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Mazda 2 Key Fob Replacement Although it can be a bit frustrating to see a device stop functioning, it's quite frequent and easily repaired. Usually, it is just replacement of the battery. You can find replacement batteries at most hardware stores and big-box retailers. You can also look in the 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 system that you have in your car is a remote control system that lets you to lock and unlock the vehicle without the need to insert your keys. The keyless entry system can be installed on a keyfob, or integrated into the ignition key handle. Some models offer the option to remotely lock the trunk and tailgate. The system operates by transmitting a radio signal from your key fob to the car's computer. The car reads the radio signal to determine if the key is the right key. If it is then the doors will unlock and the engine will be started. The key fob also contains an integrated security chip, or transponder, which prevents the car from starting when the incorrect key is used. While keyless entry systems are convenient, they do have some drawbacks. They may be activated accidentally by children playing with them or turned on even when the owner isn't in the vehicle. www.g28carkeys.co.uk can cause the power windows and other features to operate without the owner's knowledge or permission and could even trigger the alarm in the car. Another issue is that there are a number of ways that thieves could breach the security of keyless entry systems and hacked into the computer in your vehicle to make it believe your key fob is close enough to start the car. It is therefore important to make sure that you have a spare working fob or key. How do I replace my keyless entry system? If your car's key fob battery dies while you're on the road, it could be a major hassle. Fortunately, changing the Mazda 2 transponder flip key's battery is pretty simple. You will have to know the right way to open the key fob and which type of battery should purchase. Make use of a tape-wrapped screwdriver gently pry the case open and work from one side to the other. Be careful not to break it. Once the case has been removed, you can remove the old battery. Place the case somewhere so that you don't forget it. Replace the battery, orienting it to ensure that its positive face is facing up. It's recommended to note down the code number on the back of your manual key to allow you to program the replacement fob by using it. While you can duplicate a key made of metal in a hardware store, most of the modern smart keys require programming by a locksmith or dealer. The cost of buying a new fob, programming, and a mechanical backup key can add up. If you have an auto club membership or insurance policy, check to see if it's enough to cover the cost. You may be able save money by purchasing an aftermarket key fob on the internet, and then having it programmed instead by a locksmith. How do I program a keyless entry system to my home? In general the same steps are used to program key fobs for most major auto brands. However, the process for certain vehicles might be a bit different and may require specialized hardware or software. In such cases, it would be best to read the manual, or seek out an authorized dealer for more assistance. Be sure to have the equipment and materials you need before starting. It is recommended that you study the manual for the keyless system to understand how it works. Installation is fairly simple however, you'll need to remove the cover of your steering wheel in order to access the wires needed for the connection. Wrapping the wires with electrical tape will shield and shield them. To program the new key fob, insert the original key into the ignition and then turn it to the “ON” position (not the run or start position). While the key is in the ignition while you hold and press both the unlock and lock button on your new remote for at least 30 seconds. If you've successfully completed the process your vehicle will sound. The process of programming is also successful. After successfully programming a new key fob, return the ignition to the “OFF” position and test all of the buttons to make sure they function properly. How do I change the battery on my keyless entry system? Every few years or when the key fob appears to become less responsive, you'll need to replace the batteries in your key fob. This is an easy task that can be completed in just 10 seconds. Most of the time you don't have to change the key fob's programming after replacing the battery. In the beginning, you'll want ensure you have the proper type of battery in stock. If you flip the key fob over it, you should see the battery's name written on it. If it's not then you can utilize a small flat screw driver to unlock the key fob to look inside. Most key fobs accept batteries CR-1620 that are available at numerous stores including Home Depot, Walmart, & AutoZone. Once you have removed the mechanical key from the key fob, you can easily open it using the help of a screw driver with a flat head or your fingernail. Replace the battery you used with the one you purchased. Make sure that the new battery has its positive (+) side facing up, then reassemble the two sides of the key fob, and snap it shut. Certain key fobs require programming. This can only be accomplished using a specific tool that is only accessible to dealers or automotive locksmiths. However, non-transponder keys don't require to be programmed, making them a great choice for those who don't have tools needed to program their vehicle.