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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 also require the key code that should be stored in a secure location and should match with the one that came with your car. Transponder Keys Transponder keys are often used in newer cars. They are equipped with an RFID microchip that sends a unique code for the car when the key is inserted into the ignition. It is designed to ensure that only the correct key can start the engine and also prevent theft. Contact your local dealer or locksmith to see the demonstration of this technology. When the transponder gets inserted in the ignition, the key sends an electronic message to the chip that is inside the engine control unit (ECU) of the vehicle. The ECU determines if the code on the key matches the digital serial number of the ECU. If it does, then the ECU will release the immobilizer to allow the engine to start. If the code isn't compatible it, the ECU will reject it and prevent the engine from beginning. These keys are more expensive than traditional keys but provide added security. However car thieves have developed over time and have found ways to circumvent this anti-theft device and the additional cost is not enough to dissuade them completely. Many people wonder if it is possible to copy the transponder keys themselves. The answer is yes. However, it's best to leave it up to auto locksmiths. The process may differ dependent on the make 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 come with remote functions and could only be used to unlock the doors of the vehicle and the ignition cylinders. A locksmith can replace the inner components of a broken key or a damaged case to create a replacement key that functions just like the original. A reputable and certified auto locksmith can also cut a key for a lower cost than the dealer. There are various kinds of mechanical keys and each one has its own unique process for replacement. Linear switches feature a linear actuation chart, for example. This means that as you push the switch down it will move down a certain distance until it reaches the stopper or triggers an internal spring. When the key is pushed into the ignition, the switch will send an indication to the car to start it up. Intelligent keys are equipped with a chip that communicates with the computer system of the vehicle. If you lose your keys, it will need to be replaced with a fresh key that is programmed for the vehicle. This requires a higher degree of technology in the key that is only available from a specialist automotive locksmith and will cost you more than a standard replacement key would at the dealership. Key Fobs Since the late 1990s key fobs became a standard in almost all automobiles. You can lock, unlock and arm your car's alarm with the touch of a button. Many people assume that the systems are safe enough that only those who has access to your key code can leave with your vehicle. Unfortunately, this isn't always true. In a couple of easy steps, less scrupulous people are able to exploit these systems. It's possible to replace your Nissan key fob's battery if it's not functioning correctly. Most key fobs are powered by rechargeable CR2025 and CR2032 battery, and generally last between two and three years. If you're not certain how to replace the battery, refer to the owner's manual for instructions. If your key fob isn't working due to a more serious issue, it might have to be replaced or programmed. These issues could be more complex than an easy replacement of the battery and might require the assistance of an auto locksmith. Certain companies specialize in fixing and replacing intelligent keys and will provide you with an OEM intelligent key at a cheaper cost than the dealer. They can also deliver to you, thereby saving you the burden of having to leave your vehicle at a service center. They are available 24 hours a day seven days a week. Remotes There are Nissan models with a remote keyless entry system, which makes use of the key fob to open your door and/or start the engine. It is recommended to have a spare for the event that yours is lost. A working replacement fob for your key will help you avoid the cost of an extra trip to the dealership and the cost of replacing the ignition keys that you lost. Fobs emit an electromagnetic signal that communicates with the car's onboard computer to complete a sequence of tasks, such as locking or unlocking the doors and activating the trunk release, or triggering the alarm that sounds the panic alarm. Explore our collection of Nissan key fobs and choose the perfect one for your specific model and year. You can also buy a preprogrammed key fob, which is a less expensive alternative. Be replace nissan key fob to choose the correct design, as 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. Websites that do not ask for this information may be a scam.