Nissan Car Key Replacement
Replacing the Nissan key fob battery is typically 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 also require your key code which should be kept in a safe location and should match the one that came with your vehicle.
Transponder Keys
Transponder keys are commonly found in newer vehicles. They are equipped with an RFID microchip that emits a unique car number when the key is inserted into ignition. It is designed to guard against theft by ensuring that only the proper key can be used to start the vehicle. If you'd like to learn more about how this technology works call your local locksmith or dealership for demonstrations.
When the transponder is inserted into the ignition, the key sends an information to the chip within the engine control unit (ECU) of the vehicle. The ECU then checks to see whether the code on the key matches its own digital serial number. If it does, the ECU is then able to disengage the immobilizer and allows the engine to begin. If the code does not match, the ECU will reject it and stop the engine from beginning.
They cost more than traditional keys, but provide additional security. However car thieves have developed in the past and discovered ways around this anti-theft measure, so the extra cost is not enough to stop them completely.
Many people are wondering if they could copy a transponder keys for themselves. The answer is yes but it's better to leave it to a professional auto locksmith. The process can also vary dependent on the make and model of your vehicle.
Mechanical Keys

Many older Nissans had mechanical keys. The traditional keys made of metal didn't have remote functions, and were 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 can usually replace the inner components and make a replacement that works as good as new. A reputable and experienced auto locksmith can also make a new key for a much lower price than the dealership will charge.
There are several different types of mechanical key that each have their unique method of replacement. Linear switches for instance come with a linear-actuation graph. When you press the button down it will move until it comes to the stopper. When the key is put into the ignition the switch will send a 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 new one that is programmed to work with the vehicle. This requires a higher degree of key technology that is only available from an automotive locksmith that is specialized, and will cost you more than a standard replacement key at the dealership.
Key Fobs
Key fobs have been an essential feature in many cars since the latter part of the 1990s. You can lock, unlock and arm your car's alarm at the press of a button. The Keylab believe that these systems are so secure that only someone with your key code can leave your car. Unfortunately, this is not always true. It is possible for less cautious people to take advantage of these systems in just a few steps.
If your Nissan's key fob has stopped working as it should, you may require replacing the battery. The majority of key fobs utilize a rechargeable CR2025 or CR2032 battery, and typically last for two years. If you're not sure of how to replace the battery, consult your owner's manual for guidance.
If your key fob does not function due to a major issue, you may have to replace or program it. These problems can be more complicated to fix than an easy battery replacement and they may require the help of a professional auto locksmith. Certain locksmiths specialize in replacing and repairing smart keys, and can provide you with an OEM intelligent key at a price lower than the dealer. They are also able to come to your home and save you from having to leave the vehicle at a 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 utilizes an electronic key fob to unlock the doors and/or start your engine. Having a spare key in case you lose your key is highly recommended.
A functional replacement key fob can save you the expense of a tow to the dealership, as well as the high cost of replacing your lost ignition keys. Fobs emit frequencies that communicate with the computer of the vehicle to perform a series of tasks, including locking and unlocking doors or trunk release, and the sounding of a panic alarm.
Explore our collection of Nissan key fobs and locate the one that is right to match your year and model. You can also purchase one that is pre-programmed for an even more affordable option. Select the correct style as many of them look similar and can cause problems if not compatible. Online sellers that offer a preprogrammed key fob usually require proof of registration or ownership to verify legitimacy. Be wary of websites that don't require this information and may be scams.