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Mazda 2 Key Fob Replacement Although it can be a hassle when a device stops working, it's common and can be easily repaired. In most cases, it's a a matter of replacing the battery. Batteries are available at most big-box retailers and hardware stores. You can also check your owner's manual or on YouTube for directions on how to open the fob and replace the battery. What is a keyless system? The keyless entry feature in your car is a remote-control system that allows you lock and unlock the vehicle without the need to insert your keys. The keyless entry system is usually mounted on a keyfob integrated into the ignition key handle. Some models also offer the option of remotely locking the trunk and tailgate. The system transmits a radio signal to the computer in your car. The car will then analyze the signal to determine whether it is the correct key. If it's the correct one then the doors will be opened automatically and the engine will begin. The key fob also contains a transponder or integrated security chip that prevents the vehicle from starting if a faulty key is used. While keyless entry systems are convenient, they do have a few drawbacks. Children can accidentally activate them through playing with them, or they may be turned on when the owner isn't in the vehicle. This could cause the power windows and other features to operate without the owner's knowledge or permission, and it may even set off the car alarm. Another reason to be concerned is that there are a multitude of ways for thieves to breach the security of keyless entry systems, and then hack the computer of your vehicle to make it think your key fob is near enough to allow you to start your car. new mazda key fob is therefore crucial to ensure that you have a spare working key or fob. How do I replace my keyless access device? If the battery in your car's key fob dies while you're on the moving, it can be a huge inconvenience. Luckily, changing a Mazda 2 transponder flip key's battery is quite simple. You will need to know the best method to open the key fob, as well as what type of battery you should buy. You'll need to use an flathead screwdriver wrapped in tape to pry open the case, starting from one side, then the other side, working slowly to avoid damaging it. Once the case has been opened, remove the old battery. Put the case where so that it is not forgotten. Replace the new battery, ensuring to align it so that the positive side is facing towards the upwards. It's also a good idea to write down the code number on the back of your manual key in order to program the replacement fob with it. Be aware that although you can copy the old metal car keys at hardware stores of the most recent smart keys require programming by an expert locksmith or dealer. The cost of purchasing a new fob, program, and mechanical backup keys can be expensive. Check your warranty on your car or auto club membership or insurance policy to determine if they will cover the cost. You may be able to save money by purchasing an aftermarket fob online and having it programmed by a locksmith, rather than the dealership. How do I program my keyless entry system? Generally, the same steps can be used to program a key fob on most major automobile models. However, the procedure for certain vehicles might differ and might require special hardware or software. In these instances you must consult the manual or contact an authorized dealer for assistance. Make sure you have all the equipment and materials you need before starting. It is recommended that you read the manual for the keyless system to better understand how it works. The installation process is fairly straightforward, but you will need to take off the cover for the steering wheel to gain access to the wires that are required for connection. Wrapping the wires in electrical tape will protect and protect them from damage. To program a key fob in a new vehicle, simply insert the ignition key that was originally used and turn it on the “ON” setting (not the “start” or “run”) While the key is in the ignition then simultaneously press and hold both the unlock and lock button on the new remote for at least 30 minutes. If done correctly, your vehicle will sound a chime, and the programming process will be successful. After successfully programming the new key fob, switch the ignition back to the “OFF” position and test all of the buttons to ensure they work correctly. How do I replace the battery in my keyless entry system? Every few years or when your key fob becomes less responsive, you'll have to replace the batteries on your key fob. This task can be accomplished in less than 10 seconds. Most of the time you don't need to reprogram your key fob after replacing the battery. It is essential to have the right battery in your inventory. If you flip the key fob over it, you should see the name of the battery on it. If it is illegible, you can use a small flat-head screw driver to unlock the key fob to look inside. Key fobs generally accept CR-1620 batteries that are readily accessible at a variety of stores including Home Depot, Walmart, & AutoZone. You can easily access the key fob after taking out the mechanical key. Use a screwdriver that is flat or your fingernail in order to do this. Replace the battery you used with the one that you purchased. Make sure that the new battery has its positive (+) side facing up and then reassemble both sides of the key fob, and snap them to seal it. Some key fobs need programming. This can be done using a specific tool that is only available to automotive locksmiths or dealers. Non-transponder keys do not require programming, therefore they can be a viable option for those who do not have the equipment to program their vehicle.