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 recommended to keep a spare key handy. This article will teach you how to add, alter or reprogramme the mazda cx 5 keyless entry 3 keyfobs.

A word of warning Certain keys need to be programmed by a professional locksmith or dealer, while other keys do not. Only use authentic Mazda 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 dealership when you buy your Mazda Key Programming Cost 3 or accidentally break your current key, don't worry -- there's still the option of adding another key. To accomplish this, you'll need a small flathead screwdriver and an CR2025 battery that's new. Once you've got these items then it's time to access the key fob and swap the battery. First, locate the auxiliary key release button. It's located on the underside of the metal part and is easy to locate. The cover on the back should fall off as soon as you press the button. Then, insert the screwdriver's head into the notch at the top or in the space, and pry the metal part off.

Once the auxiliary key is removed, insert your new or spare key into the slot. Turn on the ignition and wait for about five seconds, then turn it to OFF. This will allow the system to recognize the new key and start your vehicle in the future.

It is important to remember that you can only program up to three keys for your Mazda 3. You don't want to have to use more than two keys to start your car. This is a safety measure designed to prevent unauthorized users, like valet drivers who are not authorized to use your key and starting your car.

How to reprogram a spare key?

If you have a spare key it's best to know how to reprogram it in case the original key you had is stolen or lost. This will stop unauthorised people from opening your car or taking it. This will work with any Mazda. You will need two keys that are working to begin the reprogramming process. If you don't own two working keys, you'll have to bring your car to the dealership to get it done.

Begin by getting in your driver's seat, and closing the door, except for the one that's open. Insert the first working key in the slot, and then turn the ignition to the ON position. Wait for five seconds, then take the key out and repeat the process with a second working key.

Once you've finished programming your new key, you should have three working keys that you can use to start your car in the future. Before storing each key, make sure it's functioning correctly.

You should think about purchasing an extra Mazda 3 remote, especially when your car is susceptible to problems. You can purchase one online or in your local auto store. Be sure to look up reviews before you purchase to ensure that you don't purchase a key fob which isn't compatible with your car.

How to Change the Battery on a spare key

There's nothing worse than discovering that the battery for your key fob has been damaged and you're unable to unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.

Press the auxiliary key button on the back of the keyfob. This will take out the key made of metal and reveal two slots on the opposite side of the case. The flathead should be inserted into one of these slots, and gently pry the two halves of the case apart. When the battery is completely exposed, remove it and place the case somewhere safe from being lost.

Be sure to have a replacement mazda 3 key battery prior to starting. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. The right type of battery is crucial to make sure that your keyfob functions correctly.

Then, place the new battery in place and replace the cap on the battery. Be careful not to damage the rubber ring that holds the battery. Press the two halves together until you can hear the click.

How do I reset the system's Keyless Entry System

The Mazda 3 key fob is not just a convenient feature. It's also an element of security. If you lost your key or had it stolen the car won't start even if you've got the spare key fob. The key fob needs to be reset by the dealer to enable it to function again. This could be a costly and frustrating experience therefore it's a great idea to know how to reset the system yourself.

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

Insert the key into the slot, and switch on the ignition. Turn off the ignition after about five seconds. The key's information is transferred to the computer of your vehicle and the new fob can start your vehicle. You can program as many fobs you would like, but only one should be used at a given time. This prevents unauthorized people from copying the key and getting ahold of your vehicle. You can purchase a new key fob online, however you'll still need to go to an authorized locksmith or dealer to get it cut and programmed.