Nissan Car Key Replacement Replacing the Nissan key fob battery is usually an easy and simple task. 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 require your keycode, which you should keep safe and should be the same as that of your car. Transponder Keys Often found in newer cars transponder keys usually come with an RFID microchip within the key that transmits a specific code to the car when it is inserted into the ignition. It is designed to ensure that only the right key can start the engine and also prevent theft. Contact your local dealership or locksmith to see the demonstration of this new technology. When the transponder key is inserted in the ignition, it sends an indication to the chip within the engine control unit (ECU). The ECU checks if the code on the key corresponds to the digital serial number of the ECU. If it does, the ECU disengages the immobilizer so that the engine can start. If the code isn't compatible to the code, then the ECU will refuse to accept the signal and stop the engine from beginning. They're more expensive than traditional metal ones, however, they are more secure. However car thieves have evolved to the changing times and have found ways to get around this anti-theft system therefore the extra cost will not keep them from doing anything. Many people wonder if they can copy a transponder key for themselves. The answer is yes but it's best to leave the job to professional auto locksmiths. The procedure may also differ dependent on the make and model of your vehicle. Mechanical Keys Many older Nissan automobiles came with mechanical keys. The traditional keys made of metal did not come with remote functions and were used to unlock the doors of the car and the ignition cylinders. If your key breaks or the case is damaged, a locksmith will typically replace the internal parts and create a replacement that operates like new again. A reputable, experienced and reputable auto locksmith can also make a new key at a less cost than the dealership charge. There are many different kinds of mechanical keys that each have their unique method of replacement. Linear switches feature a linear actuation chart for example. This means that as you push the button down it will move a certain distance until it reaches the stopper or triggers an internal spring. The switch will send the signal to start the car when the key is introduced into the ignition. Intelligent keys have a chip in them that communicates with the computer system in your vehicle. This means that when 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 a higher degree of key technology that is only available through a specialist automotive locksmith and will cost you more than a standard replacement key you can purchase from the dealership. Key Fobs Key fobs have been a standard feature in most automobiles since the end of the 1990s. They let you unlock, lock and arm the car's alarm with a pressing of a button. Many people think that these systems are secure enough that only a person who knows your code is able to drive away with your vehicle. However, this isn't always the situation. In just a few easy steps, people who aren't as meticulous could take advantage of these systems. If your Nissan's key fob has stopped working as it should, you may need to replace the battery. The rechargeable CR2025 as well as CR2032 batteries that are used in the majority of key fobs last about two years. Refer to the owner's guide for specific instructions if you're unsure how to replace the battery. If your key fob won't work because of a serious issue, you may have to replace it or program it. These issues can be more complicated than replacing the battery and could require the assistance of an auto locksmith. Some locksmiths specialize in replacing and repairing smart keys and will provide you with a OEM intelligent key at a price lower than the dealer. They can also deliver to you, thereby saving you the burden of having to leave your vehicle at the service center. They are available all hours of the day, seven days a week. Remotes Some Nissan models come with a remote keyless system that makes use of keys to open the doors and/or start your engine. A spare key in case you misplace yours is highly recommended. A replacement key fob that functions can help you avoid having to pay for a tow as well as the expense of replacing your lost ignition keys. Fobs emit a sound that communicates with the car's onboard computer to complete a sequence of actions, including locking or unlocking the doors and activating the trunk release, or sounding the alarm that sounds the panic alarm. Explore our collection of Nissan key fobs to find the perfect one to match your year and model. You can also purchase an already-programmed key fob which is a less expensive alternative. Be sure to choose the correct style, since many look similar and can create headaches if they're not compatible. Additionally, online sellers that offer an already-programmed fob usually require the proof of ownership or registration in order to verify authenticity. Sites that do not require this information might be frauds.