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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 the key code that should be kept in a secure place and should match the one that came with your car. Transponder Keys Transponder keys can be used in newer cars. They are equipped with an RFID microchip that transmits a unique vehicle code when the key is placed in the ignition. It is designed to prevent theft by making sure that only the correct key can be used to start the vehicle. If you'd like to know more about how this technology works, contact your local locksmith or dealer to schedule demonstrations. When the transponder is inserted into the ignition, the key transmits a message to the chip within the engine control unit (ECU) of the vehicle. The ECU checks to see if the key's code on the key matches the serial number digital of the ECU. If it does, the ECU will then release the immobilizer and permits the engine to begin. If the code doesn't matched to the code, then the ECU will block the signal and prevent the engine from beginning. They are more expensive than traditional metal keys but give you extra security. However, car thieves have adapted over time and found ways to get around this anti-theft system and so the additional cost isn't enough to deter them entirely. Many people wonder if you could copy a transponder keys for themselves. The answer is yes however, it is best to leave it to professional auto locksmiths. Additionally, the process could vary depending on your car's model and make. Mechanical Keys Many older Nissans were equipped with mechanical keys. The traditional keys made of metal did not come with remote functions and were used to open the doors of the car and the ignition cylinders. If the key you have is damaged or broken, the case is damaged, a locksmith can usually repair the internal parts and create a replacement that functions as new. A reputable and qualified auto locksmith will also be able to cut a new key for a much lower price than the dealership will charge. There are various kinds of mechanical keys, each of which has its own unique replacement process. Linear switches come with an actuation chart that is linear, for example. This means that when you press the key down it will move a certain distance until it reaches the stopper or activates an internal spring. When the key is put into the ignition the switch will send an electronic signal to the car to start it up. Intelligent keys are equipped with the chip that connects to the computer system of the vehicle. This means that if you lose your key it will need to be replaced with a new one that is programmed to work with your particular vehicle. This requires more advanced key technology, only accessible through a specialized locksmith for cars. It will cost more than a standard replacement key at the dealership. Key Fobs Since the late 1990s key fobs became a standard in almost all cars. You can lock, unlock and arm your car's alarm system with the click of a switch. Many people assume that the systems are secure enough that only someone who has access to your key code is able to drive away with your car. Unfortunately, that's not always the situation. It is possible for less cautious people to take advantage of these systems in only a few simple steps. If your Nissan's key fob doesn't function as it should, you may require replacing the battery. The rechargeable CR2025 and the CR2032 batteries used in most key fobs last for about two years. Consult TheKeyLab for the correct procedure if not sure how to change the battery. If your key fob doesn't work because of a more serious issue, it might need to be replaced or programmed. These problems can be more difficult to fix than the simple replacement of batteries, and may require the help of an expert auto locksmith. Some companies specialize on replacing and repairing smart keys and can provide you with an OEM intelligent key at a cheaper cost than the dealer. They can also come to your house, preventing you from having to leave your vehicle at a garage. They are open all hours of the day all week long. Remotes Certain Nissan models have a remote keyless technology that utilizes an electronic key fob to unlock the door and/or start the engine. A spare key in case you lose your key is highly recommended. A key fob replacement that functions can help you avoid having to pay for a tow and the expense of replacing 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 opening trunks, activating trunk release and alarms that sound panic. Explore our collection of Nissan key fobs for replacement to find the right one for your specific model and year. You can also buy a preprogrammed key fob, which is a more affordable option. Choose the right style as numerous look alike and may cause problems if they are not compatible. Also, online sellers offering a pre-programmed device typically require evidence of ownership or registration in order to verify legitimacy. Websites that do not require this information could be a scam.