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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 require your key code, which you should keep in a safe place and should match the one in your vehicle.


Transponder Keys

Most often found in modern cars transponder keys usually contain an RFID microchip within the key that transmits a unique code to the car whenever it is put into the ignition. It is designed to ensure that only the right key can be used to start the engine and stop theft. Contact your local dealer or locksmith for a demonstration of this technology.

When the transponder key is inserted in the ignition, it sends an electrical signal to the chip inside the vehicle's engine control unit (ECU). The ECU determines if the code on the key corresponds to the digital serial number of the ECU. If it does, then the ECU disengages the immobilizer so that the engine can start. If the code doesn't match with the code, the ECU will reject it and stop the engine from beginning.

The keys are more expensive than traditional keys, however they give you extra security. However car thieves have developed over time and found ways to circumvent this anti-theft device, so the extra cost will not dissuade them completely.

Many people wonder if you can copy a transponder key by themselves. The answer is yes but it's better to leave the job to professional auto locksmiths. The process can also vary depending on the brand and model of your car.

Mechanical Keys

Many older Nissans came with mechanical keys. These traditional keys made of steel did not have remote functions, and were only capable of unlocking the doors and ignition cylinders on the car. Locksmiths can repair the internal components of a damaged key or a damaged case to create a replacement key that functions exactly like new. A reputable and certified auto locksmith can also cut keys at a cheaper price than the dealership.

There are many different kinds of mechanical key each with its own unique process for replacement. Linear switches for instance have a linear actuation graph. This means that, as you push the key down it will move certain distance until it reaches the stopper or triggers an internal spring. When the key is pushed into the ignition, the switch will send a signal to the car to start it up.

Intelligent keys contain a chip inside them that communicates with the computer system in your vehicle. If you lose your keys, it will need to be replaced with a new one that is programmed to work with the vehicle. This requires a more advanced key technology that is only available through a specialist locksmith for automotive. 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. You can unlock, lock and arm your car's alarm at the press of a button. Many people believe that these systems are secure enough that only someone who has your key code will be able to drive away with your car. But that's not always the case. In a couple of easy steps, less scrupulous people can take advantage of these systems.

If your Nissan's key fob isn't functioning as it should, you might require replacing the battery. Most key fobs are powered by a rechargeable CR2025 or CR2032 battery, and typically last for two years. Refer to the owner's guide for directions if you're unsure how to replace the battery.

If your key fob doesn't function due to a major issue, you might need to replace it or program it. These problems can be more difficult to resolve than replacing a battery, and they might require the assistance of a professional auto locksmith. Some locksmiths specialize in the repair and replacement of smart keys, and they are able to provide you with an OEM smart key at a much lower price than the dealership. They can also be at your location, avoiding you the inconvenience of having to drop off your vehicle at a service center. They are available all hours of the day all week.

Remotes

Some Nissan models have a remote keyless technology that utilizes an electronic key fob to unlock the door and/or to start your engine. It is recommended that you have a spare in the event that yours gets lost.

A replacement key fob that functions will save you from having to pay for a tow or the expense of replacing your lost ignition keys. Fobs emit an electromagnetic signal that communicates with the car's onboard computer to complete a series of tasks, like locking or unlocking the doors, activating the trunk release, or sounding the alarm for panic.

Browse our assortment of Nissan key fobs replacements to find a match for your specific model and year. You can also get a pre-programmed key fob which is a more affordable option. Choose the correct style since many look alike and could cause problems if not compatible. Additionally, online sellers that offer an already-programmed fob usually require proof of ownership or registration to prove authenticity. replacement key nissan of sites that do not ask for this information and could be scams.