How to Replace the Key Fob Battery in a Nissan Xterra

1. Open the keyfob lid by prying it with a coin.
2. Take out the old battery.
3. Install a new battery with the "+" facing down.
4. Close the lid securely.
5. Press the lock button, then the unlock button two or three times to check the keyfob operation.

• Recommended battery: CR2025 or equivalent.
• Hold the battery by the edges; holding it across the contact points seriously depletes its storage capacity.
• Do not touch the internal circuit or electric terminals, and keep dust and oil off the keyfob.

Source: 2015 Nissan Xterra owner's manual, PDF page 339. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.