It's a good idea always to have an extra key on hand, whether you dropped the keyfob you were using or it was unable to function. This article will explain everything you must be aware of changing, adding, and changing the programming of your mazda new key 3 key fobs.
A word of caution Certain keys need to be programmed by a professional locksmith or dealer, whereas other keys don't. Only use genuine Mazda Key Cut replacements to replace your key fob.
How to Add a Spare Key
If you're not fortunate enough to find a spare key from the dealer when you buy your Mazda 3 or accidentally break the one you have, don't worry -- there is still an option to get another key. You'll need to use a flathead screwdriver, and the CR2025 replacement battery. Once you have these items, it's time to access the key fob and swap the battery. First find the auxiliary key release button. The button is on the underside the metal part. It's easy to locate. The back cover should slide off as soon as you press the button. Then, insert the head of the screwdriver into the notch or the space on the top of the metal part and pry it off.
Once the auxiliary key is removed, insert your new or spare key into the slot. Set the ignition to ON, and wait for about five seconds before setting it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.
You can only program three keys into your Mazda 3. The most important thing is to have more than two working key fobs but not be capable of getting your vehicle started. This is a safety measure designed to stop 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 best to know how to program it in the event your original key is lost or stolen. This will keep unauthorized people from getting into your car and causing damage to it. This procedure should work with any Mazda but you'll need two working keys to start the reprogramming. If you don't have two keys that work then it's best to bring your car to a dealer to have this done.
Begin by stepping into your driver's seat, and closing the door, except for the one that's opened. Place the working key in the slot, and then turn the ignition to ON. Wait five seconds, then remove the key and repeat the process with a second working key.
After you finish programming your new key you should have three keys that will work to start your car in the future. Before storing each key, make sure that it's functioning properly.
It is advisable to purchase a spare Mazda 3 remote, especially if your car is prone to problems. You can purchase one on the internet or at your local auto store. Make sure to look up reviews before you purchase to ensure that you don't get one that's not compatible with your vehicle.
How do you change the battery with a spare key?
There's nothing worse than discovering that the battery on your key fob died and you can't unlock your car. Luckily, it's easy to replace the battery and save some money at the dealership.
The first step is to press the auxiliary key button on the back of the key fob. This will remove the metal key that is used as an auxiliary key, and expose an opening on both sides of the case. The flathead should be inserted into one of these slots, and then gently pry the two halves apart. Once the battery is fully exposed, remove it and place the case somewhere safe from being lost.
Before you begin, be sure you have a brand new replacement battery. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. Choosing the correct battery will ensure that your key fob operates properly.
Replace the cap on the battery, and then install the new battery. Be careful not damage the rubber ring on which the battery rests. Finally, press the two halves of the key fob together until you hear a click.
How do I reset a Keyless Entry System
The mazda replacement key 3 key fob is not just a piece of equipment for convenience. It also serves as an element of security. The car will not start if the key is lost or stolen, even if you've got a spare key fob. This is because the key fob needs to be reset at the dealership in order to work again. It can be a costly and time-consuming process It's a good idea to learn how to reset the system yourself.
Remove the battery from the system for 15 minutes. This will eliminate any remaining electrical current from the computer on board. Next, disconnect both the LF-ECU connector and the demand switch connectors. Check continuity between the following terminals.
To program a new key, or a spare, place it in the slot and turn the ignition to ON. Turn off the ignition after approximately five minutes. The key's details will be added 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 want however only one should be used at a particular time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a new keyfob on the internet, but it still needs to be programmed and cut by a dealer.