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Mazda 2 Key Fob Replacement Although it can be a hassle to see a device stop working, it's fairly common and can be easily fixed. It is usually a simple matter of replacing the batteries. Batteries can be found in the majority of big-box retailers and stores. 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-entry system? The keyless entry system inside your vehicle is a remote control system that enables you to lock and unlock your vehicle without physically inserting the keys. It is usually contained on a key fob, or built into the ignition key handle. Some models even provide the option of remotely locking the trunk and tailgate. The system transmits an audio signal to the computer in your car. The car is then able 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 also contains an integrated security chip, also known as a transponder, which prevents the vehicle from starting if the incorrect key is used. While keyless entry systems are convenient, they do have some disadvantages. Children can accidentally activate them through playing with them, or they can be turned on while the owner isn't in the vehicle. This can cause the power windows and other features to work without the owner's permission or knowledge or permission, and it could cause the car alarm to go off. Another issue is that there are a multitude of ways thieves could break the security of keyless entry systems, and then hack your vehicle's computer to make it believe that your fob is near enough to be able to start the car. It is crucial to always have a backup key or fob. How do I change my keyless access system? If the battery in your car's key fob fails while you're moving, it can be a huge inconvenience. It's simple to replace the battery on the Mazda 2 flip key transponder. It's just a matter of knowing how to open the key fob and which kind of battery to purchase. Make use of a tape-wrapped screwdriver gently open the case and work from one side to the other. Be careful not to damage it. Once the case is opened you can take off the battery that was in it and put it in the case where you'll not lose it. Replace the battery, being sure to orient it so that the positive side faces towards the upwards. It's also a good idea to note down the code number on the back of your manual key, to allow you to programme the replacement fob using it. While you can duplicate an old metal key at a hardware shop, many of the newer smart keys require programming by an expert locksmith or dealer. The cost of replacing a fob, a programming key and mechanical keys for backup can add up to the total. Check your warranty on your car or auto club membership or insurance policy to determine whether they'll pay for the cost. You may be able to save money by purchasing an aftermarket fob on the internet and having it programmed by a locksmith rather than a dealership. How do I program my keyless entry system? Generally speaking, the same procedure can be used to program a key fob for the majority of major automobile models. However, the process for certain cars may be a little different and might require special hardware or software. In such cases it is recommended to refer to the manual or contact an authorized dealer further assistance. Before you begin, ensure you have all the materials and tools. mazda 2 key G28 Car Keys Solutions is recommended to go through the instruction manual for the keyless system in order to better understand how it functions. Installation is simple however, the steering wheel cover must be removed to expose the wires needed for the connection. Once you have the required wires in place, it's essential to wrap them in electrical tape for protection and insulation. To program your new key fob insert the original key into the ignition and turn it to the “ON” position (not the start or run position). When the key in the ignition is switched on, simultaneously press and keep holding both the unlock and the lock button on your new remote for 30 seconds. If you have successfully completed the process, your vehicle will chime. The programming process will also be successful. After programming the new keyfob successfully switch the ignition to “OFF” and check all buttons to make sure that they work. How do I replace the battery in my keyless entry system Replace the batteries in your keyfob every couple of years or whenever you notice that your keyfob is less responsive. This is a simple task that can be completed in less than 10 minutes. Most times you won't even have to modify your key fob's settings after replacing the battery. You'll need to make sure you have the correct type of battery in your arsenal. If you flip the key fob over it should show the name of the battery on it. If it's unclear then you can use a small flat-head screw driver to unlock the key fob and look inside. Key fobs usually use the CR-1620 battery that is readily available at many stores like Home Depot Walmart & AutoZone. After you've removed the mechanical key from the key fob, you can easily unlock it with the help of a screw driver with a flat head or your fingernail. Replace the battery you used with the one that 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 to close. Certain key fobs require programming, which can only be done using a special tool that an automotive locksmith or dealer has access to. Keys that do not have transponders do not require programming, therefore they are a good choice for those who do not have the tools to program their car.