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

It's a good idea always to keep a spare key on hand no matter if you've dropped the keyfob you were using or it stopped working. This article will teach you how to add, modify and re-programme your mazda 3 lost key 3 keyfobs.

A word of warning: some keys require programming by a locksmith professional or dealer, whereas other keys do not. Make sure you only use official Mazda replacements for your key fob.

How to add a spare key

You can add an additional key if you don't have a spare mazda key key or if you accidentally break the one you have. You'll need to use a flathead screwdriver, and a CR2025 new battery. Once you have the items then it's time to open the key fob. Locate the key release auxiliary. It's located on the bottom of the metal part. It's easy to locate. When you press the button, the back cover will fall off instantly. Next, insert the screwdriver's head into the notch or spacing at the top of the metal piece and pry it off.

After the auxiliary keys are removed, insert your new or spare key into the slot. Set the ignition to ON and wait for around five seconds before turning it to OFF. This will register the new key's details to the system, allowing it to start your car in the future.

You can only program three keys on your mazda 3 replacement key cost 3. The one thing you don't want is to have more than two working key fobs and not be in a position to get your vehicle started. This is a security precaution designed to prevent unauthorised users, like valet drivers who are not authorized to use your key and starting your car.

How do I reprogram a spare key

It's a smart idea to know how to reprogram a spare key in the event that your original key becomes lost mazda 3 key fob or stolen. This will prevent unauthorized people from starting your vehicle or taking it. This process should work on any Mazda but you'll need two keys that work to begin the reprogramming. If you don't own two working keys, you'll need to bring your car to the dealership to have it done.

Begin by stepping into your driver's seat, and closing the door, except for the one that's opened. Turn the ignition on and insert the first working key. Wait five seconds, then remove the key and repeat the procedure with the second working key.

Once you've finished programming your new key, you'll have three working keys you can use to start your car in the future. Check each key to make sure that they're operating correctly before throwing them away.

It's a good idea purchase a spare 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 buy one online or at a local automotive store, but make sure to read reviews prior to purchasing so you aren't buying a key fob that's not compatible with your car.

How do I change the battery on a spare Key

There's nothing more frustrating than finding that the battery for your key fob has died and you can't unlock your vehicle. Fortunately, it's easy to replace the battery and save some money at the dealer.

Press the auxiliary key button on the back of the keyfob. This will remove the metal 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 push the two halves apart. When the battery is completely exposed, take it out and set aside the case somewhere you won't forget it.

Be sure to have an additional battery prior to beginning. These batteries can be purchased at any retailer that sells batteries or from a Mazda dealer in Winter Garden. The correct type of battery is crucial to make sure that your keyfob functions correctly.

Then, put the new battery in place and replace the cap of the battery. Be careful not damage the rubber ring that holds the battery. Finally, press the two parts of the key fob together until you hear a click.

How to Reset the Keyless Entry System

The mazda Key car 3 key fob is not just a practical feature. It's also an important security feature. If you lose your key, or have it stolen the car won't start even if it has the spare key fob. This is because the key fob needs to be reset at the dealership in order to function properly. It's a difficult and costly ordeal. Therefore, it's advisable to learn how to reset the system.

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

Insert the key into the slot and switch the ignition on. Turn off the ignition after about five seconds. The information from the key will be added to your vehicle's computer and the new fob will be able to start your vehicle in the future. You can program up to three fobs however, you should only use one at a time. This will prevent unauthorized persons from copying your key and getting ahold of your car. You can purchase a replacement mazda 3 key keyfob online, however it must be cut and programmed by an authorized dealer.