Revive Your Nissan Key Fob: How to Change the Battery

January 30, 2024

When you think of regular vehicle maintenance, you probably imagine changing your oil, rotating your tires, and changing your engine air filter. Changing the battery in your vehicle's key fob likely isn't on that list ‐ at least, until you try to use your key and realize the battery is dead.

Though key fob batteries can last quite a while, like any other battery, they will eventually run out of power and die. That may leave you wondering how to replace a Nissan key fob battery. Read on to learn signs that your key battery may be dying or is dead and how to change the battery in a Nissan key fob.

Signs You Need a Key Battery Replacement

Depending on your vehicle's make and model, the signs that your key fob battery is dying or dead can vary. Here are a few common signs that may indicate that your battery needs to be replaced.

The Key Doesn't Work or You Must Press Buttons Multiple Times

If you have to press the buttons on your key multiple times to lock or unlock your vehicle, this could occur due to your key fob emitting a weak radio signal. A common reason for this is that the battery is dying. Alternatively, your key fob battery could be completely dead if the buttons don't seem to work at all.

"Key Battery Low" Indicator Appears on the Display

In some Nissan vehicles, the dash will display an error message when your key battery is low. Typically, this message reads "Key Battery Low." If your vehicle shows this error message, your key fob battery likely needs replacing.

"Key ID Incorrect" Warning Appears on the Dash

Another possible Nissan dash display error message is "Key ID Incorrect." While Key ID Incorrect can appear due to several different problems with your vehicle's key fob, a possible cause is a discharged key batter.

How to Change the Battery in a Nissan Key Fob: Step-By-Step

There are several relatively simple service items that almost any driver can complete at home with minimal tools or mechanical knowledge ‐ that includes changing the battery in your key fob. Always check your owner's manual or service guide before performing any maintenance, as every make and model can vary.

For most Nissan models with Intelligent Keys, the following steps will guide you through changing your battery. You'll need a new battery (check your owner's manual for the specific battery), a clean cloth, and a small screwdriver.

1. Remove the Mechanical Key

Locate the switch on the back of your fob and use it to remove the mechanical key from the Intelligent Key. Set the mechanical emergency key aside in a safe spot.

2. Open the Key Fob Case

Insert a small screwdriver into the slit of the cover, and twist it to separate the upper from the lower. You can wrap the screwdriver in a clean cloth to help prevent scratches or damage to the case.

3. Locate and Remove the Battery

Find the round, coin-like battery in the case and carefully remove it. Be sure to dispose of the old battery following local regulations and laws.

Tip: Take care while removing and replacing the battery, and don't touch the internal circuit or electric terminals in the key.

4. Replace the Battery

For most models, the recommended Nissan key fob battery replacement is a CR2032, but check your owner's manual for specific recommendations. When placing the new battery, you should hold it by the edges, as touching the contact points (the flat sides) can deplete its charge capacity. Ensure the positive, or "+", side faces the bottom of the lower part of the case.

4. Close the Key Fob

Carefully and securely close the key fob case. Consult your owner's manual for a diagram of how to align and close the case.

5. Press Buttons to Check the Operation

Test your key fob by pressing the buttons to lock and unlock your vehicle.

Tip: If you aren't comfortable with replacing the battery or encounter any problems while attempting to do it yourself, don't hesitate to contact your local Nissan service center for assistance.

Changing the Key Fob Battery Didn't Fix the Problem!

Is your fob still not working even after swapping the battery? It could be time for a replacement. Order a replacement fob online from Nissan Parts & Accessories, and stop by your local dealer for programming and to ensure you don't have another issue that could be the cause of your key problems.