How to Replace the Battery in an Infiniti Car Key When It Dies?

[LeLuna]

Use a flathead screwdriver to pry open the smart key. Once opened, you will see the battery inside the key. Using a small flathead screwdriver can make it easier to remove the old battery. Insert the new battery, ensuring the "+" terminal faces upward. Then reattach the key cover and mechanical key.

[LeSpencer]

I've dealt with similar issues before, and replacing the Infiniti key fob battery is actually quite simple. First, use a small tool like a coin or screwdriver to gently pry open the casing by finding a gap on the back of the key—be careful not to use excessive force to avoid damaging the clips. Once opened, you'll see a coin cell battery, typically a CR2032 model. When removing the old battery, note the positive and negative orientation to avoid mistakes when inserting the new one. Install the new battery with the positive side facing up, then gently press the casing together until it clicks. Finally, test the remote functions to ensure they work properly. I personally recommend buying a new battery from a supermarket or electronics store—it's inexpensive and saves you a trip to the repair shop. Regularly checking the key fob battery helps prevent sudden issues, especially in winter when battery performance declines faster.