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Nissan Car Key Replacement Nissan key fob batteries are simple to replace. But first you'll need to know if your car uses an intelligent fob, push to start button or regular remote/non-transponder key. You'll need your key code, which you must keep safe and should be the same as that of your car. Transponder Keys Most often found in modern cars Transponder keys typically include an RFID microchip in the key that transmits a unique code to the car every time it is inserted into the ignition. It is designed to prevent theft by making sure that only the correct key is able to start the vehicle. If you want to know more about the technology's working call your local locksmith or dealer for a demonstration. When the transponder key is placed in the ignition, it transmits an electronic signal to the chip inside the engine control unit (ECU). The ECU then examines whether or not the number in the key matches with its own digital serial number. If it does, then the ECU disables the immobilizer in order to allow the engine to start. If the code doesn't match then the ECU will reject it and prevent the engine from starting. The keys are more expensive than traditional keys made of metal however they offer greater security. The cost of these keys is more expensive than traditional metal keys however, they provide greater security. Many people wonder if you can copy a transponder key by themselves. The answer is yes however, it is best to leave it to a professional auto locksmith. Furthermore, the procedure can differ depending on the car's model and make. Mechanical Keys Many older Nissans had mechanical keys. These keys, which were made of metal, did not have remote functions and could only be used to unlock the doors of the vehicle and the ignition cylinders. Locksmiths can repair the internal components of a damaged key or a damaged case and create a replacement key that functions like new. A reputable and experienced auto locksmith can also cut a key for a lower price than the dealership. There are a variety of types of mechanical keys each with its own unique replacement method. Linear switches come with the ability to operate in a linear manner, for example. This means that, as you push the button down it will move certain distance until it reaches the stopper or triggers an internal spring. The switch will send a signal to start the car once the key is introduced into the ignition. Intelligent keys are equipped with an internal chip that communicates with the computer system of the vehicle. This means that if you lose your key, it must be replaced with a new one that is programmed to work with the particular vehicle. This requires a more advanced key technology that is only accessible through a specialized locksmith for automobiles. It is more expensive than a standard replacement key at the dealership. Key Fobs Since the late 1990s key fobs are a standard in most automobiles. They allow you to unlock and lock the alarm of your car with the pressing of a button. TheKeyLab believe that these systems are secure enough that only someone with your keycode can escape with your car. However, that's rarely the situation. In just a few easy steps, less scrupulous people can exploit these systems. It's possible that you need to replace your Nissan key fob's batteries if they aren't functioning correctly. The rechargeable CR2025 or CR2032 batteries that are used in the majority of key fobs last for about two years. Consult your owner's guide for specific instructions if you're uncertain about how to replace the battery. If your key fob isn't functioning because of a more serious issue, it might need to be replaced or programmed. These issues are more difficult to fix than a simple battery replacement, and might require the assistance of a professional auto locksmith. Some companies specialize on replacing and repairing intelligent keys and will provide you with a OEM intelligent key for a lower cost than the dealer. They are also able to deliver to you, thereby saving you the hassle of having to leave your vehicle in an establishment for service. They are available all hours of the day, 7 days a weeks. Remotes There are Nissan models with a remote keyless entry system, which utilizes an electronic key fob to unlock your door and/or start your engine. It is recommended to have a spare for the event that yours is lost. A replacement key fob that works could help you avoid having to pay for a tow and the expense of replacing your ignition keys. Fobs emit frequencies that communicate with the car's computer to perform a series of tasks such as locking and unlocking doors opening trunks, activating trunk release and sounding a panic alarm. Browse our selection of Nissan key fobs replacements to find a match for your particular model and year. You can also buy a pre-programmed key fob for the same price. Just be sure to select the correct style, as they all look alike and could cause problems if they are not compatible. Online sellers that provide a preprogrammed keyfob usually require proof of ownership or registration to prove the legitimacy of the offer. Be wary of websites that don't require this information and could be scams.