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How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it stopped working, it's an excellent idea to keep an extra key available. This article will teach you how to add, change, and reprogramme your Mazda 3 keyfobs.
Note: Some keys require programming by an experienced locksmith, whereas others don't. Only use official Mazda replacements to replace your key fob.
How to Add a Spare Key
You can add an additional key in case you don't have a spare key, or if you accidentally damage your existing one. You'll need to use the flathead screwdriver, as well as a new CR2025 battery. Once you've got these items you need, it's time to open the key fob. First look for the auxiliary key release button. The button is on the underside the metal part. It's easy to find. Once you press the button, the cover will fall off instantly. Then, insert the head of the screwdriver into the notch or space at the top of the metal component and pry it off.
Insert your spare or new key into the slot following the removal of the secondary key. Set the ignition ON and wait for about five seconds, then turn it to off. This will add the new information on the key to the system, allowing it to start your vehicle in the future.
It is only possible to program three keys to your Mazda 3. The most important thing is to have more than two functioning key fobs, and not be able to get your car started. This is a safeguard to stop anyone who is not authorized from activating your keys and then starting your car.
How to Reprogram a spare key
It's a smart idea learn how you can reprogram a spare key in the event that your original key is lost or stolen. This will stop unauthorised people from abusing your vehicle and re-starting it. This procedure should work with any Mazda, though you'll need two working keys to begin the reprogramming process. If you don't have two keys that function then it's best to bring your car to a dealer to get this done.
Begin by getting into your driver's seat, and close the door, except for the one that's been opened. Turn the ignition on and insert the initial working key. mazda 2 key fob replacement , then take the key out and repeat the process with the second key.
Once you've completed programming your new key, you should have three keys that start your car in the future. Before storing each key, make sure it's functioning correctly.
You should consider buying an extra Mazda 3 remote, especially if your car is prone to problems. You can purchase one online or at your local automobile store, but make sure to read reviews before purchasing so that you aren't purchasing the wrong key fob compatible with your vehicle.
How do I change the battery on a Spare Key
It's awful to discover that your key fob is dead, and you are unable to unlock your vehicle. Fortunately, it's easy to replace the battery and save some money at the dealership.
Press the auxiliary button on the back of the keyfob. This will release the metal key that is used as an auxiliary key, and expose slots on both sides of the case. Insert the flathead screwdriver into one of these slots and then gently remove the two parts of the case. After the battery is fully exposed, remove the case and place it somewhere you will not forget about it.
Before you start, make sure you have a new replacement battery. They can be bought at any store selling batteries or from a Mazda dealer in Winter Garden. The correct battery is crucial to ensure that your keyfob is working correctly.
Replace the cap on the battery, and then install the new battery. Be careful not to scratch the small rubber ring the battery is placed on. Then, press the two parts of the key fob together until you hear a click.
How do I reset the Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It also serves as an important security feature. If you lose your key or had it stolen the car will not start even if you have the spare fob. The key fob should be reprogrammed by the dealer to allow it to work again. It can be a frustrating and costly process. So, it's best to learn how you can reset the system.
To reset the system, disconnect the battery for 15 minutes. This will eliminate any remaining electric current from the onboard computer. Then, disconnect the LF-ECU connector and the demand switch connectors. Verify the continuity between the next terminals.
To program the new key or spare, place it in the slot and turn the ignition to ON. Switch off the ignition after approximately five seconds. The key's details will be added to the vehicle's computer, and the new fob will be able to start your car in the future. You can program up to three fobs, but you should only use one at a time. This stops unauthorized individuals from copying your key and gaining access to your car. You can purchase a new key fob online, however you'll still have to visit a locksmith or dealer in order to have it cut and programmed.