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Nissan Car Key Replacement Replacing a Nissan key fob battery is usually a quick and simple process. 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 also require your key code, which must be stored in a secure location and should match the one that came with your vehicle. Transponder Keys Most often found in modern cars, transponder keys include an RFID microchip in the key that transmits a unique number to the car every time it is placed in the ignition. The idea behind this technology is to prevent theft by making sure that only the right key is able to start the car. If you'd like to learn more about how this technology works call your local locksmith or dealer to schedule demonstrations. When the transponder keys are inserted into the ignition, it sends an electrical signal to the chip within the vehicle's engine control unit (ECU). The ECU determines if the code on the key corresponds to the digital serial number of the ECU. If it does, the ECU removes the immobilizer to allow the engine to start. If the code is not compatible it, the ECU will refuse to accept it and stop the engine from beginning. They cost more than traditional metal keys but provide added security. The cost of these keys is higher than traditional keys made of metal, but they provide more security. Many people wonder if it is possible to duplicate the transponder-key by yourself. The answer is yes. However, it's best to leave it up to auto locksmiths. Besides, the process can differ based on your vehicle's make and model. Mechanical Keys Many older Nissan automobiles were equipped with mechanical keys. The traditional keys made of metal did not have remote functions, and were able to unlock the doors and ignition cylinders on the car. If the key you have is damaged or broken, the case is damaged, a locksmith will usually replace the inner parts and make a replacement that operates like new again. A licensed and reputable auto locksmith can also cut the key at a less cost than a dealership. There are a few different types of mechanical keys, each of which has its own unique replacement process. Linear switches, for instance have a linear actuation graph. This means that when you press the key down it will move a certain distance until it reaches the stopper or activates an internal spring. When the key is inserted into the ignition the switch will send a signal to the car to turn it up. Intelligent keys contain an electronic chip that communicates with the computer system of the vehicle. This means that when you lose your keys, it will need to be replaced with a new one that is programmed to work with your specific vehicle. This requires a higher level of key technology, which is only available through an automotive locksmith that is specialized, and will cost you more than a regular replacement key would at the dealership. Key Fobs Since the late 1990s, key fobs became a standard in almost all automobiles. You can unlock, lock and arm your car's alarm system with the click of a switch. Many people believe that these systems are secure enough that only someone who knows your key code can steal your car. Unfortunately, this isn't always true. It is possible for less cautious individuals to profit from these systems in a few easy steps. It's possible that you need to replace your Nissan key fob's battery if it's no longer functioning correctly. The rechargeable CR2025 or CR2032 batteries that are used in the majority of key fobs last about two years. Refer to the owner's guide for directions if you're uncertain about how to replace the battery. If your key fob does not function due to a major issue, you may need to replace or program it. These issues could be more complicated than replacing the battery and may require the assistance of an auto locksmith. Some locksmiths specialize in replacing and repairing intelligent keys and will provide you with a OEM intelligent key at a price lower than the dealer. They are also able to come to your house, preventing you from having to leave the vehicle at a service centre. They are available 24 hours a days, 7 days a weeks. Remotes Some Nissan models have a remote keyless technology that utilizes keys to open the door and/or to start your engine. A spare key in case you lose yours is highly recommended. A functional replacement key fob could save you the expense of a tow to the dealership, as well as the cost of replacing the ignition keys that you lost. Fobs emit an electromagnetic signal that communicates with the computer in the vehicle to complete a sequence of tasks, such as locking or unlocking the doors and activating the trunk release, or sounding the panic alarm. Explore our collection of Nissan key fobs to find the right one for your model and year. You can also order one that is pre-programmed for the same price. Just be sure to select the correct style, since several look similar and may cause headaches if not compatible. nissan key fobs who provide preprogrammed keys typically require evidence of ownership or registration to confirm legitimacy. Beware of sites that do not require this information and may be frauds.