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

Whether you dropped your key fob on the ground or Car key Fob replacement it stopped working, it's an excellent idea to keep an extra key available. This article will show you how to add, change or reprogramme your Mazda 3 keyfobs.

A word of caution Certain keys require programming by a professional locksmith or dealer, whereas others do not. Use only authentic Mazda replacements to replace your key fob.

How to add a spare key

If you're not lucky enough to find a spare key from the dealer when you buy your Mazda 3 or accidentally break your current one do not fret -- there's still the option of adding another key. To accomplish this, you'll need a small flathead screwdriver and a new CR2025 battery. Once you have these items, it's time to open the key fob and replace the battery. First find the button that allows you to release the key. It's located on the underside the metal part. It's easy to find. The back cover should slide off as soon as you press the button. Then, place the screwdriver head into the notch at the top or the space and pull the metal piece off.

Insert the spare or new key into the slot after removing the auxiliary 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 and allow it to start your car in the future.

It's important to keep in mind that you can only program up to three keys on your Mazda 3. You don't want to use more than two key fobs to start your vehicle. This is a security measure to stop unauthorized users from activating your keys and launching your car.

How do you reprogram a spare key?

It's a good idea to know how to reprogram an extra key in the event that your original key becomes lost or stolen. This will keep unauthorized people from getting into your car and causing damage to it. This will work with any Mazda. You will require two keys that work for the reprogramming to begin. If you don't have two keys that work it's recommended to take your Mazda to the dealer to get this done.

Begin by putting yourself in the driver's seat, and close the door, with the exception for the one that's been opened. Place the first working key into the slot, then turn the ignition to ON. After five seconds, remove the key and repeat the process with the second key.

After you finish programming your new key you should have three keys that start your car in the near future. Test each key to ensure sure that they're operating correctly before placing them away.

It's a good idea to purchase an extra Mazda 3 key fob, especially if you're someone who has a tendency to lose their keys or has other issues with it. You can find one online or at your local automobile store, but be sure to read the reviews before purchasing so that you aren't purchasing a key fob that's not compatible with your car.

How do you change the battery on a spare key?

There's nothing worse than finding that the battery on your key fob gone out and you're not able to unlock your vehicle. It's not a problem to replace mazda key fob the battery and save yourself some money at the dealer.

The first step is to press the auxiliary key button located on the back of the key fob. This will take out the metal auxiliary key and expose slots on both sides of the case. Insert the flathead screwdriver into one of these slots. Then, gently remove the two parts of the case. Once the battery has been fully exposed, remove the case and put it in a spot where you'll never forget about it.

Be sure to bring an additional battery prior to beginning. You can purchase them in any store that sells batteries or at an Mazda dealer near Winter Garden. The correct battery is essential to ensure that your keyfob is working correctly.

Then, put the new battery in its place and then replace the cap of the battery. Be careful not to damage the small rubber ring that the battery rests on. Press the two halves together until you hear the click.

How to Reset the system's Keyless Entry System

The key fob inside your Mazda 3 is not only an option for convenience, it's an important security feature. If you lose your key or had it stolen the car key fob Replacement won't start, even if you have the spare key fob. The key fob has to be reprogrammed by the dealer to enable it to function again. It can be a stressful and costly experience. So, it's best to learn how you can reset the system.

Disconnect the battery from the system for 15 minutes. This will clear any residual electricity from the on-board computer. Then, disconnect both the LF-ECU and demand switch connectors. Check continuity between the following terminals.

Insert the key into the slot, and turn the ignition ON. Leave the key in for around five seconds, and then switch it off. The key's information is added to the vehicle's computer and the new fob will start your vehicle. You can program any number of fobs you desire however only one should be in use at any certain time. This will stop unauthorized individuals from stealing your key and getting access to your vehicle. You can purchase a new key fob online, but you'll still need to go to a dealer or locksmith to get it cut and programmed.