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Nissan Car Key Replacement Replacing a Nissan key fob battery is usually 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 the key code that should be stored in a secure location and should match the one that came with your car. Transponder Keys A lot of the time, in newer automobiles transponder keys usually come with an RFID microchip within the key that transmits a unique number to the car when it is inserted into the ignition. It is designed to stop theft by ensuring that only the right key is able to start the car. Contact your local dealership or locksmith to see the demonstration of this technology. When the transponder key is inserted in the ignition, it sends an electrical signal to the chip inside the vehicle's engine control unit (ECU). The ECU checks if the code on the key is compatible with the serial number of the ECU. If it does then the ECU then disengages the immobilizer, allowing the engine to begin. If the code isn't compatible it, the ECU will block the engine from starting. They're more expensive than traditional keys made of metal but they provide greater security. The cost of these keys is more expensive than traditional metal keys however, they provide greater security. Many people wonder if it is possible to duplicate the transponder keys themselves. The answer is yes. However, it's preferential to leave it up to auto locksmiths. The process may differ according to the make and model of your car. Mechanical Keys Many older Nissan automobiles came with mechanical keys. These keys were made of metal and did not feature remote functions, and were only capable of unlocking the doors and the ignition cylinders in the car. If the key you have is damaged or broken, the case is damaged, a locksmith can usually repair the internal parts and make a new one that functions as new. A reputable and certified auto locksmith can also cut keys at a cheaper cost than a dealership. There are various kinds of mechanical keys and each one has its unique method of replacement. Linear switches for instance have a linear actuation graph. When you press the button down, it will move until it hits an obstruction. The switch will send the signal to start the car when the key is put into the ignition. Intelligent keys have an internal chip that communicates with the computer system of the vehicle. This means that when you lose your key it will need to be replaced with a new one that is programmed to work with the particular vehicle. This requires more advanced key technology, only available through an locksmith for automobiles. It is more expensive than a standard replacement key at the dealership. Key Fobs Key fobs have been an everyday feature in the majority of cars since the latter part of the 1990s. They allow you to unlock, lock and arm the alarm of your car with the pressing of a key. Many people believe that these systems are secure enough that only someone with your key code can take off with your car. Unfortunately, that's not always the case. It is possible for less cautious individuals to exploit these systems in a few easy steps. If your Nissan's key fob doesn't function as it should, you might require replacing the battery. Most key fobs have a rechargeable CR2025 or CR2032 battery, and they typically last for two years. If you're not sure of how to change the battery, refer to the owner's manual for instructions. If your key fob won't turn on due to a larger issue, it could need to be replaced or programmed. These issues are more complicated to fix than the simple replacement of batteries, and they might require the assistance of an expert auto locksmith. Some companies specialize on replacing and repairing intelligent keys and can provide you with a OEM intelligent key for a lower cost than the dealer. They are also able to come to your house, preventing you from having to leave your vehicle at a service center. They are also on-call all hours of the day all week. Remotes Certain Nissan models have a remote keyless technology that utilizes a keyfob to unlock the door and/or start your engine. A spare key in case you misplace your key is highly recommended. A replacement key fob that works could save you from having to pay for towing and the cost of replacing your ignition keys. Fobs emit a sound that communicates with the car's computer to complete a series of tasks, like locking or unlocking the doors and activating the trunk release, or sounding the alarm that sounds the panic alarm. Browse our assortment of Nissan replacement key fobs to find the perfect one for your particular model and year. You can also purchase a pre-programmed key fob which is a less costly alternative. Be sure to choose the correct design, as some look similar and can cause confusion if they're not compatible. Additionally, replacement key nissan selling a pre-programmed device typically require proof of ownership or registration to ensure authenticity. Beware of websites which do not require this information and could be fraudulent.