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Nissan Car Key Replacement Nissan key fob batteries are simple 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 need your key code which should be stored in a secure location and should match with the one that came with your car. Transponder Keys Transponder keys can be used in newer cars. They feature an RFID microchip that emits a unique car number when keys are inserted into the ignition. It is designed to ensure that only the right key is able to start the engine and prevent theft. Contact your local dealer or locksmith to view a demonstration of this technology. When the transponder key is inserted in the ignition, it sends an electrical signal to the chip in the vehicle's engine control unit (ECU). The ECU is then able to determine whether or not the number in the key matches with its own digital serial number. If it does then the ECU is then able to disengage the immobilizer and allows the engine to begin. If the code does not match it, the ECU will reject it and stop the engine from beginning. These keys are more costly than traditional metal ones, but they provide greater security. However car thieves have changed over time and found ways to circumvent this anti-theft device and the additional cost isn't enough to deter them entirely. Many people wonder if you can copy a transponder key by themselves. The answer is yes but it's best to leave it to professional auto locksmiths. Furthermore, the procedure can differ based on your vehicle's make and model. Mechanical Keys Many older Nissan automobiles came with mechanical keys. These keys, which were made of metal, did not come with remote functions and could only be used to open the doors of the vehicle and the ignition cylinders. If your key fails or the case is damaged, a locksmith can usually repair the internal components and make a replacement that works like new. car key cutting licensed and reputable auto locksmith can also cut a key for a lower cost than a dealership. There are a few different types of mechanical keys each with its own unique replacement method. Linear switches feature a linear actuation chart for example. When you press the switch down it will move until it reaches a stopper. When the key is put into the ignition the switch will send an indication to the car to turn it up. Intelligent keys contain an embedded chip that communicates with the computer system of the vehicle. When you lose your key it will need to be replaced with a brand new one programmed to work for the vehicle. This requires a more advanced key technology, only available through a specialized locksmith for automotive. It will cost more than a standard key replacement at the dealership. Key Fobs Since the end of the 1990s, key fobs are a standard in almost all cars. You can unlock, lock and arm your car's security alarm with the push of a button. Many people believe that these systems are so secure that only a person with your key code can take off with your car. But this isn't always true. In a few simple steps, people who aren't as meticulous could take advantage of these systems. If your Nissan's key fob has stopped working as it should, you may need to replace the battery. The rechargeable CR2025 as well as CR2032 batteries that are found in all key fobs will last around two years. If you're not sure of how to replace the battery, check your owner's manual to learn more. If your key fob won't turn on due to a more serious issue, it might need to be replaced or programmed. These issues can be more difficult to repair than the simple replacement of batteries, and they might require the assistance of a professional auto locksmith. Some companies specialize on repair and replacement of intelligent keys and will provide you with a OEM intelligent key at a cheaper cost than the dealer. They can also come to your home, saving you from having to leave your vehicle at a service centre. They are also available all day, seven days a week. Remotes Some Nissan models have a remote keyless system that uses a keyfob to open the door and/or start the engine. Having a spare key in case you lose your key is highly recommended. A working replacement fob for your key can save you the expense of a tow to the dealership and the high cost of replacing your lost ignition keys. Fobs emit frequencies that communicate with the vehicle's computer to perform a series of tasks, including locking and unlocking doors and trunk release, as well as sounding panic alarm. Browse our assortment of Nissan replacement key fobs to find a match for your particular model and year. You can also purchase an already-programmed fob to make it the same price. Choose the right style as many look alike and could create problems if not compatible. Also, online sellers offering an already-programmed fob usually require documents of ownership or registration to confirm legitimacy. Be wary of websites that do not require these details and could be frauds.