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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 require your keycode, which you should keep in a safe location and should be the same as that of your car. Transponder Keys Transponder keys are commonly found in modern vehicles. They come with an RFID microchip that sends a unique code for the car when the key is inserted into the ignition. It is designed to ensure that only the correct key can be used to start the engine and stop theft. Contact your local dealer or locksmith for the demonstration of this new technology. When the transponder keys are inserted into the ignition, it transmits an electrical signal to the chip within the engine control unit (ECU). The ECU will then check to see 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 start. If the code doesn't match it, the ECU will block the engine from beginning. They're more expensive than traditional keys made of metal, however they offer greater security. However car key locksmith have evolved over time and have found ways to circumvent this anti-theft device, so the extra cost is not enough to stop them completely. Many people wonder if it is possible to copy the transponder keys yourself. The answer is yes. But, it's better to leave it to auto locksmiths. The procedure may also differ dependent on the make and model of your vehicle. Mechanical Keys Many older Nissans were equipped 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 of the vehicle. A locksmith can replace the inside parts of a damaged key or damaged case to create a new key that functions exactly like new. A reputable and certified auto locksmith can also cut keys at a lower cost than a dealership. There are various kinds of mechanical key that each have their own unique process for replacement. Linear switches for instance come with a linear-actuation graph. 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. The switch will send the signal to start the car once the key is put into the ignition. Intelligent keys are equipped with chips that communicate with the computer system of the vehicle. This means that if you lose your key it must be replaced with a new one that is programmed to work with your particular vehicle. This requires a higher level of key technology, which is only available through a specialized automotive locksmith, and will cost you more than a regular replacement key from the dealership. Key Fobs Since the late 1990s, key fobs are a standard in most cars. You can unlock, lock or arm your car's alarm system with the click of a switch. Many people believe that these systems are safe enough that only those with your keycode can leave your car. But that's not always the case. It is possible for less cautious people to take advantage of these systems in a few easy steps. If your Nissan's key fob isn't working as it should, you may require replacing the battery. The rechargeable CR2025 as well as CR2032 batteries that are used in the majority of key fobs will last around two years. If you're not sure how to replace the battery, refer to your owner's manual to learn more. If your key fob isn't work because of a serious issue, you may need to replace or program it. These issues may be more complicated than a simple replacement of the battery and may require assistance from an auto locksmith. Some locksmiths specialize in fixing and replacing intelligent keys and can supply you with an OEM intelligent key at a price lower than the dealer. They can also deliver to you, thereby saving you the burden of having to leave your vehicle at an establishment for service. They are available 24 hours a days all week long. Remotes Some Nissan models have a remote keyless technology that utilizes keys to open the doors and/or start your engine. It is recommended that you have a spare in the event that yours is lost. A key fob replacement that functions can save you from having pay for a tow as well as the cost of replacing your ignition keys. Fobs emit frequencies that communicate with the computer in your vehicle to perform a series of tasks such as locking and unlocking doors or trunk release, and sounding panic alarm. Browse our selection of Nissan key fobs and choose the right one for your model and year. You can also purchase a pre-programmed key fob which is a less costly alternative. Select the correct style as numerous look alike and may cause problems if not compatible. Also, online sellers offering a pre-programmed fob typically require evidence of ownership or registration to confirm authenticity. Beware of sites that don't require these details and could be scams.