Replace Nissan Key Fob Batteries
If your Nissan keyfob doesn't respond your commands, its battery might be dead. This is a repair that the majority of people are able to do themselves.
To replace the battery you can purchase the new battery from a hardware store or consult the owner's manual for the model you have.
Change the battery
The key fob of your Nissan model comes with a built-in battery that eventually loses its charge. Luckily, changing the battery in the key fob is a straightforward process that takes only about a minute to complete. First, you'll have to purchase an CR2032 replacement battery. It's a tiny coin-cell battery that is used in most key fobs. You can buy it at most convenience stores. You'll also require gloves (latex or non-latex) and a small flathead screwdriver to open the fob. Before starting, be sure to refer to your owner's manual for specific instructions and steps.
Once you have the brand new battery, take off the old one by turning the fob upside down and looking at the back side. You will see a small latch that you must release by pulling down. This will open the mechanical key from its original position inside the fob.
Next, insert the new battery and make sure that it's properly aligned. Once the battery is placed close the fob, and then press the two sides together. Test your key fob after completing this step by pressing the unlock button. You can now use the various features of your Nissan to determine if everything is working well. It's recommended to reprogram the key fob after changing the battery to ensure that it's functioning correctly.
Replacing the Transmitter
Your key fob is the "key" to the majority of your vehicle's important functions. It can be a devastating blow when it is lost or damaged. A damaged or broken key fob will stop you from locking and starting your car.
It's a great idea to keep an extra key fob on hand in the event of an emergency. The procedure for replacing your Nissan keyfob is relatively simple. The process of replacing your Nissan key fob can be quite simple. You'll require an additional flathead screwdriver as well as a new battery to take out the old.

thekeylab.co.uk 'll also need an Panasonic CR2032 3V round battery (you can find them in multipacks that cost under $5 USD). The battery will be in the back half and you'll need to gently rotate the two halves to expose the battery. Utilize a flathead screwdriver and a small flathead to remove the clip on the top of the battery. Be sure to note its position. Replace the battery and put the key fob back together, and test it to confirm that it functions properly.
As with all electronic devices like yours, like any other electronic device, your Nissan Intelligent Key will eventually wear out due to regular use and need to be replaced. To prevent this is a good idea to shield your key fob from water, magnetic fields as well as physical impacts, so be sure not to drop it or place too much pressure on it.
Replace the Key
When your Nissan key fob is not working and you're unable to use it to unlock or start your car. That's a problem for people who have to go to work in Detroit or run errands in Dearborn or enjoy an evening on the town close to Troy.
The good news is, the battery inside your Nissan smart key isn't that difficult to replace. You can do it at home or at the dealership, and you can usually locate a pack for $5 or less at a hardware store.
Flip the fob back over and push the small catch at the back. This will open the mechanical emergency key. Although you won't be able to use the emergency key to start your car it will let you open the door.
Find a small slit on the top of the casing. You can use a screwdriver to pry out the two pieces of the key fob. Once you have access to the battery inside, take it out and make note of its position. When you're ready to reassemble your key fob, slide the new battery back into its place and snap the two sections of the case. Then, insert the mechanical key, and your Nissan smart key will be able to function as normal.
Other Problems
Many modern cars are fitted with key fobs that allow you to lock and start them without having an actual car key. To accomplish this the key fob makes use of a small transmitter to communicate with the car's computer system.
There are many possible reasons why your Nissan key fob will not function after replacing the battery. For instance, the new battery might not be properly seated within the key fob. Another possibility is that the key fob requires to be reset. It's an easy process that can be completed at home with the help of the right tools.
For example, you'll need the screwdriver, which should be preferably one with a flat-headed head to remove the key fob and remove the old battery. After that, using a screwdriver, break the back of the keyfob and then insert the new batteries. You'll also need to reprogramme your key fob for it to work with your vehicle.
You can easily program your Nissan key fob by yourself, since they're all user-programmable. It is typically done by inserting the keyfob in the ignition twice in five minutes. If this doesn't work, you can take your key fob into an auto locksmith to be programmed. Costs will vary based on the person who you contact and type of vehicle you own.