How to Replace the Battery in a Nissan Teana Key?
4 Answers
Method for replacing the battery in a Nissan Teana key: 1. Prepare the necessary tools, including a screwdriver and a new battery; 2. Press the button on the back of the key fob; 3. Remove the mechanical key; 4. Use the prepared tool to open the key fob; 5. Replace the battery and reassemble the key. The Teana is a sedan under the NISSAN brand, with exterior dimensions of 4901mm in length, 1850mm in width, and 1450mm in height, a wheelbase of 2825mm, and a body structure of a 4-door, 5-seater sedan. It is equipped with a 2.0L 156 horsepower L4 engine, delivering a maximum power of 115 kW and a maximum torque of 197 N·m.
Previously, my Nissan Teana key fob stopped working, so I found a DIY video and learned to replace the battery myself—it was super easy. There's a small notch on the back plastic cover of the key; you can gently pry it open with a fingernail or a screwdriver, but don't use too much force to avoid damage. Inside, there's a round coin battery, model CR2025, which costs just a few bucks at a battery store. When removing the old battery, be careful not to drop it. When installing the new one, make sure the positive side faces up, or it won't work. After reassembling, press the cover gently to secure it, then immediately test the key to see if it responds normally when locking/unlocking the doors. Doing it yourself saves dozens of dollars in shop fees and is quicker. I recommend buying a few spare batteries for next time. Key fob batteries drain faster with prolonged use, so checking and replacing them regularly can prevent the awkward situation of getting stranded halfway.
As a tech enthusiast, I've studied the Altima key structure, and changing the battery is quite interesting. First, identify the key type, such as smart or folding, with most using CR2025 batteries. Use a small Phillips screwdriver to gently unscrew the casing screws, or simply pry open the clips to remove the old battery. Be careful to keep the contact points clean and avoid contamination. Install the new battery with the positive side up to ensure circuit connectivity. Test by pressing the buttons several times to check for responsive feedback. Insufficient battery voltage can affect signal range, so it's recommended to replace it every two years as preventive maintenance. Buying a tool kit online makes the process more reliable.
I'm getting older and more cautious about changing batteries, so I'll first ask a kid to help me check the manual for the steps. There's a small notch on the edge of the key shell, gently pry it open without forcing it. Inside, there's a small round battery—take it out and buy a new CR2025 type. When installing, make sure the positive side faces the metal contact, then close the shell and test if it can unlock. If unsure, go to a repair shop—safety first. The battery is cheap, but doing it yourself saves money and teaches you something.
