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Nissan Car Key Replacement Replacing a Nissan key fob battery is typically 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 also need 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 come with an RFID microchip that sends a unique code for the car when keys are inserted into the ignition. It is designed to prevent theft by ensuring that only the proper key is able to start the car. Contact your local dealership or locksmith for an example of this technology. When the transponder is inserted into the ignition, it sends an electronic message to the chip inside the engine control unit (ECU) of the vehicle. The ECU checks if the code on the key corresponds to the digital serial number of the ECU. If it does it, the ECU removes the immobilizer and permits the engine to start. If the code does not match it, the ECU will refuse to accept it and stop the engine from starting. The keys are more expensive than traditional keys, however they offer additional security. However car thieves have changed over time and found ways around this anti-theft measure and the additional cost won't deter them entirely. Many people wonder if you can duplicate a transponder key at home – the answer is yes however, it is best to leave it to professionals who can help you. The process can also vary dependent on the make and model of your vehicle. Mechanical Keys Many older Nissan automobiles came with mechanical keys. These traditional keys did not have remote functions and could only be used to unlock the doors of the car and the ignition cylinders. If the key you have is damaged or broken, the case is damaged, a locksmith will typically replace the internal parts and make a replacement that works like new. A licensed and reputable auto locksmith can also cut you the key at a less cost than a dealership. There are a variety of mechanical keys that each have their own unique process for replacement. Linear switches, like come with a linear-actuation graph. This means that as you press the key down it will move down a certain distance until it hits an obstruction or triggers an internal spring. When the key is inserted into the ignition, the switch will send an alert to the car to start it up. Intelligent keys are equipped with an embedded chip that communicates with the computer system of the vehicle. This means that when you lose your keys, it will have to be replaced with a brand new one that is programmed to work with your specific vehicle. This requires a more sophisticated key technology, which is only available through a specialized locksmith for automobiles. It is more expensive than a typical key replacement at the dealership. Key Fobs Key fobs have been a standard feature in most cars since the mid 1990s. You can lock, unlock and arm your car's alarm with the click of a switch. Many people think that the systems are safe enough that only those who knows your code is able to drive away with your car. However, replacement key for nissan micra isn't always the situation. In just a few easy steps, people who aren't terribly careful can exploit these systems. If your Nissan's key fob isn't functioning as it should, you might need to replace the battery. The rechargeable CR2025 and CR2032 batteries used in most key fobs last for about two years. If you're unsure of how to change the battery, refer to the owner's manual to get advice. If your key fob won't function because of a serious issue, you may need to replace or program it. These issues may be more complex than an easy replacement of the battery and may require assistance from an auto locksmith. Certain companies specialize in the repair and replacement of smart keys, and they can provide you with an OEM intelligent key for less than the dealership. They are also able to come to your home, preventing you from having to leave the vehicle at a repair center. They are also on-call 24 hours a day, all week. Remotes Some Nissan models come with a remote keyless technology that utilizes an electronic key fob to unlock the doors and/or start your engine. A spare key in case you lose yours is highly recommended. A key fob replacement that functions can save you from having pay for a tow and the expense of replacing your ignition keys. Fobs emit a signal that communicates with the computer in the vehicle to complete a series of tasks, such as locking or unlocking the doors and activating the trunk release, or triggering the alarm for panic. Shop our selection of Nissan key fobs replacements to find the perfect one for your specific model and year. You can also purchase a preprogrammed keyfob, which is a cheaper option. Choose the correct style since numerous look alike and may cause problems if they are not compatible. Also, online sellers who offer a pre-programmed device typically require proof of ownership or registration in order to verify authenticity. Websites that don't require this information might be scams.