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Nissan Car Key Replacement Replacing the Nissan key fob battery is typically a quick and simple 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 require your key code, which you must keep safe and should match that of your car. Transponder Keys Transponder keys are commonly found in more modern vehicles. They feature an RFID microchip that transmits a unique vehicle code when the key is put in ignition. The idea behind this technology is to prevent theft by ensuring that only the proper key is able to start the vehicle. Contact your local dealer or locksmith to view the demonstration of this new technology. When the transponder key is placed in the ignition, it transmits an indication to the chip in the engine control unit (ECU). The ECU will then check to see whether the code contained in the key matches its digital serial number. If it does, then the ECU will release the immobilizer to allow the engine to start. If the code isn't in line with the ECU will deny the signal and prevent the engine from getting started. They are more expensive than the traditional metal keys, but they are safer. The cost of these keys is higher than traditional keys made of metal, but they provide more security. Many people ask if they can copy transponder keys at home – the answer is yes however, it is best to leave it to professional auto locksmiths. The process may differ according to the make and model of your vehicle. Mechanical Keys Many older Nissans came with mechanical keys. The traditional keys made of metal were not equipped with remote functions and were only used to open the doors of the vehicle and the ignition cylinders. Locksmiths can replace the inside components of a damaged key or a damaged case to create a key replacement that works just like the original. extra resources and qualified auto locksmith will also be able to make a new key at a much lower price than the dealership will charge. There are a variety of types of mechanical keys each with its own unique replacement method. Linear switches, for instance come with a linear-actuation graph. This means that as you push the key down it will move down a certain distance until it reaches an obstruction 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 contain a chip in them that communicates with the computer system in your vehicle. When you lose your key it must be replaced with a new one that is programmed to work with the vehicle. This requires more advanced key technology, only available through an locksmith for cars. It will cost more than a standard replacement key at the dealership. Key Fobs Key fobs have been an integral part of many automobiles since the end of the 1990s. They let you unlock, lock and arm the alarm of your car with the push of a button. Many people think that these systems are secure enough that only a person who knows your key code is able to drive away with your car. But that's not always the situation. It's possible for less scrupulous individuals to profit from these systems with only a few simple steps. It's possible to replace your Nissan key fob's batteries if they aren't functioning correctly. Most key fobs use a rechargeable CR2025 or CR2032 batteries, and they usually last about two years. If you're not sure how to change the battery, consult the owner's manual to get advice. If your key fob isn't functioning because of a more serious problem, it may need to be replaced or programmed. These problems may be more complicated than replacing the battery, and may require the assistance of an auto locksmith. Certain locksmiths specialize in fixing and replacing intelligent keys, and can provide you with a OEM intelligent key at a price lower than the dealer. They can also deliver to you, thereby saving you the hassle of having to leave your vehicle in the service center. They are open all hours of the day, 7 days a weeks. Remotes There are some Nissan models that have a remote keyless entry system which utilizes the key fob to open your door and/or turn on the engine. Having a spare key in case you lose yours is highly recommended. A working replacement fob for your key will help you avoid the cost of an extra trip to the dealership and the pricey replacement cost for your ignition keys. Fobs emit frequencies that communicate with the vehicle's computer to perform a variety of tasks such as locking and unlocking doors and trunk release, as well as alarms that sound panic. Explore our collection of Nissan key fobs to find the one that is right for your year and model. You can also purchase an already-programmed fob to make it an even lower cost. Choose the correct style since many of them look similar and can cause problems if they are not compatible. Online sellers who offer preprogrammed key fobs typically require proof of ownership or registration to prove legitimacy. Beware of websites which do not require this information and could be scams.