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Nissan Car Key Replacement Replacing a Nissan key fob battery is generally 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 match the one in your car. Transponder Keys Commonly found in newer vehicles Transponder keys typically have an RFID microchip within the key that transmits a unique number to the car every time it is placed in the ignition. It is designed to prevent theft by ensuring that only the right key is able to start the car. If you'd like to learn more about how this technology works and how it works, call your local locksmith or dealership for an explanation. When the transponder is placed in the ignition, the key sends a message to the chip within the engine control unit (ECU) of the vehicle. The ECU examines if the number on the key corresponds to the digital serial number of the ECU. If it does, the ECU will then release the immobilizer and allows the engine to begin. If the code is not compatible, the ECU will refuse to accept it and stop the engine from beginning. The keys are more expensive than traditional keys, but give you extra security. The cost of these keys is higher than traditional metal keys, but they provide more security. Many people ask if they can duplicate a transponder key for themselves. The answer is yes but it's best to leave the job to professional auto locksmiths. Besides, the process can vary based on the vehicle's make and model. Mechanical Keys Many older Nissan cars came with mechanical keys. These traditional keys made of steel did not come with remote functions, and were only capable of unlocking the doors and ignition cylinders on the car. If the key you have is damaged or broken, the case is damaged, a locksmith will generally replace the inside parts and make a new one that functions as new. A reputable and experienced auto locksmith is also able to cut you a new key at a much lower cost than the dealership will charge. There are various types of mechanical keys, each of which has their own distinct replacement procedure. Linear switches come with a linear actuation chart for example. This means that as you press the key down it will move a certain distance until it hits the stopper or activates an internal spring. When the key is pushed into the ignition the switch will send an alert to the car to start it up. Intelligent keys are equipped with a chip inside them that communicates with the vehicle's computer system. If you lose your key, it will need to be replaced with a brand new one that is programmed to work with the vehicle. This requires a more advanced key technology that is only available through a specialized locksmith for automobiles. It will cost more than a regular key replacement at the dealership. Key Fobs Since the mid 1990s, key fobs have become a standard in all cars. You can lock, unlock and arm your car's alarm system with the click of a switch. Many people believe that these systems are safe enough that only those with your key code can escape with your car. However, this isn't always the case. It's possible for less scrupulous people to take advantage of these systems with only a few simple steps. You may need to replace your Nissan key fob's battery in case it's not functioning correctly. Most key fobs use rechargeable CR2025 or CR2032 batteries, and they typically last for two years. Look up nissan micra key price for specific instructions if you're not sure how to replace the battery. If your key fob doesn't work due to a more significant issue, it might need to be replaced or programmed. These issues can be more difficult to repair than a simple battery replacement, and might require the assistance of an expert auto locksmith. Some companies specialize on replacing and repairing smart keys and can supply 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 headache of leaving your vehicle at a service center. They are open 24 hours a days, 7 days a weeks. Remotes There are some Nissan models that have a remote keyless entry system, which makes use of a key fob to unlock your door and/or start the engine. A spare key in case you misplace yours is highly recommended. A working replacement key fob could save you the expense of a tow to the dealership and the hefty fee to replace the ignition keys that you lost. Fobs emit a signal that communicates with the computer in the vehicle to complete a sequence of actions, including locking or unlocking the doors, activating the trunk release, or triggering the panic alarm. Browse our selection of Nissan key fobs and locate the best one to match your year and model. You can also purchase a preprogrammed key fob, which is a more affordable option. Make sure you select the correct style, as they all look alike and could cause confusion if they're not compatible. Additionally, online sellers selling a pre-programmed device typically require evidence of ownership or registration in order to verify legitimacy. Beware of sites that do not ask for this information and could be fraudulent.