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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 the one that came with your vehicle. Transponder Keys Transponder keys are commonly found in modern vehicles. They are equipped with an RFID microchip that transmits a unique car code when the key is put in the ignition. The idea behind this technology is to prevent theft by ensuring that only the right key is able to start the vehicle. If you'd like to know more about how this technology works, contact your local locksmith or dealer for a demonstration. When the transponder key is inserted in the ignition, it transmits an electronic signal to the chip in the engine control unit (ECU). The ECU examines if the number on the key is compatible with the serial number of the ECU. If it does it, the ECU is then able to disengage the immobilizer and permits the engine to start. If the code does not match it, the ECU will reject it and stop the engine from beginning. They're more expensive than the traditional metal keys, however, they are more secure. The cost of these keys is more expensive than traditional metal keys but they offer greater security. Many people wonder if they could copy a transponder keys at home – the answer is yes but it's best to leave the job to professional auto locksmiths. Additionally, the process could vary depending on your car's model and make. Mechanical Keys Many older Nissans 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. Locksmiths can replace the inner components of a damaged key or a damaged case and create a new key that functions like new. A reputable and certified auto locksmith can also cut you the key at a less cost than the dealer. There are several different types of mechanical key and each one has its own unique process for replacement. Linear switches, for instance are equipped with a linear actuation graph. This means that when you press the key down it will move certain distance until it reaches an obstruction or triggers an internal spring. When the key is inserted into the ignition, the switch will send an indication to the car to turn it up. Intelligent keys are equipped with an embedded chip that communicates with the computer system in your vehicle. When you lose your key it will have to be replaced by a new one that has been programmed to work with the vehicle. This requires more advanced key technology that is only accessible through a specialized locksmith for automobiles. It is more expensive than a standard key replacement at the dealership. Key Fobs Since the mid 1990s, key fobs have been a common feature in most cars. They let you unlock and lock the car's alarm with a pressing of a button. Many people believe that the systems are secure enough that only a person who knows your key code can drive off with your vehicle. Unfortunately, this isn't always true. With just a few steps, less scrupulous people could take advantage of these systems. If your Nissan's key fob isn't working as it should, you might need to replace the battery. The rechargeable CR2025 and CR2032 batteries that are found in all key fobs can last for around two years. Check the owner's manual for the correct procedure if unsure how to replace the battery. If your key fob won't turn on due to a larger issue, it might need to be replaced or programmed. These issues can be more complex than a simple replacement of the battery, and may require an auto locksmith's help. Some companies specialize on fixing and replacing intelligent keys and will provide you with a OEM intelligent key for a lower cost than the dealer. They are also able to be at your location, avoiding you the burden of having to leave your vehicle at a service center. They are also available all hours of the day, seven days a week. Remotes Some Nissan models come with a remote keyless technology that utilizes a keyfob to unlock the doors and/or start your engine. It is recommended that you have a spare in the event that yours gets lost. A key fob replacement that functions can help you avoid having to pay for a tow as well as the cost of replacing your lost ignition keys. Fobs emit frequencies that communicate with the car's computer to perform a variety of tasks such as locking and unlocking doors, activating trunk release or alarms that sound panic. Browse our selection of Nissan key fobs to find the best one for your specific model and year. You can also order an already-programmed fob to make it an even lower cost. Make nissan duplicate car keys to select the correct design, as many look similar and can cause problems if they are not compatible. Online sellers that provide preprogrammed keys usually require evidence of ownership or registration to confirm authenticity. Sites that do not require this information might be frauds.