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Replace Nissan Key Fob Batteries
If your Nissan key fob isn't responding to your commands, it's a sign that its battery is dying. This is a straightforward fix that the majority of people are able to do themselves.
If you want to change the battery, you can purchase a new one at a hardware store or refer to the owner's manual for the model you have.
Removing the Battery
The key fob that you have in your Nissan model has a built in battery that can eventually lose its charge. The key fob's battery can be replaced in a matter of minutes. You'll first need a CR2032 battery. It's a tiny coin cell battery that's often found in key fobs and is available at most convenience stores. To open the key fob, you'll also need a pair (latex or not) of gloves, as well as the small screwdriver flathead. Read the owner's manual for specific instructions and steps to follow before you begin.
Flip the fob upside down and look over the backside. You will notice a small latch that you need to release by pulling down. This will remove the mechanical key from the original position within the fob.
Next, insert the new battery and ensure it is oriented correctly. Close the fob after the battery has been installed and then press the two sides of the fob together. After completing this final 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 numerous features of your Nissan If everything is working correctly. It's recommended to re-program the key fob after replacing the battery to make sure it's functioning properly.
Replace the Transmitter
Your key fob serves as the "key" to so many of your car's most crucial functions, it can be a big blow if you misplace or damage it. A damaged or dead key fob could prevent you from locking and starting your vehicle.
It's a great idea to keep an extra key fob in case of emergency. Fortunately, the process for replacing your Nissan key fob is quite straightforward. The process of replacing the Nissan key fob can be quite easy. The KeyLab 'll require a new flathead screwdriver and the new battery to get rid of the old.
You'll also require a Panasonic CR2032 3V round battery (you can find them in multipacks that cost less than $5 USD). The battery is situated in the back half of the key fob. You'll require an incredibly small flathead screwdriver to gently separate the two halves. Make use of a flathead screwdriver or smaller flatheads to unbolt the clip on the top of the battery. Be sure to note its place of placement. Replace the battery and put the key fob back together, testing it to ensure that it works correctly.
Nissan Intelligent Keys will eventually wear out and need to be replaced just like any other electronic device. Guard your key fob from magnetic fields, water, and physical impacts. Be careful not to drop it or put too much pressure on the device.
Replacing the Key
If your Nissan key fob has gone out you won't be able to use it to unlock or start your vehicle. That's a problem for people who have to go to work in Detroit or to run errands near Dearborn, or have a night on the town close to Troy.
It's not difficult to replace the battery in your Nissan Smart Key. You can replace the battery at home or in the dealership. The average cost for a pack is $5 or less.
Flip the fob back and push the small catch at the back. This will trigger the mechanical emergency key. The emergency key won't allow you to start your vehicle but it will unlock the door.
Then you should look for a small slit on the top of the key fob casing. You can use a screwdriver to pry off the two pieces of the key fob. Once you've gained access to the battery within, pull it out and note of the position it is in. When you are ready to reassemble your key fob, slide in the new battery and then snap the two pieces of the case back together. Insert the mechanical key and your Nissan smartkey will work as normal.

Other Issues
Many modern vehicles are equipped with key fobs which allow the user to lock and start them without having keys for your car. To accomplish this the key fob makes use of a small transmitter to communicate with the car's computer system.
If your Nissan key fob doesn't work after you change the battery, there could be a number of reasons why. One possibility is that the new battery wasn't properly placed into the key fob. A reset of the key fob is also a possibility. This is an easy process which you can carry out at home using just a few simple tools.
For instance, you'll need a screwdriver, and preferably one with a flat-headed head, to open the key fob to remove the old battery. With a screwdriver, break the back of the keyfob open and insert the new batteries. After that, you'll need to reset the key fob so that it works with your vehicle.
You can easily program your Nissan key fob yourself since they're all user-programmable. You can usually do this by inserting the key fob into the ignition twice in five minutes. If this does not work then you should take your key fob to an auto locksmith or dealer to have it programmed. The cost of this will depend on the person you speak with and what kind of car you own.