Nissan Car Key Replacement
Replacing a Nissan key fob battery is generally an easy and quick 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 require your keycode, which you should keep in a safe location and should match the one in your car.
Transponder Keys
Commonly found in newer vehicles Transponder keys typically come with an RFID microchip inside the key which transmits a unique code to the car every time it is inserted into the ignition. It is designed to ensure that only the right key is able to start the engine and also prevent theft. Contact your local dealership or locksmith to see the demonstration of this new technology.
When the transponder is put into the ignition, the key transmits an electronic message to the chip that is inside the engine control unit (ECU) of the vehicle. TheKeyLab if the code on the key matches the serial number digital of the ECU. If it does, the ECU disables the immobilizer in order to allow the engine start. If the code doesn't in line, then the ECU will reject the signal and keep the engine from getting started.
They're more expensive than the traditional metal keys, but they provide greater security. However car thieves have evolved over time and have found ways around this security measure and so the additional cost is not enough to deter them entirely.
Many people ask if they can copy a transponder key at home - the answer is yes but it's better to leave it to professional auto locksmiths. The process can also vary depending on the brand and model of your vehicle.
Mechanical Keys
A lot of older Nissans had mechanical keys. These traditional metal keys didn't have remote functions, and were only able to unlock the doors and the ignition cylinders in the car. If the key you have is damaged or broken, the case is damaged, a locksmith will typically replace the internal parts and create a replacement that functions as new. A reputable and certified auto locksmith will also be able to cut a new key at a lower price than the dealership will charge.
There are a variety of kinds of mechanical keys, each of which has their own distinct replacement procedure. Linear switches are equipped with the ability to operate in a linear manner, for example. When you press the button down, it will move until it reaches a stopper. The switch will transmit the signal to start the car when the key is introduced into the ignition.
Intelligent keys contain chips that communicate with the computer system of the vehicle. If you lose your key, it will have to be replaced by a new key that is programmed for the vehicle. This requires a more sophisticated key technology, only available through a specialized locksmith for cars. It will cost more than a regular key replacement at the dealership.
Key Fobs
Key fobs have become a standard feature in most automobiles since the end of the 1990s. They allow you to unlock and lock the car's alarm at the push of a button. Many people think that the systems are secure enough that only someone who has access to your key code can steal your car. But that's not always the situation. It's possible for less scrupulous individuals to make use of these systems with just a few steps.
If your Nissan's key fob isn't working as it should, you may need to replace the battery. Most key fobs are powered by a rechargeable CR2025 or CR2032 battery, and typically last for two years. If you're not sure of how to replace the battery, check your owner's manual to learn more.

If your key fob isn't working due to a more significant problem, it may need to be replaced or programmed. These issues could be more complex than simply replacing the battery, and may require an auto locksmith's help. Some locksmiths specialize in replacing and repairing smart keys, and can provide you with an OEM intelligent key for a lower cost than the dealer. They can also visit your house, preventing you from having to leave the vehicle at a service center. They are available all hours of the day, all week.
Remotes
There are Nissan models that have a remote keyless entry system which uses a key fob to unlock your door and/or to start the engine. It is recommended that you have a spare in case yours gets lost.
A key fob replacement that functions can save you from having to pay for a tow as well as the cost of replacing your ignition keys. Fobs emit an electromagnetic signal that communicates with the vehicle's onboard computer to complete a sequence of tasks, such as locking or unlocking the doors and activating the trunk release, or triggering the panic alarm.
Explore our collection of Nissan key fobs and locate the right one for your model and year. You can also buy a pre-programmed key fob for an even lower cost. Be sure to choose the right style, as some look similar and can create headaches if they're not compatible. Online sellers that offer preprogrammed key fobs typically require evidence of registration or ownership to verify the legitimacy of the offer. Sites that do not ask for this information may be scams.