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 require your key code, which should be kept in a secure location and must match the one that came with your car.
Transponder Keys
Transponder keys are typically found in modern vehicles. They come with an RFID microchip that sends a unique code for the car when keys are inserted into ignition. It is designed to guard against theft by ensuring that only the right key is able to start the car. If you'd like to find out more about the technology's working and how it works, call your local locksmith or dealer for an explanation.
When the transponder key is inserted into the ignition, it sends an electrical signal to the chip in the vehicle's engine control unit (ECU). The ECU determines if the code on the key is compatible with the serial number of the ECU. If it does then the ECU is then able to disengage the immobilizer, allowing the engine to start. If the code does not match then the ECU will reject it and prevent the engine from starting.
These keys are more expensive than traditional metal keys but offer additional security. The cost of these keys is higher than traditional keys made of metal however, they provide greater security.
Many people are wondering if they could copy a transponder keys by themselves. The answer is yes but it's best to leave the job to professional auto locksmiths. The process may differ dependent on the make and model of your car.
Mechanical Keys
Many older Nissans came with mechanical keys. These traditional metal keys did not come with remote functions, and were only able to unlock the doors and the ignition cylinders of the vehicle. If the key you have is damaged or broken, the case is damaged, a locksmith can usually repair the internal parts and make a new one that functions as new. A reputable and experienced auto locksmith can also cut the key at a less cost than a dealership.
There are various types of mechanical keys that each have its own unique replacement procedure. Linear switches, like are equipped with a linear actuation graph. When you press the key down, it will move until it hits the stopper. The switch will send the signal to start the car when the key is placed in the ignition.
Intelligent keys are equipped with the chip that connects to the computer system of the 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 your particular vehicle. This requires a higher level of technology in the key that is only available from an automotive locksmith who is specifically trained, and will cost you more than a standard replacement key you can purchase from the dealership.
G28
Since the mid 1990s, key fobs are a standard in almost all cars. You can lock, unlock and arm your car's security alarm with the click of a switch. Many people believe that these systems are secure enough that only a person who knows your key code is able to drive away with your vehicle. But this isn't always true. In a few simple steps, people who aren't terribly careful could take advantage of these systems.
If your Nissan's key fob doesn't function as it should, you may require replacing the battery. The rechargeable CR2025 and CR2032 batteries that are used in the majority of key fobs last for about two years. Check the owner's manual for specific instructions if you're not sure how to replace the battery.
If your key fob doesn't function due to a significant issue, you might need to replace it or program it. These issues can be more difficult to resolve than a simple battery replacement, and they might require the assistance of an expert auto locksmith. Certain companies specialize in fixing and replacing intelligent keys and can supply you with a OEM intelligent key at a cheaper cost than the dealer. They can also come to you, saving you the hassle of having to leave your vehicle at an establishment for service. They are also on-call all hours of the day seven days a week.
Remotes

Certain Nissan models come with a remote keyless system that uses an electronic key fob to unlock the door and/or start your engine. It is recommended that you have a spare for the event that yours is lost.
A key fob replacement that works can save you from having to pay for towing and the cost of replacing your ignition keys. Fobs emit an electromagnetic signal that communicates with the car's computer to complete a series of tasks, such as locking or unlocking the doors or trunk release, or sounding the alarm to alert you to a panic.
Explore our collection of Nissan key fobs and locate the right one for your year and model. You can also order an already-programmed fob to make it an even cheaper option. Make sure you select the correct style, since some look similar and can cause headaches if not compatible. Online sellers that provide a preprogrammed keyfob typically require evidence of ownership or registration to prove legitimacy. Websites that do NOT require this information could be a scam.