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Nissan Car Key Replacement Replacing the Nissan key fob battery is generally an easy and straightforward 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 kept in a safe location and should match the one that came with your vehicle. Transponder Keys A lot of the time, in newer automobiles, transponder keys include an RFID microchip inside the key which transmits a unique code to the car when it is put into the ignition. It is designed to ensure that only the correct key is able to start the engine and stop theft. Contact your local dealer or locksmith to see a demonstration of this technology. When the transponder is put into the ignition, the key transmits a message to the chip within the engine control unit (ECU) of the vehicle. The ECU checks to see if the key's code on the key corresponds to the digital serial number of the ECU. If it does, then the ECU will release the immobilizer so that the engine can start. If the code isn't compatible with the ECU will refuse to accept the signal and stop the engine from starting. They're more expensive than traditional keys made of metal but they are safer. The cost of these keys is higher than traditional metal keys however, they provide greater security. Many people are wondering if it is possible to copy the transponder-key by themselves. The answer is yes. However, it's better to leave it to auto locksmiths. Furthermore, the procedure can vary depending on your car's model and make. Mechanical Keys Many older Nissans came with mechanical keys. These keys, which were made of metal, did not come with remote functions and were only used to open the doors of the vehicle and the ignition cylinders. A locksmith can replace the inside parts of a damaged key or damaged case to make a replacement that works as good as new. A reputable and certified auto locksmith can also cut keys at a lower cost than the dealership. There are various kinds of mechanical keys and each one has its own unique process for replacement. Linear switches are equipped with the ability to operate in a linear manner, for instance. This means that, as you push the button down, it will move a certain distance until it hits the stopper or triggers an internal spring. The switch will transmit the signal to start the car once the key is inserted into the ignition. Intelligent keys are equipped with a chip inside them that communicates with the computer system in your vehicle. If you lose your key, it must be replaced with a new one that has been programmed to work with the vehicle. This requires a higher degree of technology for keys that is only available through a specialized automotive locksmith, and will cost you more than a regular replacement key at the dealership. Key Fobs Key fobs have been an essential feature in many cars since the late 1990s. They allow you to unlock, lock and arm the alarm of your car with the push of a button. Many people believe that these systems are so secure that only someone who has your key code will be able to take off with your car. However, that's rarely the situation. In just a few easy steps, people who aren't as meticulous can take advantage of these systems. If your Nissan's key fob has stopped working as it should, you may require replacing the battery. Most key fobs have rechargeable CR2025 or the CR2032 battery. They typically last for two years. If you're not sure how to replace the battery, refer to your owner's manual to learn more. If your key fob doesn't work 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. nissan car keys specialize in repairing and replacing smart keys, and they can provide you with an OEM smart key at a much lower price than the dealership. They are also able to come to your home, saving you from having to leave your vehicle at a garage. They are available all hours of the day all week. Remotes Certain Nissan models have a remote keyless system that uses a keyfob to open the door and/or to start your engine. A spare key in case you misplace your key is highly recommended. A functioning replacement key fob will help you avoid the cost of a tow to the dealership and the hefty fee to replace the ignition keys that you lost. Fobs emit frequencies that communicate with the vehicle's computer to perform a series of tasks like locking and unlocking doors, activating trunk release or the sounding of a panic alarm. Explore our collection of Nissan key fobs and locate the best one for your year and model. You can also buy a pre-programmed key fob for an even lower cost. Just be sure to select the correct design, as several look similar and may create headaches if they're not compatible. Online sellers that offer preprogrammed key fobs usually require evidence of ownership or registration to prove authenticity. Websites that don't request this information could be scams.