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Nissan Car Key Replacement Nissan key fob batteries are simple 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 need your key code which should be kept in a safe location and must match the one that came with your vehicle. Transponder Keys Commonly found in newer vehicles, transponder keys come with an RFID microchip inside the key that transmits a specific code to the car every time it is placed in the ignition. The KeyLab is designed to ensure that only the correct key can be used to start the engine and prevent theft. If you want to know more about how this technology works call your local locksmith or dealer to schedule an explanation. When the transponder is put into the ignition, the key sends a message to the chip inside the engine control unit (ECU) of the vehicle. The ECU then examines whether the code on the key matches with its own digital serial number. If it does, then the ECU removes the immobilizer to allow the engine to start. If the code isn't compatible, the ECU will block the engine from starting. The keys are more expensive than traditional metal keys but provide added security. However car thieves have changed to the changing times and have found ways around this anti-theft measure and the additional cost won't keep them from doing anything. Many people wonder if they can copy transponder keys themselves – the answer is yes but it's best to leave it to professionals who can help you. The procedure may also differ depending on the brand and model of your car. Mechanical Keys Many older Nissan cars came with mechanical keys. These traditional keys did not have remote functions and could only be used to open the doors of the vehicle and the ignition cylinders. Locksmiths can repair the inner components of a key that is damaged 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 lower cost than the dealership. There are a variety of kinds of mechanical keys that each have its own unique replacement method. Linear switches are equipped with the ability to operate in a linear manner, for example. This means that as you push the key down it will move down a certain distance until it reaches the stopper or triggers an internal spring. When the key is put into the ignition, the switch will send an indication to the car to turn it up. Intelligent keys are equipped with a chip in them that communicates with the computer system of the vehicle. When you lose your key it must be replaced by a new one that is programmed to work with the vehicle. This requires a more sophisticated key technology that is only available through a specialized automotive locksmith. It is more expensive than a standard replacement key at the dealership. Key Fobs Key fobs have become a standard feature in most cars since the latter part of the 1990s. You can unlock, lock or arm your car's security alarm with the push of a button. Many people believe that these systems are so secure that only someone with your key code can escape with your car. Unfortunately, this is not always true. It is possible for less cautious individuals to profit from these systems with a few easy steps. If your Nissan's key fob isn't working as it should, you may require replacing the battery. The majority of key fobs utilize a rechargeable CR2025 or CR2032 batteries, and they generally last between two and three years. If you're not certain how to replace the battery, refer to the owner's manual for instructions. If your key fob isn't working due to a larger issue, it might have to be replaced or programmed. These issues can be more complicated to fix than an easy battery replacement and they might require the assistance of a professional auto locksmith. Some companies specialize in the repair and replacement of smart keys, and they are able to offer you an OEM smart key at a much lower price than the dealership. They can also deliver the key to your home, saving you from having to leave the vehicle at a repair center. They are open 24/7 seven days a week. Remotes There are some Nissan models that come with a remote keyless entry system, which uses an electronic key fob to unlock your door and/or start your engine. It is recommended that you have a spare for the event that yours gets lost. A working replacement key fob will help you avoid the cost of an expensive tow to the dealer, as well as the hefty fee to replace your lost ignition keys. Fobs emit an electromagnetic signal that communicates with the vehicle's onboard computer to complete a sequence of tasks, such as locking or unlocking the doors as well as activating the trunk release, or sounding the alarm to alert you to a panic. Browse our assortment of Nissan replacement key fobs to find the right one to your specific model and year. You can also purchase a pre-programmed fob for an even cheaper option. Choose the correct style since many look alike and could create problems if not compatible. Online sellers who provide preprogrammed keys typically require proof of registration or ownership to verify the legitimacy of the offer. Be wary of sites that don't require these details and could be fraudulent.