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Nissan Car Key Replacement Replacing the Nissan key fob battery is usually an easy and quick 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 key code, which you should keep safe and should match that of your car. Transponder Keys Commonly found in newer vehicles transponder keys usually include an RFID microchip inside the key which transmits a unique code to the car when it is put into the ignition. The idea behind this technology is to prevent theft by ensuring that only the proper key is able to start the vehicle. If you'd like to learn more about how this technology works get in touch with your local locksmith or dealership to schedule an explanation. When the transponder gets inserted into the ignition, it sends a message to the chip that is inside the engine control unit (ECU) of the vehicle. The ECU checks if the code on the key matches the digital serial number of the ECU. If it does, the ECU will then release the immobilizer and allows the engine to begin. If the code does not compatible to the code, then the ECU will refuse to accept the signal and stop the engine from beginning. They are more expensive than traditional keys but provide added security. The cost of these keys is higher than traditional keys made of metal but they offer greater security. Many people are wondering if it is possible to copy the transponder-key by yourself. The answer is yes. But, it's better to leave it up to auto locksmiths. The process may differ depending on the brand and model of your vehicle. Mechanical Keys Many older Nissan automobiles were equipped with 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 car and the ignition cylinders. A locksmith can change the inside components of a damaged key or a damaged case and create a key replacement that works as good as new. A reputable and certified auto locksmith can also cut you a key for a lower price than the dealership. There are several kinds of mechanical keys that each have their own distinct replacement procedure. Linear switches, for example, have a linear actuation graph. This means that, as you push the key down it will move certain distance until it reaches the stopper or triggers an internal spring. When the key is inserted into the ignition the switch will send an electronic signal to the car to start it up. Intelligent keys have an electronic chip that communicates with the computer system of the vehicle. This means that when you lose your keys, it will have to be replaced with a new one that is programmed to work with the specific vehicle. This requires a higher degree of key technology that is only available through a specialist automotive locksmith and will cost more than a standard replacement key from the dealership. Key Fobs Key fobs have been a standard feature in most cars since the late 1990s. They allow you to unlock and lock the car's alarm at the press of a button. Many people assume that the systems are secure enough that only a person who knows your code can drive off with your vehicle. However, this isn't always the case. It is possible for less cautious individuals to make use of these systems with a few easy steps. It's possible to replace your Nissan key fob's battery if it's not working properly. Most key fobs have rechargeable CR2025 or the CR2032 battery, and usually last about two years. Check the owner's manual for specific instructions if you're not sure how to change the battery. If your key fob doesn't function due to a major problem, you may need to replace or program it. These issues may be more complicated than an easy replacement of the battery, and may require an auto locksmith's help. Certain companies specialize in repairing and replacing smart keys, and they are able to offer you an OEM intelligent key for a much lower price than the dealership. They can also deliver the key to your house, preventing you from having to leave the vehicle at a service center. They are available 24 hours a day and 7 days a week. Remotes There are some Nissan models that have a remote keyless entry system which utilizes keys to unlock your door and/or start your engine. Having a spare key in case you lose yours is highly recommended. A functioning replacement key fob will help you avoid the cost of an extra trip to the dealership, as well as the high cost of replacing the ignition keys that you lost. Fobs emit frequencies that communicate with the computer of the vehicle to perform tasks like locking and unlocking doors and trunk release, as well as sounding panic alarm. Browse our selection of Nissan key fobs replacements to find a match to your particular model and year. You can also order an already-programmed fob to make it an even cheaper option. Choose the right style as many of them look similar and can cause problems if not compatible. Online sellers who offer a preprogrammed key fob typically require proof of ownership or registration to prove legitimacy. nissan key replacement prices that do not ask for this information may be a scam.