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Mazda 2 Key Fob Replacement While it is frustrating to see a device stop functioning, it's quite common and can be repaired. It is usually a simple matter of replacing the batteries. You can find replacement batteries at the majority of hardware stores and big-box retailers. You can also check the owner's manual or on YouTube for directions on how to open the fob and replace the battery. What is a keyless-entry system? The keyless entry system that you have in your car is a remote control system that lets you to lock and unlock your vehicle without the need to insert your keys. The keyless entry system is typically installed on a keyfob, or integrated into the ignition key handle. Certain models allow you to remotely secure the tailgate and trunk. The system transmits radio signals to the computer in your car. The car analyzes the radio signal to determine if the key is the correct key. If it's a valid key it will unlock the doors automatically, and the engine will begin. The key fob can also contain an embedded security chip that blocks the vehicle from starting if the wrong key is used. While keyless entry systems are convenient, they do have some disadvantages. They could be activated accidentally by children playing with them or turned on even when the owner isn't in the vehicle. This can cause the power windows and other features to operate without the knowledge or consent of the owner and could even trigger the car alarm. There are also a number ways for thieves to hack into the computer system of your vehicle to trick it into thinking that your fob's key was close enough to allow you to start your car. Therefore, it is important to ensure that you always have a spare working key or fob. How do I change my keyless entry system? It can be a major problem if your key fob battery fails while you're on the road. It's easy to replace the battery on the Mazda 2 flip key transponder. You will be required to know the proper method of opening the key fob, as well as which type of battery need to purchase. You'll need to use a flathead screwdriver that is tape wrapped to open the case. Begin with one side, then the other side, using it gently to avoid damaging it. Once the case is opened and the battery removed, you can take out the battery from the case and place the case somewhere where you'll never lose it. Replace the new battery, but be sure to place it in a way that the positive side faces upwards. You can also program the replacement fob by writing down the code on the back of the manual key. While you can duplicate a key made of metal at a hardware store most of the modern smart keys require programming by an expert locksmith or dealer. The cost of replacing a fob, a programming key and mechanical backup keys can be added to the total. If you have an auto club membership or insurance policy, make sure to see if it's enough to cover the cost. You might be able save money by purchasing an aftermarket fob online and having it programmed by a locksmith rather than the dealership. How do I set up a keyless entry system for my home? Generally speaking, the same procedure can be used to program a key fob for most major car models. However, the procedure for certain vehicles could be a little different and might require special hardware or software. In those cases it is recommended to read the manual or consult an authorized dealer for more assistance. Before you begin, ensure that you have all the required materials and tools. It is recommended that you go through the instruction manual for the keyless system to understand how it functions. Installation is simple but the cover for the steering wheel needs to be removed to expose the wires to connect. Once you have the wires in place, it is important to wrap them with electrical tape for protection and insulation. To program a key fob on the new vehicle, insert the ignition key that was originally used and turn it to the “ON” setting (not the “start” or “run”) When the key in the ignition is turned on simultaneously press and hold both the unlock and the lock button on your new remote for 30 minutes. If you've successfully completed the process your vehicle will sound. The programming process is also successful. After successfully programming the new key fob, switch the ignition back to the “OFF” position and test all buttons to make sure they function properly. How do I change the battery on my keyless entry system? Replace the batteries in your keyfob each few years or if you notice that your keyfob is less responsive. This can be done in less than 10 minutes. You don't need to reprogramme the key fob each time you replace the battery. You'll need to ensure you have the right battery in your inventory. If you flip the key fob over, it should have the battery's type written on it. If mazda 6 key fob is not visible, you can open the key fob with a flat-head screwdriver and check inside. Typically, key fobs use CR-1620 batteries that are readily available at numerous stores including Home Depot, Walmart, & AutoZone. It is easy to access the key fob after taking out the mechanical key. Use a screwdriver that is flat or your fingernail to accomplish this. Then, remove the old battery and replace it with the one that you previously purchased. The positive (+) side of the new battery should be facing upwards. Reassemble the two sides and then snap it close. Certain keys require programming and can only be done with a specific tool that an automotive locksmith or dealer has access to. Keys that are not transponder-compatible do not require programming, therefore they are a good choice for those who don't have the tools to program their vehicle.