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Mazda 2 Key Fob ReplacementWhile it is frustrating to have a fob stop working, it is fairly frequent and easily fixed. It is usually a a matter of replacing the battery.Batteries for replacement are available at a variety of hardware stores and big-box retailers. You can also find directions in the owner’s manual, or on YouTube on how to replace the battery by opening the fob.What is a keyless-entry system?The keyless entry system inside your car is a remote control system that enables you to lock and unlock your vehicle without the need to physically insert the keys. It is usually contained on a key fob or built into your ignition key handle. Some models offer the option of locking remotely the tailgate and trunk.The system transmits an audio signal to the computer in your car. The car will then analyze the signal to determine whether it is the correct key. If it is, the doors will automatically unlock and the engine will be started. The key fob in itself contains an integrated security chip, or transponder, that prevents the vehicle from starting if the incorrect key is used.While keyless entry systems are convenient, they have a few drawbacks. Children can accidentally activate them by playing with them, or they can be turned on while the owner isn’t in the vehicle. This can cause power windows and other functions of the car to operate without the owner’s consent or knowledge and could even trigger the alarm.There are numerous ways for thieves to hack into the computer in your car to fool it into thinking your fob’s key was close enough to allow you to start your car. It is vital to have a fob or backup key.How do I replace my keyless entry system?If the battery in your car’s key fob dies while you’re on the go, that can be a huge inconvenience. It’s simple to replace the battery on the Mazda 2 flip key transponder. You will need to know the correct procedure to open the key fob, as well as which type of battery need to purchase.Use a screwdriver with tape wrap to gently open the case starting from one end to the other. Be careful not to damage it. Once the case has been opened, take out the old battery. Place the case somewhere that you will not forget about it. Replace the new battery, ensuring to position it so that the positive side faces towards the upwards.It’s recommended to note the code number on the reverse of your manual key, to allow you to program the replacement fob with it. While you can duplicate a key made of metal in a hardware store, many of the latest smart keys require programming by a locksmith or dealer.The cost of a brand new fob, a new programming device, and mechanical backup keys can be costly. Make sure to check your warranty or auto club membership or insurance policy to determine if they will cover the cost. You might be able to save money by purchasing an aftermarket key fob online, and having it programmed by locksmith.How do I program my keyless entry system?In general, the same steps can be used to program a key fob for all major automobile models. However, the process for some vehicles may be different and may require specialized hardware or software. In these instances it is best to refer to the manual or contact an authorized dealer further assistance.Make sure you have the tools and materials that you need prior to beginning. It is recommended that you read the instruction manual for the keyless entry system in order to gain more understanding of how it functions. Installation is simple but the cover for the steering wheel needs to be removed to access the wires to connect. Once you have all the wires in place, it’s important to wrap them with electrical tape to ensure protection and insulation.To program a key fob on the new vehicle, insert the original ignition key and turn it on the “ON” setting (not the “start” or “run”) When the key is in ignition then simultaneously press and hold both the unlock and lock button on your new remote for at least 30 seconds. If you do it correctly, your car will chime and the programming process will be successful. After successfully programming a new key fob, turn the ignition back to the “OFF” position and test all of the buttons to verify that they are working properly.How do mazda dealership key replacement change the battery on my keyless entry system?Every few years, or when the key fob seems to become less responsive, you’ll need to replace the batteries on your key fob. This is an easy task that can be accomplished in less than 10 minutes. It is not necessary to reprogram the key fob each time you change the battery.First, you’ll want to make sure you have the appropriate type of battery available. If you flip the key fob over, it should have the battery’s name written on it. If the battery type is not legible you can remove the key fob with an screwdriver with a flat head and examine inside. Key fobs generally accept CR-1620 batteries that are readily available at many stores, including Home Depot, Walmart, & AutoZone.Once you have removed the mechanical key from the key fob you can easily open it by making use of a screw driver with a flat head or your fingernail. Replace the battery you used with the one you bought. The positive (+) side of the new battery must be facing upwards. Reassemble the two sides and then snap it to close.Some key fobs need programming. This can only be done using a specific tool that is only accessible to dealers or automotive locksmiths. But, non-transponder steel keys don’t require to be programmed, which makes them a great option for those who don’t have the tools needed to program their vehicle.