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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 need your key code, which you must keep in a safe location and should be the same as that of your car.

Transponder Keys

Transponder keys are typically found in newer vehicles. They come with an RFID microchip that emits a unique car number when the key is inserted into ignition. It is designed to ensure that only the correct key can be used to start the engine and prevent theft. Contact your local dealership or locksmith to view an example of this technology.

When the transponder is inserted into the ignition, the key transmits an electronic message to the chip that is inside the engine control unit (ECU) of the vehicle. The ECU checks if the code on the key is compatible with the serial number of the ECU. If it does, the ECU will then release the immobilizer, allowing the engine to begin. If the code is not matched and the ECU will block the signal and prevent the engine from starting.

They're more expensive than traditional keys made of metal however, they are more secure. The cost of these keys is higher than traditional metal keys however they offer more security.

Many people are wondering if they can copy a transponder key themselves - the answer is yes, but it's best to leave it to a professional auto locksmith. Besides, the process can differ based on your vehicle's make and model.

Mechanical Keys

A lot of older Nissans had mechanical keys. These keys were made of metal and did not come with remote functions, and were 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 can generally replace the inside components and make a replacement that works as good as new. A reputable and experienced auto locksmith can also cut a key for a lower cost than a dealership.

There are many different kinds of mechanical keys, and each has its distinct method of replacement. Linear switches, like, have a linear actuation graph. This means that when you push the key down it will move certain distance until it hits the stopper or triggers an internal spring. The switch will transmit the signal to start the car when the key is inserted into the ignition.

Intelligent keys are equipped with an embedded chip that communicates with the vehicle's computer system. If you lose your key, it must be replaced with a fresh key that is programmed for the vehicle. This requires more advanced key technology, only available through a specialized automotive locksmith. It is more expensive than a standard key replacement at the dealership.

Key Fobs

Since the end of the 1990s, key fobs are a standard in the majority of automobiles. You can lock, unlock and arm your car's alarm system with the push of a button. Many people believe that these systems are so secure that only a person with your key code could drive away with your car. Unfortunately, this isn't always the case. In just a few easy steps, people who aren't as meticulous could take advantage of these systems.

You may need to replace your Nissan key fob's battery if it's no longer functioning correctly. The rechargeable CR2025 or CR2032 batteries found in most key fobs last about two years. Refer to the owner's guide for the correct procedure if not sure how to change the battery.

If your key fob isn't functioning due to a larger issue, it might need to be replaced or programmed. These problems may be more complex than a simple replacement of the battery and could require assistance from an auto locksmith. Certain companies specialize in the repair and replacement of smart keys, and can offer you an OEM intelligent key for cheaper than the dealership. They can also come to your home, preventing you from having to leave your vehicle at a service center. They are available all hours of the day, seven days a week.

Remotes

Some Nissan models have a remote keyless technology that utilizes keys to open the door and/or to start your engine. It is recommended to have a spare just in case yours is lost.

A replacement key fob that works could help you avoid having to pay for a tow and the expense of replacing your lost ignition keys. Fobs emit a sound that communicates with the computer in the vehicle to complete a series of actions, including locking or unlocking the doors or trunk release, or sounding the alarm that sounds the panic alarm.

Shop our selection of Nissan key fobs replacements to find the right one to your particular model and year. You can also buy a preprogrammed key fob, which is a less costly alternative. Choose the right style as many of them look similar and can cause problems if not compatible. Also, online sellers who offer a pre-programmed fob typically require evidence of ownership or registration to prove the legitimacy of the product. Beware of sites that don't require this information and could be scams.