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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 need your key code, which you must keep safe and must match the one of your vehicle. Transponder Keys Transponder keys can be found in more modern vehicles. They have an RFID microchip that emits a unique car number when the key is placed in the ignition. The idea behind this technology is to prevent theft by ensuring that only the right key can be used to start the vehicle. Contact your local dealership or locksmith to view the demonstration of this technology. When the transponder is inserted into the ignition, the key sends an electronic message to the chip inside the engine control unit (ECU) of the vehicle. The ECU determines if the code on the key matches the serial number digital of the ECU. If it does, the ECU disables the immobilizer in order so that the engine can start. If the code doesn't match, the ECU will block the engine from starting. They're more expensive than traditional keys made of metal but they provide greater security. However car thieves have developed over time and found ways around this anti-theft measure therefore the extra cost is not enough to deter them entirely. Many people are wondering if it is possible to copy a transponder-key themselves. The answer is yes. However, it's better to leave it up to auto locksmiths. Additionally, the process could differ depending on the car's make and model. Mechanical Keys Many older Nissan cars came with mechanical keys. These keys were made of metal and didn't have remote functions, and were able to unlock the doors and ignition cylinders of the car. If the key you have is damaged or broken, the case is damaged, a locksmith can typically replace the internal parts and make a new one that works as good as new. A reputable and certified auto locksmith can also cut you keys at a cheaper price than the dealership. There are various types of mechanical keys each with its own unique replacement process. Linear switches come with a linear actuation chart, for instance. As you press the key down it will move until it comes to a stopper. When the key is pushed into the ignition the switch will send an indication to the car to start it up. Intelligent keys have the chip that connects to the computer system of the vehicle. If you lose your keys, it will have to be replaced with a new one that has been programmed to work with the vehicle. This requires a more sophisticated key technology that is only accessible through a specialized locksmith for cars. It is more expensive than a typical key replacement at the dealership. Key Fobs Since the mid 1990s, key fobs have been a common feature in the majority of cars. You can unlock, lock or arm your car's alarm at the press of a button. Many people believe that these systems are secure enough to ensure that only the person who knows your code can leave with your car. However, this isn't always the situation. With just a few steps, people who aren't terribly careful can exploit these systems. It's possible that you need to replace your Nissan key fob's battery if it's not functioning correctly. Most key fobs have rechargeable CR2025 or the CR2032 battery. They generally last around two years. If you're not sure how to change the battery, refer to your owner's manual for guidance. If your key fob isn't functioning because of a more serious issue, it might have to be replaced or programmed. These problems can be more complicated to fix than replacing a battery, and might require the assistance of an expert auto locksmith. replacement nissan keys specialize in repair and replacement of intelligent keys, and can provide you with a OEM intelligent key at a cheaper cost than the dealer. They can also visit your house, preventing you from having to leave the vehicle at a garage. They are available 24 hours a day, seven days a week. Remotes Some Nissan models come with a remote keyless system that uses an electronic key fob to unlock the door and/or start the engine. Having a spare key in case you misplace yours is highly recommended. A replacement key fob that functions will save you from having to pay for a tow as well as the cost of replacing your ignition keys. Fobs emit frequencies that communicate with the computer of the vehicle to perform a variety of tasks like locking and unlocking doors, activating trunk release or sounding a panic alarm. Explore our collection of Nissan key fobs for replacement to find the perfect one for your specific model and year. You can also order a pre-programmed fob for an even more affordable option. Just be sure to select the correct style, since they all look alike and could cause headaches if not compatible. Also, online sellers who offer a pre-programmed fob typically require evidence of ownership or registration to confirm authenticity. Be wary of sites which do not require this information and may be scams.