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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 safe location and should match with the one that came with your car. Transponder Keys Most often found in modern cars transponder keys are typically found in newer cars. They come with an RFID microchip in the key which transmits a unique code to the car when it is put into the ignition. It is designed to ensure that only the correct key is able to start the engine and stop theft. If you'd like to find out more about how this technology works, contact your local locksmith or dealership to schedule a demonstration. When the transponder gets inserted in the ignition, it sends an information to the chip inside the engine control unit (ECU) of the vehicle. The ECU is then able to determine whether the code contained in the key is in line with its digital serial number. If it does, the ECU disables the immobilizer in order to allow the engine to start. If the code does not in line and the ECU will block the signal and prevent the engine from getting started. They cost more than traditional metal keys but give you extra security. However car thieves have changed 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 is possible to duplicate the transponder key yourself. The answer is yes. However, it's better to leave it up to auto locksmiths. The process can also vary depending on the brand and model of your vehicle. Mechanical Keys Many older Nissans were equipped with mechanical keys. These traditional metal keys were not equipped with remote functions and were only used to open the doors of the car and the ignition cylinders. If nissan qashqai spare key fails or the case is damaged, a locksmith will usually replace the inner components and make a replacement that works as good as new. A reputable and certified auto locksmith can also make a new key at a lower price than the dealership will charge. There are several different types of mechanical key and each one has its unique method of replacement. Linear switches come with an actuation chart that is linear, for instance. This means that, as you push the switch down it will move a certain distance until it reaches an obstruction or triggers an internal spring. The switch will send the signal to start the car when the key is put into the ignition. Intelligent keys are equipped with chips that communicate with the computer system of the vehicle. This means that when you lose your key, it will have to be replaced with a new one that is programmed to work with your particular vehicle. This requires more advanced key technology that is only available through an automotive locksmith. It is more expensive than a standard key replacement at the dealership. Key Fobs Key fobs have been an essential feature in many cars since the late 1990s. You can unlock, lock or arm your car's alarm at the push of a button. Many people believe that these systems are secure enough to ensure that only the person who knows your code can steal your car. Unfortunately, that's not always the case. It's possible for less scrupulous people to take advantage of these systems with the simplest of steps. If your Nissan's key fob has stopped working as it should, you may require replacing the battery. The rechargeable CR2025 and the CR2032 batteries found in most key fobs will last around two years. Consult your owner's guide for specific instructions if you're not sure how to replace the battery. If your key fob doesn't work because of a more serious issue, it might have to be replaced or programmed. These issues may be more complicated than simply replacing the battery and may require the assistance of an auto locksmith. Some companies specialize in repairing and replacing smart keys, and are able to provide you with an OEM intelligent key for an affordable price compared to the dealership. They can also be at your location, avoiding you the hassle of having to leave your vehicle in an establishment for service. They are also available all hours of the day, all week. Remotes Some Nissan models come with a remote keyless technology that utilizes keys to open the door and/or to start your engine. A spare key in case you misplace yours is highly recommended. A working replacement key fob will save you the cost of an extra trip to the dealership and the cost of replacing your lost ignition keys. Fobs emit frequencies that communicate with the computer in your vehicle to perform tasks such as locking and unlocking doors opening trunks, activating trunk release and alarms that sound panic. Browse our selection of Nissan key fobs and find the one that is right for your year and model. You can also buy a preprogrammed key fob, which is a less expensive alternative. Select the correct style as many of them look similar and can cause problems if not compatible. Online sellers who provide a preprogrammed keyfob typically require evidence of registration or ownership to verify legitimacy. Websites that do NOT request this information could be a scam.