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How to Add, Change, and Reprogram a Mazda 3 Spare Key
It's a good idea to have an extra key at hand no matter if you've dropped your keyfob or it was unable to function. This article will tell you how to add, modify or reprogramme your Mazda 3 keyfobs.
A word of warning Certain keys need to be programmed by a locksmith professional or dealer, whereas others do not. Be sure to only make use of official Mazda replacements for your key fob.
How do I add a spare key
If you're not fortunate enough to find a spare key from the dealer when you purchase your Mazda 3 or accidentally break your current one but don't worry, there is still the option of adding another key. To accomplish this, you'll require an inexpensive flathead screwdriver as well as a new CR2025 battery. Once you've got the tools you can remove the key fob and change the battery. Find the key release auxiliary. It's located on the underside of the metal part. It's easy to find. The cover on the back should fall off when you press the button. Next, insert the screwdriver's head into the notch or space at the top of the metal piece and pry it off.
Once the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition ON and wait for five seconds before turning it to OFF. This will register the new key's details to the system which will allow it to start your vehicle in the future.
It is important to remember 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 car. This is a safety precaution designed to stop unauthorized users, like valet drivers, from activating your key and thereby launching your vehicle.
How to reprogram a spare key
It's a smart idea to learn how you can reprogram an extra key in the event that your original key is lost or stolen. This will stop unauthorised people from abusing your vehicle and re-starting it. This procedure should work with any Mazda, though you'll need two working keys to begin the process of reprogramming. If you don't have two functioning keys, you'll have to take your vehicle to the dealer to get it done.
Start by stepping into the driver's seat and shutting all doors, with the exception of the one that is open. Set the ignition to ON and then insert the first working key. Wait five seconds, then take the key out and repeat the procedure with the second working key.
After you've completed programming your new key, you'll have three working keys you can use to start your vehicle in the future. Before storing each key, make sure that it's working correctly.
It's a good idea purchase an extra Mazda 3 key fob, especially if your car is one who often loses your key or has other issues with it. You can purchase one online or at your local auto 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 do I change the battery on a spare key?
It's a nightmare to discover that your key fob has died, and you are in a position to not unlock your car. It's a good thing that it's simple to replace the battery and save yourself some money at the dealership.
Press the auxiliary button on the back of the keyfob. This will take out the metal key auxiliary to reveal two slots on the sides of the case. Press the flathead into one of these slots, and gently pry the two halves of the case apart. Once the battery is fully exposed, remove the case and put it in a place where you won't forget it.
Before you begin, be sure you have a brand new replacement battery. These batteries can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. The correct type of battery is vital to ensure that your keyfob works properly.
Next, put the replacement battery in its place and then replace the cap of the battery. Be careful not to damage the rubber ring on which the battery rests. Press the two halves together until you can hear the click.
How do I reset the Keyless Entry System
The key fob in your Mazda 3 is not only an extra convenience, but also an important security feature. If you lose your key or had it stolen the car won't start even if you have the spare fob. The key fob must be reprogrammed by the dealer to enable it to function again. It can be a frustrating and expensive ordeal. Therefore, it's recommended to learn how to reset the system.
Disconnect the battery from the system for 15 minutes. mazda 3 key fob replacement will erase any residual electrical current from the computer on board. The next step is to disconnect the LF-ECU and demand switch connectors. Check for continuity between the following terminals:
Place the key in the slot, and switch on the ignition. Put the key in for about five seconds, then turn it off. The key's details are now added to the vehicle's computer and the new fob can start your car. You can program as many fobs you would like but only one can be used at a particular time. This will prevent unauthorised people from stealing your keys and getting access to your vehicle. You can purchase a new key fob on the internet, but you'll still have to visit a dealer or locksmith to have it cut and programmed.
