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Nissan Car Key Replacement Replacing a Nissan key fob battery is generally an easy and simple task. 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 in a safe place and should match the one in your vehicle. Transponder Keys Most often found in modern cars, transponder keys contain an RFID microchip within the key that transmits a unique number to the car whenever it is installed in the ignition. It is designed to ensure that only the right key can start the engine and stop theft. If you'd like to know more about the technology's working and how it works, call your local locksmith or dealer for an explanation. When the transponder key is inserted in the ignition, it sends an electrical signal to the chip in the vehicle's engine control unit (ECU). The ECU determines if the code on the key matches the serial number digital of the ECU. If it does it, the ECU removes the immobilizer, allowing the engine to begin. If the code is not in line and the ECU will deny the signal and prevent the engine from beginning. They're more expensive than traditional metal ones, but they are safer. However car thieves have changed over time and found ways to circumvent this anti-theft device, so the extra cost won't stop them completely. Many people are wondering if they can copy a transponder key by themselves. The answer is yes but it's better to leave it to professionals who can help you. Additionally, the process could differ based on your vehicle's model and make. Mechanical Keys Many older Nissans came with mechanical keys. These traditional metal keys did not have remote functions and could only be used to unlock the doors of the vehicle and the ignition cylinders. If your key breaks or the case is damaged, a locksmith can typically replace the internal components and make a replacement that functions as new. A reputable and qualified auto locksmith is also able to make a new key at a less cost than the dealership will charge. There are several kinds of mechanical keys each with its own unique replacement process. Linear switches, for instance, have a linear actuation graph. This means that, as you push the button down it will move down a certain distance until it reaches the stopper or activates an internal spring. The switch will send the signal to start the car once the key is placed in the ignition. Intelligent keys are equipped with chips that communicate 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 your particular vehicle. This requires a higher level of technology in the key that can only be obtained from an automotive locksmith that is specialized, and will cost more than a standard replacement key would at the dealership. Key Fobs Key fobs have been an essential feature in many cars since the latter part of the 1990s. You can unlock, lock or arm your car's security alarm with the push of a button. Many people believe that these systems are safe enough that only those with your keycode can take off with your car. However, this isn't always true. In a few simple steps, people who aren't as meticulous can take advantage of these systems. If your Nissan's key fob isn't functioning as it should, you may require replacing the battery. The majority of key fobs utilize rechargeable CR2025 or CR2032 battery. They generally last around two years. Check the owner's manual for specific instructions if you're uncertain about how to replace the battery. If your key fob won't turn on due to a more significant issue, it might have to be replaced or programmed. These problems may be more complicated than a simple replacement of the battery and might require an auto locksmith's help. Some locksmiths specialize in replacing and repairing smart keys, and can provide you with a OEM intelligent key for a lower cost than the dealer. They are also able to come to you, saving you the hassle of having to leave your vehicle at a service center. They are also on-call all hours of the day, seven days a week. Remotes There are some Nissan models with a remote keyless entry system which makes use of a key fob to unlock your door and/or start your engine. It is recommended to have a spare in the event that yours gets lost. A working replacement fob for your key will help you avoid the cost of an extra trip to the dealership and the pricey replacement cost for your ignition keys. keyless start emit a frequency that communicates with the car's onboard computer to complete a sequence of tasks, such as locking or unlocking the doors or trunk release, or sounding the alarm that sounds the panic alarm. Explore our range of Nissan key fobs and find the best one for your model and year. You can also purchase a preprogrammed keyfob, which is a more affordable alternative. Just be sure to select the correct style, since many look similar and can create headaches if they're not compatible. Online sellers that provide a preprogrammed keyfob typically require evidence of registration or ownership to verify authenticity. Beware of sites that do not ask for this information and could be frauds.