Nissan key fob not working after battery change

Before we begin with the steps, it’s essential to understand why your Nissan key fob may not work after a battery change. The primary cause of this issue is that the key fob loses its synchronization with the car’s security system. When this happens, the car cannot recognize the key fob, and it won’t work. But, don’t worry, reprogramming your key fob is a simple process that can be done at home.

Gather Your Materials

The first step is to gather all the materials you’ll need for the process. You’ll need your Nissan key fob, a new battery, and a paperclip or a small screwdriver.

Open Your Nissan Key Fob

The second step is to open your Nissan key fob. You can do this by using a paperclip or a small screwdriver to pry open the fob. Be careful not to damage the fob while doing this.

Remove the Old Battery

The third step is to remove the old battery from the fob. You can do this by gently prying the battery out of the fob using your finger or a small screwdriver.

Insert the New Battery

The fourth step is to insert the new battery into the fob. Make sure that the battery is inserted correctly, with the positive (+) and negative (-) sides facing the right direction.

Reprogram Your Nissan Key Fob

The final step is to reprogram your Nissan key fob. To do this, you need to follow these steps:

  1. Get into your Nissan vehicle with your key fob and make sure all doors are closed.
  2. Insert the key into the ignition and turn it to the “ON” position without starting the engine.
  3. Press and hold the “Lock” and “Unlock” buttons on your key fob for about 5 seconds.
  4. Release both buttons at the same time, and you should hear a chime. This indicates that the key fob has been reprogrammed.
  5. Turn off the ignition and remove the key.
  6. Test the key fob to ensure it’s working correctly.

Tips and Tricks:

• If you have multiple key fobs, you’ll need to reprogram each one separately.

• Make sure that the new battery you’re using is the right type and voltage for your key fob.

• If your key fob still isn’t working after reprogramming it, try replacing the battery again.

Frequently Asked Questions:

How often do I need to replace the battery in my Nissan key fob?

It’s recommended to replace the battery in your Nissan key fob every two years, or when the battery is low.

Can I reprogram my Nissan key fob myself?

Yes, you can reprogram your Nissan key fob yourself using the steps mentioned above.

Can I use a different type of battery in my Nissan key fob?

It’s recommended to use the same type of battery that originally came with your Nissan key fob to avoid any compatibility issues.


In conclusion, fixing a Nissan key fob that’s not working after a battery change is a simple process that can be done at home. By following the step-by-step instructions we’ve provided, you can easily reprogram your key fob and get it working again. It’s important to remember to use the right type of battery, follow the reprogramming steps precisely, and test the key fob to ensure it’s working correctly.

Leave a Comment