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Nissan Car Key Replacement Nissan key fob batteries are easy to replace. 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 be the same as that of your vehicle. Transponder Keys Transponder keys are typically found in modern vehicles. They feature an RFID microchip that transmits a unique vehicle code when the key is placed in ignition. It is designed to ensure that only the correct key is able to start the engine, and to prevent theft. If you want to know more about the technology's working and how it works, call your local locksmith or dealership for a demonstration. When the transponder key is placed in the ignition, it sends a signal to the chip within the vehicle's engine control unit (ECU). The ECU examines if the number on the key matches the serial number digital 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 code, the ECU will refuse to accept it and stop the engine from starting. The keys are more expensive than traditional keys made of metal however, they are more secure. The cost of these keys is higher than traditional keys made of metal but they offer greater security. car key replacement nissan ask if they can duplicate a transponder key at home – the answer is yes but it's better to leave the job to professional auto locksmiths. The procedure can vary depending on the make and model of your vehicle. Mechanical Keys Many older Nissans were equipped with mechanical keys. These traditional metal keys did not feature remote functions, and were able to unlock the doors and the ignition cylinders in the car. A locksmith can change the internal components of a broken key or a damaged case and create a replacement key that functions as good as new. A reputable and qualified auto locksmith can also make a new key for a much lower cost than the dealership charge. There are a variety of kinds of mechanical keys, each of which has its own unique replacement procedure. Linear switches, like come with a linear-actuation graph. This means that as you press the key down it will move down a certain distance until it hits a stopper or actuates an internal spring. The switch will send a signal to start the car once the key is introduced into the ignition. Intelligent keys contain the chip that connects to the computer system of the vehicle. When you lose your key it will need to be replaced with a fresh one programmed to work for the vehicle. This requires a more sophisticated key technology that is only available through a specialized automotive locksmith. It is more expensive than a standard key replacement at the dealership. Key Fobs Key fobs have become a standard feature in most cars since the late 1990s. You can unlock, lock and arm your car's alarm system with the touch of a button. Many people believe that the systems are safe enough that only those who has access to your key code can steal your vehicle. However, this isn't always the case. In a couple of easy steps, people who aren't as meticulous can exploit these systems. You may need to replace your Nissan key fob's battery in case it's not functioning correctly. The rechargeable CR2025 and the CR2032 batteries that are found in all key fobs last for about two years. Consult your owner's guide for instructions if you are not sure how to replace the battery. If your key fob won't turn on because of a more serious issue, it might have to be replaced or programmed. These issues are more complicated to fix than the simple replacement of batteries, and they may require the help of an expert auto locksmith. Some companies specialize in repairing and replacing smart keys, and they can provide you with an OEM intelligent key for cheaper than the dealership. They are also able to visit you, saving you the burden of having to leave your vehicle in the service center. They are also on-call all hours of the day, seven days a week. Remotes Some Nissan models have a remote keyless system that uses keys to open the door and/or start your engine. Having a spare key in case you lose your key is highly recommended. A key fob replacement that functions can save you from having to pay for a tow or the cost of replacing your ignition keys. Fobs emit frequencies that communicate with the computer of the vehicle to perform a series of tasks such as locking and unlocking doors and trunk release, as well as sounding panic alarm. Explore our collection of Nissan key fobs and find the best one for your specific model and year. You can also buy a pre-programmed fob for an even more affordable option. Be sure to choose the correct style, since many look similar and can cause confusion if they're not compatible. Online sellers who provide a preprogrammed keyfob usually require evidence of ownership or registration to confirm authenticity. Websites that don't require this information could be frauds.