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Replace Nissan Key Fob Batteries
If your Nissan key fob isn't responding properly to your commands, it's likely its battery is dead. It's a relatively easy repair that most people can fix themselves.
To change the battery, you can either purchase the new one at a hardware store or consult the owner's manual for the model you own.
Change the battery
The key fob in your Nissan model has a built-in battery that will eventually lose its charge. The battery for the key fob can be changed in a matter of minutes. You'll first need to purchase a CR2032 battery. It's a tiny coin cell battery that's often found in key fobs, and it can be found at all convenience stores. To open the key fob, you'll also require an appropriate pair (latex or not) of gloves, as well as the small screwdriver flathead. Refer to the owner's guide for detailed instructions and steps before starting.
After you have the new battery, take off the old one by flipping the fob over and looking at the backside. There will be a small catch that you have to release by pulling it down. This will release the mechanical key from its original position inside the fob.
Insert the new battery next and ensure it is properly aligned. Once the battery is inserted then close the fob and press the two sides together. After you've completed this last step make sure to test your key fob by pressing the unlock button, and then seeing what happens. You'll now be able to utilize the various features of your Nissan to determine if everything is working correctly. After changing the battery, it's a good idea to reset your key fob to ensure that it functions properly.
Replacing the Transmitter
Your key fob is the "key" for many of your vehicle's essential functions. It can be a devastating blow in the event that it's lost or damaged. A damaged or malfunctioning key fob will prevent you from locking or starting your car.
It's a smart idea to keep a spare key fob on for in the event of an emergency. The process of replacing your Nissan keyfob is quite simple. You'll need a new battery and a small screwdriver for removing the old one, but the replacement process is simple and should only take a few minutes.
You'll require a round Panasonic CR 2032 3V battery (you can typically find them in multipacks, for less than $5 USD). The battery is inside the back of the key fob. You'll need an incredibly small flathead screwdriver to gently split the two halves. Utilize a small flathead screwdriver to push the clip that is located at the top of the battery and pop it out, taking note of its location. Replace the battery and then assemble the key fob. Test nissan smart key replacement to make sure it works.
Nissan Intelligent Keys will eventually get worn out and require to be changed just like every other electronic device. To prevent this is a good idea to shield your key fob from water, magnetic fields and physical impacts So, be careful not to drop it or put too much pressure on it.
Replacing the Key
If your Nissan key fob dies or is damaged, you can't use it to unlock your car or to start it. This is a problem for those who have to go to work in Detroit or run errands in Dearborn, or have an evening on the town close to Troy.
The good news is that the battery inside your Nissan smart key isn't a problem to replace. You can do it at home or at the dealership, and you'll typically find a pack of them for $5 or less at a hardware store.
Start by flipping the fob over and then pushing a small catch on the back. This will release the emergency mechanical key inside. While you won't have the ability to use the emergency key to start your car, it will let you open the door.
Next, look for a small opening on the top of the key fob casing. You can use a screwdriver to pry away the two parts of the key fob. Once you've accessed the internal battery, remove it and take note of its location. When you're prepared to reassemble the key fobs, slide the new battery into its place and then snap the two pieces of the case together. Then put in the mechanical key, and your Nissan smart key will be able to function as normal.
Other Problems
A lot of modern cars have key fobs, which let you to lock them and start them without the need for a physical key. The key fob uses a transmitter to communicate with the computer system of the car.
There are many possible reasons that your Nissan key fob won't function after replacing the battery. One possibility is that the new battery wasn't properly fitted into the key fob. A reset of the key fob is also a possibility. This is a simple process that you can complete at home with just a few simple tools.

You'll need, for example an screwdriver with a flat-headed tip to take out the battery that was in the key fob. With a screwdriver, pull the back of the keyfob open and insert the new batteries. In the end, you'll have to change the programming of the key fob to ensure that it can work with your vehicle.
You can easily program your Nissan key fob by yourself, since they can all be programmed by a user. You can usually do this by inserting the key fob into the ignition two times within five minutes. If this doesn't work, you can take your key fob in to a dealer or auto locksmith to be programmed. The cost of this will differ based on the person you call and the type of vehicle you own.