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

It's a good idea always to have an extra key at hand no matter if you've dropped your keyfob or it stopped working. This article will tell you how to add, alter or reprogramme the Mazda 3 keyfobs.

Note: Some keys require programming from a professional locksmith, while others don't. Make sure to use genuine Mazda replacements for your key fob.

How do I add a spare key?

You can add a second key if you don't have a spare key available or if you accidentally break your existing one. You'll need an flat-head screwdriver and an CR2025 battery. Once you've got the tools then it's time to open the key fob and replace the battery. Locate the key release auxiliary. It's located on the underside of the metal component and is easy to find. The cover that covers the back should come off as soon as you press the button. Next, place the screwdriver's head into the notch, or the spacing at the top of the metal component and pull it off.

Insert the spare or new key into the slot following the removal of the additional key. Switch the ignition on and wait for five seconds, and then turn it to OFF. This will allow the system to recognize the new key and begin your vehicle in the future.

It's important to know that you can only program up to three keys on your 2006 mazda 6 key fob 3. The last thing you want is to have more than two working key fobs but not be capable of getting your vehicle started. This is a safeguard to stop unauthorised users from activating your key fobs and starting your car.

How to Reprogram a Spare Key

If you have a spare key it's a good idea be aware of how to program it in the event your original key gets stolen or lost. This will keep unauthorized people from abusing your vehicle and re-starting it. This should work with any mazda cx 5 key. You'll need two keys that are functioning to begin the reprogramming. If you don't have the two working keys, you'll need bring your vehicle to the dealership to complete the process.

Begin by getting in your driver's seat, and closing the door, except for the one that's open. Set the ignition to ON and insert the first working key. Wait five seconds before removing the key. Repeat with the second key.

Once you've completed programming your new key you should have three keys that will allow you to start your vehicle in the future. Check each key to make sure that they're functioning properly before putting them away.

It's a good idea to buy an extra Mazda 3 key fob, particularly if you're a driver who has a tendency to lose their keys or has other issues with it. It's possible to find one on the internet or at your local automobile store, but make sure to read reviews before buying so you can avoid purchasing a key fob that's not 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 gone out and you're not able to unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.

The first step is to press the auxiliary key button on the back of the key fob. This will release the metal auxiliary key and expose 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. Once the battery is fully exposed, take it out and set aside the case somewhere you won't forget it.

Before you begin, make sure you have a new replacement battery. They can be bought from any store that sells batteries or from a Mazda dealer in Winter Garden. Choosing the right battery will ensure that your key fob operates correctly.

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

How to reset a Keyless Entry System

The key fob on your mazda key card 3 is not only a convenience, it's also an important security feature. If you lose your key or have it stolen, the car will not start even if it has the spare key fob. This is because the key fob needs to be reprogrammed by the dealership to work properly. This can be a costly and frustrating ordeal, so it's a good idea to learn how to reset the system yourself.

To reset the system, unplug the battery for approximately 15 minutes. This will remove any residual electrical power in the on-board computer. The next step is to disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:

Insert the key into the slot, then turn on the ignition. Switch off the ignition after about five minutes. The key's information will be added to your vehicle's computer and the new fob will be able start your vehicle in the future. You can program up to three fobs, however, you should only use one at one time. This will prevent unauthorised people from stealing your keys and getting access to your car. You can purchase a brand new key fob on the internet, but you'll still have to visit an authorized locksmith or dealer to have it cut and programmed.