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

It's a good idea always to keep an extra key in your pocket, whether you dropped your keyfob, or it has stopped working. This article will provide everything you need to learn about adding, changing, and changing the programming of your mazda cx 5 keys locked in car (our homepage) 3 key fobs.

A word of caution Certain keys require programming by a locksmith professional or dealer, whereas other keys don't. Make sure to use genuine mazda 5 replacement key cost replacements for your key fob.

How to add an additional key

You can also add a second key if you don't have a spare key, or if you accidentally damage the one you have. To accomplish this, you'll need an inexpensive flathead screwdriver as well as a new CR2025 battery. Once you have the items, it is time to open the key fob. Find the auxiliary key release. It's located underneath the metal part and is easy to find. When you press the button, the back cover will fall off instantly. Then, insert the screwdriver's head into the notch or space on the top of the metal component and pry it off.

After the auxiliary keys are removed, insert the new or spare key into the slot. Turn the ignition on and wait for about five seconds before turning it to OFF. This will add the new key's information to the system and allow it to start your vehicle in the future.

It's important to note that you can only program up to three keys on your Mazda 3. The final thing you want is to have more than two working key fobs and not be in a position to get your vehicle started. This is a precautionary measure to stop unauthorised users from activating your key fobs and starting your vehicle.

How do I reprogram a spare key?

If you have a spare key it's a good idea to be aware of how to reprogram it in the event that your original key gets lost or stolen. This will keep unauthorized people from getting into your car key mazda and causing damage to it. This will work with any mazda keyless entry remote. You'll need two keys that are functioning for the reprogramming to begin. If you don't own two working keys then it's best to bring your Mazda to the dealer to get this done.

Start by stepping into the driver's position, and shutting all doors, with the exception of the one that is open. Set the ignition to ON and insert the first functioning key. After five seconds, take the key out and repeat the process with the second working key.

After you've programmed your new key, you'll have three keys that work to start your vehicle in the future. Before placing each key in storage, make sure it's functioning correctly.

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

How to change the Battery on a Spare Key

There's nothing more frustrating than discovering that the battery in your key fob has died and you can't unlock your vehicle. It's easy to change the battery yourself and save money at the dealership.

Press the auxiliary key button on the back of the keyfob. This will release the metal key auxiliary and reveal a slot on both sides of the case. Press the flathead into one of these slots, and then gently pull the two halves of the case apart. When the battery is completely exposed, take it out and place the case somewhere safe from being lost.

Make sure you have an extra battery in place prior to starting. They can be bought at any retailer that sells batteries or from a Mazda dealer in Winter Garden. Using the right type of battery will ensure that your key fob functions perfectly.

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

How to reset the system's Keyless Entry System

The key fob in your Mazda 3 is not only an added convenience, but it's also an important security feature. The car will not start if your key is stolen or lost even if you have a spare key fob. The key fob should be reprogrammed by a dealer to allow it to work again. This can be a costly and frustrating ordeal therefore it's a great idea to know how to reset the system yourself.

Remove the battery from the system for 15 minutes. This will erase any residual electrical power in the on-board computer. Next, disconnect both the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.

Place the key in the slot, then switch on the ignition. Put the key in for about five seconds and then turn off. The key's information is transferred to the computer of your vehicle and the new fob is able to start your car. You can program up to three fobs, but you should only use one at each time. This will prevent unauthorized persons from copying the key and getting ahold of your vehicle. You can purchase a new key fob online, but you'll need to visit an expert locksmith or dealer to cut it and get it programmed.