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How to Add, Change, and Reprogram a Mazda 3 Spare Key

It's a good idea always to keep an extra key on hand no matter if you've dropped the keyfob or it was unable to function. This article will provide everything you should learn about adding, changing, or changing your Mazda 3 key fobs.

Be aware that some keys require programming by a professional locksmith, while others don't. Make sure you only use genuine mazda 2 car key replacements for your key fob.

How do I add an additional key

If you're not lucky enough to find a spare key from the dealership when you purchase your Mazda 3 or accidentally break your current key but don't worry, there's an option to get another key. You'll need a flathead screwdriver and the CR2025 replacement mazda 3 key battery. Once you have these items and are ready to open the key fob and change the battery. Locate the key release auxiliary. It's located on the underside of the metal part and is easy to locate. The back cover should come off when you press the button. Then, you can insert the screwdriver's head into the notch or space on the top of the metal piece and pry it off.

Insert your spare or new key into the slot following the removal of the additional key. Set the ignition to ON and wait for around five seconds before setting it to OFF. This will add the new key's details to the system, allowing it to start your car in the future.

It's important to keep in mind that you can only program up to three keys for your mazda cx 5 keyless entry 3. The one thing you don't want is to have more than two functioning key fobs and not be in a position to get your vehicle started. This is a safety precaution designed to prevent unauthorized users, like valet drivers from activating your key and thereby starting your car.

How to Reprogram a spare key

If you have a spare key it's a good idea to know how to program it if the original key you had is lost or stolen. This will keep unauthorized people from abusing your vehicle and re-starting it. This will work with any mazda car key replacement. You'll require two keys that work to begin the reprogramming process. If you don't have two functioning keys, you'll need bring your vehicle to the dealership to have it done.

Start by stepping into driver's seat, closing all the doors except the one that is open. Insert the first working key into the slot, then turn the ignition to the ON position. For five seconds, remove the key and repeat the process with the second key.

After you finish programming your new key, you should have 3 keys that will start your vehicle in the future. Test each key to ensure sure they're working correctly before throwing them away.

It is advisable to purchase a spare Mazda 3 remote, especially when your car is susceptible to problems. It's possible to find one on the internet or at your local auto store, but make sure to read the reviews before buying so you aren't buying one that's not compatible with your vehicle.

How to change the Battery on a spare key

There's nothing more frustrating than finding that the battery in your key fob has gone out and you're not able to unlock your vehicle. It's easy to replace the battery yourself and save money at the dealership.

Press the auxiliary key button located at the back of the keyfob. This will remove the metal key and reveal two slots on the opposite side of the case. Insert the flathead screwdriver into one of these slots. Then, gently break the two sides of the case. Once the battery is fully exposed, remove the case and place it somewhere you will not forget it.

Make sure you have an extra battery in place prior to starting. They are available at any store that stocks batteries or at a Mazda dealer close to Winter Garden. Choosing the correct battery will ensure that your key fob is working effectively.

Then, put the new battery in place and replace the cap of the battery. Be careful not to damage the small rubber ring that the battery rests on. Then, press the two parts of the key fob together until you hear the sound of clicking.

How to Reset a Keyless Entry System

The key fob that you have in your Mazda 3 is not only an option for convenience, it's an important security feature. 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 has to be reset at the dealership in order to work once more. This can be a painful and costly experience. Therefore, it's recommended to learn how you can reset the system.

To reset the system, remove the battery for 15 minutes. This will eliminate any remaining electricity from the on-board computer. The next step is to 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. Turn off the ignition after approximately five minutes. The key's information has been transferred to the computer of your vehicle and the new fob can start your car. You can program any number of fobs you would like, but only one should be utilized at any given time. This will prevent unauthorized persons from copying the key and gaining access to your vehicle. You can purchase a brand new key fob on the internet, but you'll still need to go to a locksmith or dealer in order to get it cut and programmed.