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Nissan Car Key Replacement 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 need your key code, which you should keep safe and should be the same as that of your vehicle. Transponder Keys Transponder keys are typically used in newer cars. They feature an RFID microchip that emits a unique car number when the key is put in ignition. It is designed to prevent theft by making sure that only the correct key can be used to start the car. If you'd like to know more about how this technology works get in touch with your local locksmith or dealership for a demonstration. When the transponder key is inserted into the ignition, it sends an indication to the chip within the vehicle's engine control unit (ECU). The ECU is then able to determine whether or not the number in the key is in line with its digital serial number. If it does, the ECU disengages the immobilizer so that the engine can start. If the code does not matched, then the ECU will refuse to accept the signal and stop the engine from starting. They are more expensive than traditional keys, however they offer additional security. However, car thieves have adapted in the past and discovered ways around this anti-theft measure and the additional cost will not deter them entirely. Many people ask if it is possible to copy the transponder keys yourself. The answer is yes. However, it's preferential to leave it up to auto locksmiths. The procedure can vary depending on the make and model of your vehicle. Mechanical Keys Many older Nissan automobiles were equipped with mechanical keys. replacement car keys nissan didn't have remote functions, and were able to unlock the doors and the ignition cylinders in the car. If your key is damaged or breaks, the case is damaged, a locksmith will typically replace the internal parts and create a replacement that works as good as new. A reputable and certified auto locksmith is also able to cut a new key at a lower cost than the dealership charge. There are many different kinds of mechanical key each with its own unique process for replacement. Linear switches are equipped with the ability to operate in a linear manner, for example. This means that when you push the key down it will move down a certain distance until it reaches the stopper or activates an internal spring. When the key is put into the ignition, the switch will send a signal to the car to start it up. Intelligent keys have a chip in them that communicates with the vehicle's computer system. This means that if you lose your keys, it must be replaced with a new one that is programmed to work with the specific vehicle. This requires a higher level of technology in the key that is only available from a specialized automotive locksmith, and will cost you more than a regular replacement key at the dealership. Key Fobs Since the end of the 1990s, key fobs have been a common feature in the majority of cars. You can unlock, lock or arm your car's alarm at the click of a switch. Many people assume that these systems are secure enough to ensure that only the person who has access to your key code is able to drive away with your car. However, this isn't always the case. With just a few steps, people who aren't as meticulous can take advantage of these systems. It's possible that you need to replace your Nissan key fob's batteries if they aren't working properly. Most key fobs have rechargeable CR2025 and CR2032 battery, and usually last about two years. Check the owner's manual for directions if you're unsure how to replace the battery. If your key fob doesn't work because of a more serious issue, it might need to be replaced or programmed. These issues could be more complex than an easy replacement of the battery and may require the assistance of an auto locksmith. Some companies specialize in repairing and replacing smart keys, and they can provide you with 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 garage. They are open all hours of the day, 7 days a weeks. Remotes Certain Nissan models have a remote keyless system that makes use of a keyfob to open the doors and/or start your engine. A spare key in case you misplace your key is highly recommended. A functional replacement key fob will save you the cost of an extra trip to the dealership, as well as the high cost of replacing your lost ignition keys. Fobs emit frequencies that communicate with the computer of the vehicle to perform a series of tasks, including locking and unlocking doors and trunk release, as well as the sounding of a panic alarm. Browse our assortment of Nissan key fobs for replacement to find a match to your particular model and year. You can also buy a pre-programmed key fob which is a more affordable alternative. Just be sure to select the correct style, as some look similar and can cause problems if they are not compatible. Also, online sellers who offer an already-programmed fob usually require documents of ownership or registration to confirm authenticity. Be wary of sites that do not require this information and may be fraudulent.