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Nissan key fob batteries are easy to replace. 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 place and should match the one that came with your car.

Transponder Keys

Commonly found in newer vehicles transponder keys usually come with an RFID microchip within the key that transmits a unique code to the car every time it is placed in the ignition. It is designed to ensure that only the right key is able to start the engine and prevent theft. Contact your local dealership or locksmith to see the demonstration of this technology.

When the transponder is inserted into the ignition, the key sends an electronic message to the chip within the engine control unit (ECU) of the vehicle. The ECU then examines whether or not the code in the key matches its own digital serial number. If it does then the ECU is then able to disengage the immobilizer, allowing the engine to begin. If the code isn't matched and the ECU will reject the signal and keep the engine from beginning.

The keys are more expensive than traditional keys, but offer additional security. The cost of these keys is higher than traditional metal keys however, they provide greater security.

Many people are wondering if it is possible to duplicate the transponder key themselves. The answer is yes. However, it's preferential to leave it up to auto locksmiths. The procedure may also differ dependent on the make and model of your car.

Mechanical Keys

Many older Nissans came with mechanical keys. These keys were made of metal and did not have remote functions, and were able to unlock the doors and the ignition cylinders in the car. If your key breaks or the case is damaged, a locksmith will generally replace the inside parts and create a replacement that operates like new again. A reputable and certified auto locksmith can also cut you keys at a cheaper cost than a dealership.

There are many different kinds of mechanical keys that each have their particular method for replacement. Linear switches are equipped with an actuation chart that is linear, for instance. This means that as you push the switch down, it will move a certain distance until it hits the stopper or triggers an internal spring. The switch will send a signal to start the car when the key is put into the ignition.

Intelligent keys are equipped with a chip in them that communicates with the computer system in your vehicle. This means that if you lose your key it will need to be replaced with a brand new one that is programmed to work with the specific vehicle. This requires a more advanced key technology, only available through a specialist automotive locksmith. It will cost more than a standard key replacement nissan car key at the dealership.

Key Fobs

Key fobs have been an essential feature in many cars since the late 1990s. You can unlock, lock and arm your car's security alarm with the touch of a button. Many people believe that these systems are secure enough that only someone with your key code could take off with your car. Unfortunately, this is not always true. In a couple of easy steps, even the most sloppy of people can take advantage of these systems.

If your nissan smart key replacement's key fob doesn't function as it should, you might need to replace the battery. Most key fobs use rechargeable CR2025 or the CR2032 battery, and they usually last about two years. Look up the owner's manual for instructions if you are uncertain about how to replace the battery.

If your key fob doesn't work due to a larger issue, it could need to be replaced or programmed. These issues can be more complex than replacing the battery and could require an auto locksmith's help. Certain companies specialize in replacing and repairing intelligent keys, and can provide you with an OEM intelligent key at a lower price than the dealer. They can also be at your location, avoiding you the hassle of having to leave your vehicle at an auto repair shop. They are available 24 hours a days all week long.

Remotes

There are Nissan models that have a remote keyless entry system that uses an electronic key fob to unlock your door and/or start the engine. It is recommended to have a spare in the event that yours gets lost.

A replacement key fob that functions can help you avoid having to pay for a tow or the expense of replacing your ignition keys. Fobs emit a signal that communicates with the vehicle's onboard computer to complete a series of tasks, like locking or unlocking the doors, activating the trunk release, or triggering the alarm that sounds the panic alarm.

Browse our assortment of nissan keys replacement car key nissan key fobs to find the right one to your specific model and year. You can also buy a pre-programmed key fob for the same price. Be sure to choose the correct style, as several look similar and may cause problems if they are not compatible. Also, online sellers offering a pre-programmed device typically require the proof of ownership or registration to prove legitimacy. Websites that don't ask for this information may be a scam.