How to Replace the Battery in a Teana Key Fob?
2 Answers
Nissan Teana key fob features three buttons: lock, trunk release, and unlock. Follow these steps to replace the battery in the key fob: 1. Press the switch on the back of the key fob to remove the mechanical key. 2. Use a small flathead screwdriver to pry open the two thin seams on the key fob. 3. Remove the internal battery with the flathead screwdriver and insert the new battery, ensuring the positive side is facing down and the negative side is facing up. 4. Reassemble the key fob by reversing the steps, then test the lock, trunk release, and unlock functions to ensure they work properly.
I've replaced the battery in my Altima key fob a few times myself—it's not too hard but requires some patience. On the back of the key, look for a small groove or screw hole; usually a small Phillips-head screwdriver or a coin can pop it open. Apply even pressure when prying to avoid cracking the plastic casing. Inside, you'll typically find a CR2032 coin cell—just note the model and grab a replacement at any electronics store for a few bucks. When removing the old battery, remember the positive side faces up, and don't insert the new one backward. Snap the key shell shut afterward and test the lock/unlock buttons a few times. With practice, the whole process takes about five minutes, but first-timers should watch online tutorial videos before diving in. If you can't find the right tools, try safe household substitutes—just prioritize safety. Since you use the key daily, don't delay replacing a dying battery to avoid getting stranded at crucial moments.
