2010 Nissan Sentra Key Fob Programming

If your Nissan uses a proximity (smart) key, it can't be programmed at home — an automotive locksmith or dealer must do it. If it uses a remote-head key (a key blade with the buttons built in), follow the steps below. Have every remote with you, since any you don't program will stop working.

1. 1Close and lock all doors using the power-lock switch on the driver's door.
2. 2Insert the key into the ignition (don't turn it) and pull it out — at least 6 times within 10 seconds, about one second apart, until the hazard lights flash. It can take 10–12 tries; pull the key fully out each time.
3. 3Insert the key and turn it to ACC.
4. 4Within 5 seconds, press LOCK once on the remote. The hazards flash. (Press it only once.)
5. 5For each additional remote: unlock then lock the doors with the driver's-door switch, and within 5 seconds press LOCK on the next remote. Repeat for every remote, including working ones.
6. 6Turn the key to OFF, remove it, unlock the doors with the switch, and open the driver's door. Test all remotes.

Your 2010 Nissan Sentra key fob uses a CR2025 3V lithium coin cell. A fresh one typically lasts 3–5 years.

How to replace the battery

1. 1 Find the seam or small slot on the edge of the remote.
2. 2 Twist a coin or small flathead in the slot to split the case open.
3. 3 Remove the old coin cell and note the + side.
4. 4 Fit the new battery with the + side matching, then close the case.
5. 5 Press a button to confirm the LED lights, then test at the car.