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Nissan Car Key Replacement Replacing the Nissan key fob battery is generally an easy and straightforward 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 also require your key code, which must be stored in a secure location and should match the one that came with your vehicle. Transponder Keys Transponder keys are often found in more modern vehicles. They are equipped with an RFID microchip that transmits a unique vehicle code when the key is inserted into ignition. It is designed to prevent theft by ensuring that only the right key can be used to start the car. If you'd like to know more about the technology's working call your local locksmith or dealership to schedule demonstrations. When the transponder is inserted into the ignition, the key transmits an information to the chip that is 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 is then able to disengage the immobilizer and allows the engine to begin. If the code is not compatible with the code, the ECU will refuse to accept it and stop the engine from beginning. They are more expensive than traditional keys made of metal however, they are more secure. However car thieves have evolved to the changing times and have found ways around this anti-theft measure, so the extra cost is not enough to keep them from doing anything. Many people wonder if it is possible to copy the transponder-key by yourself. The answer is yes. But, it's better to leave it to auto locksmiths. The procedure may also differ according to the make and model of your car. Mechanical Keys Many older Nissan cars came with mechanical keys. These traditional metal keys didn't have remote functions, and were only able to unlock the doors and ignition cylinders of the car. If your key breaks or the case is damaged, a locksmith can typically replace the internal parts and make a replacement that works as good as new. A qualified and reputable auto locksmith can also cut keys at a cheaper cost than the dealership. There are many different kinds of mechanical keys each with its unique method of replacement. Linear switches, like have a linear actuation graph. When you press the button down, it will move until it comes to a stopper. When the key is inserted into the ignition, the switch will send an electronic signal to the car to turn it up. Intelligent keys have an embedded chip that communicates with the vehicle's computer system. If you lose your key, it will have to be replaced with a brand new one that has been programmed to work with the vehicle. This requires a higher degree of technology for keys that is only available from an automotive locksmith who is specifically trained, and will cost more than a regular replacement key at the dealership. Key Fobs Since the end of the 1990s, key fobs have been a common feature in the majority of cars. You can unlock, lock or arm your car's alarm with the click of a switch. Many people believe that these systems are secure enough that only someone with your key code could take off with your car. But that's not always the case. It's possible for less scrupulous individuals to profit from these systems with the simplest of steps. If your Nissan's key fob isn't working as it should, you might need to replace the battery. Most key fobs have a rechargeable CR2025 or CR2032 batteries, and they typically last for two years. Consult your owner's guide for instructions if you are unsure how to replace the battery. If your key fob won't turn on due to a more significant issue, it could need to be replaced or programmed. These issues are more difficult to repair than the simple replacement of batteries, and may require the help of a professional auto locksmith. nissan car keys specialize on replacing and repairing smart keys, and can provide you with a OEM intelligent key for a lower cost than the dealer. They are also able to come to you, saving you the hassle of having to leave your vehicle at the service center. They are also on-call all hours of the day seven days a week. Remotes There are Nissan models that come with a remote keyless entry system, which utilizes keys to unlock your door and/or start your engine. Having a spare key in case you lose your key is highly recommended. A functioning replacement key fob could save you the expense of a tow to the dealership and the hefty fee to replace your lost ignition keys. Fobs emit a signal that communicates with the car's computer to complete a sequence of actions, including locking or unlocking the doors, activating the trunk release, or sounding the alarm to alert you to a panic. Shop our selection of Nissan key fobs for replacement to find a suitable fob to your specific model and year. You can also order a pre-programmed fob for an even cheaper option. Choose the correct style since numerous look alike and may cause problems if they are not compatible. Also, online sellers who offer a pre-programmed fob typically require proof of ownership or registration to prove legitimacy. Websites that do not require this information might be scams.