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Nissan Car Key Replacement Replacing the 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 require your keycode, which you should keep safe and should be the same as that of your car. Transponder Keys Transponder keys are typically found in modern vehicles. They come with an RFID microchip that emits a unique car number when the key is placed in the ignition. nissan smart key is designed to ensure that only the right key can be used to start the engine and stop theft. Contact your local dealer or locksmith to view an example of this technology. When the transponder is inserted in the ignition, it sends a message to the chip inside the engine control unit (ECU) of the vehicle. The ECU is then able to determine whether or not the code in the key is in line with its digital serial number. If it does, the ECU then disengages the immobilizer and allows the engine to start. If the code doesn't matched, then the ECU will deny the signal and prevent the engine from getting started. They're more expensive than traditional metal ones, however, they are more secure. However car thieves have developed in the past and discovered ways to circumvent this anti-theft device, so the extra cost isn't enough to stop them completely. Many people wonder if they can copy a transponder key themselves – the answer is yes however, it is best to leave it to professionals who can help you. Furthermore, the procedure can vary depending on your car's model and make. Mechanical Keys Many older Nissans were equipped with mechanical keys. These traditional keys did not come with remote functions and were used to open the doors of the vehicle and the ignition cylinders. Locksmiths can repair the internal components of a damaged key or damaged case to make a replacement that works just like the original. A reputable and certified auto locksmith should also be able to cut you a brand new key at a much lower cost than what the dealership would charge. There are a variety of types of mechanical keys that each have its own unique replacement process. Linear switches come with the ability to operate in a linear manner, for example. This means that, as you push the switch down it will move certain distance until it hits an obstruction or triggers an internal spring. The switch will send the signal to start the car when the key is placed in the ignition. Intelligent keys have an electronic chip that communicates with the computer system of the vehicle. This means that if you lose your key, it will need to be replaced with a brand new one that has been programmed to work with the particular vehicle. This requires a higher level of technology in the key that can only be obtained from a specialized automotive locksmith, and will cost you more than a regular replacement key from the dealership. Key Fobs Key fobs have been an everyday feature in the majority of automobiles since the end of the 1990s. You can unlock, lock and arm your car's alarm with the touch of a button. Many people think that the systems are secure enough that only a person who knows your key code can drive off with your car. Unfortunately, this is not always the case. In a few simple steps, people who aren't as meticulous can exploit these systems. If your Nissan's key fob isn't functioning as it should, you might require replacing the battery. Most key fobs are powered by rechargeable CR2025 or the CR2032 battery, and generally last between two and three years. Check the owner's manual 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 it or program it. These issues can be more difficult to fix than the simple replacement of batteries, and they might require the assistance of a professional auto locksmith. Certain companies specialize in repairing and replacing smart keys, and they are able to provide you with an OEM smart key at cheaper than the dealership. They can also come to you, saving you the inconvenience of having to drop off your vehicle in the service center. They are available all hours of the day, 7 days a weeks. Remotes There are some Nissan models that come with a remote keyless entry system, that uses keys to unlock your door and/or turn on the engine. It is recommended that you have a spare in case yours gets lost. A replacement key fob that functions will save you from having pay for a tow and the cost of replacing your lost ignition keys. Fobs emit a signal that communicates with the vehicle's onboard computer to complete a sequence of actions, including locking or unlocking the doors as well as activating the trunk release, or sounding the alarm to alert you to a panic. Shop our selection of Nissan replacement key fobs to find a suitable fob to your particular model and year. You can also buy one that is pre-programmed for an even lower cost. Be sure to choose the right style, as they all look alike and could cause confusion if they're not compatible. Additionally, online sellers selling an already-programmed fob usually require proof of ownership or registration to prove authenticity. Sites that do not request this information could be scams.