the key and gaining access to your vehicle. You can buy a new keyfob from the internet, however it must be cut and programmed by a dealer.